Dynamic compaction ppt

Dynamic compaction ppt. - ProfResearchReports To Browse Full Report with TOC: – PowerPoint PPT presentation 1. Soil compaction. Numerical study of the coupled hydro-mechanical effects in dynamic compaction of saturated granular soils Basic principle of dynamic compaction. It discusses the commonly used ground improvement technique of soil compaction through Oct 3, 2014 · DEEP DYNAMIC COMPACTION Engr Sarfraz Ali sarfrazengr@yahoo. To compact a soil, that is, to place it in a dense state. Pore pressure transducer (PPT) was used to measure the pore pressure during dynamic compaction. Nov 3, 2015 • Download as PPTX, PDF •. 0 likes • 144 views. Dynamic cone penetration test (DCPT) value conducted in the field can be used to estimate the CBR value provided a suitable relationship exists between CBR and DCPT value The individual charges are 1-12 kg or 10-30 g/m 3 of the soil to be compacted. ) is a cost-. 4. Increases unit weight. Groundworks delivers drill holes in a uniform blasting pattern to improve rock fragmentation. GWC = W f + W p + W e +W fr. Constructing Careers. Compact only when jobs are waiting. Simplistically, compaction may be defined as the process in which soil particles are forced closer together with the resultant reduction in air voids. The reaction of the soil during the treatment varies with soil type and energy input. Feb 15, 2018 · Application of dynamic compaction analysis and percolation theory proved to be useful tools for excipient functionality and performance evaluation. Dynamic compaction requires the use of pounders weighing between 12 to 40 tons released in free fall from a height of 10 to 40 meters. Net work of compaction (NWC) is calculated by subtracting the work of. Mar 12, 2018 · Dynamic compaction (dynamic. ADVERTISEMENTS: Compaction: 1. Nov 18, 2014 · SOIL COMPACTION. Two-dimensional model of material system was established by the coupled discrete element-finite difference method to reveal the dynamic responses at both macro- and microscopic levels. 5- Sheep foot Roller 6- Dynamic Compaction. Sethi*1, N. FHWA West Virginia Division Dynamic compaction. But their negative impact on soil includes changing soil structure resulting in deteriorating soil productivity and environmental quality Aug 12, 2017 · 32. Dynamic Compaction is the introduction of multiple passes of high energy impacts at ground level by repeatedly dropping steel tampers of 6 to 30 tons from drop heights of 30 to 100 feet. It is based on applying high intensity impacts of free-falling heavy steel or concrete hammer on the surface of the soil Jun 28, 2018 · Jun 28, 2018 •. Heavily compacted soils contain few large pores, less total pore volume and, consequently, a greater density. Most often the procedure is done in two In recent years dynamic compaction (DC) has become a popular method for deep improvement of loose cohesionless soils and man-made fills of disposed waste and rubble. , P. address ; best-fit memory allocation ; bounds register ; compaction ; deallocation ; dynamic partitions May 9, 2024 · Soil compaction is one of the most critical components in the construction or roads, air-fields, embankments and foundations. NWC = GWC – WER. Sep 26, 2021 · Soil improvement techniques. May 19, 2011 · The subbase/base thickness of pavement is governed by the CBR value of the subgrade soil along with some other parameters such as traffic intensity, climatic conditions, etc. ppt), PDF File (. The layout of the PPTs is shown in Fig. On sites where dynamic compaction is used, alternative methods of post-improvement evaluation have become more common, given No FHWA design guidance for RIC currently exists. This high level impact creates a shock wave that increases and improves the density Compaction is completed within minutes-and hence is a short-term process. 1 of 105. Compaction is caused by short-term dynamic load, which are removed after compaction. elastic relaxation (WER) from the gross work of compaction (GWC). It was used to improve a construction site with loose sandy soils. To maintain this website, we need your help. Scarcity of suitable construction sites Problem soils Collapsible soils Liquefiable soils Waste materials Wide application Economy. Compact after certain amount of time. For NHDOT complaints are most common with vibratory compaction and impact pile driving. It is a method that is used to increase the density of soil deposits. 12 and 6. W f = work against friction W e = work of elastic deformation. Dynamic compaction (DC) strengthens weak soils by controlled high-energy tamping (dropping a static weight from a defined height). This happens because large pores more effectively move water downward through Dynamic compaction (DC) involves the use of high-energy heavy tamping passes to densify loose coarse-grained soils. 32 likes • 18,468 views. The basic principle of this technique is the transmission of high energy impacts to loose granular soil which initially have low bearing capacity and high DYNAMIC COMPACTION PPYT - Free download as Powerpoint Presentation (. Jul 24, 2021 · This paper numerically studies the densification mechanism of granular soil under dynamic compaction (DC) of proceeding impacts. Dynamic Compaction Solutions. E. Bulk density is the mass of oven-dry soil in a standard volume of soil, often given as grams per cubic centimeter (g/cm3). 2 ABRIEF OVERVIEW OF DYNAMIC COMPACTION METHODS Dynamic compaction is a ground improvement technique for compacting fills as well as soft or loose natural soils. Compaction, in general, is the densification of soil by removal of air, which requires mechanical energy. Mar 1, 1995 · Guidelines are presented for: completing a preliminary evaluation to determine if dynamic compaction is appropriate for the site and subsurface conditions; detailed design for site improvement; preparation of a specification; and construction monitoring. Increases shear strength. Variations from site to site and subsurface conditions. Sheepsfoot rollers are used for compaction of soils in dams, embankments, subgrade layers in pavements and rail road construction projects. Feb 1, 2020 · The core of dynamic compaction is that the tremendous impact of tamping generates strong shock and stress waves in the fill material, then the compression and compaction make the fill more stable. Engineering. It involves dropping a heavy weight on the ground repeatedly to increase the soil density. Methods for Soil Improvement. The engineering properties of a wide range of soils can be substantially improved using this method. May 30, 2018 · The tamper is dropped in a systematically controlled pattern on a coordinate grid layout. D. Proposed Design Guideline of Dynamic Compaction for Practicing Engineers. Slideshow view. RIC was found to be more cost-effective than Mar 23, 2023 · Dynamic compaction is a ground improvement technique that has been used more frequently to improve in-place landfill materials to a point where vertical construction can proceed without excessive long-term settlements. The area that needs to be compacted. The drop weight, typically steel, is lifted by a crane and repeatedly dropped onto the ground surface. Terashi and Juran (2000) A detailed plan for deep dynamic compaction includes: The tamper weight and drop height. , 75). Download PDF - Dynamic Compaction Ppt [34wm118rmyl7]. This high-level impact creates a shock wave that increases and improves the density of the soil and reduces the void ratio, exposing loose zones and soft spots Dynamic Compaction is a well established technique to treat large sites or sites with major obstructions such as old power stations, infilled docks or deep o Oct 10, 2021 · Dynamic Compaction Process. 1 Dynamic Compaction. 5 to 3 m of the in situ soil or construction of overburden at toe on both sides of the embankment heights ranging from 0. The spacing between each drop location. Aug 13, 2013 · DEEP DYNAMIC COMPACTION Engr Sarfraz Ali sarfrazengr@yahoo. For large projects, engineers can use test blasting to Nur-Ranji Jajurie. 11 likes • 8,254 views. 6. It is inexpensive, fast and practical. Download now. The first phase is the high-energy phase to improve the deeper Metoda Dynamic Compaction (DC) Secara garis besar, pengertian DC adalah suatu metoda peningkatan kondisi tanah yang dapat diterapkan pada tanah yang kering, basah/lembab dan jenuh (saturated). The dense state is achieved through the reduction of the air voids in the soil, with little or no reduction in the water content. Dynamic compaction involves the controlled impact of a crane hoisted weight, of around 10-30 tonnes, falling in a pre-determined grid pattern to improve loose, granular soils and fills. Vibratory types rollers are used for compaction of Apr 15, 2016 · Soil Compaction - Civil Engineering. Oct 28, 2016 · 8. Tjie-Liong Gouw. Many DC Dynamic Compaction Ppt The corporate upholds the philosophy of "Be No. Soil Compaction in the Field : 1- Rammers 2- Vibratory Plates 3- Smooth Rollers 4- Rubber-Tire. To better treat a foundation with a low water Namun setelah perbaikan tanah dengan dynamic compaction dapat disimpulkan seluruh titik tinjauan aman dari potensi likuifaksi karena seluruh titik memiliki Safety Factor lebih dari 1 dan memiliki nilai (N1)60 > 30 diklasifikasikan sebagai tanah tidak terlikuifaksi. V. A compacted soil has a reduced rate of both water infiltration and drainage. vivekprakashmani. The first layers of PPTs were 1 m under the water table. 257 24 2MB Read more. Dynamic compaction is a procedure used to densify weak soil deposits in­place by dropping a large weight (typically 8 to 16 tons) from heights of up to 75+ feet with standard equipment. About this Document. Aug 12, 2021 • Download as PPTX, PDF •. 5 days ago · Compaction in Operating System. Highest vibrations were recorded at start up and shut down of pile driving equipment. Optimum bulk densities for soils depend on the soil texture (Table 1). Rapid impact compaction (RIC) is a ground improvement method that uses a heavy weight dropped from a rig to compact loose soils up to 9 meters deep. Rapid impact compaction densifies shallow, granular soils, using a hydraulic hammer, which repeatedly strikes an impact plate on the ground surface. What is compaction? Soil compaction occurs when soil particles are pressed together, reducing pore space between them (Figure 1). 30 Hz. The basic principle of the technique is a transmission of high energy waves through a compressible soil layer in order to improve its geotechnical properties at depth. Health & Medicine. g. com. Jan 22, 2016 · Compaction is the densification of soil through mechanical means such as rolling, ramming, or vibration to reduce porosity and increase dry density. This process must not be confused with consolidation, in Jan 1, 2024 · The existing quality monitoring method of dynamic compaction construction is costly and inefficient, and the measurement results for the falling distance of the hammer and the number of tamping times may even become completely ineffective in abnormal situations during the construction process, such as empty hook rise and early release hammer. The distance between boreholes ranges from 5-15 m. The advantage of Menard Asia’s Dynamic compaction (DC) : – Well adapted to the treatment of non-organic heterogeneous fill or made ground containing large blocks Nov 3, 2015 · Soil Compaction. The impacts are spaced at a distance depending on the depth of the compressible layer, the depth to the groundwater, and grain size distribution. This technique is particularly well-adapted to nonorganic heterogeneous fill Nov 7, 2017 · Dynamic compaction is a ground improvement technique in which a drop weight is used to densify the soils and fill materials. The document discusses soil compaction, including what it is, its effects on soil structure, reasons for compaction, and factors that affect it. The degree of compaction is measured in terms of its dry unit weight. 5 to 6 m after closely analyzing the liquefaction potential. and dropped from a considerable Dynamic compaction is a ground improvement technique that densifies soils and fill materials using a drop weight. ”. Dynamic compaction is a cost-effective technique used for deep ground densification. Dynamic compaction involves the controlled impact of a crane hoisted weight, of around 10-12 tonnes, falling in a pre-determined grid pattern to improve loose, granular and mixed soils and fills. The use of heavy agricultural machinery has improved the efficiency of farming operations and increased global food production since the 1950s. Dynamic Compaction (Heavy Tamping) Dynamic Compaction (DC) is a a Ground Modification technique e whereby loose soils can be effectively and economically densified to improve its mechanical characteristics and allow construction of structures directly on compacted soil, without need of deep foundations or soil replacement. One of the main problems facing design engineers and contractors is the assessment of the number of tamper drops, grid spacing, and layout of passes required to attain satisfactory improvement depth in the soil strata. The height from which the weight is dropped can vary from 1 A SHS dynamic compaction system is fabricated on the basis of our design ; Several high-temperature materials such as TiB2-Al2O3, TiB2-ZrB2-Al2O3 and Ni-TiB2-Al2O3 in-situ composites are prepared ; Densification gt 98 of the theoretical density and hardness gt 5000 HVN is achieved in TiB2-Al2O3 composites; SHS dynamic compaction system designed NPTEL provides E-learning through online Web and Video courses various streams. It does that by moving all the processes towards one end of the memory and all the available free space towards the other end of the memory so Dynamic compaction (DC) is a cost-effective densification method using shock waves by impact loads for loose granular soils, uncontrolled fills or waste. consolidation, heavy tamping etc. Increases stability of slopes of embankments. This is a non-profit website to share the knowledge. 4 likes · 1 talking about this. Compaction is the densification of soils by removal of air through the application of mechanical energy. It also enables the engineer to identify weak zones (red dots) or debris zones throughout the pad so that any remedial actions that may be required can be minimized resulting in cost savings. The purpose of this paper is to provide a refined analysis and insight understanding of the current practice, limitations, challenges, and future development trends of compaction methods from the perspective of the development Dec 15, 2012 · Pemadatan Dalam • Precompression • Peledakan • Dynamic Compaction • Vibroflotation • Compaction Grouting • Vibroflotation • Ada 2 metode, Wet Method dan dry method • Prinsip kerja Wet method: • Alat diturunkan kedalam tanah sambil disemprot dengan air bertekanan tinggi • Semprotan air mengakibatkan kondisi “cair” pada Dynamic Compaction Solutions. S. Guru Nank Dev Engineering College, Ludhiana, Punjab, India-141006. Dynamic replacement is a variation An overview of dynamic compaction in powder metallurgy G. Prior to construction, a full-scale plate load test was performed at a dynamically compacted area to verify soil behavior under maximum column loads. Soil Compaction - Civil Engineering - Download as a PDF or view online for free. GeorgeThampy. This technology was extensively tested and optimised hence its safe Oct 20, 2021 · Dynamic compaction has been applied successfully for the construction of industrial warehouses, port and airport platforms, road and railways embankments, heavy storage, tank, etc. Contractor. A specialty contractor, rather than a design engineer, typically performs the majority of RIC design. Compaction is greatly affected by soil type, moisture content, and compaction effort Apr 21, 2016 · Compression means reduction of bulk volume of material as a result of the removal of gaseous phase (air) by applied pressure WHAT IS CONSOLIDATION? Consolidation is an increase in mechanical strength of material resulting from particle - particle interactions. By Kamal Tawfiq, Ph. Typically drop weights range from 6-20 ton dropped from heights up to 20m. R. effective method of soil compaction in. </p><p>In current practice, the RIC design method that is utilized is referred to as the “direct measurement of improvement depth following construction. Two case histories of actual projects are presented to demonstrate the use of the guidelines. . txt) or view presentation slides online. For soils not suitable for compaction, dynamic replacement can be used. Feb 23, 1998 · Timing of compaction (when, how often) is crucial. Mar 20, 2012 • Download as PPT, PDF •. Metoda Dynamic Compaction (DC)Secara garis besar, pengertian DC adalah suatu metoda peningkatan kondisi tanah yang dapat diterapkan pada tanah yang kering, basah/lembab dan jenuh (saturated). Compact when certain percentage of memory is busy (e. This document is useful for Civil Engineering (CE) 4. The ground displacement of a crater induced by a hammer is often used for the determination of densification, but less attention has been paid to internal displacement in the ground. The process involves dropping a heavyweight repeatedly on the ground at regular space intervals. Compaction is effective in well-graded soils containing gravel and sand, and to a less extent in silts and clays. 2. Dynamic Compaction Dynamic compaction Dynamic Compaction • The process primarily involves dropping a heavy weight re . The most direct effect of soil compaction is an increase in the bulk density of soil. ) is a cost-effective method of soil compaction whereby a heavy weight is repeatedly lifted and dropped from a height, impacting the ground surface with a readily calculated impact energy (Figures 6. The method involves compaction depths and materials to be compacted. Dynamic Compaction can be applied for the consolidation treatment of soft clays (called Dynamic Consolidation). Compaction of Soil Definition: Dr. The Dynamic Compaction technology, also known as dynamic consolidation, is a technology invented and developed by Menard. ABSTRACT: During an Dynamic Compaction is the introduction of multiple passes of high energy impacts at ground level by repeatedly dropping steel tampers of 6 to 30 tons from drop heights of 30 to 100 feet. It is one of the most common ground improvement technique using vibration. 1 in excellent, be rooted on credit rating and trustworthiness for growth", will keep on to serve outdated and new clients from home and abroad whole-heatedly for Dynamic Compaction Ppt, Tunnel Making Machine , Tractor Boring Machine , Bored Pile Construction , Hole Boring Nov 3, 2016 · Introduction. Myers2 and Randall M. pptx), PDF File (. Ground Improvement. Jan 1, 2024 · necessary to rearrange the particles, deform and finally to fragment them. RIC was completed in 3 weeks and reduced expected settlements by 45% according to tests, allowing shallow foundations to be used. Costs are reportedly about 2/3 that of stone columns, with up to Definition. PPT ABOUT DYNAMIC COMPACTION Aug 19, 2013 · Considering the buried rock/rubble, proximity of existing structures and underground oil lines and the sustainability of the solution, Deep Dynamic Compaction (DDC) was selected. The notes and questions for PPT: Soil Compaction have been prepared according to the Civil Engineering (CE) exam syllabus. The DDC process used a 118-Mg (130-ton) crawler crane with multiple drops and passes of a 27. 1 of 30. Improvement depth of up to 12m can be achieved using dynamic compaction to provide allowable bearing pressures of up to 300kPa and settlements of 10-20mm for conventional structures. Trimble Groundworks is a 3D machine control system that improves efficiency and reduces downtime with stakeless navigation, monitoring productivity and quality, and managing design data from office to field. Fill for highways and buildings is regularly strengthened by dynamic compaction and remarkable results have been achieved [7,8]. This design method is not proprietary. 13). Loose granular sand deposits formed during the land reclamation process are vulnerable to liquefaction upon imparting seismic forces. The average amount of energy that needs to be applied over the site. Aug 31, 2023 · This paper analyzed the energy transfer and consumption of the dynamic compaction method for high-groundwater-level foundations from the perspective of vibration waves. Fall 2008. Most non-blasting vibrations fall in low frequency range 5-. Five to 15 blows per grid point are applied. To establish an overall understanding of the displacements caused by DC, a laboratory experiment Mar 12, 2020 · Hence, the soil replacement of 0. Rahul Sikarwar. Presentations & Public Speaking. High energy waves created by the repeated impact of heavy weights compact areas of loose granular soils, uncontrolled fills, or waste materials to increase density and collapse voids. Ground Reinforcement. It is typically done on a grid pattern varying from 10 to 15+ feet on centers with 4 to 6 drops per location per pass. AI-enhanced description. 1 of 27. It discusses the concepts, procedures, advantages, limitations, and examples of each technique. It is a method to improve the density of soil deposits. Increases bearing capacity. The weight used depends on how dense we want the soil to be and usually ranges from 8 to 36 tonnes. Metoda ini bisa juga diterapkan pada tanah jenuh dengan kandungan butiran halus mencapai hingga 30%. soil compaction increases the shear strength of the soil. Sheepsfoot rollers are of static and vibratory types. 1 Compaction and Objectives Many types of earth construction, such as dams, retaining walls, highways, and airport, require man-placed soil, or fill. Soil Compaction is the process in which stress is applied to a soil which causes densification as the voids are filled with solids. Read more. 30 likes • 9,047 views. Jun 24, 2019 · G. Vibro-compaction also known as vibro-flotation is a technique in which the density of granular soils are increased by the insertion of a heavy vibrating poker to desired depth. which a heavy weight is repeatedly lifted. 3. Apr 16, 2020 · Deep compaction techniques. Apr 2, 2020 · Dynamic compaction is a process that is adopted to increase the density of the soil when some subsurface restraints make other systems unsuitable. And soil compaction is much effective in earth dams. Zona kerentanan mengalami likuifaksi di kedalaman 2 – 6 meter. German3 This paper is a critical review of dynamic compaction as a means to densify metal powders. Different types of compaction techniques for ground improvement. The drop weight is typically made of steel and is lifted by a crane and repeatedly dropped onto the ground surface. The number of drops at each location. The load test was monitored using precise survey Jun 29, 2021 · Dynamic compaction is a cost-effective foundation treatment technology, that is widely used in various types and conditions of foundations. Features and Benefits. Firstly, normalized crater deformation simulated was compared with existing in Dynamic compaction (DDC, heavy tamping, dynamic consolidation, etc. Sheepsfoot rollers are used for compacting fine grained soils such as heavy clays and silty clays. Aug 12, 2021 · Compaction of soil. Aug 1, 1992 · In spite of the various simplifying assumptions in the model and the predictive method, computed results, such as pounder penetration and degree and depth of improvement, show an encouraging measure of agreement with available field measurements from two dynamic compaction projects. Senior Geotechnial Consultant, Jakarta, Indonesia. Download to read offline. Dynamic compaction is a method that is used to increase the density of the soil when certain subsurface contains make other methods inappropriate. Introduction. ppt / . Anjana R Menon. The Report Global and Chinese Crawler Dynamic Compaction Machine Industry, 2010-2020 Market Research Report provides information on pricing, market analysis, shares, forecast, and company profiles for key industry, market opportunity analysis and participants. The treatment is achieved by a combination of the weight, drop height, grid pattern, number of passes, position of the ground Feb 15, 2023 · Dynamic compaction (DC) is a ground treatment method that achieves soil densification effects using impact forces. Ground Improvement - Compaction; Vibratory methods; Biotechnical stabilisation; Thermal Methods. 4. The results showed that compared with dry sand, dynamic compaction of high-groundwater-level foundations will obviously consume reinforcement energy. 5. 69/5 Rating. Apr 14, 2016 • Download as PPT, PDF •. Deep dynamic compaction is a ground improvement technique that involves repeatedly dropping a heavy tamper from heights of 10-40 meters to densify loose or compressible soils. However, due to the limitation of natural conditions (water content between 3% and 8%) in north-western China, it is difficult to meet the requirements of the optimal water content during dynamic compaction. It also describes various laboratory tests and results for soil Jan 7, 2022 · Experimental design. Laboratory compaction tests determine the optimum water content and maximum dry density for a soil through controlled compaction and varying water content. Approaches to timing of compaction ; 1. This document provides information on field compaction techniques and procedures. Standard Proctor and Modified Proctor Rapid impact compaction densifies shallow, granular soils, using a hydraulic hammer, which repeatedly strikes an impact plate on the ground surface. Ground improvement techniques compaction vibration - Download as a PDF or view online for free. Compaction is a technique to collect all the free memory present in the form of fragments into one large chunk of free memory, which can be used to run other processes. Although examined multifunctional excipients exhibited more dominant impact on the investigated tablet CQAs, the influence of selected drug should not be neglected, especially with respect to tablet CEC6-1 - Free download as Powerpoint Presentation (. Abdulmannan Orabi IUST 8. The process involves dropping a heavyweight repeatedly on the ground surface at periodically spaced intervals. A deep dynamic compaction soil improvement plan was designed to allow for the use of a conventional shallow foundation and slab-on-grade system. The document provides an overview of various ground improvement techniques including dynamic compaction, vibro compaction, dynamic replacement, vibro replacement, controlled modulus columns, and stone columns. The arrangement of the impact points and the other parameters of the treatment (energies, phasing, rest periods) depend on the characteristics of the soil to be treated and on the results obtained from the Nov 24, 2021 · Purpose Sustainable crop production could contribute to feed and fuel for the ever-increasing global population. Mar 8, 2005 · Soil Density. Vibrations transmitted below the surface improve soils at depth. pdf), Text File (. Dynamic compaction has proved to be an effective and economical Dynamic compaction is a technique used to make soil denser when other methods can not be used. Dynamic Compaction ppt. This technique is also known as dynamic consolidation or heavy tamping or TLM (Triple-Layer Model), which was found by the technician Louis Menard in the 1970s. Dynamic compaction is applicable to any type of granular soil. Latif Hyder Wadho. 31 Key Terms. 2-Mg (30-ton) tamper weight falling 24. Aug 9, 2023 · Ensuring high-quality fill compaction is crucial for the stability and longevity of infrastructures and affects the sustainability of urban infrastructure networks. soil compaction occurs when soil particles are pressed together so that reduction in pore space between them. This vibrating poker is also known as depth vibrator or a vibroflot or simply flot. The durability and stability of a structure are related to the achievement of proper soil compaction. This plays a vital part in construction for soils are mainly used as supports for a lot of infrastructures. 4 m (80 feet). Dynamic Compaction is a ground improvement technique that densifies granular materials by using a drop weight and it is applicable to both saturated and unsaturated soils. Nov 20, 2020 · 1. E-mail: gtloffice@gmail. These loose granular sand fills could encounter bearing failures or compress beyond tolerable limits under static and dynamic loads. Moreover, if the above measures do not make the soil non-liquefiable, other improvement technique such as dynamic compaction is used. Mar 20, 2012 · Compaction. Definition : Slideshow 6763935 by uriel-jimenez. Document Description: PPT: Soil Compaction for Civil Engineering (CE) 2024 is part of Soil Mechanics preparation. 4PPTs were embedded under the tamping point to measure the pore pressure profile along the depth. 13 likes • 4,492 views. Place explosive materials in drilled or jetted boreholes at a depth of about 50-75% of the total soil depth intended to be compacted, below the water table. 1 of 40. rh gz qy yi wt zz xv gq dl uc