Extra-long tunnel gushing water treatment method

A treatment method and tunnel technology, which is applied in tunnels, tunnel linings, ventilation of mines/tunnels, etc., to achieve the effects of reducing construction costs, solving high-pressure water gushing problems, and saving construction period costs

Pending Publication Date: 2021-08-31
中建七局第一建筑有限公司 +1
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Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide a water gushing treatment method for super-long tunnels, which can solve the problem of water gushing in inclined shafts of super-long tunnels passing through karst fissure development areas

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[0038] In order to make the purpose, technical solutions and advantages of the present invention clearer, the technical solutions in the embodiments of the present invention are clearly and completely described below in conjunction with the accompanying drawings and specific embodiments. Obviously, the described embodiments are only the present invention. Some examples, but not all examples. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0039] As we all know, small and medium-sized karst caves in karst landforms have a high degree of development, high content of karst water and fissure water, and the karst fissures in the mountain form a vertical vein. , poor bonding between rock layers. The excavation of the inclined shaft of the tunnel will greatly break the surrounding rock, the dissolution cavity and the groove will be cut, and high head pressure will be formed fro...

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Abstract

The invention discloses an extra-long tunnel gushing water treatment method, and belongs to the technical field of tunnel construction. The extra-long tunnel gushing water treatment method comprises the steps of early-stage preparation, first-stage water pumping, second-stage water pumping, first-stage pump station construction, third-stage water pumping and fourth-stage water pumping. According to the extra-long tunnel gushing water treatment method, an air exhaust inclined shaft and an air supply inclined shaft are used for pumping water in the stages, a high-pressure water gushing problem can be solved on the premise that tunnel safety is guaranteed, a construction period of the extra-long tunnel can be effectively shortened, and construction period cost is saved; and additional excavation of adit is avoided, so that the construction cost can be effectively reduced. The extra-long tunnel gushing water treatment method is particularly suitable for the gushing water treatment of main holes and inclined shafts of the extra-long tunnels in karst landform areas, and is mainly used for the gushing water treatment of tunnel construction crossing karst-water-rich and crack-water-rich construction areas with great water gushing amount, large tunnel water storage amount and high water pressure of the main holes of the tunnels.

Description

technical field [0001] The invention belongs to the technical field of tunnel construction, and in particular relates to a water gushing treatment method for an extra-long tunnel. Background technique [0002] At present, with the rapid development of my country's infrastructure construction, tunnel construction is carried out in areas with a wide distribution of karst landforms. Due to the special terrain and geological environment conditions, the degree of development of joint fissure water and karst water is relatively high, and there are many difficulties in tunnel construction. The technical difficulties are complex. In the tunnel construction, the underground river gushes water, which has a negative impact on the tunnel construction. The traditional process of tunnel water gushing treatment is mainly to divert the gushing water to the drainage tunnel or the drainage system in the tunnel. This process is suitable for the tunnel water gushing adjacent to the underground ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21F16/02E21F1/00E21D11/10
CPCE21D11/10E21F1/003E21F16/02
Inventor 孟令举徐洪瑞李芒原寇小勇彭勋田鹏刘楠楠刘翔郎志军黄林超陈东芝姬欧鸣檀建武尹燕征
Owner 中建七局第一建筑有限公司
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