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Model test device for shield-tail grouting slurry condensing and duct piece floating processes

A model test device and grouting technology, which is applied in the investigation stage/state change, etc., can solve the problems that the segment cannot be simulated to float up

Pending Publication Date: 2018-11-23
CHINA RAILWAY 15TH CONSTR BUREAU GRP +2
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  • Abstract
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  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to provide a model test device for the coagulation of shield tail grouting slurry and the floating process of segments, so as to solve the problem that the existing technology cannot simulate the floating of segments during the process of grouting and coagulation

Method used

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  • Model test device for shield-tail grouting slurry condensing and duct piece floating processes
  • Model test device for shield-tail grouting slurry condensing and duct piece floating processes

Examples

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Embodiment Construction

[0020] Example of a shield tail grouting slurry coagulation and segment uplift process model test device Figure 1~2 Shown: a model box 7 including an inner cavity for filling model soil, and the model box 7 is fixedly connected to the model box support frame 8 by bolts. The inner wall of the model box is pasted with a double-layer anti-slip film. In this embodiment, the anti-slip film is made of Teflon film, and graphite is filled between the two Teflon films to reduce the gap between the two-layer Teflon film. friction force, the top of the model box is connected with a steel pipe sheet model 3 through a detachable fixed structure, the detachable fixed structure includes locking bolts with the axis extending in the up and down direction and a model box threaded hole set on the model box, the steel pipe sheet model 3 The upper end of the model box 7 is fixed on the locking bolts that are installed in the threaded holes of the model box, and the lower peripheral surface of the...

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Abstract

The invention relates to a model test device for shield-tail grouting slurry condensing and duct piece floating processes, and the model test device comprises a model box for bearing and filling modelsoil. The model test device is characterized in that the top end of the model box is detachably connected with a steel duct piece model; the bottom end of the model box is provided with a loading plate assembly; the loading plate assembly comprises a loading plate, a spring connected with the loading plate and a counter-force beam fixedly connected with the spring; the loading plate, the spring and the counter-force beam are sequentially arranged from top to bottom; the upper side plate surface of the loading plate is in contact with the model soil; and the model test device further comprisesa pressure applying mechanism for applying pressure to the counter-force beam. The model test device solves the problem that the dust piece floats as the dust piece is separated from the shield tailand then is syncrhously grouted in a process of stimulating a shield tunneling machine tunneling process in the prior art.

Description

technical field [0001] The invention relates to a model test device for the coagulation of shield tail grouting slurry and the floating process of segments. Background technique [0002] In recent years, with the continuous development of the urban subway business, the subway construction technology has also been continuously improved. However, there are relatively few studies on the grout setting process after shield tunneling grouting and the influence of different geological conditions on the grout setting strength. The Chinese patent with the publication number CN205643289U discloses "A Simultaneous Grouting Simulation Test System for Shield Tunnel". The Simultaneous Grouting Simulation Test System includes a model box for filling model soil. The pulling device is provided with a grouting pipe connected to the inside of the model box. The synchronous grouting simulation test system also includes a reaction frame, and a jack is arranged on the reaction frame. [0003] D...

Claims

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Application Information

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IPC IPC(8): G01N25/12
CPCG01N25/12
Inventor 李明宇赵世永刘玉豪郭城林庞磊崔鑫磊孙立光靳军伟魏艳卿曾力刘建伟马友利马世举黄应华
Owner CHINA RAILWAY 15TH CONSTR BUREAU GRP
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