采动地裂缝动态发育规律及治理标准探讨

发布时间：2018-05-05 19:15

本文选题：西部矿区 + 开采沉陷　；参考：《采矿与安全工程学报》2017年05期

【摘要】：为了研究西部矿区浅埋煤层开采造成的地裂缝灾害,以神东矿区为研究基地,对大柳塔矿22201,52304工作面开采的地裂缝进行了持续动态监测,研究了采动地裂缝的动态发育规律,建立了采动地裂缝发育深度和宽度、落差之间的定量函数关系模型,在此基础上,提出了采动过程中的临时性地裂缝治理标准和依据。研究表明:随着工作面的推进,采动过程中的临时性裂缝呈现"增大-减小-闭合"的动态规律;地裂缝发育深度与宽度之间存在线性增大的正比例关系,深度与落差之间存在对数关系;为保证安全生产,当"由上到下"扩展的地裂缝与"自下而上"发育的导水裂隙带贯通时,临时性裂缝需要治理,治理标准为导水裂隙带高度与地裂缝深度之和大于煤层埋深,治理依据为裂缝最大安全宽度或最大安全落差。
[Abstract]:In order to study the ground fissure disaster caused by the shallow coal seam mining in the west mining area, taking Shendong mining area as the research base, the continuous dynamic monitoring of the ground fissure in the mining face of Daliuta Coal Mine (22201) 52304 is carried out, and the dynamic development law of the mining ground crack is studied. A quantitative functional model of the depth, width and drop of fractures in mining ground is established, and on the basis of this model, the standard and basis for the treatment of temporary ground fractures in the process of mining are put forward. The results show that: with the advance of the working face, the temporary cracks in the mining process show the dynamic law of "enlarging, decreasing and closing", and there is a positive proportion between the depth and width of the ground fractures. There is a logarithmic relationship between depth and drop, and in order to ensure safe production, temporary cracks need to be treated when the "top-down" extended ground fractures are connected with the "bottom-up" water-conducting fissure zone. The treatment standard is that the sum of the height of the water-conducting fissure zone and the depth of the ground fissure is greater than the buried depth of the coal seam, and the treatment is based on the maximum safe width of the fracture or the maximum safety drop.
【作者单位】：安徽大学资源与环境工程学院矿山环境修复与湿地生态安全协同创新中心;河北工程大学矿业与测绘学院;中国矿业大学环境与测绘学院;中国矿业大学信息与控制工程学院;
【基金】：国家自然科学基金项目(U1361214) 国家社科基金重大项目(14ZDB145) 安徽省科技攻关计划项目(1604a0802115) 河北省高等学校青年拔尖人才计划项目(BJ2016010)
【分类号】：TD325

【相似文献】