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Tunnel lining structure filled with ceramic particles and construction method

A ceramsite and tunnel technology, applied in the field of tunnel lining structure and construction, can solve the problems of large deformation of the surrounding rock of the tunnel, extrusion deformation damage, and the absence of devices, and achieve the effects of reducing strength, small dead weight, and low noise.

Active Publication Date: 2018-05-11
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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  • Tunnel lining structure filled with ceramic particles and construction method
  • Tunnel lining structure filled with ceramic particles and construction method
  • Tunnel lining structure filled with ceramic particles and construction method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] Such as Figure 1-8 , A tunnel lining structure filled with ceramsite, which includes a surrounding rock 1, an anchor rod 2 anchors the inherent initial support 3 on the tunnel rock mass of the surrounding rock 1, and the inner layer of the initial support 3 is laid There is a waterproof layer 4, and a ceramsite filler 5 is laid on the inner layer of the waterproof layer 4, a steel arch 7 is set inside the ceramsite filler 5, and a secondary lining 8 is poured on the inner side of the steel arch 7. By adopting the above-mentioned tunnel lining structure, the initial support 3 shall be implemented in time after the tunnel is excavated. The basic form is shotcrete and anchor rod 2. Then, ceramsite filler 5 is set as a filling type on the basis of reserved deformation joints. Lining, followed by laying waterproof layer 4, the secondary lining 8 adopts the form of erecting steel arch frame and pouring integrally moulded concrete to give full play to the bearing capacity of s...

Embodiment 2

[0050] Any construction method of a tunnel lining structure filled with ceramsite is characterized by including the following steps:

[0051] Step1: Before excavating the tunnel, apply grouting with a radially advanced small pipe. The small pipe uses a seamless steel pipe with a diameter of 30-50mm and a length of 25-40mm. The selection of grouting materials, the ratio and the grouting pressure are all controlled. The test confirmed that high-pressure grouting pump is used for grouting;

[0052] Step2: After the tunnel is excavated, implement the initial support 3 in time, install the steel mesh, install the anchor rod 2, mix the concrete mixture mixed with the accelerator and water into a slurry, and spray it on the wall of the cave to set;

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

[0054] Step4: Laying waterproof layer 4, using coiled material waterproof layer, laying on the full section of the arch and side wall, the materia...

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Abstract

The invention discloses a tunnel lining structure filled with ceramic particles and a construction method. The tunnel lining structure comprises a surrounding rock, a preliminary support is anchored to a tunnel rock body of the surrounding rock through anchoring rods, and a waterproof layer is laid on the inner layer of the preliminary support. A ceramic particle filler is laid on the inner layerof the waterproof layer, steel anchoring frames are arranged on the inner side of the ceramic particle filler, and secondary lining pouring is conducted on the inner sides of the steel arching frames.By adopting the technology, the bearing capacity of support materials can be brought into full play, the utilization rate of the steel arching frames is greatly increased, the using quantity of the steel arching frames is decreased, the strength requirement of the steel arching frames is lowered, the ceramic particle filler is utilized to protect the steel arching frames to the utmost extent, deformation of the surrounding rock is effectively controlled, the surrounding rock is protected and reinforced, resources are saved, and the environment-friendly and economic effects are achieved.

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 the geological environment determines the high risk and complexity of tunnel engineering. The 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 Applications(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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