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Construction method for excavating shield receiving well in complex geology

A technology for complex geology and receiving wells, which is applied in the direction of sinking, shaft equipment, shaft lining, etc., can solve the problems such as the inability to handle road occupation procedures, and achieve the effects of avoiding wellhead collapse accidents, improving construction safety, and reducing the probability of landslides

Inactive Publication Date: 2019-09-06
THE FOURTH ENGIENERING OF CHINA RAILWAY18 BUREAU GROUP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Due to the small size of the site, after many consultations with the traffic police department, it is still impossible to go through the formalities of occupying the road, so the narrow strip between Gulou Road and Yuantong Mountain can only be used as the construction site

Method used

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  • Construction method for excavating shield receiving well in complex geology
  • Construction method for excavating shield receiving well in complex geology
  • Construction method for excavating shield receiving well in complex geology

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Embodiment Construction

[0046] In order to further understand the content, characteristics and effects of the present invention, the following examples are given, and detailed descriptions are given below with reference to the accompanying drawings. It should be noted that this embodiment is descriptive, not restrictive, and cannot thereby limit the protection scope of the present invention.

[0047] A construction method for complex geological excavation shield receiving well, characterized in that: comprising the following steps,

[0048] Step 1: Construction of the locking ring beam 1; measure and determine the excavation contour line of the locking ring beam on the ground to be excavated; after excavating the locking ring groove to the design elevation, lay a bedding layer on the bottom of the locking ring groove and Bind the steel bars of the locking ring; at the same time, pre-embed the embedded parts and guardrails of the gantry crane foundation, and pre-embed the connecting bars downward when...

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Abstract

The invention discloses a construction method for excavating a shield receiving well in complex geology. The technologies of opening-locking ring beam construction, surface layer earth excavation, rock stratum blasting excavation, mortar anchor rod construction, steel structure grille construction, C20 early strength concrete spraying construction, and steel structure cross brace erecting are sequentially adopted, excavation construction of the shield receiving well can be conducted in a central urban area with the narrow construction environment; a carbon dioxide blasting technology is used for replacing explosive blasting, the adverse influences on central urban area buildings and construction safety and the adverse influence of pollution and the like on the surrounding environment are avoided; and stage-type construction is adopted, the second step to the seventh step in the construction method are repeated at each excavation stage, the side wall of the shield receiving well is anchored, supported, subjected to concrete pouring shaping and subjected to cross brace stable construction, the collapse risk of the side wall of the shield receiving well under the complex geological condition is reduced, geological sedimentation around the shield receiving well is avoided, the surrounding urban buildings of the shield receiving well are effectively protected, the construction method is easy to operate and high in safety, and the environment influence is small.

Description

technical field [0001] The invention relates to the technical field of building construction, in particular to a construction method for excavating shield receiving wells in complex geological conditions. Background technique [0002] Kunming Rail Transit Line 5 Civil Engineering Construction Bid 4 includes 2 stations and 2 sections, with a total line length of 2.076km. The tender section is located in the center of Kunming, with complex geological conditions and difficult construction. [0003] Yuantong Park Station is located to the north of Yuantongshan Zoo, and a shield receiving shaft for the construction of the mine crossing line is set at the position of the end shaft of the station. The design starting mileage of Yuantong Park shield receiving shaft is right DK5+625.683, and the design end mileage is right DK5+633.783. The net length of the foundation pit is 25m, the net width is 8.1m, the depth is about 22.85m, and the thickness of the roof covering soil is about ...

Claims

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Application Information

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IPC IPC(8): E21D9/06E21D1/00E21D5/11E21D20/00E21D20/02F42D3/04
CPCE21D1/00E21D5/11E21D9/06E21D20/003E21D20/021F42D3/04
Inventor 温淑荔陈雅辉钱生泽王春吴晓腾察伟亚田渊文徐士英李岩殷永书
Owner THE FOURTH ENGIENERING OF CHINA RAILWAY18 BUREAU GROUP
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