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Underwater anchor rod construction method

An anchor rod construction and anchor rod technology is applied in the direction of infrastructure engineering, construction, sheet pile wall, etc.

Inactive Publication Date: 2014-03-26
HUBEI GEZHOUBA TESTING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] During the construction of the Xinglong Water Conservancy Project, a supporting project of the middle route of the South-to-North Water Diversion Project, the construction of the weir was not broken according to the plan, and the abnormal water inflow into the foundation pit caused disturbance and damage to the concrete floor of the diversion channel of the power station

Method used

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  • Underwater anchor rod construction method

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Effect test

Embodiment 1

[0025] During the construction of Xinglong Water Conservancy Project, the concrete floor of the diversion channel of the power station was disturbed and damaged, and part of the concrete floor was lifted and damaged. There was a local cavity formed by the loss of fine sand in the lower part of the floor. After underwater repair, it was necessary to arrange anchors on the surface of the diversion channel for reinforcement . Such as figure 1 As shown in , the specific steps of the anchor rod arrangement are as follows:

[0026] 1) Construction platform positioning Set up a water construction platform 1 on the water surface of the point to be constructed for placing the drilling rig and the grouting pump;

[0027] 2) Drilling and setting out Drilling and setting out on the bagged concrete layer above the original concrete floor to determine the position of the drilled holes;

[0028] 3) After the underwater casing installation hole position is staked out, first use the φ90mm ca...

Embodiment 2

[0035] In the middle and lower reaches of the Gudongkou Reservoir Project, the concrete bottom plate of the stilling pool was damaged after long-term erosion. After inspection, it was found that there was a depleted layer between the concrete of the stilling pool bottom plate and the bedrock, and the depleted area needs to be grouted As well as the arrangement of anchor bolts for reinforcement, the entire construction area is located underwater. The specific underwater anchor construction and grouting methods are as follows:

[0036] 1) Construction platform positioning Set up a water construction platform on the water surface of the point to be constructed for placing drilling rigs and grouting pumps;

[0037] 2) Drilling and setting out Drilling and setting out at the damaged concrete position of the bottom plate of the original stilling basin to determine the position of the drilled hole;

[0038] 3) After the underwater casing installation hole is staked out, use the casi...

Embodiment 3

[0045] During the construction of Xinglong Water Conservancy Project, the concrete floor of the diversion channel of the power station was disturbed and damaged, and part of the concrete floor was lifted and damaged. There was a local cavity formed by the loss of fine sand in the lower part of the floor. After underwater repair, it was necessary to arrange anchors on the surface of the diversion channel for reinforcement . Such as figure 1 As shown in , the specific steps of the anchor rod arrangement are as follows:

[0046] 1) Construction platform positioning Set up a water construction platform on the water surface of the point to be constructed for placing drilling rigs and grouting pumps;

[0047] 2) Drilling and setting out Drilling and setting out on the bagged concrete layer above the original concrete floor to determine the position of the drilled holes;

[0048] 3) After the underwater casing installation hole is staked out, the casing is used as the drill pipe fi...

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Abstract

The invention provides an underwater anchor rod construction method. Anchor rod construction is carried out on an underwater hydraulic structure through the work procedures of arrangement of an overwater platform, drilling lofting, installation of an underwater sleeve pipe, formation of an anchor rod installation hole in the sleeve pipe in a drilling mode, underwater installation of the anchor rod through a drilling rod, blockage and sealing of a hole opening, underwater anchor rod grouting, removal of the drilling rod and the like. By means of the underwater anchor rod construction method, under the condition that the underwater structure needs repairing or reinforcing, construction can be directly carried out with water, and the actual requirements of a project are met.

Description

technical field [0001] The invention relates to the technical field of hydraulic building construction, in particular to an underwater bolt construction method. Background technique [0002] During the construction of the Xinglong Water Conservancy Project, a supporting project of the middle route of the South-to-North Water Diversion Project, the construction of the weir was not broken according to the plan, and the abnormal water inflow into the foundation pit caused disturbance and damage to the concrete floor of the diversion channel of the power station. The foundation of the aqueduct is all silt and fine sand layer. After the concrete floor is disturbed, the silt and fine sand at the bottom flow with the water gushing, part of the concrete floor is lifted or collapsed and damaged, and there may be local cavities formed by the loss of silt and fine sand in the lower part of the floor. [0003] Since the foundation pit has been filled with water, the repair of the bottom...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D5/74E02D7/00
Inventor 程雪军刘小江郭红亮刘先斌
Owner HUBEI GEZHOUBA TESTING
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