镇城底矿8#煤层采场顶底板岩层破坏规律研究  

Study on Failure Law of Roof and Floor Strata of No.8 Coal Seam in Zhenchengdi Colliery

作　　者：孟庆才 Meng Qingcai(Malan Colliery,Xishan Coal Power Group,Gujiao,Shanxi 030205)

机构地区：[1]西山煤电(集团)有限责任公司马兰矿,山西古交030205

出　　处：《江西煤炭科技》2023年第1期86-89,共4页Jiangxi Coal Science & Technology

摘　　要：镇城底矿采用已有规范中的经验公式计算采煤工作面导水裂隙带高度作为防治水评价及设计依据,为验证其可靠性,通过数值模拟、现场实测等手段,探究采场顶底板岩层破坏规律。研究表明,三种方法得到的顶板垮落带、裂隙带、底板破坏带数据均较可靠,结果表明:28103工作面采场垮落带高度15.0~20.2 m之间,裂隙带高度51.9~69.7 m,底板破坏深度12.47~15 m,对镇城底矿各主采煤层有效预测、防治顶底板水害具有重要意义。As the basis for water control evaluation and design,the empirical formula in existing regulations has been used to calculate the height of the water conducting fracture zone of the coal mining face in Zhenchengdi Colliery,in order to verify its reliability,by means of numerical simulation and field measurement,the paper explores the failure law of the roof and floor strata of the stope,and obtains the following reliable data of roof collapse zone,fissure zone and floor failure zone:The caving zone height of the stope of 28103 working face is 15.0~20.2 m,the fracture zone height is 51.9~69.7 m,and the floor damage depth is12.47~15 m,which is of great significance to effectively predict and prevent the water disaster of the roof and floor in the main coal seams of Zhenchengdi Colliery.

关 键 词：垮落带 裂隙带 经验公式计算 数值模拟 瞬变电磁法探测 

分 类 号：TD325.3[矿业工程—矿井建设]