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A method of shield tunneling construction in pebble layer

A pebble bed and shield technology, which is applied in earthwork drilling, mining equipment, tunnels, etc., to save construction costs, reduce construction risks, and improve tunneling efficiency

Active Publication Date: 2018-09-04
HONGRUN CONSTR GROUP STOCK
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Problems solved by technology

[0003] In order to solve the problems existing in the above-mentioned prior art, the purpose of the present invention is to provide a method for shield tunneling construction in the pebble layer, which solves the problems that occur when shielding the pebble layer, and realizes effective shield tunneling in the pebble layer. excavation

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Embodiment Construction

[0019] The present invention will be described in detail below, but the present invention is not limited to the following examples.

[0020] Dalian Metro Phase 1 Section 104 project includes three stations and two sections, namely Gongcheng Street Station, Convention and Exhibition Center Station, Xinghai Square Station and the section from Gongcheng Street Station to Convention and Exhibition Center Station to Xinghai Square Station. The project starts from Toujing at the south end of Gongcheng Street Station and ends at Toujing at the north end of Xinghai Square Station. The total length of the section tunnel is about 2,500m. The design cross-section of the shield tunnel is circular, with an outer diameter of 6.0m and an inner diameter of 5.4m. Two Herrenknecht composite EPB shields are used for tunnel excavation. The upper part of the tunnel in the Gonghui section is mainly composed of pebbles, and the lower part is dominated by strongly weathered and moderately weathered...

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Abstract

The invention relates to subway tunnel shield construction technologies, in particular to a method for shield tunneling construction in a pebble bed. The method comprises the measures of muck conditioning, shield tail sealing, tool optimizing, stratum reinforcing and the like. According to the method, effective tunneling in the pebble bed is achieved, surface building settlement can be effectively controlled, construction risks are reduced, the construction cost is reduced, and the tunneling efficiency is improved.

Description

technical field [0001] The invention relates to a subway tunnel shield construction technology, in particular to a shield tunneling construction method in a pebble layer. Background technique [0002] The tunnel is the most important part of the subway project. The construction of the tunnel shield method has the advantages of fast construction speed, short construction period, easy control of the quality of the tunnel body, relatively stable quality, good anti-seepage performance, high construction safety factor, and no impact on surrounding buildings. It is extremely small, basically does not affect ground traffic, and is suitable for construction operations with a wide range of strata and complex geological conditions. With the enthusiasm for subway construction in major cities in my country, the tunnel shield construction method will be widely promoted and applied in subway construction. Although shield construction has the advantages of wide adaptability to the stratum...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21D9/06E21D9/08
Inventor 傅珺赵余夫鲍廉梵
Owner HONGRUN CONSTR GROUP STOCK
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