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Pile casing and water-rich strata shield pile casing receiving method

A technology of water-rich layer and casing, applied in wellbore lining, underground chamber, tunnel lining, etc., can solve the problems of low work efficiency, hidden safety hazards of shield tunneling, long construction period, etc., and achieve short installation time and fast filling speed. , the effect of low cost

Inactive Publication Date: 2012-11-28
TIANJIN URBAN CONSTR TUNNEL
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AI Technical Summary

Problems solved by technology

However, for the receiving of shield tunnels in water-rich formations, traditional methods are difficult to solve the problems of water gushing and sand gushing during the receiving process, and there are great safety hazards in shield tunnel reception
In addition, the traditional method generally has a long construction period and low work efficiency.

Method used

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  • Pile casing and water-rich strata shield pile casing receiving method

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Embodiment Construction

[0015] The present invention will be further described below in conjunction with accompanying drawing:

[0016] In the figure, 1-inner flange, 2-access manhole, 3-inspection manhole, 4-tube plate, 5-high-strength bolt, 6-reinforcing rib, 7-valve, 8-grouting hole.

[0017] Such as figure 1 As shown, the inner flange 1 is located on one side of the cylinder, the access manhole 2 is located on the other side of the cylinder, and the inspection manhole 3 is located on the cylinder. The cylinder is composed of multiple cylinder plates 4, and the cylinder plate 4 is 16mm thick Made of steel plates, the 4 tube plates are connected by high-strength bolts 5 , multiple horizontal and vertical reinforcing ribs 6 are installed on the tube plate 4 , and four grouting holes 8 are opened, and valves 7 are installed on the grouting holes 8 .

[0018] Reinforce the soil of the well at the receiving end of the shield, build a concrete base on the soil and pre-embed the steel ring of the door f...

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Abstract

The invention provides a water-rich strata shield receiving pile casing which is characterized by comprising a casing body, an inner flange, an access manhole and an inspection manhole, wherein the inner flange is positioned at one side of the casing body; the access manhole is positioned at the other side of the casing body; the inspection manhole is positioned in the casing body; the casing body is composed of more than one casing plate; the casing plates are connected through high-strength bolts and provided with deep floors and injected holes; and valves are arranged on the injected holes. The water-rich strata shield pile casing receiving method is characterized by comprising the following steps of pile casing base construction, pile casing installation and fixation, packing seal, shield entry and pile casing removing. The pile casing has the beneficial effects of being easy to dismount the casing plates due to the adoption of segmental assembling mode, low in composite cost, short in installation time and high in safety and reliability, being repeatable, and being capable of shortening the construction period obviously and improving work efficiency; and since the pile casing is sheathed outside the soil body of an end well and has extremely good sealing performance, the probability of water leakage, sand leakage and other conditions is reduced greatly.

Description

[0001] technical field [0002] The invention relates to the field of shield tunneling, in particular to a casing and a shield receiving method. Background technique [0003] The construction of tunnels using the shield method in my country began in Shanghai in the 1950s and 1960s. In the past two decades, many cities in China have used the shield method for tunnel construction. The mastery of shield tunneling construction technology is also different. The safe receiving method of shield tunneling is one of the main research contents of shield tunneling method construction technology. Traditional methods mainly use concrete open hole grouting method, freezing method, and underwater arrival method. However, for the receiving of shield tunnels in water-rich formations, traditional methods are difficult to solve the problems of water gushing and sand gushing during the receiving process, and shield tunnel reception has great potential safety hazards. In addition, the tradition...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21D11/38E21D11/10
Inventor 王世友杜亚民谭晶辉季岩涛靳友光
Owner TIANJIN URBAN CONSTR TUNNEL
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