水力压裂技术在坚硬顶板煤层放顶煤开采中的应用  

Application of Hydraulic Fracturing Technology in Top Coal Caving Mining of Coal Seams with Hard Roof

作　　者：周晓虎 ZHOU Xiaohu(Huozhou Coal Electricity Group Co.,Ltd.,Linfen 031400,Shanxi,China)

机构地区：[1]霍州煤电集团有限责任公司,山西临汾031400

出　　处：《能源与节能》2025年第3期255-257,263,共4页Energy and Energy Conservation

摘　　要：山西一煤矿3103工作面顶板无法正常垮落,由于顶板为砂岩,硬度较大,严重威胁着矿井安全生产。为解决该问题,采用水力压裂技术进行综合治理。数值模拟确定3103工作面顶板30min水力压裂半径为6m,现场实施完成后进行放顶步长考察,考察结果可知实施完成水力压裂技术后,放顶步长稳定。综合分析,水力压裂技术有效解决了3103工作面放顶步长不稳定问题。The roof of 3103 working face in a coal mine in Shanxi cannot collapse normally.Due to the high hardness of the sandstone roof,it seriously threatens the safety production of the mine.To solve this problem,hydraulic fracturing technology was adopted for comprehensive treatment.Numerical simulation determined that the hydraulic fracturing radius of the roof of 3103 working face for 30 min was 6 m.After on-site implementation,the top caving step size was inspected,and the results showed that the top caving step size was stable after the completion of hydraulic fracturing technology.Through comprehensive analysis,hydraulic fracturing technology effectively solved the problem of unstable top caving step size in the 3103 working face.

关 键 词：水力压裂 压裂半径 数值模拟 效果考察 

分 类 号：TD327.2[矿业工程—矿井建设]