厚硬基本顶短壁工作面预裂切顶技术应用研究  

Study on the application of pre-splitting roof cutting technology in short wall working face with thick and hard basic roof

作　　者：张永刚 Zhang Yonggang(Xinzhi Mine,Huozhou Coal Power Group Co.,Ltd.,Linfen 031412,China)

机构地区：[1]霍州煤电集团有限责任公司辛置煤矿,山西临汾031412

出　　处：《煤炭与化工》2024年第4期32-35,39,共5页Coal and Chemical Industry

摘　　要：为了解决辛置煤矿厚硬基本顶条件下短壁综采工作面的安全高效回采难题,采用FlAC3D数值模拟软件模拟研究了工作面在初次采动影响下的顶板位移变化情况以及采场支承压力演化特征,对比分析了工作面在不同推进距离情况下的矿压显现规律,并且提出了适用于该短壁工作面的双向聚能爆破预裂切顶技术方案。结合现场实际情况及监测结果,认为双向聚能爆破预裂切顶技术的应用实现了坚硬顶板的弱化处理,缓解了工作面的矿压显现程度,能够满足矿井安全高效生产。In order to solve the problem of safe and efficient mining of short wall fully mechanized mining face under the condition of thick and hard basic roof in Xinzhi Mine,the variation of roof displacement and the evolution characteristics of stope abutment pressure under the influence of primary mining were simulated and studied by FlAC3D numerical simulation software,and the mine pressure behavior law of working face under different advancing distance was compared and analyzed.The technical scheme of pre-splitting and roof cutting by two-way concentrated blasting was put forward,which was suitable for the short-wall face.Combined with the actual situation in the field and the monitoring results,it was considered that the application of the pre-splitting roof cutting technology of two-way concentrated blasting realized the weakening treatment of the hard roof,alleviated the pressure performance of the working face,and could meet the safe and efficient production of the mine.

关 键 词：基本顶 坚硬顶板 预裂爆破 数值模拟 

分 类 号：TD327.2[矿业工程—矿井建设]