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New special combined construction method for ultra-shallow earth covered special-shaped passage

A new method and special-shaped technology, applied in the field of special combination construction of ultra-shallow soil-covered special-shaped passages, can solve problems such as extended construction period and sharp increase in production costs

Inactive Publication Date: 2012-06-27
SHANGHAI MECHANIZED CONSTR GRP
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Problems solved by technology

However, when the cross-section of the underground tunnel is large, a large number of tool pipes will be needed when using the tool pipe curtain for construction, and because the price of the tool pipe is relatively expensive, the construction of the large cross-section underground tunnel with the tool pipe curtain will bring The sharp increase in production costs and the extension of the construction period

Method used

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  • New special combined construction method for ultra-shallow earth covered special-shaped passage
  • New special combined construction method for ultra-shallow earth covered special-shaped passage
  • New special combined construction method for ultra-shallow earth covered special-shaped passage

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Embodiment Construction

[0007] In the figure, 1. Small module square tunneling machine, 2. Square steel pipe, 3. Anti-friction steel plate, 4. Large module tunneling machine, 5. Spiral excavator, 6. Large section tunneling machine, 7. Stepping propulsion device, 8 , Reinforced concrete box culvert, 9. Hydraulic rear propulsion device, 10. Pumping muck device.

[0008] figure 1 The small module square roadheader 1 only exists during the pipe curtain construction, and after the pipe curtain construction is completely completed, the small module square roadheader 1 is disassembled and transported away from the receiving shaft.

[0009] During actual construction, the top of the construction surface of the underground tunnel in the layer is excavated with a small module square roadheader, (2) push the square steel pipes section by section, (3) continue with step (1) until the top of the construction surface of the underground tunnel is completely The square steel pipes are pushed in section by section t...

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Abstract

For solving the problems in large cross section underground tunnel construction of a shallow covered earth layer in the prior art, the invention provides a new special combined construction method for an ultra-shallow earth covered special-shaped passage.

Description

technical field [0001] The invention relates to a new method for special combined construction of ultra-shallow soil-covered special-shaped passages. Background technique [0002] At present, in the construction of underground tunnels crossing railways or highways, the main method is to use the tunnel boring method, which is to use the cutting cutter head in front of the roadheader to cut the soil layer. However, once the top soil layer of the underground tunnel construction surface When it is thinner, the overburden layer collapses due to underground excavation, and construction can no longer be performed. At this time, the construction of underground box culvert jacking and replacement tool pipe curtain can be used, that is, multiple small-diameter tool pipes of the same specification are first jacked under the railway or highway line, which can reduce the disturbance to the covering soil and maintain the covering soil layer. When the tool pipe forms a tool pipe curtain w...

Claims

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Application Information

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IPC IPC(8): E21D9/06E21D11/04
Inventor 罗鑫吴小建黄毅应建华滕延锋吴欣之金中林毕伟麟王国弼孙继辉
Owner SHANGHAI MECHANIZED CONSTR GRP
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