井巷锚喷支护作为一种经济、快速、安全的地下工程支护方法,在煤矿生产中早已被采用。但人们对于锚喷支护作用机理的认识却很不清楚,设计中常因缺乏充分的理论根据,无法广泛予以采用。为此,我院承担了这项课题的研究工作。研究工作中,地应力测试是一重要内容,而测试地应力,又要打出一系列可以放置各种测试探头的钻孔。这 As a kind of economical, fast and safe underground engineering support method, anchor and shotcrete support in mine shaft has been adopted in coal mine production. However, people’s understanding of the mechanism of bolt-shotcrete support is very unclear. In the design, it is often not adopted due to the lack of sufficient theoretical basis. To this end, our hospital assumed the task of research. In the research work, the in-situ stress test is an important part. In the test of the ground stress, a series of drilling holes for various test probes can be made. This