Title:
LOW-FREQUENCY DISTURBANCE AND HIGH-SPEED IMPACT-TYPE HIGH-PRESSURE TRUE TRIAXIAL TEST APPARATUS AND METHOD
Document Type and Number:
WIPO Patent Application WO/2018/170933
Kind Code:
A1
Abstract:
A low-frequency disturbance and high-speed impact-type high-pressure true triaxial test apparatus and a method; the apparatus consists of a static load loading frame (1), a dynamic load loading frame (2), four static load loading actuators (3-6), two dynamic load loading actuators (7, 8), and a Split-Hopkinson pressure bar mechanism; all of the actuators (3-8) are connected to an oil source system; axial centers of piston shafts of the dynamic load loading actuators (7, 8) are provided with hollow bores (15, 16), and end portions of the piston shafts are equipped with a dynamic pressure sensor (17) having a hollow ring-shaped structure; the Split-Hopkinson pressure bar mechanism applies a high-speed impact load to a rock sample (26) by means of the hollow bores (15, 16) and a central hole of the dynamic pressure sensor (17), respectively; the two dynamic load loading actuators (7, 8) use a static pressure oil path balance support sealing method, and the actuators (7, 8) are connected to the oil source system by means of a servo valve, while an energy accumulator is arranged on an oil path; thus, flow rate is increased by means of the servo valve to drive a piston to dynamically respond, and system pressure is balanced by means of the energy accumulator when a low-frequency disturbance is loaded. The apparatus and method achieve, for the first time, the free application of a low-frequency disturbance load and a high-speed impact load on the same device.
Inventors:
ZHANG XIWEI (CN)
FENG XIATING (CN)
KONG RUI (CN)
YANG CHENGXIANG (CN)
PENG SHUAI (CN)
SHI LEI (CN)
YAO ZHIBIN (CN)
TIAN JUN (CN)
MA DONGHUI (CN)
FENG XIATING (CN)
KONG RUI (CN)
YANG CHENGXIANG (CN)
PENG SHUAI (CN)
SHI LEI (CN)
YAO ZHIBIN (CN)
TIAN JUN (CN)
MA DONGHUI (CN)
Application Number:
PCT/CN2017/078368
Publication Date:
September 27, 2018
Filing Date:
March 28, 2017
Export Citation:
Assignee:
UNIV NORTHEASTERN (CN)
International Classes:
G01N3/12
Foreign References:
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| CN106198264A | 2016-12-07 | |||
| CN103481914A | 2014-01-01 | |||
| CN105169069A | 2015-12-23 | |||
| CN102331366A | 2012-01-25 | |||
| CN104535409A | 2015-04-22 | |||
| CN102735532A | 2012-10-17 | |||
| CN202837121U | 2013-03-27 | |||
| CN101458192A | 2009-06-17 | |||
| JP2000046707A | 2000-02-18 |
Attorney, Agent or Firm:
SHENYANG DONGDA INTELLECTUAL PROPERTY AGENCY CO., LTD (CN)
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