国内外实验室试验证明,高压水射流能够切割或破碎煤体和岩石。但是,作为一项新技术应用于煤炭生产,目前国际上还处于试验阶段。在煤炭生产中,为了提高掘进速度,许多国家都在研究各类掘进工艺。或者研制机械切割掘进机,或者采用爆破掘进。前者体积大、吨位重、造价昂贵,后者劳动条件差,容易发生事故。因此,急需寻求一种快速、安全、经济、轻便的掘进新工艺。高压水射流技术,在这方面是有希望的。国内外有关方面正 Laboratory tests at home and abroad have proved that high-pressure water jet can cut or break coal and rock. However, as a new technology applied to coal production, it is still in the experimental stage in the world. In coal production, in order to improve the speed of driving, many countries are studying various types of driving technology. Or develop mechanical cutting boring machine, or use blasting. The former is bulky, heavy tonnage, costly, the latter poor working conditions, prone to accidents. Therefore, there is an urgent need to find a fast, safe, economical and portable excavation process. High-pressure water jet technology is promising in this respect. At home and abroad are concerned