水力冲孔消突有效影响半径测定及钻孔参数优化  

Measuration on Effective Influence Radius of Hydraulic Flushing Borehole to Eliminate Outburst and Borehole Parameters Optimization

作　　者：魏建平[1] 李波[1] 刘明举[1] 温志辉[1] 李鹏[1] 

机构地区：[1]河南理工大学瓦斯地质与瓦斯治理重点实验室,河南焦作454000

出　　处：《煤炭科学技术》2010年第5期39-42,共4页Coal Science and Technology

基　　金：新世纪优秀人才支持计划资助项目(NCET-07-0257);教育部"瓦斯预测与治理"创新团队发展计划资助项目(IRT0618)

摘　　要：阐述了水力冲孔措施的消突机理,采用流量法和压力法相结合,确定了水力冲孔有效影响范围为7.6-8.0 m。针对义安矿的三软低透气性突出煤层的实际情况,将6.5 m作为水力冲孔有效影响半径,控制范围为倾向29 m,走向36 m。根据确定的水力冲孔有效影响半径,合理布置水力冲孔钻孔并优化钻孔布置参数,在防止消突范围内出现空白带的情况下,原来施工的每个钻场布置的20个水力冲孔钻孔减少到14个。The paper stated the outburst elimination principle of the hydraulic flushing borehole measures.The combination with the flow method and pressure method was applied to determine the hydraulic flushing borehole with an effective influence ranging from 7.6 m to 8.0 m.According to the actual condition of the low permeable outburst seam with soft roof,soft coal and soft floor in Yi＇an Mine,the effective influence radius of the hydraulic flushing borehole was set to 6.5 m,the control range was set to 29 m in tendency and the strike was set to 36 m.According to the effective influence radius of the hydraulic flushing borehole set,the hydraulic flushing borehole drilling was rationally arranged and the borehole arrangement parameters were optimized.In order to prevent the blank zone occurred in outburst elimination scope,20 hydraulic flushing boreholes for each drilling site in previous construction was reduced to 14 hydraulic flushing boreholes.

关 键 词：有效半径 水力冲孔 钻孔 煤与瓦斯突出 

分 类 号：TD713[矿业工程—矿井通风与安全]