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Non-digging tube-pulling construction method

A technology of trenchless and construction method, applied in the field of trenchless pipe-drawing construction method, can solve the problems of inability to meet construction conditions, complicated underground pipelines, and inability to construct, achieve considerable economic benefits, reduce labor intensity, and construction speed. quick effect

Inactive Publication Date: 2009-06-17
江苏广宇建设集团有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the influence of geography and environment, as well as the obstruction of underground buildings, traffic congestion, and the complex arrangement of underground pipelines, the open-cut method of laying pipes can no longer meet the requirements of construction conditions, and sometimes it is even impossible to construct.

Method used

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  • Non-digging tube-pulling construction method

Examples

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Effect test

example 1

[0055] Example 1. In a factory, the middle water pile number is 2+760~3+096, the pipeline length is 336m, the original design DN500 ductile iron pipe is grooved, the water surface elevation is 9.996~11.086, and the pipeline depth is 2m on average. However, the building cannot be demolished, so the site is constructed by drawing pipe. The 336m long pipe is divided into two sections, 200m is one section, and 136m is one section. The pipe material is changed to φ500PE pipe. In the process of pulling pipe construction, there was no normal business operation of the plant, and the quality of the house structure was not damaged. The construction saves 3,500 cubic meters of earth excavation and backfilling, 120,000 yuan in labor costs, and 420,000 yuan in cost. The construction period is advanced 15 days, and the project is completed and accepted.

example 2

[0056] Example 2. The reclaimed water (reclaimed water) reuse project of a plant passes through a swimming pool. The reclaimed water pile number is 3+504~3+700, the pipeline length is 196m, the high level of the flowing water surface is 9.193~9.000, and the pipeline buried depth is 3.2m on average. For pipe drawing construction, the pipe is drawn at a time of 196m. The pipe material is φ500PE pipe. Reduce the amount of earth excavation and backfilling by 2,000 cubic meters, save 80,000 yuan in personnel costs, and save 250,000 yuan in cost. The construction period is 10 days in advance, and the project is completed and accepted.

example 3

[0057] Example 3. Pipe jacking project of a sewage pipe network, stake number: 0+035~1+500, plus 300m. The main pipe is located under the slow lane of the road and is constructed by pulling pipes. The pipe material is φ500PE pipe. Save 1,900 cubic meters of earth excavation and backfill, save 80,000 yuan in labor costs, and save 250,000 yuan in cost. The construction period is 10 days ahead of schedule, and the project is completed and accepted.

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Abstract

The invention relates to a non-excavation tube pulling construction method which comprises the following steps: (1) preparation work: understanding stratum and underground condition, calculating the number of chambering and the size of a return compandor, and formulating the control data of a pipeline midline and elevation and correction measures; (2) measuring plane surface, controlling payingoff, and measuring the elevation of each pile; (3) setting an active well, and receiving and setting a drilling machine; (4) preparing drilling fluid; (5) drilling pilot holes,; (6) adopting the compandor to chambering, cleaning the hole at the same time, and protecting walls with slurry; (7) welding the pipeline; (8) pulling the tube, and simultaneously pulling a steel tube with the same length as that of the tube; (9) casting slip and fixing; (10) mounting tubes; (11) testing pressure and flushing. The invention can effectively increases economical benefit and social benefit, and has the advantages of environmental protection and energy saving.

Description

Technical field [0001] The invention discloses a pipe drawing construction method in the technical field of pipeline laying, in particular a non-excavation pipe drawing construction method. Background technique [0002] With the continuous improvement of people's living standards, the pace of urban renewal and transformation of the municipal pipeline network has accelerated. The conventional method of laying underground pipelines uses the open-cut method. However, due to the geographical and environmental impacts, as well as the obstruction of underground buildings, traffic congestion, and the vertical and complex layout of underground pipelines, the open-cut method of laying pipes can no longer meet the requirements of construction conditions, and sometimes even cannot be constructed. Summary of the invention [0003] In order to overcome the above-mentioned shortcomings in the prior art, the present invention provides a method that is not affected by obstacles such as undergro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16L1/028
Inventor 马晓波展宏宇季政周宇
Owner 江苏广宇建设集团有限公司
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