期刊文献+

胡家河煤矿导水裂隙带发育高度研究 被引量:9

Research on the development height of water flowing fracture zone in Hujiahe coal mine
下载PDF
导出
摘要 导水裂隙带高度是煤层顶板水害防治中需要考虑的关键因素。胡家河煤矿采用综采放顶煤工艺开采4#煤层,在采放高度达到13 m时,应用"三下规范"中两个公式计算出的导水裂隙带发育高度分别为58. 88 m和82. 11 m,通过RFPA数值模拟表明计算值与实际值相差较大。当工作面推进到140 m时,导水裂隙带发育高度达到最大值204 m,其后不再随工作面的推进而向上发育。钻孔冲洗液漏失量观测结果表明,导水裂隙带发育高度为225 m。综合确定胡家河煤矿导水裂隙带发育高度为225 m,裂采比为17. 3。 The height of water flowing fracture zone is the key factor in coal mine water prevention and control.Hujiahe coal mine adopts fully mechanized caving technology to mine No.4 coal seam,and the mining height reaches 13m.The development height of water flowing fracture zone is calculated by"three under"regulations as 58.88-82.11m,simulated by RFPA as 204m,and observed by borehole flushing fluid leakage as 225m.The calculated value is quite different from the observed value.The comprehensive analysis shows that the development height of water flowing fracture zone in Hujiahe coal mine is 225m,and the ratio of fracture height to mining height is 17.3.
作者 闫鑫 侯恩科 袁西亚 郝宝利 YAN Xin;HOU En-ke;YUAN Xi-ya;HAO Bao-li(School of Geology and Environment,Xi'an University of Science and technology,Xi'an 710054,China;Shaanxi Binchang Hujiahe Mining Co.,Ltd.,Changwu 713600,China)
出处 《陕西煤炭》 2019年第1期51-53,132,共4页 Shaanxi Coal
关键词 采煤工作面 导水裂隙带 RFPA 数值模拟 coal mining face water flowing fracture zone RFPA numerical simulation
  • 相关文献

参考文献8

二级参考文献67

共引文献592

同被引文献107

引证文献9

二级引证文献32

相关作者

内容加载中请稍等...

相关机构

内容加载中请稍等...

相关主题

内容加载中请稍等...

浏览历史

内容加载中请稍等...
;
使用帮助 返回顶部