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Underground karst cave filling treatment method

A treatment method and technology of karst caves, applied in soil protection, infrastructure restoration, construction, etc., can solve the problems of high cost, long construction period, and inability to ensure that karst caves are fully filled, and achieve the goals of protecting the environment, saving investment, and shortening the construction period Effect

Active Publication Date: 2015-01-14
ZHEJIANG GUOTAI CONSTR GROUP
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  • Summary
  • Abstract
  • Description
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AI Technical Summary

Problems solved by technology

At present, excavation and replacement can be used for the construction technology of shallower burial depths. For deeper underground karst caves, cement slurry or concrete is generally used. fully filled

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0016] Embodiment: the filling processing method of this underground karst cave, its step comprises:

[0017] 1) Geological survey: The site is now an open space, the surface is filled with plain soil, and the survey shows that there are no obvious obstacles. According to the survey data and the survey of the surrounding geological environment of the site, the main unfavorable geological phenomena in the site are karst caves and the ground subsidence caused by them. The saturated silt and silt distributed within 20m underground of the site belong to modern and modern sedimentary layers with relatively Undesirable effects of strong vibration liquefaction. There are 13 karst caves in the geological survey site. The depth of the karst caves is about 42-53m, the height of the karst caves is 0.3-7m, and the width of the karst caves is about 7-18m. In some places, there are multi-layered karst caves.

[0018] 2) Hole collapse protection: Since there are saturated sand and silt soil...

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PUM

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Abstract

The invention relates to an underground karst cave filling treatment method. The method includes the steps of geological exploration, hole collapse protection, drilling, drill hole washing, bubble composite soil preparation and grouting operation. According to the method, the defect of diseconomy caused by heavy excavation construction or the operation that cement paste or concrete is poured into karst caves is overcome, it is guaranteed that the karst caves are fully filled with the cement paste or the concrete, construction is convenient, the construction period is shortened, and investment can be saved.

Description

technical field [0001] The invention relates to an underground karst cave treatment method, in particular to an underground karst cave filling treatment method. Background technique [0002] In civil engineering, it is often encountered that there are underground karst caves in some construction sites. In some projects, the underground karst caves are distributed in a wide range and have different depths. The long-term existence of these karst caves will seriously affect the quality and service life of the project, and must be dealt with. At present, excavation and replacement can be used for the construction technology of shallower burial depths. For deeper underground karst caves, cement slurry or concrete is generally used. Fully filled. Due to the characteristics of good fluidity, self-hardening and no need for vibration during construction, the air-bubble mixed soil can be used as an excellent material for filling underground caves. Contents of the invention [0003...

Claims

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Application Information

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IPC IPC(8): E02D3/12
CPCE02D3/12E02D37/00E02D2250/0076E02D2300/0018
Inventor 江志峰洪昌华李树枝陈江滨
Owner ZHEJIANG GUOTAI CONSTR GROUP
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