As the production scale of open-pit mines in China continues to expand,and many open-pit mines have shifted to the stage of deep concave open-pit mining,the situation of watery boreholes often occurs,which increases the difficulty of charging and filling for the traditional blasting construction in open-pit mines,resulting in low utilization of explosive energy and poor rock breaking effect. In order to understand the current research status of experts and scholars on the blasting technology for water-bearing boreholes in open-pit mines in recent years,effective measures to optimize the blasting effect are summarized from several aspects,including drainage technology,charge structure,hole mesh parameters,and borehole filling. The coupling mechanism of water medium and explosives to enhance the energy of rock breaking is discussed,and it is pointed out that using water medium to enhance the energy of rock breaking and achieve water mist dust suppression is an important development direction for the blasting construction of water-bearing boreholes in the future.
关键词
含水炮孔/爆破优化/水压爆破/水孔填塞/水雾降尘
Key words
water-bearing borehole/blasting optimization/water pressure blasting/filling of water holes/water mist dust suppression
维普
万方数据