River bottom microbial grouting ecological anti-seepage system and construction method thereof

A construction method and microbial technology, applied in the fields of botanical equipment and methods, water conservancy engineering, marine engineering, etc., can solve the problems of no material exchange and insufficient ecology, and achieve convenient construction, good ecology, and ensure project quality. Effect

Inactive Publication Date: 2019-08-09
CHONGQING JIAOTONG UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

And compared with flexible anti-seepage such as anti-seepage membrane and anti-seepage blanket and rigid anti-seepage such as concrete lining and masonry lining, although there is a small amount of water exchange, there is no material exchange, and the ecology is not good enough.

Method used

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  • River bottom microbial grouting ecological anti-seepage system and construction method thereof
  • River bottom microbial grouting ecological anti-seepage system and construction method thereof

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Embodiment 1

[0030] see figure 1 , this embodiment discloses an ecological anti-seepage system for microbial grouting at the bottom of the river, including a base layer 1 at the bottom of the river, a compacted clay layer 2 and an ecological layer 3 laid layer by layer at the bottom of the river.

[0031] The base layer 1 at the bottom of the river course is undisturbed river bottom soil compacted by rolling. The base layer 1 at the bottom of the channel is the bottom base layer of the system. In actual engineering, trenches are formed by excavating and cleaning down along the shape of the bottom of the river channel. Backfill 20cm of undisturbed soil in the trench and perform compaction treatment to form the base layer 1 at the bottom of the channel.

[0032] The compacted clay layer 2 is clay compacted by rolling, and is an anti-seepage layer at the bottom of the river. The compacted clay layer 2 is made of clay with a plasticity index > 20 and a clay content of 35% to 50%. The thick...

Embodiment 2

[0038] This embodiment discloses a construction method for the ecological anti-seepage system of river bottom microbial grouting described in Embodiment 1, comprising the following steps:

[0039] 1) Remove the surface humus, silt and soft soil layer at the bottom of the channel, excavate downward to form a trench, and backfill the trench with 20cm of undisturbed soil, and compact the undisturbed soil to form the base layer 1 at the bottom of the channel.

[0040] 2) Bedding and rolling the clay until the degree of compaction meets the requirements, forming a compacted clay layer 2 .

[0041] 3) An ecological layer 3 is laid on the top of the compacted clay layer 2 .

[0042] 4) Use the fork planting method to grow aquatic plants. Make tool with a bamboo pole or wooden pole with a fork, the stem portion of plant is forked into ecological layer 3 to introduce cartilaginous grass or foxtail algae plants, to provide good ecology.

[0043] 5) Arrange grouting holes 4 .

[0044]...

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Abstract

The invention provides a river bottom microbial grouting ecological anti-seepage system and a construction method thereof. The anti-seepage system comprises compacted clay layers and ecological layerswhich are laid at the bottom of a riverway layer by layer; the ecological layers are loam layers, a plurality of grouting holes are formed in the upper surfaces of the ecological layers, and the holebottoms of the grouting holes extend to the bottoms of the compacted clay layers; and during working, the grouting holes are grouted with microbial mixed liquid. The construction method of the anti-seepage system comprises the steps of laying-covering of compacted clay, laying of the ecological layers, arrangement of the grouting holes, grouting of the microbial mixed liquid and the like. According to the anti-seepage system, by controlling the factors such as the hole spacing of the grouting holes and the grouting pressure, anti-seepage treatment in various conditions can be achieved, construction is convenient, and good ecological performance is achieved.

Description

technical field [0001] The invention relates to the technical fields of water conservancy engineering and river course improvement engineering, in particular to a river bottom ecological anti-seepage technology. Background technique [0002] With the continuous improvement of our country's social economy and the increasing living standards of the people, all walks of life are paying more and more attention to ecological issues. The urban river management project of China is the most intuitive reflection of the environmental problems of river management. The main manifestations are that the anti-seepage works at the bottom of the river are not perfect. The anti-seepage materials used in some anti-seepage projects at the bottom of the river are not ecologically sound, and the anti-seepage effect is difficult to guarantee. Some anti-seepage projects at the bottom of the river have certain limitations during construction. It is not suitable for weak foundation soil, etc. At pr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02B3/02E02B3/16A01G22/00
CPCA01G22/00E02B3/02E02B3/16
Inventor 邱珍锋樊俊廷杨少博王俊杰
Owner CHONGQING JIAOTONG UNIVERSITY
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