断层对深孔聚能爆破煤层增透的影响  

Effect of fault on deep-hole cumulative blasting to improve coal bed permeability

作　　者：郭德勇[1] 张慧杰[1] 吕鹏飞[1] 张革伟 

机构地区：[1]中国矿业大学(北京)资源与安全工程学院,北京100083 [2]平顶山天安煤业股份有限公司,平顶山467000

出　　处：《北京科技大学学报》2014年第10期1281-1286,共6页Journal of University of Science and Technology Beijing

基　　金：国家自然科学基金资助项目(41072118);教育部科学技术研究重大项目(311022)

摘　　要：针对断层构造对煤层深孔聚能爆破增透效果和安全性的影响,本文在理论分析、数值模拟和现场试验研究基础上,分析了断层对爆破增透煤体裂隙生成和发育的影响,从瓦斯赋存和爆破能量传播探讨了断层对爆破安全性的影响.数值模拟结果验证了断层对爆破裂隙扩展和应力波传播的影响.现场试验表明,断层影响区爆破孔增透效果是未受断层影响区域的2.60倍,断层构造带容易造成冲孔现象,对爆破安全性有重要影响.This article aims at the influence of fault structure on permeability-improved effect and coal-bed deep-hole cumulative blasting safety. The dependence of crack generation and growth upon fault was analyzed on the base of theoretical analysis, numerical simulation and field test. The effect of fault on blasting safety was discussed from two aspects of gas occurrence and blasting energy propagation. Numerical simulation results demonstrate that fault affects blasting crack growth and stress wave propagation. Field test shows that permeability-improved effect in the fault-affected zone is 1. 6 times better than that in no fault-affected zone, and that the fault zone, which easily causes punching phenomena, has important influence on blasting safety.

关 键 词：断层 爆破 瓦斯 煤层 渗透性 安全 

分 类 号：TD712[矿业工程—矿井通风与安全]