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Tunnel construction method

A technology for tunnel construction and tunneling, which is applied in tunnels, earthwork drilling, blasting, etc., can solve problems such as large construction workload, and achieve the effect of improving construction efficiency and reducing construction workload.

Inactive Publication Date: 2017-05-31
四川福庆隧道机械设备有限公司
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Problems solved by technology

This excavation method uses a wire saw machine to excavate in blocks, which reduces the disturbance to the surrounding rock mass, but this method is usually suitable for excavation of geotechnical engineering, and the construction workload is relatively large

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Embodiment Construction

[0025] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0026] The construction method adopted in the present invention is to utilize the tunnel boring machine to construct the middle part of the tunnel first, and then adopt methods such as drilling and blasting to construct the remaining parts; adopting this method to carry out construction has not only fully utilized the construction of the wire saw type roadheader At the same time, it provides favorable construction conditions for the construction of the remaining parts such as drilling and blasting.

[0027] Such as figure 1 , in this embodiment, the middle part of the tunnel section is divided into six small rectangles of the same area as an example for illustration; the six small rectangles are divided into two layers, each layer includes three small rectangles, and each layer The three small rectangles are arranged side by side, and the uppe...

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Abstract

A tunnel construction method comprises the following steps that the middle part of the section of a tunnel is divided into a plurality of small rectangular blocks, all the small rectangular blocks form a one-layer or multilayer structure, all the small rectangular blocks in each layer are arranged side by side, and all the layers are arranged up and down in a stacked mode; all the small rectangular blocks in the middle of the tunnel are constructed through a tunneling machine, and construction of the middle of the tunnel is completed sequentially in the tunneling sequence from top to bottom among different layers; after construction of the middle of the tunnel, the part of the tunnel except the middle is constructed, and construction of one section of tunnel is completed; and according to the above method, construction of all sections is completed forwards sequentially. According to the tunnel construction method, the middle of the tunnel is constructed through the tunneling machine, and then the rest part is constructed through a drilling-blasting method and other methods. The construction characteristics of the rope saw heading machine are fully used, meanwhile, advantageous construction conditions are provided for construction of the rest part through the drilling-blasting method and other methods, thus construction workload is reduced, and construction efficiency is improved greatly.

Description

technical field [0001] The invention relates to a tunnel construction method. Background technique [0002] In the excavation of tunnels or tunnels, the commonly used measures are blasting excavation or shield machine excavation. Among them, there are serious safety hazards in blasting excavation, and the construction quality is difficult to guarantee. The phenomenon of over-excavation and under-excavation is very prominent. When crossing sections with complex geological conditions, the safety risks are doubled. Shield machine excavation is the use of shield machine equipment for excavation. Shield machine equipment integrates optical, mechanical, electrical, hydraulic, sensing, and information technologies. It has the functions of excavating and cutting soil, conveying soil, and assembling tunnel lining , measurement-oriented correction and other functions, but due to its high cost, which determines the high construction cost, it is generally only used in the construction ...

Claims

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Application Information

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IPC IPC(8): E21D9/00F42D3/04E21D9/10
CPCE21D9/00E21D9/006E21D9/10
Inventor 张清林张飞
Owner 四川福庆隧道机械设备有限公司
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