Kawaguchi Tungsten Mining Explosive Technology ha

defgf10aj

Kawaguchi Tungsten Mining Explosive haulage Study Process

Into greater difficulties, serious impact on drilling efficiency. Therefore, the quality of drilling works chest up the mountain, we must strictly control the use of test YGZ - 90-rail-type rig, with a 25-type disc sly TJ pry drill frame. Button Bits column diameter of 51 ~ 55mm555iMMo hollow drill steel, drill rod round pick Rod diameter 32n, zm, each length of 1.2m. Drilling include: shift drilling, drilling legislation, adjusting holes, drilling and other operations. 1) Move mountains drilling rig in the drilling within the shift, the wind through 2t winch hoist installed in the middle of drilling on the upper mountain cave room, chamber size 3 × 2.5X2.5m (length × width × height) fixed winch Based on the concrete in Sapporo, in Figure 5. When drilling, winch in the taut state. Rope is only tied to the original end skid beams on the floor dip as big, easy to produce drill down dislocation of work, shift down when the down stolen, operation is very safe. Test center in the rig above the top of column two additional disk shelf welding the channel length of 1.4m save beams, together with the lower skid beams tied together with rope on the increase. The measures taken after the drilling rig stability, shift more smooth and safe. 2) To drill drilling legislation is mainly in accordance with the roadway floor angle 4O. Drilling frame and disc center (ie fan-hole radiation center) from the floor rock up the hill from the prince Yu 5 transcripts YGZ - 90 drilling rig working circles l-TJ a skid-type 25-type aircraft -2 quote a set of additional cross-welding trespassing roundworm } 3-2-- wind actinides search car rope Fs F4 one liter of a vehicle, animal husbandry base, temporary console from 1.2m, to a fixed waist and the center line as the benchmark rig. Vertical drilling degree of accuracy and strong, direct impact on hole quality, it is caused by the operator to be highly valued, should try to avoid errors caused by the early regardless. 3) adjusting the hole before drilling the inclination of each hole, testing begins with the determination of semi-circular protractor plate. In this way inclined roadway, time-consuming, error and large. Carved in the disc after the improvement of the degree, transfer will be quasi-hole glass tube. 4) drilling the tunnel angle is greater than 4O, roof too boring, drilling and vertical direction at 40. , Drilling rig swing, resulting in next to the pitch, so that the load increase in drill holes, if the operation of unskilled, easily lead to broken solder, so the skill level of workers demanding action. To meet the design must ensure that drilling deep holes, drilled holes after a Paipao immediate acceptance, that does not meet the design requirements or plugging holes, should be a timely manner. 2, blasting a) explosive dynamite performance are directly affected by blasting power haulage effect. From the explosive force of the characteristics of haulage mining method should be used as high-power explosives, but considering the current plight of the mine, can not replace other explosives varieties. Only use of the self test explosive ammonium Prince song, the performance of the brisance 12ram, explosive force of 280cm '. Cartridge Diameter 45. Performance due to unstable explosives factory, explosives density of 0.8, the quality of the charge and the blast effect to some extent. 4 of 1993 relative to the design and construction of metallurgical and mining 252) Charges trials, in different ways according to booster hole, charge structure in two ways. Packaging is multi-drug structure and Explosive detonating charge structure. Length of the fan orifice plug hole should not charge too much, the strengthening of rows of the block length of the orifice hole filling should be distinguished in order to avoid difficulties in the roof caused by excessive charge. Help on the test, the length of the roof stemming take 0.5 ~ 1.5m; two-hole blasting the end of the folder to help the system force, blocking access 0.2m long proved: many primary explosive packaging charge structure, charge line cumbersome, less effective with discharge initiation, initiation is not reliable, sometimes an individual hole or blasting unexploded incomplete. Detonating charge structure. Fully able to overcome these shortcomings. 3) initiation of milliseconds Nonel Methods. Initiating a \, security, with 2 firing detonators and detonating fuse length 2m. 4) the number of rows and initiating an explosion at a time interval of the bursting of the number of rows. directly affect the effect of blasting power distance and blasting a few steps if the first row of blasting, blasting operations increased number of cycles affect the mining efficiency; if too many rows a blasting, blasting caving ore resistance increases, the blasting power of bad throws, bulk rate was also high. according to Soviet scholars graduated Vulcan B ・ A ・ Romanov's blasting power operation moving the formula, that may reach Explosive haulage distance L, is thrown by the explosion force and ore from the h kinetic and potential energy by rolling along the floor from the k determined. L = L1 + L2 (m) test, mainly based on explosion force casting distance L., determine the number of rows a blast.. b.5nWL】 i XI a calyx tg40. + a 20m where b - ore body thickness'
More articles related to topics：

Karst-type bauxite deposits Pingguo washing ore p

Karst topography, common large volume processing

Karst collapse prevention foundation grouting tec