同宝煤矿15号煤层首采面采空区积水下安全开采评价  

Safety Mining Evaluation of Goaf Water on the First Mining Face of No.15 Coal Seam in Tongbao Mine

作　　者：张翔 郝辰伟 王立三 赵德康 ZHANG Xiang;HAO Chenwei;WANG Lisan;ZHAO Dekang(Shanxi Lanhua Sci-tech Venture Co.,Ltd.,Gaoping 046700,China;College of Mining Engineering,Taiyuan University of Technology,Taiyuan 030024,China)

机构地区：[1]山西兰花科技创业股份有限公司,山西高平046700 [2]太原理工大学矿业工程学院,太原030024

出　　处：《山西煤炭》2024年第1期47-56,共10页Shanxi Coal

摘　　要：为保证同宝煤矿15105首采面安全回采,使用不同的计算方法,对导水裂隙带高度、保护层厚度和3号煤层开采底板破坏深度进行分析,并结合数值模拟方法,分析评价15105首采面上覆采空区积水对首采面回采的安全性影响。结果表明:15105工作面范围内,煤间距与防水煤岩柱高度差值均大于0,即煤间距均大于防水煤岩柱高度。依据FLAC^(3D)数值模拟结果,在无构造等其他导水通道情况下,15105首采面第一阶段回采形成的导水裂缝带基本未沟通上覆3号煤层采空区积水。To ensure the safe mining on the first mining face 15105 of Tongbao Mine,this paper uses different calculation methods to analyze the height of the water-conducting fissure zone,the thickness of the protective layer,and the destruction depth of No.3 coal seam floor;then combined with the numerical simulation,it evaluates the impact of goaf water above the first mining face 15105 on the safety of the first mining face.The results show that,within the working face 15105,the difference value between the coal spacing and the height of the waterproof coal pillar is greater than 0,in other words,the coal spacing is greater than the height of the waterproof coal rock pillar.FLAC^(3D) numerical simulation shows that without other water-conducting channels such as tectonic structures,the water-conducting fracture zone multiplied by the first stage of the first mining face 15105 does not connect to the goaf water in No.3 coal seam.

关 键 词：采空区积水 FLAC^(3D) 保水采煤 安全性分析 

分 类 号：TD745[矿业工程—矿井通风与安全]