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Simulation test system for soil pressure balance shielding screw conveyer

A simulation test system and shield spiral technology, applied in earth square drilling, mining equipment, tunnels, etc., can solve problems limited to excavation rate, uncut slag research, etc.

Inactive Publication Date: 2012-11-07
TONGJI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the special research on the screw conveyor in the earth pressure balance shield in the above-mentioned invention is only limited to the excavation rate, and the function of balancing the water and soil pressure in front of the cut muck while being transported is not studied.

Method used

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  • Simulation test system for soil pressure balance shielding screw conveyer

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Embodiment Construction

[0020] Below in conjunction with the accompanying drawings, the features of the present invention and other related features will be described in further detail by embodiments, so as to facilitate the understanding of those skilled in the same industry:

[0021] like figure 1 As shown, the symbols respectively indicate: sleeve 1, screw 2, motor 3, electric control box 4, excavation gate 5, dynamic resistance strain gauge 6, data terminal 7, soil box body 8, top cover 9, water inlet 10, drainage Port 11, digital pressure gauge 12, stabilizing pump 13, frequency converter 14, pressure gauge control switch 15, check valve 16, stabilizing air bag 17, water tank 18, pressure sensor group P1, P2, P3, P4, P5; pressure Sensors V1, V2; globe valves F1, F2, F3.

[0022] see figure 1 , The present invention includes a stabilizing pump 13, a soil tank, a screw conveyor and a corresponding data acquisition system.

[0023] The soil box includes a soil box body 8 and a top cover 9 . The...

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Abstract

The invention relates to a simulation test device applied in the field of urban subway engineering, in particular to a simulation test system for a soil pressure balance shielding screw conveyer. The simulation test system comprises a screw conveyer consisting of a sleeve, screw arranged in the sleeve and a motor for driving the screw, wherein the end part of the screw passes through a soil box. The simulation test system is characterized in that the end part of the screw is arranged in the center of the bottom of the soil box; and the top of the soil box is connected with a water box througha stabilized pressure pump. The simulation test system has the advantages that the stabilized pressure pump takes water as a medium to provide stable water pressure for soil layers and dregs in the soil box, so that the simulation test system can simulate the soil and water pressure supported by the bottom of the screw conveyer when a shield is positioned in water-rich strata of different types or passes through rivers for tunneling.

Description

technical field [0001] The invention relates to a simulation test device applied in the field of urban subway engineering, in particular to an earth pressure balance shield screw conveyor simulation test system. Background technique [0002] The earth pressure balance shield balances the earth pressure and water pressure of the excavation surface by applying the pressure of the ballast soil in the soil bin, thereby maintaining the stability of the excavation surface and preventing the ground subsidence, while the working pressure in the soil bin is controlled by The ballast soil is maintained in a way that the pressure in the screw conveyor gradually decreases, which is also the key to the construction of the earth pressure balance shield. [0003] Through the literature search of the prior art, it was found that the invention patent of Shanghai Tunnel Engineering Co., Ltd. (authorized announcement number CN 100343650C): a large-scale shield tunneling simulation test platfo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21D9/12
Inventor 周冠南周顺华余儿忠代仁平王春凯
Owner TONGJI UNIV