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Low temperature-seepage-force coupling effect tunnel model test system and test method

A technology of tunnel model and test system, applied in the field of geotechnical engineering

Inactive Publication Date: 2016-12-21
SHENYANG POLYTECHNIC UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Understand the tunnel model loading test equipment that has been publicly introduced, and there are few public reports about the small-pitch tunnel model test system and related test methods under the action of environmental erosion (low temperature-seepage-force coupling)

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Embodiment Construction

[0032] In order to make the technical solutions and advantages of the present invention more clear, the technical solutions in the embodiments of the present invention are clearly and completely described below in conjunction with the drawings in the embodiments of the present invention:

[0033] Figure 1-Figure 3 As shown, the main loading frame 1 of the steel structure is related to the bottom pressure platform, and the bottom pressure platform 1-12 is connected with the pressure frames 1-8 on both sides, and the 1-8 is connected with the working The upper beam 1-7 of the beam is welded, the bottom pressure platform and 1-8 are connected with the front and rear liftable automatic baffles 1-10, and the beam 1-7 of the I-beam is connected with the synchronous jacking jack 1-10 6 are connected, and the jack 1-6 is connected with the pressure transmission I-beam 1-9.

[0034] Such as Figure 1-Figure 3 As shown, the main loading part 1 of the steel structure also includes a sta...

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Abstract

The invention relates to a low temperature-seepage-force coupling effect tunnel model test system and a test method. The test system mainly comprises a steel structure main loading frame portion, a seepage portion, a low-temperature refrigeration equipment portion and an automatic monitoring-feedback analysis portion. An overall counterforce frame is formed by welding H section steel, jacks used for simulating vertical loads are respectively arranged at two sides of the upper part of a model, a load is applied through pressure transmitting I-steel, and openable baffle plates are arranged in front and back. A stainless steel water tank is arranged on the steel structure main loading frame, the whole body is composed of a hydraulic pump, a water storage tank, a stop valve and the like, and the lower part of the stainless steel water tank is provided with a hole. Variations in the temperature of a cavity are realized by adopting an evaporator with a special form. Data real-time acquisition and feedback analysis are carried out based on technologies such as automatic monitoring and wireless transmission technologies and an intelligent optimization algorithm. Similar materials are proportioned according to actual rock physical and mechanical indexes, the similar materials are loaded into the overall loading frame, a vertical load is applied, and excavation for a tunnel cavity is carried out.

Description

technical field [0001] The invention relates to a geomechanics model loading test machine and a test method in the field of geotechnical engineering, in particular to a tunnel model load test machine and a test method under complex environment erosion (low temperature-seepage-force coupling) conditions. Background technique [0002] During the construction of underground tunnels in cold (or seasonal) water-rich areas, the stress field of the surrounding rock undergoes secondary distribution under the excavation disturbance, and cracks appear. At the same time, it is also affected by the freeze-thaw cycle. Under the combined action of these complex factors It has a significant impact on the safety and stability of geotechnical engineering. The evaluation and prediction of such problems requires in-depth exploration and research on the mechanical and damage characteristics of rocks under complex environmental erosion conditions. At the same time, the tunnel model test is base...

Claims

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Application Information

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IPC IPC(8): G01M99/00
CPCG01M99/007
Inventor 王军祥陈四利
Owner SHENYANG POLYTECHNIC UNIV
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