薄基岩厚风积沙浅埋煤层导水裂隙带高度预计  

Prediction on the Height of Water-Flowing Fractured Zone for Shallow Seam Covered with Thin Bedrock and Thick Windblown Sands

作　　者：王连国[1] 王占盛[1,2] 黄继辉[1,2] 周冬磊[1,2] 

机构地区：[1]中国矿业大学深部岩土力学及地下工程国家重点实验室,江苏徐州221008 [2]中国矿业大学力学与建筑工程学院,江苏徐州221116

出　　处：《采矿与安全工程学报》2012年第5期607-612,共6页Journal of Mining & Safety Engineering

基　　金：国家自然科学基金项目(50874103);国家重点基础研究发展计划(973)项目(2010CB226805)

摘　　要：神东矿区是我国重要的煤炭产地,矿区覆岩结构具有浅埋深、薄基岩、厚风积沙的特点,且矿区地处干旱半干旱地区,水资源匮乏,因此实行绿色开采(保水采煤)具有重要意义。本文从不同岩性岩层破坏特征出发,结合岩层承载能力、变形能力分析,以及采动过程中覆岩相关物理量变化的分析,给出了一种预计导水裂隙带高度的力学模型,并分析了大柳塔12610工作面导水裂隙带高度。覆岩裂隙动态发育模拟结果和现场观测结果表明,该力学模型是可取的。Shendong mining area, located in the arid and semi-arid areas, is an important coal origin in China, where the overburden structure has characteristics of shallow seam, thin bedrock and thick windblown sands, thus, the green mining （especially water preserving mining） has important signifi- cance in this area. Based on the failure characteristics of different rock strata, combining with the analysis of deformability, bearing capacity, and physical quantities associated with mining, a mechanical model predicting the height of water-flowing fractured zone（WFZ） is given, which is further used to analyze the height of WFZ in LW12610 of Daliuta coal mine. Both the results of numerical simulation and field observation show that the mechanical model is advisable.

关 键 词：薄基岩 厚风积沙 浅埋煤层 导水裂隙带 力学模型 数值模拟 

分 类 号：TD325[矿业工程—矿井建设]