Rock mechanics experiment system for simulating deep-underground environment

Patent metadata

Field	Value
Publication number	US-10801934-B2
Application number	US-201816036899-A
Country	US
Kind code	B2
Filing date	Jul 16, 2018
Priority date	May 15, 2017
Publication date	Oct 13, 2020
Grant date	Oct 13, 2020

Abstract

The present invention discloses a rock mechanics experiment system for simulating deep-underground environment, including a triaxial chamber consisting of a chamber cavity and a test pedestal, a stress field building module, a high pressure seepage field building module, a high temperature field building and a seepage medium permeating control measurement module arranged in the triaxial chamber, a lifting module used for installing and disassembling of the chamber cavity, and computer module used for controlling the operation of system and calculating and outputting the test data. The lifting module includes a door-shaped support frame, a cylinder piston device vertically mounted on the door-shaped support frame beam, a coupling device and a safety suspension device. The coupling device includes an oil hydraulic rod with the upper end fixedly coupled with the piston, a safety disk fixedly coupled with the lower end of the hydraulic rod, and two symmetrically disposed coupling assemblies.

First claim

What is claimed is:

1. A rock mechanics experiment system for simulating deep-underground environment, comprising:
a triaxial chamber consisting of a chamber cavity and a test pedestal,
a stress field building module, a high pressure seepage field building module and a high temperature field building module inside the triaxial chamber,
a seepage medium permeating measurement and controlling module,
a lifting module used for installing and disassembling the chamber cavity, and
a computer measurement and controlling module; wherein
the lifting module comprises a door-shaped support frame, a cylinder piston device vertically installed on a beam of the door-shaped support frame, a coupling device and a safety suspension device; the coupling device comprises an oil hydraulic rod with an upper end fixedly connected to a piston of the cylinder piston device, a safety disk fixedly connected to a lower end of the oil hydraulic rod, and two coupling assemblies arranged symmetrically with upper ends fixedly connected to the safety disk and lower ends fixedly connected to an upper end of the chamber cavity, each of the coupling assemblies consists of an upper lifting rod with an upper end fixedly connected to the safety disk, a lower lifting rod with a lower end fixedly connected to the upper end of the chamber cavity and a locking pin; a lower end of the upper lifting rod and an upper end of the lower lifting rod are connected through the locking pin in a socket way; the safety suspension device comprises four fixing rods and two locking pin rods, the four fixing rods are fixed on the beam of the door-shaped support frame through an upper end and are arranged opposite to one another in pairs, a lower end of each of the fixing rods is provided with a locking pin hole matched with the locking pin in the socket way; the two locking pin rods are respectively inserted into the locking pin holes on lower end parts of the four fixing rods oppositely arranged and are axially fixed, and the four fixing rods and the two locking pin rods form a hanging and carrying frame for suspending the safety disk.

2. The rock mechanics experiment system for simulating deep-underground environment according to claim 1 , wherein the four fixing rods are respectively and oppositely fixed on both sides of the beam of the door-shaped support frame.

3. The rock mechanics experiment system for simulating deep-underground environment according to claim 1 , wherein each of the locking pin rods is designed with an axial positioning structure to prevent a failure of the hanging and carrying frame consisting of the four fixing rods and the two locking pin rods.

4. The rock mechanics experiment system for simulating deep-underground environment according to claim 3 , wherein the axial positioning structure is a thread pair formed by a screw thread and a nut on an outer end of each of the locking pin rods.

5. The rock mechanics experiment system for simulating deep-underground environment according to claim 1 , wherein the upper end of the chamber cavity is fixedly provided with a coupling chassis, the coupling chassis is designed with an installing hole sleeved with an axial stress loading piston shaft, and the lower end of the lower lifting rod in each of the coupling assemblies is fixedly connected to the coupling chassis.

6. The rock mechanics experiment system for simulating deep-underground environment according to claim 1 , wherein a distance of a rising stroke of the piston of the cylinder piston device is more than 0.40 meters.

7. The rock mechanics experiment system for simulating deep-underground environment according to claim 6 , wherein a hydraulic oil control switch of the cylinder piston device is arranged on a conveying pipe positioned on a vertical frame of the door-shaped support frame.

8. The rock mechanics experiment system for simulating deep-underground environment according to claim 1 , wherein the stress field building module comprises a lateral stress field loading measurement and controlling module and an axial stress field loading measurement and controlling module.

9. The rock mechanics experiment system for simulating deep-underground environment according to claim 1 , wherein the high pressure seepage field building module comprises a liquid seepage field building loading measurement and controlling module and a gas seepage field building loading measurement and controlling module; the seepage medium permeating measurement and controlling module comprises a seepage liquid permeating measurement and controlling module and a seepage gas permeating measurement and controlling module.

10. The rock mechanics experiment system for simulating deep-earth environment according to claim 9 , wherein the liquid seepage field building loading measurement and controlling module and the gas seepage field building loading measurement and controlling module share one seepage medium inlet connection pipe, and the seepage liquid permeating measurement and controlling module and the seepage gas permeating measurement and controlling module share one outlet connection pipe.

11. The rock mechanics experiment system for simulating deep-underground environment according to claim 2 , wherein the upper end of the chamber cavity is fixedly provided with a coupling chassis, the coupling chassis is designed with an installing hole sleeved with an axial stress loading piston shaft, and the lower end of the lower lifting rod in each of the coupling assemblies is fixedly connected to the coupling chassis.

12. The rock mechanics experiment system for simulating deep-underground environment according to claim 3 , wherein the upper end of the chamber cavity is fixedly provided with a coupling chassis, the coupling chassis is designed with an installing hole sleeved with an axial stress loading piston shaft, and the lower end of the lower lifting rod in each of the coupling assemblies is fixedly connected to the coupling chassis.

13. The rock mechanics experiment system for simulating deep-underground environment according to claim 4 , wherein the upper end of the chamber cavity is fixedly provided with a coupling chassis, the coupling chassis is designed with an installing hole sleeved with an axial stress loading piston shaft, and the lower end of the lower lifting rod in each of the coupling assemblies is fixedly connected to the coupling chassis.

14. The rock mechanics experiment system for simulating deep-underground environment according to claim 2 , wherein a distance of a rising stroke of the piston of the cylinder piston device is more than 0.40 meters.

15. The rock mechanics experiment system for simulating deep-underground environment according to claim 3 , wherein a distance of a rising stroke of the piston of the cylinder piston device is more than 0.40 meters.

16. The rock mechanics experiment system for simulating deep-underground environment according to claim 4 , wherein a distance of a rising stroke of the piston of the cylinder piston device is more than 0.40 meters.

17. The rock mechanics experiment system for simulating deep-underground environment according to claim 14 , wherein a hydraulic oil control switch of the cylinder piston device is arranged on a conveying pipe positioned on a vertical frame of the door-shaped support frame.

18. The rock mechanics experiment system for simulating deep-underground environment according to claim 15 , wherein a hydraulic oil control switch of the cylinder piston device is arranged on a conveying pipe positioned on a vertical frame of the door-shaped support frame.

Assignees

• Univ Sichuan
• Res Institute Of Petroleum Exploration & Development Petrochina Company Limited

Inventors

• Liu Jianfeng
• Ding Guosheng
• Wu Zhide
• Wanyan Qiqi
• Ran Lina
• Pei Jianliang
• Wang Lu
• Xu Huining
• Wang Chunping
• Liao Yilin
• Zhang Qiangxing
• Lei Xiaozhang
• Fu Wenxi
• Zhang Min

Classifications

• G01N3/18 Primary

  Performing tests at high or low temperatures · CPC title

• G01N2203/0232

  High pressure · CPC title

• G01N2203/0048

  Hydraulic means · CPC title

• G01N2203/0226

  High temperature; Heating means · CPC title

• G01N33/24

  Earth materials (G01N33/42 takes precedence) · CPC title