Variation pattern of soil physico-mechanical performance by explosive enlargement

WANG Hai-liang; YE Chao-liang

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Variation pattern of soil physico-mechanical performance by explosive enlargement

更新时间：2026-06-25

- Variation pattern of soil physico-mechanical performance by explosive enlargement
- Vol. 32, Issue 9, (2011)
- 作者机构：
  
  1. 山东科技大学矿山灾害预防控制省部共建教育部重点实验室,山东,青岛,266510
  2. 石家庄铁道大学,石家庄,050043
- 作者简介：
- 基金信息：
- DOI：
  CLC： TU43
- Online First：13 September 2011，
  
  Published：2011
- 稿件说明：
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WANG Hai-liang, YE Chao-liang. Variation pattern of soil physico-mechanical performance by explosive enlargement[J]. 2011, 32(9).
DOI：

WANG Hai-liang, YE Chao-liang. Variation pattern of soil physico-mechanical performance by explosive enlargement[J]. 2011, 32(9). DOI：

摘要

在6块不同的土质场地完成了21次爆炸成腔试验，试验用炸药埋深为1.20～12.5 cm，起爆药量为0.05～51 kg。对其中的5个腔体进行了土工试验。对爆后土体的天然密度、孔隙比、饱和度、压缩系数、压缩模量、内摩擦角、黏聚力的分布规律进行了实测。试验结果表明，爆炸作用对土体的影响半径是爆炸成腔半径的4～6倍。土体的天然密度、干密度、饱和度、压缩模量和黏聚力等指标随土体距爆炸中心距离的增大而降低。土体的孔隙比、压缩系数和渗透系数等指标随土体距爆炸中心距离的增大而提高。未在腔壁附近发现密度低于原状土的低密度区。爆炸冲击作用对土体内摩擦角的影响规律不明显。

Abstract

Twenty-one field explosive enlargement tests were carried out on six different soil test sites. The embedded charge were 0.05-51 kg and their embedded depths were 1.20-12.5 cm. Five explosively formed cavities were employed for the soil mechanical test on the variation patterns of natural density

pore-solids ratio

saturation degree

compressibility

compression modulus

internal friction angle and cohesive strength. The test results show that the radii of soil mass affected by explosion are four to six times larger than radii of explosively formed cavities. Soil performance indices such as natural density

dry density

saturation degree

compression modulus

cohesive strength are decreased with the increasing of distance to the center of charge. The indices such as pore-solids ratio

compressibility

coefficient of permeability are increased with the increasing of distance to the center of charge. No low-density region where density is lower than undisturbed soil is found around the caves. The variation pattern of internal friction angle of soil by explosive shock is not clear

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