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近几十年来,锚杆在各国地下工程中的使用获得了蓬勃的发展。我国在采矿、铁道和水电等工程中,大量使用锚杆加固围岩和喷锚支护岩壁,也取得了不少的成功经验。笔者在省内的喷水洞电站和洛泽河电站施工中,曾采用楔缝式锚杆悬吊拱架,挂模扎筋,进行地下厂房顶拱混凝土浇筑;采用注浆锚杆局部锚固顶拱,进行地下厂房的开挖,均获得成功,加快了工程施工进度,减少了工程投资,对地下洞室的施工有一定的参考价值,兹简单介绍如下:
In recent decades, the use of rock bolts in underground engineering in various countries has been booming. In the mining, railway and hydropower projects in our country, a great deal of successful experience has been obtained by using a large number of anchors to reinforce surrounding rock and spraying and supporting rock walls. The author in the province of Sprinkler Power Station and Luo Zehe power station construction, have used wedge seam bolt hanging arch, hanging tie bar, the roof of the underground plant concrete arch pouring; Arch, the excavation of underground power plants, have been successful, speeding up the construction progress, reducing the project investment, the construction of underground caverns have some reference value, it is briefly described as follows: