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| Discussion on control standard of roof sinking and ground settlement caused by underground mining in Erdaohe iron mine |
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Received:January 19, 2012
Revised:July 04, 2012
Accepted:February 16, 2012
Published Online:July 30, 2012
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| DOI： |
| KeyWord:ground settlement ; roof sinking ; ground loss ratio; control standard ; underground mining |
| Author | Institution |
| ZHANG Zhi-xiong |
Kunming Engineering Research Institute of Nonferrous Metallurgy Co.,Ltd. |
| YANG Ze |
Kunming Engineering Research Institute of Nonferrous Metallurgy Co.,Ltd. |
| HUANG Xing-yi |
Kunming Engineering Research Institute of Nonferrous Metallurgy Co.,Ltd. |
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| Abstract: |
| Stress equilibrium state of stope overburden is destroyed by underground mining, which causes the rock layer movement and the ground settlement, so the surface construction safety is affected. Focusing on surface engineering facilities of Erdaohe, standard of the ground settlement and roof sinking is studied considering rock stability, empirical formula and relative codes. The results show that during underground mining , control standard of ground settlement is determined as 12 cm; control standard of roof sinking is determined as 17 cm. The method and controlling value for defining ground settlement and roof sinking guideposts are given , which is important to guide underground mining construction. |
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