Water-rich sand layer pre-stressed anchor cable installation method

A technology of prestressed anchor cables and installation methods, applied in excavation, sheet pile walls, construction, etc., can solve problems such as inability to specify solutions, non-fitting, affecting the stability of anchor cable installation and practical usability, and achieve efficiency And the effect of high safety and stability and improving stability

Inactive Publication Date: 2020-10-09
SUBWAY ENG CO LTD OF CHINA RAILWAY 16TH CONSTR BUREAU
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] To sum up, when the anchor cable is applied to the water-rich sand layer, an effective solution cannot be specified, and there is a problem that it does not fit the actual installation position. Environmental factors have a great influence on the actual installation process, so it will affect the anchor cable. Cable installation stability and practical usability

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] A method for installing a prestressed anchor cable in a water-rich sand layer, including the stage of on-site environmental exploration, the stage of detection, the stage of formulating an installation plan, and the stage of actual installation, including the following installation steps:

[0031] Step 1: On-site environmental exploration stage: understand the environment of the installation site through on-site inspection;

[0032] Step 2: Detection stage: Sampling and testing the water content of the sand layer and testing the hardness of the fixed rock formation;

[0033] Step 3: Formulate the installation plan stage: draw up the installation plan according to the test results combined with the field exploration situation;

[0034] Step 4: Actual installation stage: Carry out actual construction according to the established installation plan.

[0035] The field environmental exploration stage includes observing the distribution range of the sand layer and the requir...

Embodiment 2

[0039] In the detection stage, it is necessary to detect the water content of the sand layer and the strength of the fixed rock formation;

[0040] The sampling equipment samples the sand layer by drilling holes, sends the sand layer samples obtained from the drilling holes for inspection, detects the water content in the sand layer, and adopts a multi-stage continuous sampling method to continuously and comprehensively sample the sand layer at the installation location, and different The sampling position of the sand layer and the water content of the sampled sand layer at the corresponding position are recorded separately, which is convenient for actually grasping the geological conditions of the sand layer, and provides a basis for the subsequent formulation of the installation plan;

[0041] The sampling drilling equipment drills through the sand layer to sample the fixed rock layer, and uses an extruder to analyze the strength of the fixed rock layer, and the fixed rock la...

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PUM

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Abstract

The invention discloses a water-rich sand layer pre-stressed anchor cable installation method which comprises a field environment exploration stage, a detection stage, an installation scheme making stage and an actual installation stage. The water-rich sand layer pre-stressed anchor cable installation method comprises the following installation steps of 1, the field environment exploration stage,specifically, understanding the environment of an installation field through field investigation; 2, the detection stage, specifically, sampling and detecting the water content of a sand layer and detecting the hardness of a fixed rock layer; 3, the installation scheme making stage, specifically, making an installation scheme according to a detection result in combination with a field explorationcondition; and 4, the actual installation stage, specifically, carrying out actual construction according to the formulated installation scheme. According to the method, the detailed installation scheme is designated before installation, the sandstone water content of the installation position and the strength of the fixed rock layer are analyzed, the influence of the environment and address factors on the stability of an installed anchor cable in the installation process can be effectively eliminated, and it is ensured that the installed anchor cable is more stable.

Description

technical field [0001] The invention relates to the technical field of foundation pit support, in particular to a method for installing a prestressed anchor cable in a water-rich sand layer. Background technique [0002] The prestressed anchor cable refers to the cable-shaped support that anchors the anchor cable inside the rock mass by prestressing method, and is used to reinforce the slope. The anchor cable structure is generally composed of three parts: the amplitude anchor head, the anchor cable body and the outer anchor head. Therefore, the stress state of the rock mass of the slope can be changed, and the integrity and strength of the unstable rock mass of the slope can be improved. During the construction of prestressed anchor cables, special tensioning devices and tools are required. [0003] After a massive search, it was found that the prior art publication number is CN106522243B, which discloses a construction method of prestressed anchor cables grouting and anc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D17/04E02D5/76E02D15/04
CPCE02D5/76E02D15/04E02D17/04
Inventor 毛文龙王伟史晓欧刘振东康晓培张锋
Owner SUBWAY ENG CO LTD OF CHINA RAILWAY 16TH CONSTR BUREAU
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