Title:
METHOD, APPARATUS AND DEVICE FOR MONITORING MULTI-SCALE FRACTURE OF HARD ROCK BY USING MULTI-BAND ACOUSTIC SIGNALS, AND STORAGE MEDIUM
Document Type and Number:
WIPO Patent Application WO/2023/115811
Kind Code:
A1
Abstract:
A method, apparatus and device for monitoring a multi-scale fracture of a hard rock by using multi-band acoustic signals, and a storage medium. The method comprises: collecting, in real time, acoustic signals of three bands, i.e. an acoustic emission band, a sound band and a micro-seismic band, during a hard-rock fracture process, and performing noise reduction on the three kinds of acoustic signals; according to the activeness of the acoustic signals of three different bands, i.e. the acoustic emission band, the sound band and the micro-seismic band, during the hard-rock fracture process, determining the current stage of a hard-rock fracture scale; according to acoustic signal b-value analysis and decision of the current stage of the hard-rock fracture scale, analyzing the trend of b values over time, so as to obtain a quantitative evaluation result of the evolution of the hard-rock fracture scale; and performing instability early warning on the monitored hard-rock according to hard-rock instability early-warning standards, i.e. the current stage of the hard-rock fracture scale and a b-value time evolution trend. The defect of it being impossible to realize the monitoring of multi-scale crack information during a hard-rock instability damage process on the basis of a single-band acoustic signal is solved, thereby facilitating an improvement in the accuracy of hard-rock fracture instability early warning.
Inventors:
SU GUOSHAO (CN)
XU HUAJIE (CN)
LI PEIFENG (CN)
CHEN BINGRUI (CN)
LAN LAN (CN)
LAN RIYAN (CN)
LI JIANHE (CN)
LIU ZONGHUI (CN)
HU XIAOCHUAN (CN)
XU HUAJIE (CN)
LI PEIFENG (CN)
CHEN BINGRUI (CN)
LAN LAN (CN)
LAN RIYAN (CN)
LI JIANHE (CN)
LIU ZONGHUI (CN)
HU XIAOCHUAN (CN)
Application Number:
PCT/CN2022/095164
Publication Date:
June 29, 2023
Filing Date:
May 26, 2022
Export Citation:
Assignee:
UNIV GUANGXI (CN)
International Classes:
G01V1/30; E21F17/18; G01N29/14
Domestic Patent References:
| WO2021203491A1 | 2021-10-14 |
Foreign References:
| CN114324610A | 2022-04-12 | |||
| CN111999171A | 2020-11-27 | |||
| CN111271128A | 2020-06-12 | |||
| CN110307038A | 2019-10-08 | |||
| CN105676267A | 2016-06-15 | |||
| CN106959748A | 2017-07-18 | |||
| CN104454010A | 2015-03-25 | |||
| CN105974469A | 2016-09-28 | |||
| JP2001241045A | 2001-09-04 |
Attorney, Agent or Firm:
BEIJING BOSHIZHIXIN PATENT AGENCY (GENERAL PARTNERSHIP) (CN)
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