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CN-224216451-U - Real triaxial test cushion block device for measuring rock burst process and acoustic emission positioning of chamber structure

CN224216451UCN 224216451 UCN224216451 UCN 224216451UCN-224216451-U

Abstract

The utility model relates to the technical field of rock mechanics and nondestructive testing, in particular to a true triaxial test cushion block device for measuring a rock burst process and acoustic emission positioning of a structure containing a cavity, which comprises a base, a first cushion block, a second cushion block, a third cushion block, a fourth cushion block, a circular through hole, a mounting seat, a driving block, an adjusting screw rod, a guide sliding rod and an acoustic emission sensor, wherein the base is provided with a first cushion block, a second cushion block, a third cushion block, a fourth cushion block and a circular through hole; the rear side of the base is provided with a first cushion block, the front side of the base is provided with a second cushion block, the left side of the base is provided with a third cushion block, the right side of the base is provided with a fourth cushion block, the upper end of the first cushion block is provided with a circular through hole, the inner side of the first cushion block is provided with a mounting seat, and the upper end of the mounting seat is provided with a miniature camera module and an auxiliary lighting module; according to the utility model, eight-channel acoustic emission monitoring arrangement under a true triaxial loading condition is realized through a plurality of acoustic emission sensors, meanwhile, the whole rock explosion process can be observed in real time through the miniature camera module in the central cavity, and visual quantitative analysis is realized by matching with the acoustic emission sensors.

Inventors

  • WANG YANG
  • GUO CHANGBAO
  • LIU GUI
  • GUO YUNPENG

Assignees

  • 中国地质科学院地质力学研究所

Dates

Publication Date
20260508
Application Date
20250526

Claims (7)

  1. 1. The true triaxial test cushion block device for measuring the rock burst process with the cavity structure and acoustic emission positioning comprises a base (1) and is characterized by further comprising a first cushion block (2), a second cushion block (3), a third cushion block (4), a fourth cushion block (5), a circular through hole (6), a mounting seat (7), a driving block (8), an adjusting screw rod (9), a guide sliding rod (10) and an acoustic emission sensor (11), wherein the first cushion block (2) is arranged at the rear side of the base (1), the second cushion block (3) is arranged at the front side of the base (1), the third cushion block (4) is arranged at the left side of the base (1), the fourth cushion block (5) is arranged at the right side of the base (1), the circular through hole (6) is formed in the upper end of the first cushion block (2), a mounting seat (7) is arranged at the inner side of the first cushion block (2), a miniature camera module and an auxiliary lighting module are arranged at the upper end of the mounting seat (7), the driving block (8) is arranged at the lower end of the mounting seat (7), the adjusting screw rod (9) is arranged below the mounting seat (7), the adjusting screw rod (9) is arranged at the front side of the adjusting screw rod (9), the guide sliding rod (10) is arranged at the front side of the first cushion block (4) The upper ends of the fourth cushion blocks (5) are respectively provided with an acoustic emission sensor (11).
  2. 2. The true triaxial test cushion block device for measuring the rock burst process with the cavity structure and acoustic emission positioning, which is disclosed in claim 1, is characterized in that a central rock sample is placed at the upper end of a base (1), a second cushion block (3) and a first cushion block (2) are respectively attached to the front side and the rear side of the base (1), a third cushion block (4) and a fourth cushion block (5) are arranged in a bilateral symmetry manner, and the third cushion block (4) and the fourth cushion block (5) are respectively attached to the left side and the right side of the base (1).
  3. 3. The true triaxial test cushion block device for measuring the rock burst process with the cavity structure and acoustic emission positioning according to claim 1 is characterized in that the front side and the rear side of a first cushion block (2) are arranged in an open mode, the lower end of a circular through hole (6) is communicated with the inner side of the first cushion block (2), and the front side and the rear side of a mounting seat (7) are connected with the inner side of the first cushion block (2) in a sliding mode through sliding grooves.
  4. 4. The true triaxial test cushion block device for measuring the rock burst process with the cavity structure and acoustic emission positioning according to claim 1 is characterized in that a driving block (8) is fixedly connected with the lower end of a mounting seat (7), an adjusting screw (9) is in threaded connection with the driving block (8), the left end and the right end of the adjusting screw (9) are rotatably connected with a first cushion block (2), and a knob (91) is fixedly installed on the outer side of the first cushion block (2) extending from the left end of the adjusting screw (9).
  5. 5. The true triaxial test cushion block device for measuring the rock burst process with the cavity structure and acoustic emission positioning according to claim 1 is characterized in that a guide sliding rod (10) and an adjusting screw rod (9) are arranged in a front-back parallel mode, the left end and the right end of the guide sliding rod (10) are fixedly connected with a first cushion block (2), and a driving block (8) is in sliding sleeve connection with the outer side of the guide sliding rod (10).
  6. 6. The true triaxial test cushion block device for measuring the rock burst process and acoustic emission positioning of the chamber structure, which is disclosed in claim 1, is characterized in that the upper ends of the first cushion block (2), the second cushion block (3), the third cushion block (4) and the fourth cushion block (5) are respectively provided with a mounting groove, the acoustic emission sensor (11) is mutually matched with the inner sides of the mounting grooves, and the lower end of the acoustic emission sensor (11) is elastically connected with the inner sides of the mounting grooves through a jacking spring.
  7. 7. The true triaxial test cushion block device for measuring the rock burst process and acoustic emission positioning of the chamber structure, which is disclosed in claim 6, is characterized in that wiring holes I are formed in the left side and the right side of the first cushion block (2) and the second cushion block (3), wiring holes II are formed in the rear sides of the third cushion block (4) and the fourth cushion block (5), and the wiring holes I, wiring Kong Erjun and the mounting groove are mutually communicated.

Description

Real triaxial test cushion block device for measuring rock burst process and acoustic emission positioning of chamber structure Technical Field The utility model relates to the technical field of rock mechanics and nondestructive testing, in particular to a true triaxial test cushion block device for measuring a rock burst process and acoustic emission positioning of a chamber-containing structure. Background The rock mechanics experiment is an experiment directly carried out by adopting natural rock, and the experimental method comprises a normal temperature and pressure experiment, a high temperature and pressure experiment, a long-term creep experiment and the like, and can be widely used for researching rock, mineral formation conditions, processes and mechanisms, rock, mineral deformation and phase change, dynamic diagenetic ore formation processes and mechanisms, rock wrinkling and rock cracking processes and mechanisms, rock mechanics properties, performances of the rock mechanics properties under different geological conditions and the like; At present, in rock mechanics experiments, a true triaxial loading test is an important means for researching the multidirectional stress characteristics of a rock mass, and is a triaxial compression test for enabling a rock test piece to be in a stress combination state with three unequal main stresses, and quantitative analysis of dynamic processes such as crack expansion, micro-fracture positioning and the like can be realized by matching with an acoustic emission monitoring technology. However, the existing true triaxial loading system generally lacks a convenient and reliable acoustic emission probe arrangement structure, and particularly for complex samples containing a cavity, the traditional device is difficult to accurately collect acoustic emission information in a multidimensional space, so that arrangement and collection of multi-azimuth acoustic emission signals are difficult. Disclosure of utility model In order to overcome the problem that a true triaxial loading system generally lacks a convenient and reliable acoustic emission probe arrangement structure, and particularly for complex samples containing a cavity, the traditional device is difficult to accurately collect acoustic emission information in a multidimensional space, so that arrangement and collection of multi-azimuth acoustic emission signals are difficult. The technical scheme is that the real triaxial test cushion block device for measuring the rock burst process and acoustic emission positioning of the chamber-containing structure comprises a base, and further comprises a first cushion block, a second cushion block, a third cushion block, a fourth cushion block, a round through hole, a mounting seat, a driving block, an adjusting screw rod, a guide sliding rod and an acoustic emission sensor, wherein the first cushion block is arranged on the rear side of the base, the second cushion block is arranged on the front side of the base, the third cushion block is arranged on the left side of the base, the fourth cushion block is arranged on the right side of the base, the round through hole is formed in the upper end of the first cushion block, the mounting seat is arranged on the inner side of the first cushion block, the miniature camera module and the auxiliary lighting module are arranged at the upper end of the mounting seat, the driving block is arranged below the mounting seat, the guide sliding rods are arranged on the front side and the rear side of the adjusting screw rod, and the acoustic emission sensors are arranged on the upper ends of the first cushion block, the second cushion block, the third cushion block and the fourth cushion block. Preferably, through setting up circular through-hole, mount pad, driving piece, accommodate the lead screw, direction slide bar, conveniently carry out dismouting maintenance to miniature module of making a video recording and auxiliary lighting module, through setting up first cushion, second cushion, third cushion, fourth cushion, acoustic emission sensor, miniature module of making a video recording and auxiliary lighting module, realize diversified acoustic emission signal's high-efficient arrangement and collection, still accessible built-in camera device is shot the chamber inside, record rock burst overall process. Preferably, the upper end of the base is provided with a central rock sample, the second cushion block and the first cushion block are respectively attached to the front side and the rear side of the base, the third cushion block and the fourth cushion block are arranged in bilateral symmetry, and the third cushion block and the fourth cushion block are respectively attached to the left side and the right side of the base. Preferably, the front side and the rear side of the first cushion block are arranged in an open mode, the lower end of the circular through hole is communicated with the inner side of the first cushion