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Foundation integrated processing construction method of cover type karst area

A technology of comprehensive treatment and construction methods, applied in basic structure engineering, construction, soil protection and other directions, can solve problems such as new breakthroughs in ground treatment technology in areas that cannot be karst, and achieve the effect of saving construction funds and speeding up the progress of the project

Active Publication Date: 2010-10-20
CHINA 22MCC GROUP CORP +1
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Problems solved by technology

But so far there is no enterprise or project that can effectively combine survey, design, construction, and geological experts to conduct research together, and has not been able to make new breakthroughs in foundation treatment technology in karst areas. There is no relevant construction technology to learn from the construction experience of replacement and comprehensive treatment

Method used

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Embodiment Construction

[0012] The invention is described in detail below in conjunction with specific embodiments:

[0013] 1. Excavation of excavation construction

[0014] The terrain of the site described in this embodiment is relatively flat, the landform type is single, the stratum structure is relatively complex, the environmental engineering geological conditions are relatively simple, easy to remediate, and it is a site with poor stability. The soil quality is not very uniform, the foundation is relatively stable, the impact of groundwater on the project is small, the bedrock that has a greater impact on the construction of the project has a large undulation, and the drainage conditions are acceptable, which is more suitable for the construction of buildings. Natural grading may cause collapse of adjacent walls or roads. Therefore, soil nailing wall slope protection must be done around the foundation pit of some buildings, and the slope coefficient of all foundation pits is 1:0.3. Since th...

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Abstract

The invention relates to a foundation processing method, in particular to a foundation integrated processing construction method of a cover type karst area. The method comprises the following steps of: evacuating earth moving machinery when a foundation pit is excavated until a limestone formation is exposed in a large area; basically exposing rocks of the bottom of the foundation pit after excavating, wherein rock buds are exposed from a foundation base, and the storage quantity of damic earth among the rock buds does not influence the next procedure construction; adopting weakened loose blasting operation, aiming at solution cracks, intermountain gulches and locally crushing bedrocks, and mechanically crushing and clearing; adopting a complex geophysical prospecting technological means that a high-density resistivity method is combined with a geological radar, arranging a high-density electrical geophysical prospecting wire in a construction site according to an arrangement rule, meanwhile, arranging a detailed exploratory hole in a building planning position, and mechanically picking the solution cracks, the intermountain gulches and the locally crushing bedrocks; adopting sleeve valve cement flour and coal ash slurry injecting constriction and cement flour and coal ash slurry filling constriction by a solution cavity slurry-injection method; and filling and casting concrete. The invention can quicken a work progress and can save construction cost compared with other foundation processing modes.

Description

technical field [0001] The invention relates to a foundation treatment method, in particular to a foundation comprehensive treatment construction method in covered karst areas. Background technique [0002] At present, many domestic construction companies have done corresponding research on foundation treatment, and have also obtained certain successful experiences. But so far there is no enterprise or project that can effectively combine survey, design, construction, and geological experts to conduct research together, and has not been able to make new breakthroughs in foundation treatment technology in karst areas. There is no relevant construction technology to learn from the construction experience of replacement and comprehensive treatment. Contents of the invention [0003] The invention aims to solve how to ensure the quality of the foundation project and the progress of the project under the premise of controlling the construction investment, and provides a constr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D3/12E02D3/10
Inventor 彭华
Owner CHINA 22MCC GROUP CORP
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