坚硬顶板气相切顶预裂卸压技术应用研究  

Research on application of the gas phase cutting top pre cracking pressure relief technology for hard roof

作　　者：刘晓峰 LIU Xiaofeng(Yangquan Coal Industry Group Boli Coal Mine Company Limited,Yangquan 045000,China)

机构地区：[1]阳泉煤业集团泊里煤矿有限公司,山西阳泉045000

出　　处：《建井技术》2024年第1期26-30,25,共6页Mine Construction Technology

摘　　要：坚硬顶板采场存在垮落困难或步距较大的问题,这导致矿压显现剧烈、围岩严重变形以及高成本低效返修等一系列难题。为了解决这些问题,利用气相切顶预裂卸压技术的高安全性和高效能等优势,综合实施“超前实施,联合治理”策略来控制采场围岩。基于对采场采动应力分区分析的研究,系统设计了气相切顶预裂卸压方案的具体参数,并成功地将其运用于现场。在实施过程中,通过使用高压注水和监测围岩变形等手段验证了气相切顶预裂卸压技术的良好效果。该研究成果为类似坚硬顶板条件下的采掘工程提供了宝贵经验。The hard roof stope has the problem of difficult collapse or large step distance,which leads to a series of problems such as severe rock pressure,serious deformation of surrounding rock and high cost and low efficiency repairs.In order to solve these problems,the strategy of“advance implementation and joint treatment”was comprehensively implemented to control the surrounding rock of stope by using the advantages of high safety and high efficiency of the gas phase cutting top pre cracking pressure relief technology.Based on the study of the zone analysis of mining stress in stope,the specific parameters of the gas phase top precracking pressure relief the gas phase cutting top pre cracking pressure relief scheme were designed systematically and successfully applied to the site.In the process of implementation,the good effect of the gas phase cutting top pre cracking pressure relief technology was verified by using high-pressure water injection and monitoring the deformation of surrounding rock.The research results provided valuable experience for mining engineering under similar hard roof conditions.

关 键 词：坚硬顶板 气相切顶 预裂卸压 高压注水 变形监测 

分 类 号：TD322[矿业工程—矿井建设]