基于板壳和断裂力学理论的上覆采空区积水危险性判定技术  

Risk judgment technology of water accumulation in overlying goaf based on plate shell and fracture mechanics theory

作　　者：题正义[1] 张峰[1] 秦洪岩 朱志洁[1] TI Zhengyi;ZHANG Feng;QIN Hongyan;ZHU Zhijie(School of Mining,Liaoning Technical University,Fuxin 123000,China;Safety Engineering Institute,North China Institute of Science and Technology,Beijing 101601,China)

机构地区：[1]辽宁工程技术大学矿业学院,辽宁阜新123000 [2]华北科技学院安全工程学院,北京101601

出　　处：《煤田地质与勘探》2019年第1期138-143,共6页Coal Geology & Exploration

基　　金：国家自然科学基金项目(51704148)~~

摘　　要：为避免山西临汾胜利煤矿10号煤层采动过程中受上覆6号煤层采空区透水的威胁,利用板壳理论、断裂力学理论分别建立导水裂隙带高度和底板破裂深度的力学模型,计算10号煤层Ⅰ—Ⅵ区开采过程中导水裂隙带高度分别为46.77 m、48.86 m、56.05 m、56.14 m、56.33 m和55.20 m,6号煤层Ⅰ—Ⅳ区的破裂带影响深度分别为1.57 m、1.14 m、1.85 m和1.26 m。通过构建上覆煤层采空区积水危险性类型的划分准则,对10号煤层采动过程中受到上覆6号煤层采空区积水的危险性进行判定分析,结果表明:6号煤层Ⅰ—Ⅳ区对10号煤层的积水危险性类型均为突水型,会对10号煤开采过程产生安全威胁;6号煤层的不可采区域对10号煤层Ⅴ区和Ⅵ区的影响类型为原岩渗透型,对10号煤层Ⅴ区和Ⅵ区的回采不会构成危险性。In order to avoid the threat of water penetration from the goaf of overlying seam No.6 during mining seam No.10 in Shengli coal mine of Linfen,Shanxi,plate-shells theory and fracture mechanics theory were used to establish the mechanics model of the development height of water-conducting fissure zone and the rupture depth of the floor.The water conducting fissure zone developmental height in districts I-VI of coal seam 10 is 46.77 m,48.86 m,56.05 m,56.14 m,56.33 m and 55.20 m,and the rupture zone depth of the floor in districts I-IV areas of coal seam 6 is 1.57 m,1.14 m,1.85 m and 1.26 m.By structuring criteria for water accumulation risk classification of overlying goaf and to determine the risk of accumulated water in the goaf of coal seam 6 during the mining process of coal seam10,the determination result shows that the water accumulation risk in districts I-IV areas of coal seam 6 is of the type of water inrush for seam 10,and would threaten the mining of coal seam10.The influence of the unminable area of seam 6 on the districts V-VI of seam 10 is of permeability of primary rock,and wouldn’t threaten the coal extraction in the districts V-VI of coal seam 10.

关 键 词：采空区积水 板壳理论 断裂力学理论 导水裂隙带 破裂带 

分 类 号：TD12[矿业工程—矿山地质测量] P64[天文地球—地质矿产勘探]