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Device and method for testing soil structure under the action of dynamic change of underground confined water level

A dynamic change and test device technology, which is applied in the fields of underground space engineering, environmental engineering, traffic engineering, and civil engineering, can solve problems such as dynamic testing and reliable analysis of soil structural changes, and achieve the effect of ensuring long-term safety

Active Publication Date: 2015-09-09
SOUTHEAST UNIV
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Problems solved by technology

[0005] Technical problem: The present invention provides a soil structural testing device and method under the action of dynamic changes in the underground confined water level, which solves the problem that the prior art cannot perform dynamic testing and reliable analysis on soil structural changes caused by changes in the underground confined water level technical problems

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  • Device and method for testing soil structure under the action of dynamic change of underground confined water level
  • Device and method for testing soil structure under the action of dynamic change of underground confined water level
  • Device and method for testing soil structure under the action of dynamic change of underground confined water level

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Embodiment Construction

[0026] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0027] The device and method for testing soil structure under the action of dynamic changes of underground pressurized water level of the present invention include a calibration tank 1 , a pressurized piston 2 , a pressurized water control system 3 and a measurement system 4 . Such as figure 1 As shown, the calibration tank 1 is made of high-strength insulating plastic into a cylinder (Φ1000mm*1250mm); the tank is layered with cohesive soil layer and sandy soil layer (second-fourth layer) to simulate the formation of an underground aquifer structure There are annular water inlet (drainage) pipes at different heights inside the tank; there are 3 annular steel retaining rings 5 ​​outside the tank; installation holes 11 are provided at different heights along the side wall of the calibration tank 1, and the installation holes 11 are used as the calibration...

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Abstract

The invention discloses a device and a method for testing soil structure characteristics under action of dynamic change of underground pressure water head. The testing system comprises a calibration tank, a loading device, a confined water control system and a measurement system and also comprises a corresponding data analysis method, wherein a cohesive soil layer and a sandy soil layer are arranged in the calibration tank in a layered mode so as to simulate to form an underground water-bearing structure; the confined water control system is formed by connecting a water tank which can be freely controlled to lift and a water inlet and outlet pipe; the measurement system comprises an electrical resistivity testing module, a soil deformation testing module, a water head pressure measuring tube, a micro pore pressure gage and a micro static penetrometer, and the electrical resistivity testing module consists of testing electrodes in the circular and vertical directions. The calibration tank serves as a bearing device and is matched with other several systems, so that the change of soil structure characteristics under complex conditions of dynamic change of the underground pressure water head can be dynamically tested, the influence on the soil characteristics is further analyzed, and basic data is provided for evaluating the structural behavior and health state of underground construction under complex conditions.

Description

technical field [0001] The invention belongs to the fields of civil engineering, traffic engineering, underground space engineering and environmental engineering, and relates to a soil structural testing device and method under the action of dynamic changes of underground confined water levels. Background technique [0002] The development and utilization of urban underground space is an important way to solve problems such as urban space congestion, traffic jams, environmental degradation, and lack of land resources in the 21st century. In recent years, in my country's most economically developed coastal areas along the river, there has been an upsurge in the development of underground space. The underground complex formed by the combination of complex underground streets, underground cities, and underground rail transit, and large-scale underground water supply, energy systems, drainage and sewage treatment. A large number of underground municipal facilities such as undergr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N33/24
Inventor 童立元王占生张明飞郑灿政刘松玉吴义阳
Owner SOUTHEAST UNIV
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