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| The analog simulation research on oblique bedded surrounding rock deformation |
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Received:October 04, 2015
Revised:October 13, 2015
Accepted:October 20, 2015
Published Online:August 31, 2016
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| DOI： |
| KeyWord:Layered rock mass;Thin orebody ;Similar simulation; Separation; The fracture damage ; Plate balance structure |
| Author | Institution |
| Jiang jun |
Engineering Institute of Land and Resources，Kunming University of Science and Technology |
| Hou Ke-peng |
Engineering Institute of Land and Resources，Kunming University of Science and Technology |
| Zhou hang |
Engineering Institute of Land and Resources，Kunming University of Science and Technology |
| Xie Jin-yi |
Engineering Institute of Land and Resources，Kunming University of Science and Technology |
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| Abstract: |
| For the study of inclined thin bedded surrounding rock ore body in the upper strata in mining process regularity of deformation and destruction. Yongchang lead-zinc ore body as a physical model test. Through similar material simulation experiment a two-dimensional geological model is established,To tilt in layered rock mass under the condition of thin orebody of strata after underground excavation deformation and failure characteristics, mechanical characteristics and failure process are studied. Results showed that the roof is influenced by the first and second excavation is the largest,With the unceasing excavation,along the direction of excavation ore wall constantly into interval tiberium spike,and the direction of the horizontal displacement between each two ore body excavation are a reversal will happen. Located in the pillar at the top of the smaller values of the settlement of surrounding rock.Strata horizontal deformation and subsidence are pointing in the direction of the gob area in center offset. Due to poor adhesion between the layers flexural capacity is not strong, the layered rock mass is easy cause bending fracture damage.The relative subsidence increment of overburden rock and level relative displacement increment monotone decreasing. |
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