Small-section channel lining construction method

A construction method and small-section technology, applied in water conservancy projects, artificial waterways, buildings, etc., can solve problems such as channel seepage, achieve the effect of preventing water seepage, good anti-seepage effect, and ensuring construction quality

Inactive Publication Date: 2019-11-22
CHINA HYDROPOWER ELEVENTH ENG BUREAU ZHENGZHOU CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0015] The above prior art discloses a construction method for municipal roads crossing pond

Method used

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  • Small-section channel lining construction method

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Experimental program
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Effect test

Embodiment 1

[0045] A small-section channel lining construction method, comprising:

[0046] Step 1, measure and stake out, measure and stake out at the plane position of the excavated channel, use a total station or theodolite to define the central positioning pile and the bottom slope junction pile, drive the center pile along the direction of the excavated channel and at a predetermined interval distance Numbering, use a level to measure the height of the pile point, and then determine the sideline of the excavated channel according to the center line, and mark it with a marking machine;

[0047] Step 2, channel filling, the channel filling uses the nearby land to arrange and excavate the earthwork, and lay and fill according to the horizontal layer;

[0048] Step 3: Excavation of the channel, using backhoe equipment for one-time excavation and forming, using rolling rollers to roll the bottom and sides of the channel, after the rolling is completed, spray one-component polyurethane wat...

Embodiment 2

[0062] Such as figure 1 As shown, step 3 also includes the step of digging and setting up channel corner protection spaces, and the channel corner protection spaces are set on both sides of the excavated channel section.

[0063] Step 4 or step 5 also includes the step of using concrete to pour the corner space of the channel.

[0064] During the daily maintenance of the channel, due to the surface deformation or the quality of the channel lining, the channel lining concrete often cracks. In order to solve the above technical problems, in the area where channel deformation is likely to occur, pouring in the channel corner protection space is adopted. Concrete is used as a clamping concrete lining structure. When lining the channel, the channel and the concrete poured in the corner space of the channel are integrated into one. As an improvement of this embodiment, the concrete poured in the channel corner space is replaced with reinforced concrete. As another improvement of th...

Embodiment 3

[0066] Step 4 also includes the step of pouring a cement slurry layer on the sand and pebble cushion. The poured cement slurry is conducive to the formation of a stable whole of the sand and pebble cushion to support the lining concrete. This embodiment only limits the step of pouring the cement slurry layer on the sand and pebble cushion layer. Except for the above definition, this embodiment is the same as that in Embodiment 1.

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Abstract

The invention discloses a small-section channel lining construction method. The method includes the steps that firstly, measurement lofting is conducted, wherein measurement lofting is conducted according to an excavated channel plane position provided by a design drawing; secondly, channel filling is conducted, wherein nearby matts are used for tidying and excavating an earthwork during channel filling, and laying and filling are conducted according to a horizontal layer; thirdly, channel excavation is conducted, wherein a back shovel device is used for one-time excavation forming; fourthly,a cushion layer is constructed, wherein a 5 cm sandy gravel cushion layer is stacked at the bottom of an excavated channel, and laying work of the sandy gravel cushion layer is then conducted; fifthly, channel lining is conducted, wherein an integral forming machine lining and manual lining manner is adopted for concrete pouring; and sixthly, surface finishing curing is conducted, wherein after the lining of the excavated channel is completed, manual calendering and surface finishing are conducted on the surface of the channel, and after concrete pouring is conducted for 18 h to 24 h, curing is conducted. By means of the construction method, due to the step of cushion layer construction and the step of channel lining construction, leakage of the channel is effectively prevented.

Description

technical field [0001] The invention relates to the technical field of canal construction, in particular to a small-section canal lining construction method. Background technique [0002] At present, there are mainly two methods for channel concrete lining construction: manual lining and lining machine construction. Artificial lining includes foundation surface treatment, installation of formwork, concrete construction and form removal process, which requires warehouse adjustment. Manual lining requires more manpower and consumes A large number of templates are used, and waste is generated during the construction of the last warehouse on the shift, so the construction quality is difficult to guarantee. [0003] The lining machine adopts sliding form technology, and multiple processes of formwork installation, manual leveling, vibration and surface closing are completed through this equipment at one time, and continuous construction is realized at the same time. Considering ...

Claims

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Application Information

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IPC IPC(8): E02B5/02
CPCE02B5/02
Inventor 王宏伟朱飞马龙闻艳萍刘子洋
Owner CHINA HYDROPOWER ELEVENTH ENG BUREAU ZHENGZHOU CO LTD
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