山区松散堆积边坡下控制开采研究  

Research on Control Mining Under Loose Accumulative Slope in Mountainous Area

作　　者：余学义[1,2] 陈大阳[1,2] 王金东[1,2] 

机构地区：[1]西安科技大学能源学院,陕西西安710054 [2]教育部西部矿井开采与灾害防治重点实验室,陕西西安710054

出　　处：《煤矿安全》2016年第5期227-230,234,共5页Safety in Coal Mines

基　　金：高等学校博士学科点专项科研基金资助项目(20106121110003);陕西省自然科学基金资助项目(2011JY005)

摘　　要：针对古叙矿区山区松散堆积边坡条件下,开采坡体滑移、滑坡灾害频发的情况,以四川泸州某矿为例,在分析地质采矿条件和滑坡产生的机制及规律的基础上,建立以不平衡推力迭代传递法为基础的坡体稳定性分析模型,通过计算得出坡体处于极限平衡状态下的抗滑段与主滑段面积之比为1/3.02。运用相似材料模拟对比研究得出:当S_A∶S_M<1∶3.02时,斜坡松散层在开采作用下产生滑移;当SA∶SM>1∶3.02时,斜坡松散层在开采作用处于稳定状态。结果表明,应用抗滑段与主滑段比值的方法,确定开采方案,是实现山区松散堆积边坡下开采滑坡灾害控制的有效途径之一。The slope slide and disasters happened frequently in Guxu Coal Mine which locates under high - steep slope overburdened by loose accumulative. Taking one coal mine for instance, which locates in Luzhou City of Sichuan Province, and based on the analysis of both the geological conditions and the mechanism and discipline of the slope formation, it concludes the stability analysis model based on imbalance thrust method. The calculation result shows that the ratio between anti - sliding area SA and main - sliding area SM under the limit equilibrium state is 1 ： 3.02. The similar simulation experiment shows that when SA ： SM 〈 1 ： 3.02, the loose accumula- tive formation slides under the influence of the coal mining. When SA： SM 〉 1： 3.02, the loose accumulative formation keeps still under the influence of coal mining. The research indicates that using SA/SM ratio to determine the mining scheme is an effective way to control the slope sliding disasters which locates under loose accumulative formation.

关 键 词：边坡 松散堆积层 采动滑坡 不平衡推力法 控制开采 

分 类 号：TD824.7[矿业工程—煤矿开采]