水压致裂矿岩预处理技术及其在自然崩落法矿山的应用实践

Pre-conditioning Technology by Hydraulic Fracturing and Its Application Practice in a Block Caving Mine

水压致裂矿岩预处理是自然崩落法矿山生产过程中的重要辅助崩落技术,对于改善矿岩崩落特性可以发挥重要作用。依托在我国首例自然崩落法矿山铜矿峪矿开展的410 m中段首采区水压致裂矿岩预处理技术应用研究项目,形成了自然崩落法矿山水压致裂矿岩预处理作业工艺与技术装备,分析了首采区矿岩崩落速率提升、大块率降低等方面取得的应用效果,实现了水压致裂矿岩预处理技术在国内自然崩落法矿山的成功应用,并提出了完善水压致裂矿岩预处理技术的进一步研究方向。

Pre-conditioning by hydraulic fracturing is an important auxiliary caving technology in the production process of block caving mine, which plays a vital role in improving rock cavability. Relying on the application research project of preconditioning by hydraulic fracturing at the start mining area of 410 m level in Tongkuangyu Copper Mine, the technology and related equipment of pre-conditioning by hydraulic fracturing in block caving mine were formed and successfully used in advancing caving rate and decreasing oversize rate. Some new study thoughts are given to promote hydraulic fracturing pre-conditioning technology.