Research on Deformation Control Technology of Roadway Surrounding Rock under Fast Excavation Disturbance
Aiming at the deformation and control of roadway surrounding rock under the disturbance of fast excavation in Huangling No.1 Coal Mine,the distribution and evolution characteristics of horizontal stress and abutment stress of surrounding rock were analyzed by means of field investigation,monitoring and theoretical calculation on the basis of clarifying the disturbance of fast excavation in 632 return airway.The height of natural balance arch of 632 return airway is 1.048 m.The support measures combining temporary support and permanent support are proposed.The combined support of bolt+anchor cable beam+metal mesh is adopted in the roof of 632 return airway,and the combined support of bolt+plastic steel mesh is adopted in the two sides.With the help of in-situ monitoring technology,the feasibility of surrounding rock control scheme is verified,and the deformation of roadway surrounding rock under fast excavation disturbance is controlled.
roadwayfast excavation disturbancedynamic and static combined loadsupport
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