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将喷嘴出口压力大于140MPa定义为超高压水射流。介绍了早期超高压水射流钻孔试验及其应用,综述了超高压水射流辅助深井钻孔技术的发展状况,概括了超高压水射流辅助破岩机理和岩石性质与水射流结构参数对破岩效果的影响规律。在此基础上,对今后超高压水射流辅助破岩技术的研究提出了一些建议。
The nozzle outlet pressure greater than 140MPa is defined as ultra-high pressure water jet. This paper introduces the drilling experiments and their applications of ultrahigh-pressure water jet in the early stage. The development of drilling technology assisted by ultrahigh-pressure water jet is summarized. The mechanism of rock breaking assisted by ultra-high pressure water jet, rock properties and structural parameters of water jet are summarized. Effect of the law. On this basis, some suggestions are put forward for the research on the technology of auxiliary rock breaking assisted by ultra-high pressure water jet in the future.