Method of constructing underground diaphragm wall by cement deep mixing

A construction method and cement technology, applied in water conservancy projects, artificial islands, underwater structures, etc., can solve the problems of lack of integrity, poor continuity of the diaphragm wall, poor permeability resistance, etc. Compact structure, good quality effect

CN103741713AInactive Publication Date: 2014-04-23成张佳宁
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
Publication Date
2014-04-23
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a method of constructing an underground diaphragm wall by cement deep mixing. The method includes: clearing a site and preparing materials; setting out and performing high jointing; mounting and regulating; trenching and laying plates; moving a machine and positioning; grouting, advancing and mixing; performing rotation mixing and lifting; forming a wall and removing the machine. The method has the advantages that the method is advanced; the wall has good continuity, integrity and impermeability; cement mixing volume in the depth direction meets the design requirements, mixing is even with compactness, and the wall is high in quality; the wall formed has high depth and small wall thickness; the use of split independent drive requires low energy consumption; stability is good and vertical accuracy is high; inner and outer drill pipes are good in concentricity and tightness; the structure is compact and fast and convenient to remove; strength is high and bearing capacity is high; work efficiency is high and manufacturing cost is low; the quality is good and environmental influence is low.
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Description

technical field

[0001] The invention relates to a construction method for deep mixing cement land connecting walls, belonging to the technical field of building construction. Background technique

[0002] In recent years, my country's urbanization has developed rapidly, and high-rise buildings in various cities have sprung up like mushrooms. In the construction of the soil layer containing or mixed with egg (crushed) stones with a particle size not greater than 10cm, there are still problems such as poor continuity, insufficient integrity and poor anti-permeability of the constructed diaphragm wall. Contents of the invention

[0003] The purpose of the present invention is to solve the problems existing in the construction of the land continuous wall in the current building construction, and provide a construction method of the deep mixing cement land continuous wall to solve the above-mentioned problems.

[0004] In order to achieve the above object, the technical scheme ...

Examples

Embodiment Construction

[0022] See attached figure 1 ,

[0023] 1. Clear the site, prepare materials, level and compact the construction site, remove ground and underground obstacles, and the working surface should not be less than 7m. When the ground surface is too soft, measures should be taken to prevent mechanical instability. Prepare enough cement and admixtures.

[0024] 2. Surveying and setting out The axis of the wall construction shall be determined according to the design requirements, and an elevation control pile shall be arranged every 50m, and a clear mark shall be made.

[0025] 3. Installation and commissioning to support the mobile machine and the main engine in place; erect pile frames; install pulping, grouting and gas-making equipment; connect water, electric and gas circuits; run and test run.

[0026] 4. Ditching and decking The excavation cross-section is a storage ditch with a depth of 1m and a width of 1.2m to solve the residual slurry storage and slurry return supply durin...