摘要
针对河南焦煤能源有限公司中马村煤矿厚煤层复合顶板在工作面开采过程中上覆岩层的裂隙发育变化规律,结合3906工作面的地质条件和开采工艺,采用理论计算和UDEC数值模拟相结合的方法对上覆岩层“三带”发育特征进行研究。结果表明:理论计算得到3906工作面垮落带的高度为42.8 m,导水裂缝带高度范围为73.03~93.87 m;UDEC数值模拟得到垮落带高度为36.8 m,导水裂缝带高度为73.30 m;理论计算和数值模拟结果与现场实测的结果基本一致,这也验证了研究结果的可靠性。
According to the variation law of fissure development of overlying strata in the mining process of 3906 working face with combined roof in thick coal seam in Zhongmacun Coal Mine of Henan Jiaozuo Coal Energy Co.,Ltd.,combined with the geological conditions and mining technology of 3906 working face,the development characteristics of"three zones"of overlying strata were studied by theoretical calculation and UDEC numerical simulation.The results show that the height of caving zone in 3906 working face is 42.8 m and the height of water-conducting fracture zone is 73.03~93.87 m obtained by theoretical calculation;while the height of caving zone is 36.8m and the height of water-conducting fracture zone is 73.30 m obtained by UDEC numerical simulation;the results of theoretical calculations and numerical simulations are basically consistent with the results of field measurement,which verifies the reliability of the research results.
作者
李海芳
刘佳佳
杨迪
LI Haifang;LIU Jiajia;YANG Di(Zhongmacun Coal Mine of Henan Jiaozuo Coal Energy Co.,Ltd.,Jiaozuo,Henan 454005,China;College of Safety Science and Engineering,Henan Polytechnic University,Jiaozuo,Henan 454003,China;State Key Laboratory of Mining Response and Disaster Prevention and Control in Deep Coal Mines,Anhui University of Science&Technology,Huainan,Anhui 232001,China;Collaborative Innovation Center of Coal Work Safety and Clean High Efficiency Utilization,Jiaozuo,Henan 454003,China)
出处
《中国煤炭》
2023年第7期56-60,共5页
China Coal
基金
国家自然科学基金项目(52074106),河南省优秀青年科学基金项目(232300421061),河南理工大学创新型科研团队(T2023-3),深部煤矿采动响应与灾害防控国家重点实验室开放基金项目(SKLMRDPC22KF11)。
关键词
厚煤层
复合顶板
垮落带
导水裂缝带
理论计算
数值模拟
thick coal seam
combined roof
caving zone
water-conducting fracture zone
theoretical calculation
numerical simulation
