Indoor experiment system and method for dynamic stability of cavern surrounding rock under action of stress waves
A technology of dynamic stability and experimental system, applied in the direction of applying stable tension/pressure to test material strength, strength characteristics, preparation of test samples, etc., can solve the problem that the influence of ground stress is difficult to consider
Inactive Publication Date: 2020-10-30
SOUTHEAST UNIV
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Problems solved by technology
Existing mechanical response test devices for jointed caverns are limited to static, and the influence of ground stress is difficult to consider
Method used
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[0028] The present invention will be further described below in conjunction with the drawings.
[0029] As attached figure 1 , 2 As shown, an indoor experimental system for dynamic stability of cavern surrounding rock under the action of stress waves, the system includes a dynamic loading unit 001, an incident plate 002, a rock cavern simulation unit 003, a transmission plate 004, and an energy absorption Unit 005, an incident plate 002 is provided between the dynamic loading unit 001 and the rock cavern simulation unit 003, and a transmission plate 004 is provided between the rock cave simulation unit 003 and the energy absorption unit 005 The system further includes a ground stress simulation unit 006, a visual monitoring unit 007, and a data monitoring acquisition unit 008. The rock cavern simulation unit 003 is provided with the ground stress simulation unit 006 on both sides of the front and rear direction. A visual monitoring unit 007 is provided above the cavern simulation...
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Abstract
The invention discloses an indoor experiment system and method for the dynamic stability of cavern surrounding rock under the action of stress waves and relates to the field of dynamic response and wave propagation of rock cavern surrounding rock under the action of seismic waves or blast waves. The experimental system comprises a dynamic loading unit, an incident plate, a rock mass cavern simulation unit, a transmission plate, an energy absorption unit, a crustal stress simulation unit, a visual monitoring unit and a data monitoring and acquisition unit. The experimental method comprises thesteps that: the crustal stress simulation unit applies pressure; the dynamic loading unit applies dynamic load; the incident plate and the transmission plate transmit stress waves; the energy absorption unit absorbs and dissipates dynamic energy; the visual monitoring unit records the instability dynamic process of cavern surrounding rock; and the data monitoring and acquisition unit monitors andacquires data. According to the system and the method, the stability analysis of the cavern surrounding rock can be realized under the action of stress waves considering the influence of ground stress, and the instability process is observed.
Description
Technical field [0001] The invention relates to the field of dynamic response and wave propagation of rock cave surrounding rocks under the action of seismic waves or blasting waves, in particular to an indoor experimental system and method for dynamic stability of cavern surrounding rocks under stress wave action. Background technique [0002] With the development of the depth and breadth of underground engineering, there is an urgent need to obtain the dynamic mechanical response of the cavern surrounding rock under the action of stress waves. For deep underground rock caverns, due to external activities such as geological tectonic stress and manual excavation activities, the surrounding rock structure becomes complex, including complex discontinuous structural surfaces such as cracks, joints, interlayers or faults. These structural planes make the rock mass have heterogeneity and anisotropy. Under the action of external loads, especially seismic waves or blasting waves, trans...
Claims
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IPC IPC(8): G01N3/12G01N3/307G01N3/06G01N1/28
CPCG01N3/12G01N3/307G01N3/06G01N3/068G01N1/28G01N2203/0003G01N2203/001G01N2203/0019G01N2203/0035G01N2203/0042G01N2203/0641G01N2203/0658
Inventor 李建春闫亚涛王晓
Owner SOUTHEAST UNIV