Observation study of fissure rock damage range under blasting load

XIA Hong-bing; XU Ying; ZONG Qi; FU Ju-gen

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Observation study of fissure rock damage range under blasting load

更新时间：2026-06-25

- Observation study of fissure rock damage range under blasting load
- Vol. 28, Issue 4, (2007)
- 作者机构：
  
  1. 中国科学技术大学，合豝,230026
  2. 安徽理工大学土木工程系,淮南,232001
- 作者简介：
- 基金信息：
- DOI：
  CLC： TU459+.3
- Online First：05 September 2013，
  
  Published：2007
- 稿件说明：
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XIA Hong-bing, XU Ying, ZONG Qi, et al. Observation study of fissure rock damage range under blasting load[J]. 2007, 28(4).
DOI：

XIA Hong-bing, XU Ying, ZONG Qi, et al. Observation study of fissure rock damage range under blasting load[J]. 2007, 28(4). DOI：

摘要

通过电法CT成像技术，探测微量炸药爆炸前后裂隙岩体深孔之间电阻率的变化，查明探测切面内的岩体损伤裂隙发育形态和空间展布。通过实验可知：微量炸药爆炸后在裂隙岩体的炮孔深部可以形成一定范围、一定数量和一定宽度的裂隙，其中裂隙形成的区域主要集中在炮孔口深的2/3处，当炮孔深度3 m，装药量为330 g时，在眼深1.5～2.5 m处裂隙较为发育，炮孔间距为1.2 m～1.5 m时，可在岩体内部形成贯通裂隙。

Abstract

Detecing the changes of resistivity in deep holes of fissure rock before and after micro explosive blasting to the limestone in Luyuan Mountain Villa with electrical CT image

a certain range，number and width fissures could develop in deep blasting holes after micro explosive blasting，and areas which were caused by fissures mainly located at about 2/3 depth of the bottom of the blasting holes.when the depth of blasting hole is 3 m

and the explosive weighted 330g

fissures developed easily at the depth of 1.5-2.5 m of the blasting hole.when the distance between the blasting holes is 1.2-1.5 m

penetration fissures could form in the internal rock

providing scientific basis for blasting engineering design and construction.

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