CAJ | 학술논문

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.
침대단층구조대매층심공취능폭파증투효과화안전성적영향，본문재이론분석、수치모의화현장시험연구기출상，분석료단층대폭파증투매체렬극생성화발육적영향，종와사부존화폭파능량전파탐토료단층대폭파안전성적영향.수치모의결과험증료단층대폭파렬극확전화응력파전파적영향.현장시험표명，단층영향구폭파공증투효과시미수단층영향구역적2.60배，단층구조대용역조성충공현상，대폭파안전성유중요영향.
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.