Title:
MINING-INDUCED STRESS ASSESSMENT METHOD BASED ON MICROSEISMIC DAMAGE RECONSTRUCTION
Document Type and Number:
WIPO Patent Application WO/2020/228546
Kind Code:
A1
Abstract:
The present invention relates to a mining-induced stress assessment method based on microseismic damage reconstruction, and is suitable for use in the field of microseismic monitoring for mine safety. The method specifically comprises: performing grid division on an assessment area, and calculating cumulative deformation energy εEi and the number Ni of microseismic events or a coal rock loading elapsed time Δti of each grid node by using an accumulation method; finding the maximum cumulative deformation energy value max{εEi} of the evaluation area, and calculating average cumulative deformation energy εF; and obtaining a mining-induced stress distribution on the basis of obtaining a damage parameter D distribution by means of calculation. The method has obvious significance in physical mechanics, involves clear parameter calculation, has high universality and operability, is suitable for being realized by programming, has good application feasibility, and can realize approximate real-time inversion of a mining-induced stress in a coal seam mining process.
Inventors:
CAI WU (CN)
DOU LINMING (CN)
CAO ANYE (CN)
GONG SIYUAN (CN)
YUAN SHASHA (CN)
DOU LINMING (CN)
CAO ANYE (CN)
GONG SIYUAN (CN)
YUAN SHASHA (CN)
Application Number:
PCT/CN2020/088156
Publication Date:
November 19, 2020
Filing Date:
April 30, 2020
Export Citation:
Assignee:
UNIV CHINA MINING (CN)
International Classes:
G01V1/28; G01L1/25; G01V1/30
Foreign References:
| CN110118991A | 2019-08-13 | |||
| CN106646607A | 2017-05-10 | |||
| US20080247269A1 | 2008-10-09 | |||
| CN104100297A | 2014-10-15 | |||
| CN105891874A | 2016-08-24 |
Attorney, Agent or Firm:
NANJING ZHENGLIAN INTELLECTUAL PROPERTY AGENCY CO., LTD. (CN)
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