Optimization Analysis and Research on Support Parameters of the 110101 Transportation Roadway in Laowadi Coal Mine
In response to the serious deformation problem of the 110102 transportation roadway in Laowadi Coal Mine,drilling peeping is used to determine the loose circle of the surrounding rock,stress relief method is used to measure the original stress,the stress situation and stress evolution law of the roadway are analyzed combined with the FLAC3D software.Improvements are made to the original support scheme.The results show that after optimizing the roadway,its roof subsidence amount decreases by 40%,the floor heave amount decreases by 50%,the left side shrinkage amount decreases by 60%,and the right side shrinkage amount decreases by 33.3%;After optimization,its roof stress decreases by 25%,the floor stress decreases by 26.3%,the left side stress decreases by 66.7%,and the right side stress decreases by 57.1%;Safe and efficient stoping is achieved.
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