(1) The working face of this method is vertical. Before the start of the mining work, in addition to pulling the bottom at the bottom of the mine, it is necessary to cut the cutting vertical groove and use it as a free surface for mining. The collapsed ore is released from the bottom of the mine. (2) This method is structurally different from the mining method in the staged rock drilling stage. In this solution, a rock roadway is drilled in the lower part of the top pillar, and in the rock drilling roadway, the vertical deep hole is drilled. The depth of rock drilling is the entire stage. It is no longer divided into segments and does not dig through the segmented lanes. (1) The amount of mining work is less than that of small and medium-sized methods. (2) The rock drilling roadway is simple in layout, and the rock drilling is concentrated on one level, and it is convenient to erect and move the rock drilling equipment. (3) The workload of charging is relatively labor-saving. (because it is a downward hole). (1) The downward direction of the hole - 1 deflection direction is difficult to control, the deeper the blasthole, the greater the skewness. 2 Easy to produce large pieces. (2) This method is used abroad. At present, it has not been adopted in China. One is the existence of the above shortcomings; the other is the equipment that does not have a hole in the country. BEAM CHUCK as a Warping Machine manufacture, we also produce warping machine beam chuck for different warping machine, like Direct Warping Machine, Spandex Warping Machine, Split Warping Machine. no matter your machine is Chinese brand or karl mayer, we can do according to your beam chuck size. welcome your inquiry. warping machine beam chuck, beam chuck, karl mayer warping machine beam chuck, high quality beam chuck CHANGHZOU A-ZEN TEXTILE TECHNOLOGY CO.,LTD , https://www.warpknittingmachinery.com
(two) the advantages of this program
(3) Main shortcomings and use
(1) Characteristics of the mining stage in the stage of vertical deep hole mining