Study on Mechanical Characteristics of Filling Body of Roadway Along Goaf in Wulihou Coal Mine
Taking the roadway along goaf and filling beside the roadway with high water material in the 1102 working face belt roadway of Wulihou Coal Mine as the subject,the mechanical model of the filling body under the condition of roof cutting is established by using the material mechanics beam structure theory,and the support resistance of the filling body is deduced to be 1240 kN according to the limit equilibrium state.The results of on-site mine pressure monitoring show that the support anchor rod can provide effective support resistance during the working period,and the displacement amount of the roof and floor of the roadway surrounding rock is about 10-22 cm,which verifies that the mechanical parameters of the designed filling body have a good mechanical support effect on the roadway along goaf.
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