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Fractured rock mass stress and seepage coupled testing system and method

A testing system, a technology for fractured rock mass, which is used in measurement devices, permeability/surface area analysis, suspension and porous material analysis, etc. , to achieve the effect of eliminating the deviation of test results

Inactive Publication Date: 2015-01-28
CHINA UNIV OF MINING & TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] Technical problem: The purpose of this invention is to provide a cracked rock mass stress and seepage coupling test system and method to solve the problems that existing instruments and equipment do not have high permeability for a long time, simultaneous loading and seepage, and two-way loading does not affect each other

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  • Fractured rock mass stress and seepage coupled testing system and method
  • Fractured rock mass stress and seepage coupled testing system and method
  • Fractured rock mass stress and seepage coupled testing system and method

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Embodiment Construction

[0035] An example of the present invention will be further described below in conjunction with the accompanying drawings:

[0036] The test system includes: seepage experiment device, stress and displacement loading system and data acquisition system; seepage experiment device is connected with stress and displacement loading system, the electronic control data of seepage experiment device and stress and displacement loading system are sent to the data acquisition system, according to the data The acquisition system will collect electrical control data to control the seepage experiment device and the stress and displacement loading system.

[0037] The said seepage experiment device includes: filter valve 1-1, electric pressure test pump 1-2, overflow valve 1-3, reversing valve 1-4, flow limiting valve 1-5, accumulator 1-6, Flow sensor 1-7, pressure sensor 1-8, stop valve 1-9, water storage tank 1-10, water pipe 1-11, permeameter device 1-12, filtrate valve 1-13 and expansion inter...

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Abstract

The invention discloses a fractured rock mass stress and seepage coupled testing system and a fractured rock mass stress and seepage coupled testing method, belonging to testing systems and methods for fractured rock mass or pore medium seepage of rock and soil and geology. The system is divided into three parts, namely a seepage experiment device, a stress and displacement loading system and a data acquisition system, wherein the seepage experiment device can load square fractured rock mass or precast concrete crack samples, and a water pump provides power to form a test loop seepage channel; a control valve, an energy accumulator, a filtering device and a pressure and flow sensor are arranged on a water inlet / outlet pipe connected with the seepage experiment device; the stress and displacement loading system is equipped with a hydraulic cylinder driven by an oil pump and a trapezoidal screw; the hydraulic cylinder and the trapezoidal screw are matched with the pressure and flow sensor, so that the pressure and displacement can be accurately regulated and controlled; an unrelated three-degree-of-freedom sliding system is formed by a flange bearing, a cylindrical pin and a small ball, so that loading is not interfered by friction and other adverse factors; and moreover, all data in the experimental process is acquired and recorded by the data acquisition system in real time.

Description

Technical field [0001] The invention relates to a test system and method for coupling stress and seepage of fractured rock mass, and is particularly suitable for testing system and method for seepage of fractured rock mass or porous medium of rock soil and geology. Background technique [0002] The seepage characteristics of underground fissures or porous rock masses have an important influence on the design and safe operation of underground projects. Under natural conditions, the permeability of rock and soil with cracks or pores is closely related to the underground stress environment. Studies have shown that a small change in the crack width will cause a huge change in the seepage flow of the crack, and the crack opening is controlled by the stress on the crack surface. Seepage pressure can also affect the effective stress of the fracture surface. In order to accurately analyze the seepage problem of a rock mass with fractures or pores, the coupling effect of stress and seepa...

Claims

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Application Information

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IPC IPC(8): G01N15/08
Inventor 刘卫群宋良桑盛梁浩楠李玉寿马天然移峥峰
Owner CHINA UNIV OF MINING & TECH
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