岩溶矿床帷幕注浆截流新技术

岩溶矿床地下水害的防治一直是矿山防治水界的一个难题,而传统的帷幕注浆技术存在堵水率低、投资高、针对性不强等问题。以新桥矿为例,总结了我院在帷幕注浆截流技术方面取得的新进展,包括运用数值模拟技术对帷幕进行优化设计及动态指导、采用超声波透视技术探查导水通道并指导布孔、大量使用改性粘土浆控制浆液扩散。

A New Technology of Groundwater Flow Cut-Off by Grout Curtain for Karst Mineral Deposit

Prevention and control of underground water harm of karst mineral deposit is always a difficult problem in the field of mine water prevention and control.However,conventional curtain grouting technology has such problems as low groundwater cut-off rate,high investment and inadequate aiming.Taking Xinqiao mine as example,the author summed up new progress of Changsha Institute of Mining Research in groundwater cut-off technology by curtain grouting,including using numerical simulating technique for optimized design and dynamical direction of curtain, and using ultrasonic perspective technique to detect permeable water passages and direct layout of grouting holes as well as using lots of modified clay slurry to control dispersion of grout.