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Rock creep-seepage coupling test system

A test system and creep technology, applied in the direction of permeability/surface area analysis, using stable tension/pressure to test material strength, measuring devices, etc., can solve the problem that seepage and creep laws are rarely involved and hinder the development of rock creep theory and other issues to achieve the effect of ensuring accuracy and reliability

Inactive Publication Date: 2015-05-06
LIAONING TECHNICAL UNIVERSITY
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Problems solved by technology

[0003] The test is an important means to study the mechanical properties of rocks. The previous studies mainly focused on the seepage and creep laws of coal rocks before they were destroyed, but rarely involved the seepage and creep laws of coal rocks after the peak. The reason is the limitations of existing test equipment, which also hinders the further development of rock creep theory

Method used

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  • Rock creep-seepage coupling test system
  • Rock creep-seepage coupling test system

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Embodiment 1

[0013] 1 Test equipment and equipment

[0014] 1.1 Introduction to the test system

[0015] Rock creep-seepage coupling test system, see figure 1 , Including water pump, six-way valve, stainless steel high-pressure pipe, pressure gauge, surge tank, sliding piston, cylinder, test piece, strain gauge, strain gauge, backing plate, displacement sensor and flow meter.

[0016] The six-way valve includes six-way valve A, six-way valve B, six-way valve C and six-way valve D. Pressure gauges include pressure gauge A, pressure gauge B, and pressure gauge C. The surge tank includes surge tank A and voltage regulator. Tank B and surge tank C.

[0017] By adjusting the switch of six-way valve A, confining pressure loading, axial pressure loading and pore water pressure loading can be realized. The strain gauge can be used to measure the deformation of the coal before failure, the displacement sensor can be used to measure the deformation of the coal after failure, and the flow meter can measure ...

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Abstract

The invention discloses a rock creep-seepage coupling test system comprising a sliding piston, a cylinder body, a test piece, a water pump, a deformeter, an air pressure controller and a strain gage, wherein the test piece is installed above the cylinder body, the connecting site of the cylinder body and the test piece is communicated, the water pump is connected with water inlets of the cylinder body and the test piece through a water pipe and a pressure gauge, a water inlet is formed in the middle of the cylinder body, and the test piece is applied with a confining pressure by water; the strain gage is fixed in the middle of the test piece by glue, a hole is formed in the front end of the cylinder body, and a lead stretching out from the deformeter and the strain gage is connected via the hole; the sliding piston is connected with the test piece through a pressure head, the water inlet of the sliding piston is connected with the test piece through a water pipe, and the other end of the sliding piston is connected with a pressure stabilizing tank and the air pressure controller through a valve; according to the device, water is filled from the water inlet in the cylinder body to propel the sliding piston to apply an axial pressure. The rock creep-seepage coupling test system can be used for ensuring an accurate and reliable experimental result.

Description

Technical field [0001] The invention relates to the technical field of geotechnical engineering, in particular to a rock creep-seepage coupling test system. Background technique [0002] The creep of rock is a very important mechanical property of rock. With the development of my country's economy and industry, large-scale rock engineering is also facing more and more complex situations, so the research on the rheological properties of rock under complex conditions is also Is becoming more and more important. Similarly, the mining of coal and rock will also encounter the same problem. Under long-term static load, the coal and rock will gradually deform and create cracks, causing groundwater to seep out. In coal mining, the problem of coal and rock mass creep and the associated groundwater infiltration problem has been an important issue of great concern in recent years. After a long period of creep, the roof sinks, causing the supporting coal pillars to gradually deform and yiel...

Claims

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Application Information

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IPC IPC(8): G01N3/12G01N15/08
Inventor 何峰唐治王振伟董子贤贾渊张春会于永江
Owner LIAONING TECHNICAL UNIVERSITY
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