梅山铁矿上向中深孔机械装药的合理参数研究

Research on Reasonable Parameters of Mechanical Loading of Upward Middle-deep Blasting Hole in Meishan Iron Mine

通过采集大量的现场数据进行多次试验,结果表明:采用乳化颗粒铵油炸药适当加柴油可有效降低返粉率;上向中深孔炮孔直径为91 mm,装药台车退管速度控制在17 cm/s左右,罐内静压为0.65~0.7 MPa、动压为0.45 MPa,可以确保良好的出药连续性。试验结果为梅山铁矿实现机械化装药提供了基础装药参数,对于国内类似矿山实现机械化装药也有一定的指导作用。

A large numer of experimental data is collected to conduct multiple experiments, the ex- perimental results show that, the return fine rate can be reduced by taking the measures of adding diesel into emulsification granular anfo explosives. The good continuity effects of delivering explosives is obtained with the diameter of boreholes of upward middle-deep blasting hole is 91 ram,the back tube speed of explosive loading truck is about 17 cm/s, the static pressure and dynamic pressure of the tank are 0. 65 ^-0.7 MPa, 0. 45 MPa respectively. The experimental results provide the basic paramters for mechanized loading in mesishan iron mine, besides that, these paremeters can also provide a certain reference to the similar domefic mines.