冲击地压危险性预评价与实践 .pdfVIP

学兔兔 201 1年第10期 煤 炭 工 程 冲击地压危险性预评价与实践 潘俊锋 ，秦子晗 ，夏永学 ，王书文 ， (1．煤炭科学研究总院开采设计研究分院，北京 100013； 2．天地科技股份有限公司开采设计事业部，北京 100013) 摘 要：基于采动高集中应力对冲击地压的显著影响作用，采用有限差分数值方法对开采区 域分采区、工作面以及巷道，进行了冲击危险区域划分；利用弹性基础梁 “见方”理论划分得 出，21141工作面回采过程中将经历七个危险时期，其中第六危险期为特别危险期。在危险区 域、危险时期划分基础上，进行了冲击地压监测与防治实践，实践表明，对冲击地压煤层预先进 行冲击危险区域、危险时期划分，有效指导了回采期间冲击地压监测与防治工作。 关键词：冲击地压；危险性预评价；冲击危险区域；危险时期；应力集中 中图分类号：TD324 文献标识码：A 文章编号：1671—0959(2011)09-0083-04 Pre——Assessment and Practices on Danger of Mine Pressure Bumping PAN Jun—feng ，QIN Zi—han ，XIA Yong—xue ，WANG Shu—wen ， (1．Mining and Design Branch，China Coal Research Institute，Bering 100013，China； 2．Mining and Design Department，Tiandi Science and Technology Company Ltd．，Beijing 100013，China) Abstract：Base on the mining dynamic high concentrated stress obviously affected to the mine pressure bumping，the finite difference numerical method was applied to divide the mine pressure bumping dangerous area for the mining area， coal mining face and gateway in the mining region．The plastic basic beam “square’’theory was applied to divide and obtain the seven dangerous periods occu~ed during No．21 141 coal mining process and the sixth dangerous period would be special dangerous period．Base on the dividing of the dangerous region and the dangerous period，the mine pressure bumping monitoring and measuring as well as the prevention and control practices were conducted．The practices showed that the dividing of the mine pressure bumping dangerous region and the dangerous period for the pressure bumping seam