煤矿综放开采地表移动规律  

Surface movement regularity based on fully mechanized caving in coal mine

作　　者：周佳薇 吴鑫 刘峰 ZHOU Jiawei;WU Xin;LIU Feng(College of Geology Engineering and Geomatics,Chang′an University,Xi′an,Shaanxi,710054,China;Xi′an Water Conservancy Planning Survey and Design Institute,Xi′an,Shaanxi,710054,China;Yulin Ecological beings Waters and Soil Resources Service Co.,Ltd.,Yulin,Shaanxi,719300,China)

机构地区：[1]长安大学地质工程与测绘学院,陕西西安710054 [2]西安市水利规划勘测设计院,陕西西安710054 [3]榆林生态人水土资源服务有限公司,陕西榆林719300

出　　处：《测绘技术装备》2022年第2期130-134,共5页Geomatics Technology and Equipment

摘　　要：煤炭资源的高强度开采会引起地表大范围沉陷,因此煤矿开采沉陷监测十分重要。本文以陕北金鸡滩煤矿117综放工作面开采为工程实例,通过实地观测数据处理和分析,揭示该区域地表移动变形的基本规律。结果表明:工作面的平均推进速度约为8 m/d,开采深度较低,地表松散层较厚,导致开采过程中地表下沉速度较快;动态变形值较大,活跃期短,仅占总时间的30%,但变形剧烈,导致产生地表裂缝等较严重的破坏。上述地表移动变形总体符合浅埋深综放大采高工作面开采沉陷的基本规律。The high intensity mining of coal resources causes large scale surface subsidence,so the monitoring of coal mining subsidence is very important.In this paper,taking the mining of the 117 comprehensive discharge working surface of Jinjitan Coal Mine in northern Shaanxi as an engineering example,the basic law of surface movement and deformation in this area is revealed through field observation data processing and analysis.The results show that the average propulsion speed of the working surface is about 8 m/d,the mining depth is shallow,and the surface loose layer is thicker,resulting in a faster surface sinking.The dynamic deformation value is large,and the active period is short,only accounting for 30%of the total time,but the deformation is violent,resulting in surface cracks and other serious damage.The above surface movement and deformation generally accord with the basic law of mining subsidence of shallow buried deep comprehensive scale mining high working surface.

关 键 词：开采沉陷 地表移动规律 地表移动参数 

分 类 号：TD325.2[矿业工程—矿井建设]