Unlock instant, AI-driven research and patent intelligence for your innovation.

A tunnel lining waterproof structure adapted to the salt rock stratum

A waterproof structure and salt rock technology, applied in tunnel lining, tunnel, wellbore lining and other directions, can solve the problems of single waterproof layer, dissolution and loss of salt rock around the cave, cracking of tunnel lining, etc., so as to inhibit flow and prevent the dissolution and loss of salt rock. , to ensure the effect of stability

Active Publication Date: 2022-03-15
CHINA RAILWAY ERYUAN ENG GRP CO LTD
View PDF10 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to overcome the disadvantages of the tunnel lining waterproof and drainage system in the prior art that allow drainage and have a single waterproof layer, which easily leads to the dissolution and loss of salt rock around the cave in the salt rock stratum, and the tunnel lining cracks. Lining waterproof structures for tunnels in salt rock formations

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A tunnel lining waterproof structure adapted to the salt rock stratum
  • A tunnel lining waterproof structure adapted to the salt rock stratum

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Such as figure 1As shown, a tunnel lining waterproof structure adapted to the surrounding rock is a salt rock formation, including a water-resistant layer, the water-resistant layer is located between the primary support structure 1 and the second lining structure 2, and the second lining structure 2 is circular Section, the water-proof layer is arranged in a full circle, and the water-proof layer includes a first waterproof layer 31, a second waterproof layer 32 and a plain concrete layer 33, and the plain concrete layer 33 is located between the first waterproof layer 31 and the second waterproof layer. Between the two waterproof layers 32, the outer ring of the primary support structure 1 is provided with a grouting water blocking layer 4.

[0032] Adopting a tunnel lining waterproof structure adapted to the surrounding rock of the present invention as a salt rock stratum, the grouting water blocking layer 4 is arranged on the whole ring to be beneficial to bear the ...

Embodiment 2-5

[0045] (polymer concrete)

[0046] First, prepare the polymer modifier: S1, weigh styrene-acrylic emulsion, silica sol and silane coupling agent KH-330 in a weight ratio of 1:0.3:0.15; S2, weigh silica sol, silane coupling agent and styrene-acrylic The emulsions were mixed and ultrasonicated for 5 minutes at room temperature to obtain a polymer modifier.

[0047] Then, polymer concrete was prepared, and the weight ratio of the raw material components of the polymer concrete was shown in the following table, and the polymer concrete was mixed and stirred uniformly according to the conventional concrete preparation method to obtain the polymer concrete.

[0048] cement sand gravel fly ash water expansion agent Superplasticizer Defoamer polymer modifier Example 2 260 780 1020 80 120 40 5.05 1.05 40 Example 3 260 780 1020 80 120 40 5.05 1.05 50 Example 4 260 780 1020 80 120 40 5.05 1.05 60 Example 5 260 7...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a tunnel lining waterproof structure adapted to the salt rock stratum as the surrounding rock, comprising a water-resistant layer, the water-resistant layer is located between the primary support structure and the second lining structure, and the second lining structure has a circular cross section. The water-proof layer is arranged in a full ring, and the water-proof layer includes a first waterproof layer, a second waterproof layer and a plain concrete layer, and the plain concrete layer is located between the first waterproof layer and the second waterproof layer, so The outer ring of the primary support structure is provided with a grouting water blocking layer. Adopting this structure is beneficial to withstand water pressure, increase the density of bedrock and the filling rate of pores and fissures, effectively inhibit the flow of groundwater, prevent the loss of salt rock dissolution, and at the same time reduce the entry of groundwater into the tunnel structure, prevent corrosion of lining steel bars, and better To bear the water pressure around the tunnel caused by fully enclosed waterproofing, the plain concrete layer avoids the formation of seepage channels, which changes the traditional waterproof structure of tunnels, and can resist large underground water pressure and ensure waterproofing effect without drainage measures.

Description

technical field [0001] The invention relates to the technical field of tunnel lining structures, in particular to a tunnel lining waterproof structure suitable for surrounding rocks in salt rock formations. Background technique [0002] Tunnel projects passing through the geological conditions of salt rock formations in China are very rare, so tunnel spoil sites in high salt rock formations are also very rare. Salt rock is a chloride salt mineral, which has the characteristics of strong chloride salt corrosion, strong dissolution, and expansion. [0003] The waterproof system of traditional tunnels generally adopts the method of "combination of anti-drainage", which adopts the waterproofing of concrete itself, geotextile and waterproof board between the primary support and the secondary lining, waterstops in the longitudinal construction joints of the lining ring, and waterstops behind the secondary lining. Measures such as circumferential blind pipes, vertical blind pipes ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): E21D11/38E21D11/10
CPCE21D11/38E21D11/10
Inventor 刘志韬吴华舒俊良罗仁立陶伟明刘鹏李鹏州易鹏刘世杰杨家松白小可李锋刚
Owner CHINA RAILWAY ERYUAN ENG GRP CO LTD