煤矿安全2012，Vol.43Issue(11)：198-200,3.
爆破对软岩巷道松动范围影响的测试与分析
Testing and Analysis of Influence of Blasting on Soft Rock Roadway Loose Zone
摘要
Abstract
In view of that charge quantity of roadway blasting construction is increasing,expansion of crack in rock mass is promoted and make the loose zone circle of surrounding rock increase.According to the field construction,loose circle radius of surrounding rock before and after blasting are tested,and the influence of blasting construction on extension of loose zone is analyzed.The analysis results show that radius of loose circle after roadway stability is about 1.8 m,and 10% of which is caused by blasting effect,influence range of blasting dynamic load is 25 to 30 m.By supporting parameters adjustment,increasing length of anchor,safety and reliability of the supporting is improved.Finally,from the aspects of blasting parameters and charge structure,the paper proposes measures for reducing dynamic load strength of roadway blasting.关键词
软岩巷道/爆破施工/松动圈/测试Key words
soft rock roadway/blasting construction/loose zone/testing分类
矿业与冶金引用本文复制引用
汪海波,徐颖..爆破对软岩巷道松动范围影响的测试与分析[J].煤矿安全,2012,43(11):198-200,3.基金项目
国家自然科学基金重点资助项目 （）
国家自然科学基金资助项目 （）
