A test device for rock breaking under the coupled action of static load and hydraulic pressure and its application method
A test method and loading device technology, applied in the direction of applying stable tension/pressure to test material strength, test machinability, etc., can solve problems such as inability to fully reflect the mechanical state of deep rock mass, achieve low cost, simple operation, Mechanism Simple Effect
Active Publication Date: 2019-04-02
CENT SOUTH UNIV
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Problems solved by technology
However, there is still a big difference between the actual mechanical properties of the rock mass encountered in deep engineering and the mechanical properties of similar materials, so the mechanical tests conducted with similar materials cannot fully reflect the proper mechanical state of the deep rock mass
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[0037] A test device and method for rock breaking by coupling static load and hydraulic pressure of the present invention will be further described below in conjunction with the accompanying drawings and embodiments.
[0038] A test device for rock breaking under the coupling effect of static load and hydraulic pressure. 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, inclination 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.
[0039] 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...
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Abstract
The invention discloses a testing device for breaking rock with the coupling effect of a static load and water pressure and a using method of the testing device. A fractured rock mass sample is put between a testing table and a pressure head, and the static load is applied to the fractured rock mass sample through the pressure head. The inner end face of a metal connector is buried inside a fracture of the fractured rock mass sample, and a manual booster pump and the metal connector are connected through a connecting hose. A pressure gauge is installed on the connecting hose; large-dimension strain gages are bonded to the upper side and the lower side in the direction parallel to the fracture of the fractured rock mass sample and are connected with a strain box, and the strain box is connected into a computer; meanwhile, the pressure gauge is connected with the computer through an analog-digital converter, and the pressure head is directly connected into the computer. The testing device for breaking rock with the coupling effect of the static load and water pressure and the using method of the testing device are used for researching the strength and stability of deep fractured rock masses under the action of the water pressure. The testing device is simple in structure, easy to process and convenient to operate.
Description
technical field [0001] The invention relates to a rock-breaking test device, in particular to a rock-breaking test device under the coupled action of static load and hydraulic pressure. The invention also relates to a method for using the rock breaking test device coupled with static load and hydraulic pressure. Background technique [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 engineering such as mining and tunnel excavation. [0003] In addition, there is a large amount of groundwater in the excavation of deep rock mass, which greatly...
Claims
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IPC IPC(8): G01N3/12G01N3/58
CPCG01N3/12G01N3/58
Inventor 曹平郝瑞卿靳瑾王华董力玮
Owner CENT SOUTH UNIV