Testing device and testing method for simulating hydrodynamic pressure action in rock fracture

A technology of hydrodynamic pressure and test device, which is applied to the test device for simulating the action of hydrodynamic pressure in rock fissures, the dynamic water pressure test of fissured rock mass and the research field of fluid-solid coupling mechanism of fissured rock mass, which can solve the problem of failing to measure the fissures. Problems such as flow speed and dynamic water pressure, failure to ensure that the test water flow directly passes through the cracks, etc., achieve the effects of low cost, simple mechanism and simple test device

Inactive Publication Date: 2015-07-01
CENT SOUTH UNIV
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Problems solved by technology

[0004] Limited by the test conditions, the current research on fractured rock mass under the action of water mainly focuses on the influence of hydrostatic pressure on the strength of fractured rock mass, and few scholars have studied the influence of hydrodynamic pressure on the strength of fractured rock ma

Method used

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  • Testing device and testing method for simulating hydrodynamic pressure action in rock fracture
  • Testing device and testing method for simulating hydrodynamic pressure action in rock fracture
  • Testing device and testing method for simulating hydrodynamic pressure action in rock fracture

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Embodiment Construction

[0033] A test device and method for simulating hydrodynamic pressure in rock fissures of the present invention will be further described below in conjunction with the accompanying drawings and examples.

[0034] See figure 1 A test device for simulating the action of hydrodynamic pressure in rock fissures. In the laboratory, the information obtained from the on-site inspection of the fractured rock mass is analyzed, and the distribution characteristics of the cracks in the rock mass are determined by analyzing the occurrence, dip and length of the cracks. According to the distribution characteristics of rock mass fissures, the simulation information such as the inclination angle, length, and number of fissures of the simulated rock samples in the laboratory is determined.

[0035] According to the on-site water conservancy investigation report, the environmental water conservancy conditions of the fractured rock mass are determined, so as to determine the simulated water flow...

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Abstract

The invention discloses a testing device and a testing method for simulating hydrodynamic pressure action in rock fracture. A rock sample with a crack is placed into a testing water tank, the position of the rock sample is adjusted to enable a crack to directly face a rectangular hole; testing water flows are pumped into the testing water tank to be subjected to hydrodynamic pressure testing through a water injection pipe by a high-pressure water supply pump; a pressure meter, a pressure control valve and a pressure release valve are arranged on the testing water tank for controlling the flow pressure and the flow rate of the inside of the testing water tank; and an anchorage point is arranged on the testing water tank and is connected with a displacement meter and the rock sample, a pressure sensor, a flow sensor and the displacement meter are arranged on the water injection pipe and are used for transmitting the acquired data to a data acquisition instrument and are connected with a computer, and the computer is used for recording the testing data such as pressure, flow rate, the change of the diameter of the rock sample and the like. The structure is simple, the processing operation is easy and the operation is convenient.

Description

technical field [0001] The invention belongs to the technical field of rock mechanics tests, relates to a hydrodynamic pressure test of a fractured rock mass and a study on the fluid-solid coupling mechanism of a fractured rock mass, and deeply studies the mechanical properties of a deep fractured rock mass under hydrodynamic pressure. Specifically, it particularly relates to a test device and method for simulating the action of hydrodynamic pressure in rock fissures. technical background [0002] In many geotechnical engineering such as mining and tunnel excavation, there are a large number of deep rock mechanics engineering. Human or natural factors such as excavation change the stress balance state of the deep rock mass, release the elastic strain energy of the deep rock mass, expand the original micro-cracks in the rock mass, and make adjacent cracks penetrate, affecting the stability of the deep rock mass , so that there are potential safety hazards in geotechnical eng...

Claims

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Application Information

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IPC IPC(8): G01N3/00
Inventor 曹平郝瑞卿董立伟靳瑾李瑞超
Owner CENT SOUTH UNIV
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