Impact hazard source detecting technology of goaf affected area in central main roadway
In order to explore the distribution characteristics and degree of impact hazards in the affected area of the central main roadway goaf in Hujiahe Mine,CT detection technology was used to in-situ detect the affected area of the central main roadway goaf,and impact hazard assessment was conducted to determine the hazardous area and level.The results indicate that the strong impact tendency,dense roadway groups,and the mutual superposition of goaf support pressure increase the risk of impact in the central main roadway area;The coal and rock layers in the detection area of the central main roadway are generally at a weak impact risk level,further determining the hazardous area;And targeted anti-impact technical meas-ures are proposed to improve the prevention and control level of rockburst with good results.
central main roadwayaffect of goafrock burstimpact hazard sourcein-situ detection
万方数据
维普
