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| Research and application of roadway gangue filling technology in Xinyuan Mine |
| Liu Xiaojun |
| Huayang New Material Technology Group Co., Ltd., Yangquan 045000,China |
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Abstract In order to deal with the gangue produced in underground rock roadway excavation, the theoretical calculation and field test methods were used to study the gangue filling in Xinyuan Mine. The results show that the strength of filling body required for roadway filling is not less than 3.1Mpa, so the mining method of gangue filling and high water grouting is determined. Due to the existence of filling body in roadway, the equivalent mining height is used to predict land subsidence. The observation shows that the final subsidence of the ground surface is 32mm and the inclination value is 0.9mm/m. The office building of the ground industrial square is stable without cracks.
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