Research and Application of Roadway Support Method in Phosphate Mine with Complex Geological Conditions
The stability of the structural development parts of the phosphate rock body is often poor,and the roadway is prone to roof fall and rib spalling,and the support is difficult,which seriously restricts the safe production of the mine.In order to solve the support problem in the construction of underground min-ing roadway in Motianchong Phosphate Mine,through the comprehensive analysis of the complex geological conditions and construction status of the mine,and comparing the roadway construction and support meth-ods under similar geological conditions,it is decided to adopt the combined support method of steel arch,advanced short pipe roof and shotcrete to support the roadway.Practice has proved that the combined support of steel arch,advanced short pipe roof and shotcrete can quickly support the surrounding rock and seal the surrounding rock in the area where the surrounding rock is extremely unstable.The overall strength of the support body is high,which can effectively ensure the safety and stability of the roadway and ensure the safe production of the mine.
phosphate miningsteel archadvanced short pipe roofadvanced support
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