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A tunnel lining with press-in mold pouring technology and its method for monitoring the pressure and fullness of the lining concrete

A concrete and lining technology, applied in the direction of tunnel lining, tunnel, shaft lining, etc., can solve the problems of concrete void, incompact and full state without effective methods or means, so as to reduce the hidden danger of tunnel traffic operation and save manpower and financial resources. Effect

Active Publication Date: 2021-12-10
CHINA RAILWAY TUNNEL GROUP CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Obviously, it is difficult to meet the new standards of the current high-speed railway tunnel lining construction by using the traditional tunnel lining construction technology and tooling equipment in the past. It is an opportunity and a challenge to develop new technology and tooling to solve the defects of the tunnel for many years. Therefore, the high-speed railway tunnel lining construction technology and The exploration and research of tooling equipment appear to have very important practical significance
In summary, the above innovations are all about monitoring the void or empty state of the tunnel vault or the concrete pouring equipment, and there is no effective method or means for solving the empty, uncompacted and full state of concrete

Method used

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  • A tunnel lining with press-in mold pouring technology and its method for monitoring the pressure and fullness of the lining concrete
  • A tunnel lining with press-in mold pouring technology and its method for monitoring the pressure and fullness of the lining concrete
  • A tunnel lining with press-in mold pouring technology and its method for monitoring the pressure and fullness of the lining concrete

Examples

Experimental program
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Effect test

Embodiment 1

[0035] Such as figure 1 As shown, a tunnel lining vault pouring process includes the following steps: construction preparation, concrete filling construction and acceptance construction;

[0036] The construction preparation includes concrete production, concrete transportation and concrete entry acceptance. Waiting for the pump to be sent into the formwork, the concrete is produced first, and then transported to the construction site for acceptance. If the acceptance is qualified, the concrete is sent into the concrete by the delivery pump Filling construction, if the concrete is unqualified, it will be returned to the manufacturer;

[0037] The concrete filling construction includes the acceptance of the previous process. After the acceptance is passed, the initial support is carried out and the waterproof layer is laid on the lower surface of the concrete. After the inspection and acceptance, the construction joints of the tunnel lining wall and arch are treated, and the fo...

Embodiment 2

[0045] Such as figure 2 and Figure 3-1 , Figure 3-2 As shown, a method for monitoring the pressure and fullness of the tunnel lining vault includes the following steps: (1) laying distributed pressure sensors between the waterproof board and the primary support concrete to judge the relationship between the primary support concrete and the arch. The contact state of the roof, the upper surface of the vault formwork is laid with pressure sensors, which are used to judge the bottom pressure of the lining vault, and the lower surface of the vault formwork is equipped with several second pressure sensors, which are used to judge the concrete compactness of the lining vault; the formwork The length of the trolley is 12m, 2 pressure sensors are installed at the top 1m from both ends, and 2 pressure sensors are installed every 2.5m in the middle, a total of 4 pressure sensors; the side wall pressure sensors are arranged at a position about 3m away from the rail surface of the tro...

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Abstract

The invention discloses a tunnel lining belt press-in mold pouring process and a method for monitoring the pressure and fullness of the lining concrete, including the construction preparation process, the concrete filling construction process and the acceptance construction process; the invention is simple and practical, and utilizes top distributed pressure The density sensor can effectively and intuitively check the full state of the vault concrete. It is easy to understand and suitable for workers to operate; it saves manpower and financial resources; it cannot completely solve the two types of problems of density and fullness at the same time. The feedback signal of this combined monitoring technology is used to determine the lining. Concrete pouring end standard; according to the pressure and full state monitoring results, the end time of concrete pouring can be comprehensively judged, and the safety state of the carrying capacity of the trolley itself can be dynamically monitored during the construction process, which provides a reference for operators and management, and reduces tunnel accidents. A series of problems in the lining vault, such as voids, voids, lack of compactness, water leakage, construction joint collapse, construction joint loss, and water stop deviation, reduce risks and hidden dangers to tunnel traffic operations.

Description

technical field [0001] The invention relates to the technical field of tunnel construction, in particular to a tunnel lining belt press-in mold pouring process and a method for monitoring the pressure and fullness of the lining concrete. Background technique [0002] With the rapid development and rise of China's high-speed railway, the rapid development of high-speed railway tunnel engineering has also added new impetus to the technological progress of high-speed railway. According to statistics, as of the end of 2018, my country's railway operating mileage reached 131,000 km, of which high-speed rail operating mileage exceeded 29,000 km, and the number of operating tunnels was 14,100; by the end of 2020, the total number of railway tunnels put into operation will reach 17,000. The length will exceed 20,000 km. As a tunnel project, the lining of the tunnel project is a key construction process and one of the most complicated processes. According to relevant statistics, the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21D11/10G01D21/02
CPCE21D11/10E21D11/102G01D21/02
Inventor 李立功高存成刘洛汉林春刚尚伟
Owner CHINA RAILWAY TUNNEL GROUP CO LTD
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