告成矿滑动构造下导水裂隙带高度分析  

Analysis on the height of water flowing fractured zone under sliding structure in Gaocheng coal mine

作　　者：宋常胜[1] 郝宇 孙恒山 SONG Changsheng;HAO Yu;SUN Hengshan(School of Energy Science and Engineering,Henan Polytechnic University,Jiaozuo 454000,Henan,China)

机构地区：[1]河南理工大学能源科学与工程学院,河南焦作454000

出　　处：《河南理工大学学报（自然科学版）》2020年第4期1-11,共11页Journal of Henan Polytechnic University（Natural Science）

基　　金：国家自然科学基金资助项目(U1504529)。

摘　　要：为了研究告成矿滑动构造下不同类型顶板的导水裂隙带发育高度,结合告成矿地质采矿条件,利用GMS软件对25采区上覆岩层信息数字化,经算法插值后生成三维地质模型,得到了滑动构造的产状特征。基于地质模型,通过岩层拉伸率计算和数值模拟等方法,对告成矿采空区不同类型顶板的裂隙带高度进行研究。结果表明:滑动构造下的导水裂隙带高度低于常规地质采矿条件下的;滑动构造带以较厚且易碎的特征赋存,煤层采出后主要以变形为主,不易发生断裂,不能形成由下至上贯通的导水裂隙,具有一定的隔水性;滑动构造条件下,在应用《建筑物、水体、铁路及主要井巷煤柱留设与压煤开采规范》中导水裂隙带计算公式时,需考虑顶板岩层的力学性质等因素。In order to study the height of water flowing fractured zone in different types of roof under sliding structure in Gaocheng mining mine,based on the geological mining conditions of the Gaocheng coal mine,Grounder Modeling System(GMS)was used to digitize the overlying strata information of mining district 25,and the 3D geological model was generated after interpolation by the algorithm to explain the occurrence characteristics of the sliding structure.Based on the geological model,the height of water flowing fractured zone of different roof types was studied by the calculation method of rock stratum stretch rate,numerical simulation,etc.The results showed that the height of water flowing fractured zone under the sliding structure was lower than that of the conventional geological conditions,the occurrence of sliding structure was in form of large thickness and fragile.After the coal seam was mined out,the sliding structure zone was mostly deformed,and it was not easy to have water flowing fracture from bottom to top,with a certain degree of water insulation.Under the condition of sliding structure,it was necessary to consider influence factor of the mechanical properties of roof strata,when calculating the height of water flowing fractured zone based on the formula in“standard in mine production”.

关 键 词：滑动构造 覆岩反倾构造 GMS 3DEC 导水裂隙带 告成矿 

分 类 号：TD823.83[矿业工程—煤矿开采]