水压爆破防突机理分析及工程应用  

Prevent Outburst Mechanism of Water Pressure Blasting and Its Enginieering Application

作　　者：周超[1,2] 李飞[1,2] 刘非非[1,2] 赵帅[1,2] 

机构地区：[1]中国矿业大学安全工程学院,江苏徐州221008 [2]煤炭资源与安全开采国家重点实验室,江苏徐州221008

出　　处：《煤矿安全》2011年第11期8-11,共4页Safety in Coal Mines

基　　金：国家"十一五"科技支撑计划资助项目(2007BAK29B01);国家自然科学基金重点资助项目(50534090)

摘　　要：基于我国高应力、高瓦斯和低透气性煤层赋存特点及目前煤矿区域瓦斯治理过程中存在的问题,研究了炸药在水中爆炸时煤体的应力变化、裂隙扩展等过程,数值模拟了水压爆破孔的有效影响半径,提出了将炸药的爆炸能量和水有机结合的水压爆破技术。该技术在国内有关矿井进行了应用,应用结果表明:水压爆轰产物在一定范围内使围岩和煤层应力发生改变,并沿前方煤体和巷道两帮转移,减少突出势能;同时提高煤层透气性,提高区域抽采效率,缩短区域抽采时间,有效地防治了煤与瓦斯突出和冲击地压,具有广泛的应用前景。For the problems of high concentration of gas and low permeability of coal seam, regional gas control method based on water pressure blasting. Analysis the stress and crack change of coal, Numerical simulation of the effective radius of water pressure blasting, and the technology has been carried out in the domestic relevant mine. The application results showed that the technique obviously improved the efficency of gas drawing, and shortened the gas extraction time, which implied a broad industrial application prospect.

关 键 词：高应力 高瓦斯 低透气性煤层 数值模拟 水压爆破 

分 类 号：TD713.1[矿业工程—矿井通风与安全]