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Geological pipe jacking construction technology of argillaceous sandstone

A kind of argillaceous sandstone and construction technology technology, which is applied in pipeline laying and maintenance, pipes/pipe joints/fittings, mechanical equipment, etc., and can solve problems such as unsatisfactory drag reduction effect of thixotropic mud

Active Publication Date: 2021-11-02
国网浙江省电力有限公司宁波市镇海区供电公司 +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The technical problem to be solved by the present invention is to provide an argillaceous sandstone geological pipe jacking construction technology to solve the problem of unsatisfactory drag reduction effect of thixotropic mud in sandy soil

Method used

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  • Geological pipe jacking construction technology of argillaceous sandstone
  • Geological pipe jacking construction technology of argillaceous sandstone

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Embodiment Construction

[0025] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. The following description of at least one exemplary embodiment is merely illustrative in nature and in no way taken as limiting the invention, its application or uses. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0026] Under the geological and hydrological conditions of argillaceous sandstone and poor water, the invention can ensure the smooth construction of the project and effectively protect the safety of surrounding structures.

[0027] refer to Figure 1 to Figure 2 As shown, the geological pipe jackin...

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Abstract

The invention discloses a geological pipe jacking construction technology of argillaceous sandstone. A thixotropic mud system is used to inject thixotropic mud in the circumferential direction of a concrete pipe. At the same time, mud sleeves are arranged at intervals on the intermediate pipe joints. The mud sleeves are distributed with grouting holes along the circumference. The thixotropic mud system includes a grouting pump and a grouting pipeline. When mixing the grouting materials, mix them with water. Make the required grout, and use it after standing for 24 hours after making the grout, and then use the grouting pump to grout. The grouting pipeline includes a main pipe and several branch pipes connected with the main pipe, and the branch pipes transport the grout sent from the main pipe to each grouting hole. In addition to using the tool head mud sleeve to press into the mud, the present invention adds a mud sleeve to the middle pipe section to promote the formation of the mud support ring around the pipe.

Description

technical field [0001] The invention belongs to the technical field of electric power construction, and in particular relates to the construction technology of electric cable tunnels. Background technique [0002] In the development of large cities abroad, it has become a world trend to replace traditional overhead lines with underground cables. With the rapid development of urbanization in our country, the space left for overhead lines in the upper part of the city is getting smaller and smaller. Overhead lines have been increasingly unable to keep up with social needs in terms of application space and transmission capacity. Therefore, from the perspective of actual transmission power and aesthetics, it has become necessary to use underground cables to replace overhead lines. From a functional point of view, the use of cable lines can avoid the restriction of overhead lines on the growth height of green trees, and does not occupy urban ground space. [0003] Although the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16L1/036
CPCF16L1/036
Inventor 刘可龙卢志明钟晓幸严迪波郑安明王德洪姜龙何春光张晓峰贝斌斌
Owner 国网浙江省电力有限公司宁波市镇海区供电公司
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