Method for making GCL (geosynthetic clay liner) vertical cut-off wall

An anti-seepage wall, L-shaped technology, applied in construction, infrastructure engineering, etc., can solve the problems of difficult construction and high cost, anti-seepage effect that cannot meet high environmental protection requirements, and high raw material consumption.

Active Publication Date: 2016-12-07
TIANJIN ZHONGLIANGELIN SCI & TECH DEV CO LTD
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, both the rigid cut-off wall and the plastic cut-off wall have the disadvantages of high elastic modulus, large consumption of raw materials, high construction difficulty and cost, and long construction period. Although the flexible cut-off wall solves these problems, its anti-seepage effect cannot be achieved. Higher environmental protection requirements (less than 1×10 -7 cm / s)

Method used

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  • Method for making GCL (geosynthetic clay liner) vertical cut-off wall

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preparation example Construction

[0023] A kind of preparation method of GCL vertical anti-seepage wall, is characterized in that, comprises the steps:

[0024] Excavate the trench; roll the GCL with a round pipe with the required counterweight and fix one end of the GCL on the top of the trench, insert it vertically downward along the dug trench wall, and the length of the GCL is greater than the The depth of the trench; then slowly open from top to bottom and lay along the wall to the bottom of the trench and fix the GCL against the wall, then take out the round pipe and pour grout into the trench The material is solidified into a wall to form the GCL vertical anti-seepage wall.

[0025] The above schemes can already complete the preparation of the vertical cut-off wall of GCL, and the preferred scheme is given below,

[0026] Preferably, the said GCL is slowly opened from top to bottom and laid along the wall to the bottom of the groove, and the GCL is fixed to the wall by using an L-shaped push piece to a...

Embodiment 1

[0036] A kind of GCL vertical anti-seepage wall construction technology, comprises the following steps:

[0037] Excavation trench: Excavate a trench with a width of 50cm around the garbage dump, and the trench penetrates 60cm into the impermeable layer vertically. The purpose is to form an overall anti-seepage system and prevent leachate from seepage from the lower end of the anti-seepage wall;

[0038] The laying of GCL is to insert the GCL vertically downward along the excavated trench wall. In order to ensure that the GCL is inserted into the bottom of the trench, the GCL cut 1.5 meters longer than the depth of the trench is rolled into a roll with a counterweight steel pipe and anchored at the top first. 1.8 meters, and then slowly open and lay along the wall from top to bottom; in order to ensure that the GCL is laid flat and smoothly opened downward, the L-shaped steel pipe is used to slowly open the GCL roll downward along the groove wall, and after it is completely ins...

Embodiment 2

[0046] The difference from Example 1 is that the GCL used in this example is granular GCL, and its gram weight needs to be ≥ 4500g / m 2 .

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Abstract

The invention discloses a method for making a GCL (geosynthetic clay liner) vertical cut-off wall, and belongs to the field of seepage prevention. The method comprises the following steps of digging a groove; rolling up GCL with a round tube with the needed balance weight, fixing one end of the GCL to the top of the groove, and downwards inserting the GCL vertically along the wall of the dug groove, wherein the length of the GCL is larger than the depth of the groove; slowly unrolling to lay the GCL to the bottom of the groove along the wall from top to bottom, and fixing the GCL to the wall in an attached manner, then, taking out the round tube, and pouring slurry to the groove to carry out solidification so as to form the GCL vertical cut-off wall. The method for making a GCL vertical cut-off wall has the advantages that the effect of seepage prevention is good, and construction is easy.

Description

technical field [0001] The invention relates to the anti-seepage field, in particular to a GCL vertical anti-seepage wall and a preparation method thereof. Background technique [0002] With the development of industrialization, especially the development of projects such as water conservancy and hydropower, chemical plants, oil depots and garbage dumps, hidden dangers of leakage have been caused, seriously affecting people's safety and living environment. In particular, there are more and more studies on anti-seepage of garbage dumps, and anti-seepage has become a hot topic. The previous research was mainly on horizontal anti-seepage. However, vertical anti-seepage is also an important aspect of anti-seepage. [0003] Vertical anti-seepage cannot copy the horizontal anti-seepage technology, because vertical anti-seepage involves the influence of the gravity of raw materials, such as how to lay waterproof blankets against the wall, only need to be paved in the horizontal dir...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D19/18
CPCE02D19/18
Inventor 谢世平何顺辉张健
Owner TIANJIN ZHONGLIANGELIN SCI & TECH DEV CO LTD
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