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A grouting structure and construction method filled with soluble crystals

A construction method and grouting technology, which can be used in basic structure engineering, excavation, soil protection, etc., and can solve problems such as difficulty in controlling grouting pressure, failure of negative pressure drainage, etc.

Active Publication Date: 2021-05-04
CHINA RAILWAY ERYUAN ENG GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to overcome the above-mentioned shortcomings that the existing negative pressure drainage technology is difficult to control the grouting pressure, and then easily lead to the failure of negative pressure drainage, and to provide a grouting structure and construction method filled with soluble crystals

Method used

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  • A grouting structure and construction method filled with soluble crystals
  • A grouting structure and construction method filled with soluble crystals

Examples

Experimental program
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Effect test

Embodiment 1

[0037] Such as figure 1 As shown, a grouting structure filled with soluble crystals according to the present invention includes a water-permeable section 21 and a grouting section 22, and a water-stop member 23 is arranged between the water-permeable section 21 and the grouting section 22, and the water-permeable The section 21 is provided with a permeable pipe 1 filled with solid soluble crystals 3, and the permeable section 21 is provided with a water inlet of a drainage pipe 4, and the elevation of the water inlet of the drainage pipe 4 is higher than The elevation of the water outlet of the drain pipe 4, the head of the drain pipe 4 is less than the height of the water column corresponding to the local atmospheric pressure.

[0038] Specifically, the diameter of the borehole should be greater than 90 mm. The permeable pipe 1 can be a perforated corrugated pipe with outer woven filter cloth and inner support HDPE, which can prevent large particles such as coarse sand and gr...

Embodiment 2

[0041] A construction method of a grouting structure filled with soluble crystals according to the present invention adopts a grouting structure filled with soluble crystals as described in Example 1, comprising the following steps:

[0042] a. According to the geological survey, drill a downwardly inclined borehole, and make the permeable section 21 of the borehole be located below the groundwater level 5 controlled by the slope; The position of section 21, the height difference between the bottom of the borehole and the opening of the borehole is less than the height of the water column corresponding to the local atmospheric pressure, so as to ensure that the lift of the drain pipe 4 meets the requirements;

[0043] b. Set the permeable pipe 1 in the permeable section 21, and then insert the drain pipe 4 in the permeable pipe 1, so that the port of the drain pipe 4 goes deep into the bottom of the permeable pipe 1;

[0044] c. Fill the water-permeable pipe 1 with solid solub...

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Abstract

The invention discloses a grouting structure filled with soluble crystals and a construction method. The structure includes a water-permeable section and a grouting section, a water-stop member is arranged between the water-permeable section and the grouting section, and a water-permeable section is arranged in the water-permeable section. The water-permeable pipe is filled with solid soluble crystals, and the water-permeable section is provided with a water inlet of the drainage pipe, and the elevation of the water inlet of the drainage pipe is higher than the elevation of the water outlet of the drainage pipe. This structure is beneficial to increase the grouting pressure, reduce the cracks in the grouting section, improve the sealing effect, and then improve the negative pressure effect of the permeable section, and can effectively support the water-stop component during grouting, preventing the slurry from entering the permeable section and interfering The formation of a negative pressure environment avoids the blockage of the permeable pipe and prevents the large displacement of the water-stop component due to extrusion, which is conducive to ensuring the continuous drainage effect of the deep layer of the slope, and is of great significance to solving the drainage management problem of large landslides.

Description

technical field [0001] The invention relates to the technical field of slope drainage engineering, in particular to a grouting structure filled with soluble crystals and a construction method. Background technique [0002] Rainfall infiltration is one of the important factors that change the mechanical parameters of slopes and induce landslides. Timely and effective drainage of slopes is an effective way to solve this problem. The existing slope drainage measures mainly include: surface drainage ditch and blind drainage ditch, water collection well pumping, horizontal drainage holes, underground drainage holes, negative pressure drainage technology, etc. [0003] The existing slope negative pressure drainage technology mainly divides the slope drilling into a permeable drilling section and a grouting sealing drilling section, and a water-expandable rubber water-stop ring is arranged between the two, as described in Chinese Patent Publication No. CN107246019A A self-starting...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E02D15/00
CPCE02D15/00E02D17/20E02D5/80E02D3/10E02D15/04E02D19/10
Inventor 范雲鹤郑长青喻渝赵万强孙红月胖涛曹彧谭永杰刘金松刘洋尚岳全帅飞翔琚国全蒋立
Owner CHINA RAILWAY ERYUAN ENG GRP CO LTD
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