Rectangular shield synchronous grouting test equipment

Abstract

The invention discloses quasi-rectangular shield synchronous grouting test equipment comprising a simulated segment, a simulated shield shell and a simulated shield tail. A jack pull-back device is arranged between the first end of the simulated shield shell and the second end of the simulated segment. The simulated shield tail is connected with the second end of the simulated shield shell. The tail end of the simulated shield tail is provided with a grouting hole. The external surface of the simulated segment is provided with a soil pressure sensor, and the internal part is provided with a camera. The soil pressure sensor and the camera are used for detecting the slurry flow and pressure conducting process in the grouting process of the simulated shield tail. The cross section of the simulated shield shell and the simulated shield tail is quasi-rectangular so that the grouting process of a quasi-rectangular shield can be effectively simulated by the test equipment. A grouting pipe is arranged in the internal part of the simulated shield shell so that special-shaped bumps generated on the simulated shield tail and the simulated shield shell caused by the fact that the grouting pipe is arranged at the external side of the simulated shield shell can be avoided, and thus influence of the special-shaped bumps on the result of the grouting test can be prevented.

Description

technical field [0001] The invention belongs to the field of tunnel construction, in particular to a similar rectangular shield synchronous grouting test equipment. Background technique [0002] There are many ways to study the construction technology of underground tunnels, such as theoretical analysis, etc., and the test method is also a very important scientific method. The characteristics of the body and the interaction relationship between the soil and the machine. At present, some enterprises, scientific research institutions and universities at home and abroad have established relevant laboratories to design and build corresponding simulation test benches to carry out this specific engineering simulation test. For example, Shanghai Tunnel Engineering Co., Ltd. has developed a large-scale shield tunneling simulation test platform. To carry out the construction test of the shield tunneling machine. [0003] During the construction of underground tunnels using the shie...

AI Technical Summary

Problems solved by technology

For the grouting simulation device, we found the Chinese patent ZL200810162251.4 "A New Type of Grouting Simulation Device", which mainly includes an air compressor, a pressure regulating valve, a pressure vessel, a test mold, etc. The slurry is placed in the pressure vessel, and the top of the pressure vessel is connected to the air compressor. The air is pressed into the pressure vessel through the air compressor to force the slurry out and inject it into the test mold. During the simulated test process, the grouting pressure can be adjusted through the pressure regulating valve. , the grouting simulator can only simulate the process of compaction grouting and splitting grouting of various soils in the room

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