Henan Polytechnic University

为了掌握浅埋深高强度开采条件下地表动态移动变形规律,以神东矿区哈拉沟煤矿22407工作面地表移动观测站实测数据为基础,阐述了地表动态移动变形的特性,得到了相关动态移动变形参数,并分析了该地质条件下动态移动变形呈现特殊规律的原因。研究结果表明:在浅埋深高强度开采条件下,地表下沉过程异常剧烈,移动变形更加集中,下沉盆地快速形成。在地表持续移动变形过程中,活跃阶段地表下沉量达到总下沉量的81.4%,最大下沉速度系数为1.73,最大下沉速度达700.5mm/d,超前影响距为82 m,超前影响角为57.8°,最大下沉速度滞后距为57 m,最大下沉速度滞后角为66.3°。

in order to grasp the laws of surace dynamic movement and deformation caused by high intensity mining with shallo w depth,based on the observation data of the surface movement obser atio tation in No 22407 minin face of falagou Mine in Shendong Mdining rea.,the featuresof the surace dynamic movement anddeformation.and relatve dynanic parameters were clarifed.Then the reason which surace dynamic movement and deformation appared was analzed under the conditin of the geology. The resuts showed that under the condition of high inensity mining with shallow dept. the prcess of suriace subsidence was exceptional fercethe surace movement and defomation was more concentratec,and the subsidence basement was formed raidly n the process of surace movement duration,the subsidence value of actve stage was 81.4%o of total subsidence value,the maimun c i.ient ofthe surace subsidence velocit was1.73,the maximum of subsidence velocity reached to 705 m / d,fore-nfluence distance and angle were &2 m and 57.8" respectivelythe lagging distance and angle of the maximunm suosidence velocty were 57 m and 66.3° respectively.

国家自然科学基金委员会与神华集团有限责任公司联合资助项目(U1261206)；