Caving Mining of Steeply Inclined Narrow Veins and Supporting Mechanism of Caved Rock

doi:10.12068/j.issn.1005-3026.2019.02.024

Abstract

Abstract: Based on the gold mine in Jinchanggouliang， taking advantage of the supporting role of caved rock， a caving mining method was proposed for steeply inclined narrow veins. Using numerical simulation method， the support mechanism action of caved rock for surrounding rock was studied and the influence of sublevel height on the supporting effect of caved rock was analyzed. The calculation results are as follows: the stability of surrounding rock increases significantly by the caving mining method compared with the open stope method and the volume of plastic zone decreases by 58.4%.With the increase of the sublevel height， the support effect of caved rock decreases slightly. The research result provides a new way for mining the broken orebody with steeply inclined narrow veins based on caving mining method. The feasibility and rationality of the caving mining method are also verified.

Key words: caving mining method, steeply inclined narrow vein, stability of surrounding rock, sublevel height, numerical simulation

CLC Number:

TD851

AN Long， WANG Ri-dong， HOU Peng-yuan， LIANG Rui-yu. Caving Mining of Steeply Inclined Narrow Veins and Supporting Mechanism of Caved Rock[J]. Journal of Northeastern University Natural Science, 2019, 40(2): 278-283.

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