Stability Evaluation of Stope Based on Mathews Graph Method

doi:10.12068/j.issn.1005-3026.2016.01.016

Journal of Northeastern University Natural Science ›› 2016, Vol. 37 ›› Issue (1): 74-78.DOI: 10.12068/j.issn.1005-3026.2016.01.016

• Resources & Civil Engineering • Previous Articles Next Articles

Stability Evaluation of Stope Based on Mathews Graph Method

ZHAO Yong¹， YANG Tian-hong¹， WANG Xin-rong²， HU Gao-jian¹

1.School of Resources & Civil Engineering，Northeastern University， Shenyang 110819， China; 2. MCC Capital Engineering & Research Incorporation Qinhuangdao Co.， Ltd.，Qinhuangdao 066000， China.

Received:2014-12-01 Revised:2014-12-01 Online:2016-01-15 Published:2016-01-08
Contact: ZHAO Yong
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Abstract

Abstract: There are eighty unprocessed mined-out areas in Hongling lead-zinc ore for years of mining.In order to evaluate the stability of the goafs， several kinds of indexes representing the engineering quality of rock mass in mines were acquired by the survey of engineering geology and the ore-bearing rock mechanics experiments. According to the acquired ore and rock mechanics index， the stability number and radius of hydraulic in testing goaf were calculated using the Mathews stability graph method.And stability and probability of the testing goaf were evaluated by rendering synthetic map including the isoprobability contours and the Mathews stability graph. The testing goaf was simulated with FLAC^3D， and the results agreed well with the results by using the Mathews stability graph method. The parameters for unstable goaf were optimized， and some supporting measures for the unstable goaf were proposed. This method can be used to evaluate all goafs in Hongling ore and provide reference for the similar mines.

Key words: Mathews stability graph, Q system, stability of goaf, FLAC^3D, support design

CLC Number:

ZHAO Yong， YANG Tian-hong， WANG Xin-rong， HU Gao-jian. Stability Evaluation of Stope Based on Mathews Graph Method[J]. Journal of Northeastern University Natural Science, 2016, 37(1): 74-78.

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Stability Evaluation of Stope Based on Mathews Graph Method

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