深部对拉工作面采动底板变形破坏特征模拟  

Simulation on Deformation and Failure Characteristics of Mining Floor at Deep Double- longwall Face

作　　者：牛建春 张金陵 丁亚恒 王冰渡 朱术云[2] 

机构地区：[1]河南省正龙煤业有限公司城郊煤矿,河南永城476600 [2]中国矿业大学资源与地球科学学院,江苏徐州221116

出　　处：《煤矿安全》2016年第3期182-186,共5页Safety in Coal Mines

基　　金：国家重点基础研究发展计划(973计划)资助项目(2013CB036003);中央高校基本科研业务费专项资金资助项目(2014QNB53);中国博士后科学基金特别资助项目(2014T70669)

摘　　要：为了探究深部对拉工作面采动煤层底板变形破坏特征,基于城郊煤矿二水平深部完整底板某典型对拉工作面地质和开采条件基础上,进行了地层岩组划分,建立了该工作面开采的工程地质模型。通过三维数值模拟详细分析了充分采动后该面底板不同深度最大竖直应力和塑性区的分布特征,发现了这2个重要参数在底板延深方向均具有较明显的分带性特征,在判断底板破坏深度方面具有较好的一致性,获得了该对拉工作面采动底板破坏深度在27 m左右。In order to explore the deformation and failure characteristics of mining floor at deep double- longwall face,based on the geological and mining conditions of the typical deep double- longwall face in complete area in Chengjiao Coal Mine,the groups of rock mass are divided; the 3D engineering geologic model for the double- longwall face is established. The distribution characteristics of the plastic zone and the maximum vertical stress are analyzed after fully mining in different floor depths; there are quite obvious zoning features for the two important parameters in the deepening direction of mining floor,and they have a good consistency in the aspect of judging the failure depth of floor,the failure depth of the mining floor at working face is about 27 m.

关 键 词：深部底板变形破坏 对拉工作面 竖直应力 塑性区 数值模拟 

分 类 号：TD741[矿业工程—矿井通风与安全]