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A tunnel lining structure and construction method filled with ceramsite

A technology of ceramsite and tunnel, which is applied in the field of tunnel lining structure and construction, which can solve the problems of large deformation of tunnel surrounding rock, extrusion deformation damage, and absence of equipment, etc., and achieve the effects of reduced strength, low self-weight, and low noise

Active Publication Date: 2019-03-29
CHINA THREE GORGES UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are many problems in the construction process of the steel arch frame in the tunnel: first, after the excavation of the tunnel in the expansive soil layer, the deformation of the surrounding rock of the tunnel is relatively large, and the deformation can reach 10-30 cm, which causes the steel arch frame to bear a lot of pressure, which is extremely Prone to extrusion deformation damage
At present, to find the device that solves the above problems does not yet exist

Method used

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  • A tunnel lining structure and construction method filled with ceramsite
  • A tunnel lining structure and construction method filled with ceramsite
  • A tunnel lining structure and construction method filled with ceramsite

Examples

Experimental program
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Effect test

Embodiment 1

[0039] like Figure 1-8 , a tunnel lining structure filled with ceramsite, which includes a surrounding rock 1, primary support 3 is anchored on the tunnel rock mass of the surrounding rock 1 through bolts 2, and the inner layer of the primary support 3 is laid There is a waterproof layer 4, on the inner layer of the waterproof layer 4, a ceramsite filler 5 is laid, a steel arch 7 is set inside the ceramsite filler 5, and a secondary lining 8 is poured inside the steel arch 7. By adopting the above-mentioned tunnel lining structure, the initial support 3 is implemented in time after the tunnel is excavated, and the basic form is shotcrete and the anchor rod 2, and then the ceramsite filler 5 is set on the basis of the reserved deformation joints as the filling type. Lining, followed by the laying of the waterproof layer 4, the secondary lining 8 adopts the form of erecting steel arches and pouring integral molded concrete to give full play to the bearing capacity of the surrou...

Embodiment 2

[0050] Any construction method using ceramsite-filled tunnel lining structure is characterized in that it includes the following steps:

[0051] Step1: Before excavating the tunnel, grouting is applied to radially advanced small conduits. The small conduits are seamless steel pipes with a diameter of 30-50mm and a length of 25-40mm. Test confirmed, using high-pressure grouting pump grouting;

[0052] Step2: After the excavation of the tunnel, implement the initial support 3 in time, install the steel mesh, set the anchor rod 2, mix the concrete mixture mixed with the quick-setting agent and water into a slurry, and spray it on the wall of the tunnel to condense;

[0053] Step3: Install the automatic pressure gauge 6 to measure the deformation of the surrounding rock;

[0054] Step4: Lay the waterproof layer 4, adopt the membrane waterproof layer, and lay it on the entire section of the arch and the side wall. The material is geotextile and waterproof board, and set the system...

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Abstract

The invention discloses a tunnel lining structure filled with ceramsite and a construction method, which includes surrounding rock, primary support is anchored on the tunnel rock mass of the surrounding rock through bolts, and the inner layer of the primary support is A waterproof layer is laid, a ceramsite filler is laid on the inner layer of the waterproof layer, a steel arch is set inside the ceramsite filler, and a secondary lining is poured inside the steel arch. Using this technology can give full play to the bearing capacity of the supporting material itself, greatly improve the utilization rate of the steel arch, reduce the amount and strength requirements of the steel arch, use ceramsite fillers to protect the steel arch to the greatest extent, and effectively control the surrounding rock Deformation, protection and reinforcement of surrounding rock, saving resources and realizing green economy.

Description

technical field [0001] The invention belongs to the field of tunnel engineering lining structures, and in particular relates to a tunnel lining structure filled with ceramsite and a construction method. Background technique [0002] In contemporary society, with the rapid development of my country's economy, my country's high-speed railways, high-grade highways, expressways, intercity railways, subways, urban rail transit, etc. have developed rapidly, and there are more and more tunnels and underground projects. Tunnel engineering is an underground structure in various geological environments. The unpredictability of geological environment determines the high risk and complexity of tunnel engineering. Its construction safety and engineering quality issues have also attracted people's attention. The quality of tunnels It is concealed, sudden, complex and repetitive. Tunnel engineering is not only a complex project involving many disciplines, but also has the characteristics ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21D11/10E21D11/00E21D11/38E21D20/02
CPCE21D11/003E21D11/105E21D11/38E21D20/021
Inventor 刘杰兰俊燕波高进张罗送高素芳黎照孙涛阳菲李杨
Owner CHINA THREE GORGES UNIV
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