Application of grouting water control and reinforcement construction technology in complex geological structure
Due to incomplete collection of geological and hydrogeological data in the process of tunnel excavation,the surrounding rock around the water conducting fault in the construction mine is broken and has poor bearing capacity.If the support is not timely,it is easy to cause roof collapse and lead to water inrush accidents.In order to solve this type of rock support and prevent major water inrush acci-dents,a comprehensive technology of deep hole advanced curtain grouting and 36U metal support in-stallation was proposed.Deep hole advanced grouting was used outside the contour line of tunnel exca-vation to reinforce the fractured rock mass in the collapsed area of the working face,and the water passage of the water conducting fault was blocked.After grouting to control water and reinforce the surrounding rock,36U metal brackets were installed to improve the overall stability of the tunnel sur-rounding rock.Strictly implement the method of combining advanced geophysical exploration and drilling for water prevention and control before excavation,strengthen the collection and analysis of geological and hydrogeological data,which can provide technical reference for the safe excavation sup-port of tunnels to smoothly pass through such faults.
万方数据
维普
