Construction method for rapidly conducting impervious curtain grouting in karst pipeline leakage area

A technology of anti-seepage curtain and construction method, which is applied in the direction of infrastructure engineering, construction, etc., which can solve the problems of poor construction quality and progress, large engineering volume, and high cost, and achieve the effects of small engineering volume, less consumable materials, and short working hours

Active Publication Date: 2014-06-18
CHINA POWER CONSRTUCTION GRP GUIYANG SURVEY & DESIGN INST CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a construction method for rapid anti-seepage curtain grouting in the karst pipeline leakage area, so as to solve the pr

Method used

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  • Construction method for rapidly conducting impervious curtain grouting in karst pipeline leakage area
  • Construction method for rapidly conducting impervious curtain grouting in karst pipeline leakage area
  • Construction method for rapidly conducting impervious curtain grouting in karst pipeline leakage area

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Experimental program
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Effect test

Embodiment 1

[0027] Firstly, drill conventional grouting hole A1, grouting hole A2 and grouting hole A3, the diameter of which is 75mm. According to the phenomenon, it can be preliminarily inferred that this area is a section where karst pipelines are developed; then, according to the original design hole spacing, the intensified hole a1 and the intensified hole a2 are arranged, and the hole diameter is 75mm. Hole B (b1, b2, b3, and b4) and a row of detection holes C (c1, c2, c3, and c4), the same aperture diameter is 75mm and the detection hole B and detection hole C are both oblique holes of 5°, arranged in the same direction In order to tilt outward based on the vertical direction, the main function is to detect the distribution range of the upstream and downstream directions of the karst pipeline and the grouting axis, and then determine the grouting implementation method according to the implementation effect of the detection hole; if the karst pipeline around the grouting hole is dist...

Embodiment 2

[0029] Firstly, drill conventional grouting hole A1, grouting hole A2 and grouting hole A3, the diameter of which is 75mm. According to the phenomenon, it can be preliminarily inferred that this area is a section where karst pipelines are developed; then, according to the original design hole spacing, the intensified hole a1 and the intensified hole a2 are arranged, and the hole diameter is 75mm. Detection holes B (b1, b2, b3, and b4) and a row of detection holes C (c1, c2, c3, and c4), with the same aperture diameter of 75mm and 7° oblique holes for detection holes B and C, are arranged to face They are all inclined outwards based on the vertical direction. The main function is to detect the distribution range of the upstream and downstream directions of the karst pipeline and the grouting axis, and then determine the grouting implementation method according to the implementation effect of the detection hole; In the coverage area of ​​detection hole B and detection hole C, it...

Embodiment 3

[0031] Firstly, drill conventional grouting hole A1, grouting hole A2 and grouting hole A3, the diameter of which is 75mm. According to the phenomenon, it can be preliminarily inferred that this area is a section where karst pipelines are developed; then, according to the original design hole spacing, the intensified hole a1 and the intensified hole a2 are arranged, and the hole diameter is 75mm. Detection holes B (b1, b2, b3, and b4) and a row of detection holes C (c1, c2, c3, and c4), with the same aperture diameter of 75mm and 10° oblique holes for detection holes B and C, are arranged to face They are all inclined outwards based on the vertical direction. The main function is to detect the distribution range of the upstream and downstream directions of the karst pipeline and the grouting axis, and then determine the grouting implementation method according to the implementation effect of the detection hole; In the coverage area of ​​detection hole B and detection hole C, i...

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Abstract

The invention discloses a construction method for rapidly conducting impervious curtain grouting in a karst pipeline leakage area. The method comprises the following steps of arranging conventional grouting holes, arranging encrypting holes, arranging detection holes, expanding holes, pouring aggregate and conducting grouting. According to the method, the type of the grouting area is judged firstly according to the conventional grouting holes, then the encrypting holes and the detection holes are respectively formed, so that the upstream direction and the downstream direction of a karst pipeline and the distribution range on the grouting axis are judged, and due to the fact that the aperture of the grouting holes is adjusted, backfilling is carried out on the dry aggregate , and in the pouring process, cement mortar is intermittently poured so that the effect of forming a curtain grouting curtain body can be achieved. Compared with a traditional curtain grouting method, the method has the advantages of being few in consumable material, small in work amount and short in work hour, the construction quality and the construction progress can be greatly improved, and the engineering investment can be effectively controlled.

Description

technical field [0001] The invention relates to the technical field of water conservancy and hydropower engineering, in particular to a construction method for rapid anti-seepage curtain grouting in the seepage area of ​​karst pipelines. Background technique [0002] In water conservancy and hydropower projects, in order to reduce the seepage of building foundations, reduce seepage pressure, and ensure the stability of foundation seepage, curtain grouting is usually required. Most of the areas rich in water resources are located in areas where limestone karst is developed. In order to successfully utilize and develop water resources, the primary condition is to solve the anti-seepage curtain grouting well. The essence of curtain grouting in karst areas is to use grout to fill various joint fissures, pores, cavities and karst caves to form a continuous water-blocking curtain, thereby achieving consolidation, bonding, anti-seepage, improving bearing strength and deformation re...

Claims

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Application Information

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IPC IPC(8): E02D19/18
Inventor 张庆谢豪周先练
Owner CHINA POWER CONSRTUCTION GRP GUIYANG SURVEY & DESIGN INST CO LTD
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