The Method of Supporting Structural Units in Underground Space Using Steel Plate Jacking in Pilot Tunnel
A technology of supporting structure and underground space, applied in underground chambers, temporary shields, mining equipment, etc., can solve problems such as large disturbance of the bottom layer, inapplicability, and high requirements for construction equipment, so as to improve construction efficiency and jacking difficulty. Reduced, good compaction effect
Active Publication Date: 2020-12-29
BEIJING SHOUER ENG TECH
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Problems solved by technology
[0003] The purpose of the present invention is to provide a method of using steel plate jacking in the guide tunnel to construct the underground space support structure unit, so as to solve the problem that the large-volume steel pipe jacking construction has a large disturbance to the bottom layer, which is not suitable for projects with strict settlement control requirements; The jacking of volumetric steel pipes is more difficult and requires higher construction equipment; for the construction of underground space in water-rich strata, the technical problem that large-volume steel pipes cannot effectively seal and stop water
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[0029] In order to make the technical means, innovative features, goals and effects achieved by the present invention easy to understand, the present invention will be further described below.
[0030] The examples described here are specific specific implementations of the present invention, and are used to illustrate the concept of the present invention. They are all explanatory and exemplary, and should not be construed as limiting the implementation of the present invention and the scope of the present invention. In addition to the embodiments described here, those skilled in the art can also adopt other obvious technical solutions based on the claims of the application and the contents disclosed in the description, and these technical solutions include adopting any obvious changes made to the embodiments described here. Replacement and modified technical solutions.
[0031] The invention adopts steel plate jacking instead of the traditional steel pipe jacking form to form...
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The invention provides a method of steel plate jacking adopted to construct an underground space supporting structural unit in a pilot tunnel, and relates to the field of underground space construction. The method includes the steps that 1, preparatory work is carried out; 2, the pilot tunnel is constructed near the outside of an underground space to be built; 3, top steel plates are jacked for construction; 4, side steel plates are jacked for construction; and 5, bottom steel plates are jacked for construction. According to the method, the jacking difficulty is remarkably lowered, during jacking of the steel plates, the good compaction effect on the soil mass is achieved, effective water plugging and sealing can be realized, and a formed underground large-space protecting structure has functions of supporting and water stopping; steel plate units are not be greatly deviated in the jacking process, and the construction efficiency is improved; and requirements for the space of the pilottunnel are small, and jacking of the steel plate units has less dependence on jacking equipment.
Description
technical field [0001] The invention relates to the field of underground space construction, in particular to a method for constructing an underground space support structure unit by using steel plates to jack into a guide tunnel. Background technique [0002] The new pipe curtain construction method and micro-shield are one of the commonly used construction methods for the construction of underground spaces in weak surrounding rocks in my country. By pushing a series of large-volume steel pipes (usually with a diameter of more than 1.8m) into the soil, and directly The outer contour of the structure is applied in the pipe row formed by the large-volume steel pipes, thus completing the construction of the underground structure. However, when this method is used for the construction of large-volume steel pipes, the ground disturbance is relatively large, and it cannot be fully applied to projects with strict requirements for settlement control. Moreover, it is difficult to ja...
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IPC IPC(8): E21D11/15E21D19/00E21D13/02
CPCE21D11/15E21D13/00E21D19/00
Inventor 杨积凯吴大胜
Owner BEIJING SHOUER ENG TECH