近浅埋煤层导水裂隙带发育高度影响因素的数值模拟  

Numerical Simulation on Influencing Factors of the Developing Height of Water Flowing Fractured Zone in Shallow Seams

作　　者：刘学生[1] 张明[1,2] 宁建国[1] 谭云亮[1] 

机构地区：[1]山东科技大学资源与环境工程学院,山东青岛266590 [2]新汶矿业集团有限责任公司,山东新泰271200

出　　处：《山东科技大学学报（自然科学版）》2012年第5期31-36,共6页Journal of Shandong University of Science and Technology(Natural Science)

基　　金：教育部长江学者和创新团队发展计划项目(IRT0843);"矿山灾害预防控制"省部共建国家重点实验室培育基地基金项目;山东科技大学"矿山压力与岩层控制"创新团队基金项目;山东科技大学研究生科技创新基金项目(YCB120108)

摘　　要：以鲁新矿11煤首采面的水文地质条件为背景,采用FLAC3D数值模拟软件,研究了工作面长度、采高和采煤方法对导水裂隙带发育高度的影响。结果表明:随工作面长度和采高增加,覆岩导水裂隙带高度也增加,但工作面长度对覆岩导水裂隙带高度起主导作用。确定鲁新矿11煤首采面合理的工作面长度为150m,采高为3m;开采下分层时,导水裂隙带约增大1.5～5.5m;与采用分层综采相比,下分层采用综放开采时,导水裂隙带发育高度约增加2～4m。Taking the hydrological and geological conditions of the first coalface in No.11 seam of Luxin coalmine as the background,the effects of face lengths and mining heights on the maximum height of water flowing fractured zone were studied by using FLAC3D software.The simulation results illustrated three important facts.The height of fractured zone increased with the increases of face length and mining height,but the face length played a leading role.The rational face length was 150 m while the mining height was 3 m.The height of fractured zone increased about 1.5-5.5 m when the lower slice was mined,but compared with the slicing fully-mechanized mining method,the height of fractured zone was about 2-4 m larger than that when the fully-mechanized caving method was used in mi-ning of lower slice.

关 键 词：工作面长度 采高 开采方法 导水裂隙带高度 数值模拟 

分 类 号：TD325[矿业工程—矿井建设]