Testing device and method for simulating coalbump of passing through fault

Patent metadata

Field	Value
Publication number	US-12510447-B2
Application number	US-202218084181-A
Country	US
Kind code	B2
Filing date	Dec 19, 2022
Priority date	Jun 17, 2022
Publication date	Dec 30, 2025
Grant date	Dec 30, 2025

Abstract

A testing device for simulating coalbump includes a testing chamber. A first oil cylinder, a second oil cylinder and a third oil cylinder are provided within the testing chamber; each piston rod of each oil cylinder can stretch or retract. A first reaction seat, a second reaction seat and a third reaction seat are arranged opposite to a side of the first piston rod of the first oil cylinder, a side of the second piston rod of the second oil cylinder and a side of the third piston rod of the third oil cylinder respectively. The testing device includes a shear loading unit including a fourth oil cylinder and a fifth oil cylinder located on a same axis, and a side of a fourth piston rod of the fourth oil cylinder and a side of a fifth piston rod of the fifth oil cylinder are arranged opposite to each other.

First claim

What is claimed is:

1 . A testing device for simulating coalbump, comprising a testing chamber, wherein a first oil cylinder, a second oil cylinder and a third oil cylinder are provided within the testing chamber; a first piston rod of the first oil cylinder, a second piston rod of the second oil cylinder and a third piston rod of the third oil cylinder stretch or retract respectively in an X direction, a Y direction and a Z direction; the testing chamber is also provided therein with a first reaction seat, a second reaction seat and a third reaction seat, which are arranged opposite to a side of the first oil cylinder having the first piston rod arranged thereon, a side of the second piston rod having the second oil cylinder arranged thereon and a side of the third piston rod having the third oil cylinder arranged thereon, respectively; the testing device further comprises a shear loading unit comprising a fourth oil cylinder and a fifth oil cylinder; the fourth oil cylinder and the fifth oil cylinder are located on a same axis, and a side of the fourth oil cylinder ( 4 ) having a fourth piston rod arranged thereon and a side of the fifth oil cylinder having a fifth piston rod arranged thereon are arranged opposite to each other; the fourth piston rod of the fourth oil cylinder and the fifth piston rod of the fifth oil cylinder stretch or retract along the Z direction;
wherein the testing chamber comprises a fixed seat and a test specimen carrier for loading a cuboid test specimen, the fixed seat is of hexahedral structure, a space for accommodating the test specimen carrier is formed inside the fixed seat, and an inlet-outlet opening for entrance and exit of the test specimen carrier is formed on a surface of the fixed seat; the first oil cylinder is arranged on the test specimen carrier and located at an end of the test specimen in its length direction; the second oil cylinder, the third oil cylinder, the fourth oil cylinder, the fifth oil cylinder, the first reaction seat, the second reaction seat and the third reaction seat are all arranged on the fixed seat; the axis of the fourth oil cylinder and the fifth oil cylinder is along the Z direction, and the shear loading unit formed by the fourth oil cylinder and the fifth oil cylinder is arranged in parallel with the third oil cylinder; two second oil cylinders are provided and two second reaction seats are provided, and six surfaces of the test specimen are covered with pressure bearing plates respectively; and wherein two first guide rails arranged in parallel for movement of the test specimen carrier are provided outside the inlet-outlet opening, and the two first guide rails are supported and fixed by a support frame; wherein the test specimen carrier is of hexahedral structure, a test specimen loading space for accommodating the test specimen is provided through the test specimen carrier, a loading and unloading opening for loading and unloading the test specimen is provided on a surface of the test specimen carrier and arranged horizontally; the first oil cylinder is arranged on a side wall of the test specimen loading space far from the fixed seat; upper and lower side walls of the test specimen loading space are provided with through slots, and cushion blocks for transferring loading load or reaction force are slidably fitted in the through slots.

2 . The testing device according to claim 1 , wherein the test specimen is loaded on the test specimen carrier through a test specimen preparation platform, and the test specimen carrier is provided with two second guide rails arranged in parallel for moving the test specimen preparation platform; extension guide rails are provided outside the loading and unloading opening and form extension portions of the second guide rails, the extension guide rails are provided on a loading platform.

3 . The testing device according to claim 2 , wherein the loading platform comprises a test specimen preparation platform base, and four columns are provided on the test specimen preparation platform base; each of the extension guide rails is fixed on two corresponding columns by two semicircular hoops and screws; the test specimen preparation platform is of “ ” shaped frame structure, and two hollow areas of the test specimen preparation platform form avoidance space for avoiding collision with the cushion blocks; a pressure bearing plate is arranged between the test specimen preparation platform and the test specimen.

4 . The testing device according to claim 1 , wherein each of piston rods of the first oil cylinder, the second oil cylinder, the third oil cylinder, the fourth oil cylinder and the fifth oil cylinder is provided with a stress sensor and a displacement sensor.

5 . The testing device according to claim 1 , wherein the testing device further comprises a monitoring system for detecting cracks in the test specimen, and the monitoring system comprises an ultrasonic detection system, a thermal imaging detection system, an electromagnetic radiation detection system, a high-speed camera, a borehole imager, and a dynamic strain gauge.

Assignees

• Univ Chongqing

Inventors

• Peng Shoujian
• Xu Jiang
• Xu Qingfeng
• Cheng Liang
• Jia Li
• Zhou Bin
• Chen Yi'An
• Jiao Feng
• Yang Yan
• Yang Hailin
• Gan Qingqing
• Wang Xiaomei

Classifications

• G01N2203/0676

  Force, weight, load, energy, speed or acceleration · CPC title

• G01N2203/025

  Geometry of the test · CPC title

• G01N2203/0075

  Strain-stress relations or elastic constants · CPC title

• G01N2203/0067

  Fracture or rupture · CPC title

• G01N2203/0025

  Shearing · CPC title