巨厚白垩系砂岩下地表移动规律观测研究  

Surveying of Surface Movement Rule with Giant Thick Cretaceous Sandstone

作　　者：余学义[1,2] 刘俊杰[1,2] 郭文彬[1,2] 许文强[1,2] 

机构地区：[1]西安科技大学能源学院,陕西西安710054 [2]教育部西部矿井开采与灾害防治重点实验室,陕西西安710054

出　　处：《煤矿开采》2016年第2期15-17,14,共4页Coal Mining Technology

基　　金：高等学校博士学科点专项科研基金资助项目(20106121110003);陕西省自然科学基金(2011JS005);陕西省岩层控制重点实验室项目(13JS066)

摘　　要：针对彬长矿区开采煤层覆岩上段厚黄土层、厚洛河组砂岩的特殊条件,在亭南煤矿进行了地表移动观测。观测数据分析表明,洛河组砂岩对地表移动变形起着控制作用,在极不充分开采条件下,地表移动很小,下沉率仅为0.046,地表变形微弱,不会对地表建筑设施造成损坏;在接近充分采动条件下,地表移动增幅较大,变形明显,下沉率达到0.22,但远未达到最大下沉值;非充分采动沉陷范围与充分采动基本一致,黄土层的移动角大小取决于黄土层厚度和坡度。On the basis of thick Luohe formation sandstone and thick loess layer of upper overburden of mining coal seam of Binchang coal mine district, surface movement of Tingnan coal mine was surveyed.The results showed that surface movement deformation was controlled by Luohe sandstone, surface movement was small under extremely inadequate mining, subsidence ratio was only 0.046, surface deformation was small, buildings on surface would not be destroyed, surface movement increased obviously under nearly ex-tremely adequate mining, subsidence ratio reached 0.22, but its smaller than the maximal subsidence value, mining subsidence scope was consistent basically between inadequate mining and adequate mining, the value of loess layer movement angle depend on lo-ess layer thickness and slope.

关 键 词：白垩系砂岩 地表移动 非充分采动 角值参数 

分 类 号：TD325.4[矿业工程—矿井建设]