Research on supporting parameter optimization technology of main roadways in coal mine
In view of the feasibility and economic problems of the supporting form of main roadways in coal mine,taking the 3-2 coal seam return airway of a certain mine as the engineering background,the original supporting form was optimized for the first time,and verified by numerical simulation method.The research showed that there was little difference between the maximum principal stress and displacement of the main roadway under the two supporting forms after the excavation of the No.3-2 coal seam return air roadway and the stoping line of the first mining of No.32101 working face,but the row distance between the bolts decreased after the initial optimiza-tion,and the supporting cost decreased.Due to the shallow burial depth of the coal seam and the good conditions of the roof and floor,the final optimization was carried out on the basis of the initial optimization of the supporting form.The optimized supporting form re-moved the anchor cable supporting,and the final optimized supporting form had better effect after field application,realizing the feasibil-ity and economy of the main roadways in coal seam supporting form under this condition.
main roadways in coal mineroadway supportingsupporting parameternumerical simulation
万方数据
维普
