断层控制与采空塌落诱发的天山北麓某煤矿滑坡分布特征  

Landslides Controlled by Faults and Triggered by Underground Excavation at One Coal Mine at the North Foot of Tianshan Mountain

作　　者：尚彦军[1,2,3] 金维浚 张腾飞 陈全君 孟和 Shang Yanjun;Jin Weijun;Zhang Tengfei;Chen Quanjun;Meng He(Xinjiang Institute of Engineering,Urumqi,Xinjiang,830023,China;Xinjiang Key Laboratory of Geohazard Prevention,Urumqi,Xinjiang,830023,China;Institute of Geology and Geophysics,Chinese Academy of Sciences,Beijing,100029,China;Xinjiang Blackstone Energy Co.Ltd,Urumqi,Xinjiang,830017,China)

机构地区：[1]新疆工程学院,新疆乌鲁木齐830023 [2]新疆地质灾害防治重点实验室,新疆乌鲁木齐830023 [3]中国科学院地质与地球物理研究所,北京100029 [4]新疆黑石能源有限责任公司,新疆乌鲁木齐830017

出　　处：《新疆地质》2020年第1期106-112,共7页Xinjiang Geology

基　　金：地质灾害防治与地质环境保护国家重点实验室课题(SKLGP2017K021);国家自然基金课题(41772320);自治区教育厅重点专业建设项目资助。

摘　　要：地下采空区引发的地面变形已引起广泛关注,但由于断层发育的复杂性和钻探手段的局限性,对小型断层分布特征及其控制作用仍缺乏足够认识。本文以天山北麓某煤矿为例,采用现场地质调查、高密度电法物探相结合的技术手段,在2.1 km^2的矿区范围内判识出小型断层4条、滑坡6个和塌陷坑10多个。结合地下采空区和采矿揭露富水区分布情况,对断层控制作用和采空放顶诱发作用进行关联分析。结果发现,顺倾斜坡中断层控制着采空区陡立边界,同采空放顶联合作用,控制了滑坡和塌陷坑位置及规模。井下采掘中观察到煤层厚度突变、地层断距和突涌水等,进一步验证了上述结果的可靠性。The ground deformation caused by underground goaf has been widely concerned,but due to the complexity of fault occurrence and the limitation of drilling methods,the distribution characteristics and control function of small faults are not well understood.Taking a coal mine at the northern foot of Tianshan Mountain as an example,this paper uses the technical means of combination of on-site geological survey and high-density electrical geophysical prospecting to identify 4 small faults,6 landslides and more than 10 collapse pits within the mining area of 2.1 km^2.Combined with the distribution of the underground goaf and the mining exposed water rich area,the correlation analysis of the fault control effect and the induced effect of the goaf caving is carried out.The results show that the faults controls the steep boundary of the goaf,and it also controls the location and scale of the landslide and collapse pit with goaf cave in as triggering factor in the layered slope area.The intensive variation of coal seam thickness in tunnels,vertical distance of stratum and water inrush in working face,were observed in underground mining,which further verified the reliability of the above results.

关 键 词：采空区 断层 滑坡 塌陷坑 

分 类 号：P642.22[天文地球—工程地质学]