Slurry mixing method for synchronous double-liquid grouting of shield tunnel
A technology of double-liquid grouting and shield method, which is applied in tunnels, tunnel linings, chemical instruments and methods, etc., can solve the problems of low construction efficiency, large construction volume and high cost, and reduce labor intensity and construction cost. The effect of improving construction efficiency and reducing performance loss
Active Publication Date: 2022-02-18
CCCC TUNNEL ENG
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Problems solved by technology
[0004] 1. The pipeline transportation distance of the well-mixed A slurry is long, and with the excavation of the shield machine, there are problems of low construction efficiency and high pipeline failure rate, and the homogeneity of cement-based materials is likely to be reduced due to long-distance pipeline transportation;
[0005] 2. If the open-cut section from the starting working shaft to the ground has not been constructed, and the mortar truck transporting A slurry cannot enter the tunnel through the existing road, the mixed A slurry needs to be vertically transported up and down through the starting working shaft of the shield tunnel into the tunnel. Large amount of construction and high cost
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[0036] In order to make the above-mentioned purpose, features and advantages of the present application more obvious and understandable, the specific implementation manners of the present application will be described in detail below in conjunction with the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the application. However, the present application can be implemented in many other ways different from those described here, and those skilled in the art can make similar improvements without departing from the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below.
[0037] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", " Back", "Left", "Right", "Vertical", "Horizontal", "Top", "...
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The invention discloses a slurry mixing method for synchronous double-liquid grouting of a shield tunnel. The slurry mixing method comprises the following steps: S1, carrying out equipment installation; S2, mixing the slurry A; and S3, mixing the slurry A and the slurry B. Through a mixing system installed on the tail trolley, short-distance transportation of the grout A is achieved, the performance loss of the grout A before grouting is reduced, and the grouting quality is guaranteed; meanwhile, the construction amount of a pipeline is greatly reduced, the labor intensity and the construction cost are reduced, and the construction efficiency is effectively improved.
Description
technical field [0001] The invention belongs to the technical field of grout mixing A, and in particular relates to a grout mixing method for synchronous double-liquid grouting in shield tunnels. Background technique [0002] During shield excavation, because the outer diameter of the shield cutter head is larger than that of the lining segment, and the shield shell has a certain thickness, in addition, there are phenomena such as over-excavation during the excavation process, and the segment is separated from the shield tail. Afterwards, there will be an annular gap between the segment and the formation, and synchronous grouting technology is usually used to fill the shield tail gap in actual shield tunneling engineering. At present, the commonly used grouting grouts in shield tunnel construction can be roughly divided into two types, namely single-fluid grouting materials and double-fluid grouting materials. Double slurry is to pump A and B slurry from two pipelines, mix ...
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Login to View More IPC IPC(8): E21D9/06E21D11/10B28C3/00B28C7/04B28C9/02
CPCE21D9/0607E21D11/10B28C3/00B28C7/0481B28C9/02Y02W30/91
Inventor 勾常春何剑光吕计瑞李辉曾德成赵振洲忽慧涛孙晨光孙伟
Owner CCCC TUNNEL ENG