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六十年代初,冶金部武汉冶金安全技术研究所将喷射混凝土(以下简称喷土)支护技术引进我国,冶金矿山首次在铜官山矿进行试验。随后各工业部门的地下工程相继推广应用。诚然,喷土支护确有许多优点,但为在井巷工程中合理的应用,有些问题也还值得进一步商讨。 (一)岩体结构分类岩体由岩石组成,是地质体的一部分,工程地质上把它划分为五类(表1)。
In the early 1960s, Wuhan Metallurgical Institute of Metallurgical Safety Technology of the Ministry of Metallurgy will be sprayed concrete (hereinafter referred to as soil) support technology into China, the first time in the Metallurgical Mine Tongguan Mine. Subsequent underground engineering departments have been promoting the use of industrial applications. Admittedly, there are many advantages of soil-jet supporting, but some problems are worth discussing further for the reasonable application in the well-lane engineering. (I) Classification of Rock Mass The rock mass is composed of rocks and is a part of the geological body. It is divided into five categories according to engineering geology (Table 1).