Tangshan Kailuan Linxi Mining Corporation Ltd.
Kailuan Energy Chemical Co., Ltd.
School of Safety Engineering, North China Institute of Science and Technology

深部煤层群的开采由于不同层位、不同位置工作面之间的相互扰动和叠加效应,使其地表沉陷规律较单一工作面开采变得更为复杂,地表沉陷灾害更为严峻。为此,本文以林西矿深部煤层群多工作面开采为研究对象,采用小基线集干涉测量技术(SmallBaselineSubsetInSAR,SBAS-InSAR)获取地表累计下沉量,以此对深部煤层群开采条件下地表沉陷规律进行了分析。研究表明:与浅部开采相比,深部开采的边界角值略大,开采导致的地表沉降范围偏小。煤层群空间开采布局对地表沉降分布范围与沉降量影响较大,其中地表沉陷范围主要取决于煤层群的外围工作面开采,煤层群内部的工作面开采主要影响沉降量,对于地表沉陷范围影响较小。本文研究成果丰富了深部煤层群开采地表沉陷规律,对于矿山地表沉陷灾害的预防和治理具有重要意义。

Due to the mutual disturbance and superposition effect between working faces in different layers anddifferent positions, the mining of deep coal seam group makes the surface subsidence law more complicatedthan that of single working face mining, and the surface subsidence disaster is more serious.Therefore, takingthe deep coal seam group mining in Linxi Mine as the research object, this paper uses the Small Baseline Subset InSAR (SBAS-InSAR) technology to obtain the cumulative surface subsidence, and analyzes the surfacesubsidence law under deep coal seam group mining conditions.The study shows that compared with shallowmining, the boundary angle of deep mining is slightly larger, and the surface subsidence range caused by mining is smaller.The spatial mining layout of coal seam group has a great impact on the distribution range and subsidence amount of surface subsidence, among which the surface subsidence range is mainly determined bythe outer working face mining of coal seam group, and the mining of inner working faces mainly affects thesubsidence amount, with a relatively small impact on the surface subsidence range.The research results enrichthe surface subsidence law of deep coal seam group mining and have important significance for the preventionand treatment of surface subsidence disasters in mining areas.

国家自然科学基金面上项目(52274165)