坚硬顶板条件下综合强制放顶技术应用实践  

Application Practice of Comprehensive Forced Caving Technology Under Hard Roof Condition

作　　者：孟辉 Meng Hui(Production Management Department of Fenxi Mining Industry Group Co.,Ltd.,Jiexiu Shanxi 032000,China)

机构地区：[1]汾西矿业集团生产管理部,山西介休032000

出　　处：《山西化工》2025年第1期210-212,共3页Shanxi Chemical Industry

摘　　要：针对汾西矿业集团贺西矿3413工作面易发生悬顶现状,综合运用现场调研、矿压观测、理论分析等研究手段,对3413工作面的矿压显现现状及机理进行分析,在此基础上,设计了“水力压裂切顶”和“施工切顶眼”的综合强制放顶方案,经过具体的切顶试验后,对水压致裂前后的矿压显现特征进行对比,工作面来压强度整体降幅明显,且在整个工作面范围内分布更为均衡,有效防止因上隅角悬顶造成的瓦斯积聚风险,实现了预期的安全及技术目的,具有一定的推广应用价值。In response to the current situation of roof overhang in the 3413 working face of Fenxi Mining Group Hexi Mine,comprehensive research methods such as on-site investigation,mining pressure observation,and theoretical analysis were used to analyze the current situation and mechanism of mining pressure manifestation in the 3413 working face.Based on this,a comprehensive forced top caving plan of"hydraulic fracturing roof cutting"and"construction roof cutting eye"was designed.After specific roof cutting tests,the characteristics of mining pressure manifestation before and after hydraulic fracturing were compared.The overall pressure intensity of the working face decreased significantly,and the distribution was more balanced throughout the entire working face,effectively preventing the risk of gas accumulation caused by roof overhang in the upper corner,achieving the expected safety and technical goals,and having certain promotion and application value.

关 键 词：坚硬顶板 采空区悬顶 瓦斯超限 水压致裂 切顶眼施工 

分 类 号：TD823.49[矿业工程—煤矿开采]