摘要
针对新河煤矿3302工作面薄基岩厚冲积层条件下煤层开采易发生透水事故的隐患,建立"砌体梁"结构模型并分析其稳定性,利用数值模拟的方法模拟倾斜工作面覆岩导水裂隙带发育高度,最后通过现场测试进行验证。结果表明:薄基岩厚冲积层条件下的倾斜工作面基本顶在发生破断后形成的"砌体梁"结构易发生回转变形失稳和滑落失稳,采空区导水裂隙带发育高度为55.3m,裂采比为11。
This research was conducted for solution to the flooding accidents and other hidden dangers in mining on thin bedrock and thick alluvium coal seam in the 3302 working face of Xinhe coal mine. Firstly, a structure model of “stacked layer of blocks” was built and its stability was analyzed. Secondly, the height of water-flowing fracture zone developed was studied through numerical simulation. Lastly, the results were verified by in-situ measurement. The research shows that the main roof of slope overlying strata is liable to damage under the condition of thin bed- rock and thick alluvium, and height of water-flowing fracture zone is 55.3 m, in which the ratio of the height of the fractured zone to the mining height is 11.
出处
《山东科技大学学报（自然科学版）》
CAS
2014年第6期85-90,共6页
Journal of Shandong University of Science and Technology(Natural Science)
基金
国家自然科学基金项目(51344009)
山东省优秀中青年科学家科研奖励基金项目(BS2012NJ007)
山东科技大学"矿山压力与岩层控制"创新团队基金项目(2010KYTD105)
山东省"泰山学者"建设工程专项经费
关键词
薄基岩
厚冲积层
覆岩破裂
导水裂隙带
数值模拟
thin bedrock
thick alluvium
overlying strata movement
water-flowing fracture zone
numerical simula-tion
