坚硬顶板沿空切顶成巷模拟及应用研究  

Simulation and Application Research on Hard Roof Cutting Along the Gob into Roadway

作　　者：鲁家成 Lu Jiacheng(Shanxi Coking Coal Shanxi Coal International Puxian Baozigou Coal Industry Co.,Ltd.,Linfen Shanxi 041200,China)

机构地区：[1]山西焦煤山煤国际蒲县豹子沟煤业,山西临汾041200

出　　处：《山西化工》2025年第1期208-209,212,共3页Shanxi Chemical Industry

摘　　要：为了提升煤矿煤炭产出率,利用数值模拟软件对切顶成巷技术进行研究,对切顶成巷采场顶板的应力场、位移场演化规律进行研究,发现由于切缝结构面的存在,所以在采场下位顶板随采随冒,而在采场中部以平行下沉为主、两端以回转运动为主,最终地表形成较为平缓的沉降带,并未出现明显的裂隙带和台阶下沉。同时对切顶留巷进行应用分析,发现在滞后工作面距离超过150 m之后,此时顶板下沉量稳定,留巷顶板最大下沉量为103 mm,留巷较为成功。In order to improve the coal production rate of coal mines,this article uses numerical simulation software to study the roof cutting technology and the evolution law of the stress and displacement fields of the roof of the stope.It is found that due to the existence of the cutting seam structural plane,the lower roof of the stope rises with mining,while in the middle of the stope,parallel subsidence is the main trend and the two ends are mainly in rotary motion,ultimately forming a relatively flat subsidence zone on the surface.There was no obvious crack zone or step sinking.At the same time,application analysis was conducted on the roof cutting and retaining roadway,and it was found that after the distance behind the working face exceeded 150 m,the roof subsidence was stable,and the maximum subsidence of the retaining roadway roof was 103 mm.The retaining roadway was relatively successful.

关 键 词：数值模拟 切顶留巷 演化规律 顶板下沉量 

分 类 号：TD353[矿业工程—矿井建设]