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A kind of excavation construction method for chambers in special strata

A construction method and chamber technology, applied in underground chambers, earthwork drilling, shaft equipment, etc., can solve problems such as large engineering volume, weak excavation support, and easy landslides

Active Publication Date: 2021-01-15
浙江省隧道工程集团有限公司
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  • Abstract
  • Description
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Problems solved by technology

[0003] The present invention provides an excavation construction method for chambers in special strata, aiming at the disadvantages of the prior art that the excavation support is not firm and easy to collapse, and the engineering quantity is large.

Method used

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  • A kind of excavation construction method for chambers in special strata
  • A kind of excavation construction method for chambers in special strata
  • A kind of excavation construction method for chambers in special strata

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Embodiment 2

[0067] The difference between this embodiment and Embodiment 1 is that this embodiment also provides an overall construction plan for the support of the large chamber hall.

[0068] The overall construction scheme of hall support

[0069] Such as Figure 4 As shown, (1) design a pair of integral steel mold trolley at the 6-meter span of the main body. The trolley is composed of two parts, each of which is 3 meters long and can be docked.

[0070] (2) The hall is supported by full scaffolding in the middle, 20# industrial steel columns on the wall, and 12# industrial steel arches on the arch form the main body of the support system, and the joint force is achieved through screw jacks. Shaped steel formwork is used for the formwork arch, and large steel-wood combination formwork for the side walls.

[0071] (3) Other sections and branch holes adopt I-beam assembled formwork, shaped steel formwork for arches, and large shaped steel formwork for side walls.

[0072] (4) Commer...

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Abstract

The invention relates to the field of cave excavation, and particularly relates to an excavating construction method for a special stratum cave. The method comprises the steps that one, construction instruments preparation and personnel configuration are conducted, and measuring sample releasing is conducted on a construction region; two, excavating and supporting are conducted on a small cave, excavating is conducted by adopting blasting or a tunnel boring machine, slags are timely discharged, the excavating length of each circulation is 0.5 m-0.7 m, and a steel arch frame and an anchoring net are timely adopted to perform supporting after the slags are completely discharged; three, the excavating and supporting of the upper portion of a middle pilot tunnel are conducted; four, the reverse expanding excavating of upper steps of a large cave is conducted; five, the excavating and supporting of a middle step of a large cave are conducted; six, the excavating and supporting a lower step(inverted arch) of the large cave are conducted; seven, the lining and backfilling of the inverted arch of the large cave are conducted. The method has the advantages of reliable excavating, less quantity of work and the like.

Description

technical field [0001] The invention relates to the field of civil air defense engineering, in particular to an excavation construction method for chambers in special formations. Background technique [0002] In the process of excavation and support for the command hall of the civil air defense command post, the basic design type is that the small passage chamber and the large chamber of the command hall intersect in the form of "ten". above the channel. In the process of expanding excavation and support from the passage small chamber to the command hall large chamber, and from the command hall reverse expansion and intersecting with the passage small chamber, under special geological conditions, once the construction method is improper, it is easy to cause landslides Wait for the situation out of control. Since our company has been engaged in the construction of civil air defense pits and tunnels for a long time, we have continuously summarized the results, and finally fo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21D13/02E21D11/00
CPCE21D11/00E21D13/00
Inventor 梅树强朱爱山汪宏兵周奎陈春和
Owner 浙江省隧道工程集团有限公司
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