Construction method for reinforcement of underground excavation passage
A construction method and channel technology, applied in tunnels, earth cube drilling, mining equipment, etc., can solve the problems of large ground subsidence, inability to start subway construction, and inability to construct subway enclosure structures, so as to reduce construction costs and shorten construction periods Effect
Inactive Publication Date: 2019-11-05
广州穗岩土木科技股份有限公司
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Problems solved by technology
If the underground obstacles are not handled properly, the subsequent subway construction will not be able to start
Therefore, the treatment of underground obstacles similar to underground civil air defense passages is an important and difficult point in subway construction. If it is not handled properly, it will cause construction risks such as surrounding buildings and ground subsidence during subway construction. In serious cases, it will even lead to subway enclosures. The structure cannot be constructed
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[0021] In order to enable those skilled in the art to better understand the present invention, the technical solution of the present invention will be further described below in conjunction with the accompanying drawings and embodiments.
[0022] refer to figure 1 with figure 2 , a construction method for reinforcing underground excavation passages, the following steps are adopted:
[0023] One) at first determine the length of the civil air defense passage 6 that needs to be processed, in the present embodiment, determine the length that the civil air defense passage needs to process in conjunction with the influence range of the civil air defense passage to the underground enclosure structure is the thickness of the underground enclosure structure and each plus on both sides thereof At least 2m.
[0024] Two) in order to block the civil air defense passage treatment section determined in step 1), first the two ends of the civil air defense passage treatment section are bl...
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The invention relates to a construction structure of an underground exterior-protected construction, and discloses a blocking and strengthening structure of a civil air defence passage passing throughthe underground exterior-protected construction. The length of the civil air defence passage needing to be treated by the blocking and strengthening structure is the thickness of the underground exterior-protected construction, and at least 2m is added at each of the two sides of the civil air defence passage; the blocking and strengthening structure comprises graded broken stone blocking sections respectively formed by pouring graded broken stones at the two ends of the treatment section of the civil air defence passage; and a cement mortar dense section and a cement slurry dense section areformed by pouring cement mortar and cement slurry between the two graded broken stone blocking sections. By blocking and strengthening the underground civil air defence passage, the blocking and strengthening structure solves the problems that the subway exterior-protected construction cannot be constructed during subway construction, and the construction risk of surrounding buildings, ground settlement and the like in the subway construction is large. By the way of only dealing with an influence section, the construction period of the subway construction is greatly shortened, and the construction cost is reduced.
Description
technical field [0001] The invention relates to a construction method for an underground enclosure structure, in particular to a construction method for reinforcing an underground excavation channel. Background technique [0002] With the rapid development of my country's economy, large and medium-sized cities have launched underground rail transit construction one after another. Subway construction is mainly concentrated in the old urban area of the city, and it is arranged along the main road of the city. The old buildings on both sides of the main road are dense, and unknown underground obstacles are often encountered during the construction of the subway envelope. If the underground obstacles are not handled properly, the subsequent subway construction will not be able to start. Therefore, the treatment of underground obstacles similar to underground civil air defense passages is an important and difficult point in subway construction. If it is not handled properly, i...
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IPC IPC(8): E21F17/103E21D9/00
CPCE21D9/00E21F17/103
Inventor 王欢
Owner 广州穗岩土木科技股份有限公司