特厚冲积层失水溃砂现场处置及地表沉降监测研究

发布时间：2018-03-02 21:27

本文选题：特厚冲积层　切入点：地表沉降　出处：《河南理工大学学报(自然科学版)》2017年03期 　论文类型：期刊论文

【摘要】：为解决李粮店煤矿特厚冲积层突发涌水、溃砂造成的地面快速下沉问题,采取井筒紧急填沙、注水的处置措施,持续监测受影响区域的地表沉降,有效地减缓了地表下沉。研究结果表明:处于特厚冲积层层位的井筒内壁发生涌水、溃砂灾害时,对矿井井筒进行充填和水体回灌可以有效地遏制地表沉降;沉降范围以出水点为中心,向四周方向近似呈圆形沉降发展,最大下沉值为2.7 m,沉降面积约为121 853 m~2,周长约为1 455 m;失水地表沉降没有影响到煤矿附近高铁和高速的安全运行。
[Abstract]:In order to solve the problem of rapid ground subsidence caused by sudden flooding of thick alluvium in Lililiangdian Coal Mine, the emergency sand filling in wellbore and the disposal of water injection are adopted to continuously monitor the surface subsidence in the affected area. The results show that water gushing occurs on the inner wall of the shaft in the thick alluvial layer, and when the sand collapse disaster occurs, filling the shaft and recharging the water body can effectively restrain the surface subsidence. The settlement range is centered on the point of water, and is approximately circular in the direction of settlement. The maximum subsidence value is 2.7 m, the settlement area is about 121,853 mm2 and the circumference is about 1,455 m.The ground subsidence of water-losing surface does not affect the safe operation of high-speed iron and high speed in the vicinity of the coal mine.
【作者单位】：河南理工大学能源科学与工程学院;煤炭安全生产河南省协同创新中心;郑州煤炭工业(集团)有限责任公司;
【基金】：国家自然科学基金资助项目(51374092) 国家自然科学煤炭联合基金重点资助项目(U1261206)
【分类号】：TD325.4;TD745

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