Super-close-distance grouting method and grouting device for shield construction
A technology of ultra-short-distance, grouting device, applied in vertical shaft equipment, earth-moving drilling, wellbore lining, etc., can solve the problems of large surface subsidence and insufficient simultaneous grouting, and achieve the purpose of preventing surface subsidence, small impact of cross construction, Easy to disassemble
Inactive Publication Date: 2018-01-12
CHINA RAILWAY SIXTH GRP CO LTD
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[0006] The purpose of the present invention is to provide an ultra-short-distance grouting method and a grouting device for shield tunneling to solve the technical problems of large surface subsidence and insufficient synchronous grouting in the prior art. Safe, continuous, efficient and high-quality construction
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[0022] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.
[0023] It should be noted that when an element is referred to as being “fixed” or “disposed on” another element, it may be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.
[0024] It is to be understood that the terms "length", "width", "top", "bottom", "front", "rear", "left", "right", "vertical", "horizontal", "top" , "bottom", "inner", "outer" and other indicated orientations...
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The invention provides a super-close-distance grouting method and grouting device for shield construction, and belongs to the technical field of shield method tunnel construction. The grouting deviceincludes a shield machine, a synchronous grouting device and a deep-hole grouting device. The synchronous grouting device is used for filling a building gap between the shield machine and a pipe piece. The deep-hole grouting device is located at the rear part of the shield machine. The grouting method comprises the steps that a deep hole is punched in the pipe piece and grouted, the deep hole is close to the synchronous grouting device, a grouting pipe penetrates into the deep part of a soil body, and a deep stratum around a tunnel is strengthened and stabilized. The grouting device includingthe synchronous grouting device and the deep-hole grouting device is also provided. Under the common action of synchronous grouting and deep grouting of the shield machine, the problem of ground subsidence is effectively solved, a shield tail brush is easily broken down caused by high grouting pressure, so that a measure of breakdown preventing of the shield tail brush is adopted. The super close-distance grouting method can solve the difficult problem that ground surface subsidence cannot be completely controlled through ordinary secondary grouting in shield method tunnel construction and hasthe advantages that disassembly and assembly is simple, using is convenient, influence of crossed construction is little, and stratum subsidence is prevented.
Description
technical field [0001] The invention belongs to the technical field of shield tunnel construction, and more specifically relates to an ultra-short-distance grouting device and a construction method for shield construction. Background technique [0002] At present, the shield tunneling method has been widely used in subway construction, among which the closed earth pressure balance shield machine is the most used. The shield tunneling method is a method in which a shield machine is used to excavate, drive, and perform lining operations to construct a tunnel. The shield machine consists of three parts: cutting ring, support ring and shield tail. The purpose of shield tunneling control is to ensure the stability of the excavation surface while constructing the tunnel structure, maintaining the tunnel alignment, and filling the gaps at the end of the shield early. Excavation control, primary lining, linear control and grouting constitute the four aspects of shield tunneling con...
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IPC IPC(8): E21D9/06E21D11/10
Inventor 王家亮王迎新田班虎刘俊洋何伟杜晓红付小锋
Owner CHINA RAILWAY SIXTH GRP CO LTD