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Method for supplying water with high voltage in cold area long and large tunnel

A technology for long tunnels and cold areas, applied in water supply installations, water supply installations, earthwork drilling, etc., it can solve the problems of long time for water leakage investigation and high construction cost, saving pool and pipeline construction, saving pipeline costs, The effect of speeding up construction

Inactive Publication Date: 2008-07-23
THE 4TH ENG CO LTD OF CHINA RAILWAY 17TH BUREAU GRP
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Problems solved by technology

[0003] The present invention provides a high-pressure water supply method for long tunnels in cold regions in order to solve the problems of high construction cost and long time for water leakage investigation in the existing method of using alpine pools for water supply in long tunnels in alpine regions

Method used

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  • Method for supplying water with high voltage in cold area long and large tunnel

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Embodiment Construction

[0010] The examples are intended to illustrate the invention without limiting it in any way.

[0011] Take the applicant's construction of the North Tianshan Tunnel as an example:

[0012] (1) Project overview

[0013] The North Tianshan Tunnel is the main tunnel of the North Tianshan Mountains. It is located in the Zhongshan District of the western section of the North Tianshan Mountains. . The elevation of Yueling pass is 2780m, the relative height difference is 500-1200m, the exit section 500m is located on a downhill slope of 1‰, and the exit section DK122+413~DK122+850 is within the station line of Montmalar Station (437m), which is double line long-span tunnels, and the rest are single-track tunnels.

[0014] The applicant has a construction and production task of 7850m in the main tunnel and 6770m in the horizontal guideway at the exit section. The construction period for the horizontal guideway is 20 months, and the construction period for the main tunnel is 36 mont...

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Abstract

The invention relates to a high pressure water supply method for the long and large tunnel in cold areas, belonging to the technical field of tunnel construction, solving the problems of high cost and long water leakage detection time existing in water supply method for the long and large tunnel in cold areas in prior art. The high pressure water supply method is characterized in that a sump pit is positioned two hundred to three hundred meters in front of the tunnel face; a piece of pumping equipment is used to transport water in the sump pit to the tunnel face by a water flowing pipeline in order to be used in construction; the depth of accumulated water in the sump pit should submerge the pumping equipment; the water volume per unit time flowing into the sump pit is more than the water volume of the pumping equipment; as the tunnel face propels forward, the old sump pit is abandoned after new sump pit is positioned in front. The high pressure water supply method for the long and large tunnel in cold areas has the advantages of saving pipeline laying length, particularly that the long and large tunnel has a large number, saving construction and winter heat insulation of pools and pipeline outside the tunnel, saving the expense of long distance maintenance of pipeline by work force and quickening construction speed in the tunnel.

Description

technical field [0001] The invention belongs to the technical field of tunnel construction, and in particular relates to a method for high-pressure water supply in long tunnels in cold regions. Background technique [0002] Usually, the high-pressure water supply in the long tunnel adopts the alpine pool, and the water is pumped to the pool on the top of the mountain by the water pump, and then the water is sent to the cave through the pipeline for the construction of each tunnel face. In cold regions, it is usually necessary to insulate the pool and pipes. The problems with this method are: 1. The laying of pipelines is long; 2. The outside of the cave needs to be kept warm; 3. It takes a long time to check for water leakage. Contents of the invention [0003] The present invention provides a high-pressure water supply method for long tunnels in cold regions in order to solve the problems of high construction cost and long time for water leakage investigation in the exis...

Claims

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Application Information

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IPC IPC(8): E21F17/00E03B1/00E03B5/00
Inventor 李永红曹国平陈鉴恩张小花
Owner THE 4TH ENG CO LTD OF CHINA RAILWAY 17TH BUREAU GRP
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