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

A technology with large diameter and steep inclination angle, which is applied in the new technology field of concrete lining slipform construction of steep inclination angle, large diameter and long inclined shaft. The effect of construction period, reasonable stress and stable operation

Inactive Publication Date: 2005-06-08
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 new technology for the construction of concrete lining slipforms for large-diameter and long-inclined shafts with steep inclination angles, which solves the problem of eccentric force on the sliding formwork of long-inclined shafts with steep inclination angles and large-diameter long inclined shafts, which is prone to form body deflection. Faults such as floating and track deformation

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 new construction technology of concrete lining slip form, in particular to a new construction technology of slip form construction of concrete lining with steep angle and large diameter and 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 fir...

Claims

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Application Information

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IPC IPC(8): E02B9/04
CPCY02E10/20
Inventor 常焕生曲建军张洪江金晨王克胜
Owner SINOHYDRO BUREAU 1 CO LTD