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Steep slope large diameter long glant wall conerete lining sliding mould construction technology

A construction method and a large-diameter technology, which can be applied in shaft lining, tunnel lining, earthwork drilling and mining, etc., can solve problems such as track deformation, eccentric force on the formwork, and deflection of the formwork, so as to achieve reasonable force, stable operation, Structurally Reliable Effects

Inactive Publication Date: 2006-06-28
SINOHYDRO BUREAU 1 CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a construction method of concrete lining slipform for steep-inclined and large-diameter long inclined shafts, which solves the problem of eccentric force on the sliding formwork of steep-inclination and large-diameter long inclined shafts, which is prone to form deflection and floating. and track deformation and other faults

Method used

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  • Steep slope large diameter long glant wall conerete lining sliding mould construction technology
  • Steep slope large diameter long glant wall conerete lining sliding mould construction technology

Examples

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Embodiment 1

[0028] The 1# inclined shaft of Tongbai Pumped Storage Power Station has an inclination angle of 50°, a diameter of 9m, and a length of 364m. It is the largest long inclined shaft in China. The specific construction steps are as follows:

[0029] 1. Before the formal installation of the sliding formwork system, the formwork must be pre-assembled, and the dimensions of each part must be checked. If it does not meet the design requirements, it should be handled according to the design requirements;

[0030] 2. Test and calibrate the hydraulic jack to verify its traction capacity and establish a relationship curve between oil pressure and output;

[0031] 3. Test the bearing capacity of the steel strand; anchor the steel strand at the top arch of the upper bend;

[0032] 4. Install the guide rail for the formwork on the bottom plate of the inclined shaft according to the design position, and the installation accuracy is controlled according to the formwork installation accuracy;...

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Abstract

This invention relates to a technique of steep dip, big diameter, and rhomboidal concrete lining synovial membrane construction. One end of the steel stranded wire is anchored on the bend top rock by drill hole and injection, with the depth of 10m; the other end is connected with the continuous stretching hydraulic jack. In the construction process, when the mold is filled with concrete, it can lifted by the pulling system, the height being controlled below 40cm, and the strength of the concrete being controlled between 0.3-0.5 MPa. Its advantages are reliable structure, proper stress, stable operation, and low cost.

Description

technical field [0001] The invention relates to a concrete lining sliding form construction method, in particular to a concrete lining sliding form construction method with a steep angle and a large diameter and a long inclined shaft, which is a new type of construction technology. Background technique [0002] Inclined wells with steep dips and large diameters are unique structures for underground water diversion hydropower stations, and their concrete lining construction is a technically complex and difficult project. [0003] The 2# and 3# water diversion inclined shafts of Baishan Hydropower Station have an inclination angle of 60°, a diameter of 7.5m, and a length of 33m and 52m respectively. The concrete lining is constructed with a hoist to pull the formwork for slipform construction (1981), and won the first prize for scientific and technological progress of the Ministry of Water and Electricity. The sliding mode system can be called the first generation inclined sha...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21D11/10E02B9/04
CPCY02E10/22Y02E10/20
Inventor 常焕生曲建军张洪江金晨王克胜
Owner SINOHYDRO BUREAU 1 CO LTD