高应力泥质底板条件下巷道底鼓控制技术OA

Aiming at the problems of complex causes and frequent occurrence of roadway floor heave,and poor effect of single control method in high stress argillaceous floors,research is carried out by taking the typical argillaceous floor roadway in Binchang mining area as the engineering background.The influence factors and evolution process of heaving floor are analyzed,mudstone expansion,high stress,and water were clarified as the main inducing factors,and a joint control scheme of blasting grouting locking angle steel pipe-floor slotting is proposed.Through numerical simulation,the collaborative control mechanism is revealed:the blasting pressure relief at the bottom of the hole reduces the stress concentration zone at the bottom corner of the coal side,the grouting and cementation for the broken rock mass enhances its anti deformation ability,blocks the formation of shear slip surfaces,and cooperates with the floor slot cutting to strengthen the lateral pressure release effect.After on-site application,the floor deformation finally stabilized at 87.88 mm,with uniform and relatively small force on the floor,the impact of construction on the roadway stability is minimal,and the control effect is ideal.This joint control scheme can provide a technical reference for the governance of roadway heaving floor with similar working conditions.