NDLI: Measurements of in situ stress and mining-induced stress in Beiminghe Iron Mine of China

Content Provider	Springer Nature Link
Author	Ouyang, Zhen hua Li, Chang hong Xu, Wan cai Li, Hao jie
Copyright Year	2009
Abstract	In order to obtain the distribution rules of in situ stress and mining-induced stress of Beiminghe Iron Mine, the stress relief method by overcoring was used to measure the in situ stress, and the MC type bore-hole stress gauge was adopted to measure the mining-induced stress. In the in situ stress measuring, the technique of improved hollow inclusion cells was adopted, which can realize complete temperature compensation. Based on the measuring results, the distribution model of in situ stress was established and analyzed. The in situ stress measuring result shows that the maximum horizontal stress is 1.75–2.45 times of vertical stress and almost 1.83 times of the minimum horizontal stress in this mineral field. And the mining-induced stress measuring result shows that, according to the magnitude of front abutment pressure the stress region can be separated into stress-relaxed area, stress-concentrated area and initial stress area. At the −50 m mining level of this mine, the range of stress-relaxed area is 0–3 m before mining face; the range of stress-concentrated area is 3–55 m before mining face, and the maximum mining-induced stress is 16.5–17.5 MPa, which is 15–20 m from the mining face. The coefficient of stress concentration is 1.85.
Starting Page	85
Ending Page	90
Page Count	6
File Format	PDF
ISSN	10059784
Journal	Journal of Central South University of Technology
Volume Number	16
Issue Number	1
e-ISSN	19930666
Language	English
Publisher	Central South University
Publisher Date	2009-02-22
Publisher Place	Heidelberg
Access Restriction	Subscribed
Subject Keyword	in situ stress mining-induced stress Beiminghe Iron Mine stress measurment Metallic Materials Engineering
Content Type	Text
Resource Type	Article
Subject	Mechanics of Materials Materials Science Mechanical Engineering

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