摘要
针对煤矿井下采空区老空水易突出的问题,结合试验工作面现场地质和生产条件,通过防水煤柱内应力分布特征确定了防水煤柱留设的基本原则。通过理论推导的方法确定合理的防水煤柱宽度为60 m。数值分析结果表明,留设60 m宽的防水煤柱可以有效防治老空水突出问题,消除了水灾害的隐患,保证了矿井的安全生产。
Based on old empty water burst in coal mine goaf, basic pinciples of waterproof coal pillar were determined combining geological and production conditions, as well as its internal stress distribution characteristics. Rational width of waterproof pillar was 60m through theoretical derivation method. The numerical calculating results showed that this rational width could effectively prevent old water burst, eliminate water hazards and guarantee safety production in coal mine.
出处
《煤炭与化工》
CAS
2017年第3期108-110,共3页
Coal and Chemical Industry
基金
国家自然科学基金资助项目(No.51504259)
中央高校基本科研业务费专项资金资助(No.2010YZ02)
关键词
老空水
矿井突水
防水煤柱
理论计算
old empety water
water burst in mine
waterproof coal pillar
theoretical calculating
