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Excavating construction method for special stratum cave

A construction method and chamber technology, which are used in underground chambers, earthwork drilling, wellbore lining, etc., can solve problems such as large engineering volume, weak excavation support, and easy collapse.

Active Publication Date: 2019-03-19
浙江省隧道工程集团有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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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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  • Excavating construction method for special stratum cave
  • Excavating construction method for special stratum cave
  • Excavating construction method for special stratum cave

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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 a large chamber hall.

[0068] The overall construction plan of the hall support

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

[0070] (2) The hall adopts full-frame scaffolding as the intermediate support. The wall 20# industrial steel column and the arch part 12# industrial steel arch diagram form the main body of the supporting system, and the joint force is achieved through screw jacks. The arch of the formwork adopts a shaped steel formwork and a large steel-wood combined formwork for the side walls.

[0071] (3) I-steel assembled formwork for other sections and support holes, shaped steel formwork for arches, and large shaped steel formwork for side walls.

[0072] (4) Commercia...

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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 and construction method for a chamber in a special stratum. Background technique [0002] In the process of excavation and support of the command hall of the civil air defense command post, the basic design type is that the small channel room and the large room of the command hall intersect in the form of "cross". The command hall must be crossed due to the large cross-section design. On the channel. In the process of expanding and supporting from the small channel room to the large room of the command hall, and forming the intersection of the reverse expansion of the command hall and the small channel room, under special geological conditions, once the construction method is improper, it is easy to cause a collapse Wait for the out of control situation. Our company has been engaged in the construction of civil air defense pit tunnels for a long time, and c...

Claims

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Application Information

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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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