Research on Grouting Reinforcement Technology for Fractured Roof Water Pouring Roadway
In order to ensure the safe excavation of the 1 # connecting roadway and win time for early completion,and to address the problems of large water seepage and surrounding rock deformation caused by the fractured roof of the 1 # connecting roadway in the 1207 working face,combined with the on-site conditions of the 1 # connecting roadway,it is proposed to reinforce the roof,improve the stability of the fractured rock mass of the roof,and seal the water conducting cracks.To ensure the safety of grouting reinforcement,7 grouting boreholes are arranged in the drilling site near the water spraying point of the connecting roadway in the auxiliary transportation roadway of mining area 2.The boreholes cover the water spraying point and nearby area of the connecting roadway roof.After grouting,the water conducting cracks on the roof are sealed,effectively reducing the water spraying amount of the interlocking roadway roof.Install grouting boreholes in the connecting alley to enhance the stability of the fractured rock mass on the roof and seal shallow water conducting cracks.After on-site application,when excavating in the fractured area of the roof,the roof of the No.1 connecting roadway basically leaked water while the deformation of the surrounding rock of the roadway was relatively small,indicating that the grouting reinforcement technology scheme adopted on site has achieved good application results.
NETL
NSTL
万方数据
