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一、争论 立井锚喷支护是在谨慎地摸索中干起来的,目前使用数量尚少。据统计,1980年全国煤矿建成7719米立井,其中用锚喷作永久支护的只有355.3米,占4.6％。1981年建成立井7450米,锚喷作永久支护的有537.6米,占7.2％,占全国1981年井巷锚喷总数1141公里的0.047％。这是立井工程的重要性所致。 立井锚喷支护分为试验、应用和争论三个阶段。开始在岩层较坚硬、稳定的浅井、风井及其他非提升井试验。在这种条件下试验,成功的把握性比较大,因而应用范围越来越广。在较坚硬稳定的岩层应用,在岩性松软的各种页岩、遇水膨胀性
First, the debate Vertical shaft spray support is carefully grope in the dry, the current number is still small. According to statistics, in 1980, the coal mines in the country built 7719 m of vertical shafts, of which only 355.3 meters were used for permanent support by anchors, accounting for 4.6%. In 1981, there were 7450 meters of vertical shafts and 537.6 meters of anchor bolts were used for permanent support, accounting for 7.2%, accounting for 0.047% of the total number of rockbolt spray holes in 1981 in the country. This is due to the importance of shaft engineering. Vertical shaft anchor spray support is divided into three stages of testing, application and controversy. Begin testing of hard, stable shallow wells, wind shafts, and other non-raised wells in rock formations. Under this condition, the test of success, the grasp of relatively large, so the scope of application is more and more widely. In the more stable and stable rock formation, in a variety of shale soft shale, water swelling