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Pebble stratum waterproof curtain construction method

A water-stop curtain and construction method technology, applied in the direction of infrastructure engineering, construction, etc., can solve the problems of not being able to give full play to the maximum advantages of equipment, slow construction progress, and large equipment consumption, so as to improve construction efficiency, construction quality, and groove formation speed Fast, less mechanical wear effect

Pending Publication Date: 2021-07-27
南京东大岩土工程勘察设计研究院有限公司
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Problems solved by technology

[0005] To sum up, the construction of cement-soil diaphragm wall is often caused by the continuous construction of a single equipment, resulting in large equipment consumption, high cost or no construction at all.
In the face of complex geological construction conditions, the maximum advantage of the equipment cannot be brought into play, resulting in the problem of slow construction progress

Method used

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  • Pebble stratum waterproof curtain construction method

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Embodiment Construction

[0021] The technical solution of the present invention will be explained more clearly and completely through the description of preferred embodiments of the present invention in conjunction with the accompanying drawings.

[0022] Such as figure 1 As shown, a kind of pebble formation waterproof curtain construction method of the preferred embodiment of the present invention comprises the following steps:

[0023] S1: Ascertain the geological conditions, investigate the soil characteristics within the depth range, and determine whether there is a thicker gravel and pebble layer; if there is a thicker gravel and pebble layer, go to step S2 and use a grab-type groove forming machine In trenching construction, if there is no thick gravel and pebble layer, and the main soil layer is soft soil, silt, or sandy soil, proceed to step S4.

[0024] S2: Groove construction by grab-type grooving machine, the grooving speed is controlled during the grooving process, the grooving depth is n...

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Abstract

The invention provides a pebble stratum waterproof curtain construction method. The method comprises the following steps of S1, ascertaining geological conditions, investigating soil characteristics in a depth range, and determining whether a gravel pebble layer with relatively large thickness exists or not; S2, performing grooving through a grab bucket type grooving machine; S3, back-filling the groove with plain soil; and S4, performing stirring by a three-shaft stirring pile machine, and performing grouting to form a wall. According to the method, construction is conducted by multiple equipment together, respective advantages of the equipment are fully utilized, machine abrasion is reduced, construction difficulty is lowered, the construction period is effectively shortened, construction efficiency and construction quality are improved, and cost is saved.

Description

technical field [0001] The invention relates to the technical field of foundation construction, in particular to a construction method for a water-tight curtain in pebble formations. Background technique [0002] At present, the construction of the water-stop curtain, that is, the cement-soil continuous wall, generally uses a three-axis mixing pile driver or TRD equipment to operate independently according to specific geological conditions. Among them, the construction of the three-axis mixing pile machine is to use the mixing pile machine to spray cement and other reinforcement materials into the soil and mix them fully. A series of physical and chemical reactions between the cement and the soil will cause the soil to harden and improve the strength of the foundation, resulting in a water-stop effect. , so as to form a water-stop curtain and control the permeability of the water below. However, when the three-axis mixing pile machine encounters a stratum with high local st...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D19/18
CPCE02D19/18
Inventor 余巍黄浩
Owner 南京东大岩土工程勘察设计研究院有限公司
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