软弱风化复合顶板采动破坏规律与安全开采分析  

Analysis of the mining failure regularity and safety mining of the weak and weathered composite roof

作　　者：杨伟峰[1] 隋旺华[1] 夏筱红[1] 

机构地区：[1]中国矿业大学资源与地球科学学院,江苏徐州221016

出　　处：《中国矿业》2008年第5期61-63,67,共4页China Mining Magazine

基　　金：国家自然科学基金项目(40372123)

摘　　要：首先分析了研究区煤矿山西组煤层剖面和水文地质特征,针对软弱风化复合结构覆岩的工程地质特征,采用工程地质力学模型实验、数值模拟计算相结合的综合研究方法,分析了煤层开采覆岩破坏规律与地表移动变形特征,计算了不同煤层采厚垮落带与导水裂隙带的发育高度,对煤层安全开采影响程度进行了评价,针对性地提出了相应的防治水措施,并经过开采验证,避免了水害发生。Firstly, the Shanxi formation coal seam sections and hydrogeological features were analysed in research coal field. Based on the engineering geological characteristics of the compositely structured overburden with weakness and weathering, the failure of the overburden and ground movement and deformation during coal mining were characterized by applying comprehensive research method combining engineering geological mechanical model test and finite element numerical simulation. The development height of caving zone and water flowing fractured zone of difference thickness of coal seam were calculated. The influence degree of coal layer safety mining was assessed. The appropriate measures on prevention and cure of water were submitted purposefully, which has been confirmed by the field tests and assured that no water-intrusion hazard or sand rush would occur.

关 键 词：采动破坏 安全开采 工程地质力学模型 

分 类 号：TD325[矿业工程—矿井建设] TD823