关键词: 溜井堵塞, 振动放矿, 防治措施

Abstract: The chute in the underground mining area is an important channel to communicate the ore drawing and transportation in the middle section of the stope. The frequent occurrence of chute blockage seri⁃ ously affects the normal production. At the same time，the treatment of chute blockage is often difficult and dangerous，and there is a great potential safety hazard. In order to deal with the problem of chute blockage in mining area safely and efficiently，the problems of underground hydrogeology，ore rock properties，chute structure，grid sieve size and use management of Zhongguan Iron Mine are analyzed. The results show that powder ore and water are the main reasons for the blockage of the chute in the mining area，followed by large ore and debris into the well. In the working practice，three methods of treating chute blockage，such as re⁃ mote vibration ore drawing，blasting vibration and hydraulic scouring are summarized. Various measures to prevent chute blockage in mining area are put forward，and good results have been achieved in field applica⁃ tion.

Key words: chute blockage, vibration ore drawing , prevention measures