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| Surface movement range determination based on multi-profile large deformation discrete element simulation analysis |
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Received:September 07, 2020
Revised:September 21, 2020
Accepted:October 14, 2020
Published Online:October 11, 2021
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| KeyWord:Underground mining; Quality classification; Discrete element; Moving range; 2 d - Block; The stability of |
| Author | Institution |
| Yang bajiu |
Yunnan Yarong Mining Technical Co.Ltd. |
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| Abstract: |
| Based on jin chang 'an mining co., LTD., underground mining of upper jin ~ old fierce provincial highway (hereinafter referred to as gold old road) as the research object, the influence of combined with field investigation and indoor rock mechanics experiment, on the basis of ore and rock mass quality classification, the large deformation of 2 d - block discrete element method, to study area 0 to 2, 4, 2, 3 section under the condition of fully open stoping mining moving range are studied on the surface of the earth. The results show that the rock movement Angle of section 0-2 with the largest mining influence range is 52°, and the movement range is about 75m from Jinlao Highway, while the minimum horizontal distance of other sections from Jinlao Highway is more than 80m, and underground mining has no influence on Jinlao Highway. Practice shows that it is appropriate and feasible to study the influence range of underground mining on the surface by using discrete element method. |
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