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The expanding tunnel and constructing method of the existing tunnel which was constructed in rock masses
The expanding tunnel and constructing method of the existing tunnel which was constructed in rock masses
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机译：岩体中既有隧道的扩建隧道及施工方法
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摘要
The present invention relates to expand its technology and construction method of tunnel construction on existing ground conditions consisting of rock such, installing the housing at regular intervals in the lining of the existing tunnel, and drilling a step-by-step to a predetermined size of the unit by installing a ball drilling rigs equipped with a bucket on the auger housing and pouring concrete reinforcement after the reinforcement in the drilling hole After curing to form an extended tunnel excavation hole wall to remove the rock between the tunnel lining and expand existing tunnel hole tunnel walls is an extension to install. ; How will housing construction objection to a half of the total housing in the rock drilling length of the upper lining of the tunnel to the existing installation of the housing with a certain length and a certain distance of an existing tunnel lining and slowly entered the yuapjaek Steps to install; ; half of the entire length of the housing to install the drilling equipment is mounted on the upper auger dredges lining to protrude to the existing tunnel entrance, and step-by-step basis by drilling a hole expansion drilling tunnel Steps to install a blank wall; ; The steps for installing rebar in the assembly and construction unit excavation ball over the task of curing pouring concrete to form the extended wall extension tunnel hole tunnel wall ball; ; removing the excavation of rock between the tunnel lining and expand existing tunnel hole wall; ; the housing drilling equipment installed in the housing to move to the next drilling the method comprising the step of repeatedly to form an extended tunnel ball end wall construction of the extended tunnel using; And ; will clean the road surface in order to communicate the packaging and transportation of the tunnel construction is completed expansion of facilities by installing lights in the tunnel to allow access to the tunnel.
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