基于冲击启动理论的深孔区间爆破疏压技术

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摘要通过分析巷道冲击地压启动机制，采用数值模拟方法研究巷帮集中应力分布的爆破效应，提出基于冲击启动理论的深孔区间爆破疏压方法。研究表明：巷帮深孔爆破的区间应为冲击启动区，否则将起到负面作用；加大巷帮煤壁支护强度以疏、降集中应力是有限的；深孔区间爆破疏压方法，一方面疏、降冲击启动区应力或能量集中程度，阻止冲击启动环节发生，另一方面迫使率先冲击启动的区域向煤壁深部迁移，并增加疏压区消耗冲击地压启动后的总能量，降低能量释放速度。研究结果在现场取得较好的应用效果。

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关键词 ：采矿工程, 区间爆破, 疏压方法, 集中应力, 冲击启动理论, 冲击地压, 巷道

Abstract：By analyzing the mechanism of rock burst start-up，the blasting effect of the concentrated stress distribution in the roadway is studied by numerical simulation methods；and the dredging method of pressure with deep-hole interval blasting based on theory of rock burst start-up is proposed. The research results show that：(1) The interval of deep-hole blasting in roadway should be the area of rock burst start-up，otherwise it will play a negative role. (2) It is limited to dredge and debase concentrated stress by increasing intension of roadway support. (3) On one hand，the dredging method of pressure with deep-hole interval blasting can dredge and debase the degree of concentrated stress or energy of the area of rock burst start-up，thus the rock burst start-up step can be prevented. On other hand，it let the area of rock burst start-up firstly move to the deep coal wall；and the total energy which is consumed by rock burst start-up in dredging pressure area increases，but the energy release speed reduces. The good effect of application the research results to field engineering is got.

Key words： mining engineering interval blasting dredging method of pressure concentrated stress theory of rock burst start-up rock burst roadway

引用本文:

潘俊锋1，2，宁宇3，秦子晗1，2，王书文1，2，夏永学1，2. 基于冲击启动理论的深孔区间爆破疏压技术[J]. 岩石力学与工程学报, 2012, 31(7): 1414-1421.
PAN Junfeng1，2，NING Yu3，QIN Zihan1，2，WANG Shuwen1，2，XIA Yongxue1，2. DREDGING TECHNOLOGY OF PRESSURE WITH DEEP-HOLE INTERVAL BLASTING BASED ON THEORY OF ROCK BURST START-UP. , 2012, 31(7): 1414-1421.

链接本文:

http://www.rockmech.org/CN/Y2012/V31/I7/1414

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