薄冲积层急倾斜煤层群开采地表移动规律  

Surface Movement Laws in Mining Steep Coal Seam Group of Thin Soil Layers

作　　者：赵飞[1] 杨双锁[1,2] 崔健[1] 李树峰[1] 李平[1] 

机构地区：[1]太原理工大学矿业工程学院,山西太原030024 [2]重庆大学煤矿灾害动力学与控制国家重点实验室,重庆400030

出　　处：《煤矿安全》2015年第1期40-43,共4页Safety in Coal Mines

摘　　要：采用离散元数值模拟方法对青山煤矿同一水平急倾斜煤层群开采后地表沉陷规律、煤层顶底板在重复采动条件下的移动规律进行了研究,分析了地表易产生非连续变形和突发性破坏的机理。在掌握同一水平煤层开采后地表移动规律的基础上,进行地表变形参数评价。提出建议：在模型-300~0 m范围内作为建筑物用地时以开采硬子槽煤层为主,适当增加阶段煤柱;850~1 200 m范围内作为建筑物用地时以开采大槽煤层为主,管子槽煤层配采。We uses the Universal Distinct Element Code（ UDEC） to analyze the laws of mining subsidence in steep coal stratum in Qingshan Coal Mine,as well as to research of surface deformation caused by coal seam mining and the main coal seam under the condition of repeated mining strata movement law of roof and floor,and analyzed surface discontinuous deformation and sudden failure generating mechanism under the condition of steep coal seam repeated mining. Based on mastering the surface movement law at the same level of coal mining,through the surface deformation parameter evaluation,we propose that it is given priority to mine hard coal seam from- 300 to 0 m range in model as building land,and appropriately increase stage coal pillar; from 850 to 1200 m range as building land is given priority to mine large groove seam.

关 键 词：急倾斜煤层群 地表沉陷 数值模拟 地表变形 突发性破坏 

分 类 号：TD325.1[矿业工程—矿井建设]