郑州矿区告成矿煤层底板“下三带”范围研究与应用  

Research and Application of“Lower-three-zone”in Coal Floor of Gaocheng Coal Mine in Zhengzhou Mining Area

作　　者：刘玉卫 商铁林[3] 王浩[1] 刘应然 LIU Yu-wei;SHANG Tie-lin;WANG Hao;LIU Ying-ran(School of Civil Engineering, Zhengzhou University of Technology, Zhengzhou 450044, China;Zhengzhou Coal Industry (Group) Co. Ltd., Zhengzhou 450042, China;School of Energy Engineering, Yulin University, Yulin 719000, China)

机构地区：[1]郑州工程技术学院土木工程学院,河南郑州450044 [2]郑煤集团工程技术研究院,河南郑州450042 [3]榆林学院能源工程学院,陕西榆林719000

出　　处：《榆林学院学报》2021年第2期5-8,共4页Journal of Yulin University

基　　金：国家自然科学基金项目(52064047);陕西省科技计划项目(2020SF-418);榆林学院博士科研启动基金项目(17GK06)。

摘　　要：由于告成矿属煤与瓦斯突出矿井,矿区要在煤层底板布置瓦斯抽放巷疏放瓦斯,这就需要掌握巷道底板三带的范围。通过对告成煤矿21061工作面三软煤层巷道底板现场调查、岩石物理力学实验、数值分析,得到了巷道底板下三带的范围。研究表明:底板破裂带最大深度达到13 m;裂隙带在工作面倾向的下侧深度达到25.3 m,在工作面中部达15.6 m,在工作面上侧达21.1 m;而原岩带处于底板深度21 m外,适合布置底板巷道。Because Gaocheng coal mine is rich in coal and gas,it is necessary to master the scope of three zones of floor to arrange gas drainage roadway in coal seam floor.Based on the field investigation,physical and mechanical experiment of rock and numerical analysis of roadway floor in three soft coal seams of 21061 working face in Gaocheng coal mine,the scope of three zones under the roadway floor is obtained.The results show that the maximum depth of the floor fracture zone is 13 m;the depth of the fissure zone in the lower side of the working face dip is 25.3 m,15.6 m in the middle of the working face,and 21.1 m in the upper side of the working face,while the original rock zone is beyond the floor depth of 21 m,which is suitable for floor roadway layout.

关 键 词：瓦斯突出 煤层底板 下三带 裂隙带 破裂带 原岩带 

分 类 号：TD325[矿业工程—矿井建设]