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Stiffened variable cross section high-pressure jet grouting pile antiskid wall construction method

A technology of high-pressure rotary grouting piles and construction methods, which can be applied to sheet pile walls, excavation, and foundation structure engineering, etc., can solve problems such as poor anti-sliding effect of sliding zone soil, affecting anchoring strength of anchor cables, loss of prestress of anchor cables, etc. Achieve stable anti-slip effect, good anti-slip effect, and improve anti-slip ability

Active Publication Date: 2020-09-11
广东省工程勘察院
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Problems solved by technology

[0005] Although the pull-out force of the anchor cable and the frictional resistance between the sliding rock layers are used to prevent the rock mass from sliding down, the slight movement of the slope during the construction of this scheme will affect the anchoring strength of the anchor cable, and because the anchor cable has prestress Insufficient in loss, permanent anti-corrosion and other aspects, the effect is poor in the anti-slip of sliding zone soil

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  • Stiffened variable cross section high-pressure jet grouting pile antiskid wall construction method
  • Stiffened variable cross section high-pressure jet grouting pile antiskid wall construction method

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Embodiment Construction

[0037] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0038] refer to figure 1 , which is a construction method for the anti-sliding wall of a rigid variable cross-section high-pressure jet grouting pile 1 disclosed by the present invention, comprising the following steps:

[0039] S1. Landslide on-site investigation, surveying and mapping and engineering geological survey, analyze and judge the cause of slope instability and controlling factors; determine the position, thickness, shape and physical and mechanical indicators of the sliding zone soil 5;

[0040]S2. Carry out slope stability analysis according to the site survey, determine the predetermined spatial position of the anti-slide pile wall, determine the number of anti-slide pile walls and the embedding depth;

[0041] S3, the anti-sliding wall is piled, and the predetermined position is drilled and the high-pressure rotary grouting pile 1 is formed, ...

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Abstract

The invention relates to a stiffened variable cross section high-pressure jet grouting pile antiskid wall construction method. An antiskid wall comprises multiple high-pressure jet grouting piles which are engaged mutually, the high-pressure jet grouting piles penetrate slip soil in the vertical direction, the two ends of the high-pressure jet grouting piles are located on an undisturbed soil bodylocated below the slip soil and a landslide body located above the slip soil correspondingly. The top ends of the high-pressure jet grouting piles are located in the landslide body, and the tops of the high-pressure jet grouting piles are filled with backfill soil. The stiffened variable cross-section high-pressure jet grouting pile antiskid wall construction method has the effects that a soil arch effect is easily achieved on the slip soil, and the slip soil is not likely to be deformed.

Description

technical field [0001] The invention relates to the technical field of landslide reinforcement treatment, in particular to a construction method for an anti-sliding wall of a rigid variable cross-section high-pressure rotary grouting pile. Background technique [0002] Sliding zone soil refers to the soil that is squeezed, sheared, kneaded, and ground during the occurrence and development of the landslide, and the strength formed under the specific physical and chemical conditions in the sliding zone is low, and it is plastic and soft. Even flow plastic rock and soil. [0003] The instability of the slope caused by the sliding zone soil is a very serious natural disaster. Existing, such as the Chinese invention patent with the patent publication number CN108978687A, discloses a non-vertical anti-slide pile structure for landslide and slope control and The installation method includes: non-vertical anti-slide piles; inter-pile beams are arranged between the non-vertical anti...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D17/20E02D5/46E02D15/04
CPCE02D5/46E02D15/04E02D17/20E02D17/207
Inventor 秦前波谢盛庄诗鸿张堪培方进波张雷黄宇帆王玥力
Owner 广东省工程勘察院
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