ugg stiefel Puke the company's new Atlas Copco Dri -

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Puke the company's new Atlas Copco Drilling Equipment

To increase the footage of each maggot hole, decreased palm reinforcement and sprayed concrete in the amount of work to lift-off economic benefits. Ni Pina drilling control also reduced the spread of solder consumption, starting with the opening of the positioning and reduced drill wear, such as drill rods tooth footage of the average life expectancy of 500 meters, 60 meters footage regrinding every time. Devastated in Stockholm Lund Kars near the new high-speed railway tunnel project in the use of the Robo ~ Boomer Drill rate. Vietnam _ summer-meter tunnel Ferret 9.2 l foam in the car when the flowers as MPa shrine rock and rock-chip d8 mm hole to play, Ai-rejection column drill teeth. 'Two months to complete the tunnel drilling into the N. ~ 00 m at r ashamed industry in two classes, class seven hours a day, 4 hole to play, each hole footage of 4.8 meters. The new rate of crack B ~ ltec the station platform was a new type of fully mechanized bolt | Officials nursing a car which is characterized by advancing the drill button to install bolt, and usually use two rotating propeller did not count phase} b On the Phoenix light and compact machine. Used for fixed tap into this week is made of lead. Pu ? bismuth based not wear green track, and install it in the bowl din see the process of application are the subject at the sub-base with a risk, t knock can put the shrine overlooking Laos and Kong-bit o-__ of this trap design advantages of the other sister facilities small size, the operator can refuse quarter to the hole can be difficult in the other car to see the hole mounting holes marked turnings. By cutting into the province to help local short gold bearing ancient: Shop Tour solid rock desert can automatically express card machine shop drill a hoof like. Kitchen boosters for the full length of Science '. . l ugly. Health ec station suddenly is jangling l B0 tunnel car dumped in the installation of similar equipment and equipment which is the basic bolt t turn ■. ≮, {{. , Drama / 'to' infrastructure capital mine mine return air duct ventilation features, along with the progress of mining engineering change several times a ventilation system and ventilation methods. Roadway from a single shaft, the ventilation is even more complicated. Conventional method is to lay 0.6 to 1.2 meters in diameter, air duct, or boring or tunneling from the upper level patio for air. Large-diameter duct is difficult to seal, shaft cross-section occupied by more than the shaft hole drilling additional investment is bound to increase. To improve infrastructure in the mine ventilation tunneling, Oriental Institute of Mining Science, a new ventilation, and its essence is the level of air along the shaft to the infrastructure, the level of the infrastructure installed near the shaft turbine air compressor, air return compressed along the shaft by the laying of small diameter (300 ~ 400 mm) duct sent. Figure 1 shows the basic schematic diagram of this method. 1 Shaft Deepening the level of roadway and intersection with the infrastructure installed after the sealed duct 2, 3, installed in the auxiliary tunnel turbine compressor 4, to receive pressure air into the pipe joints leaning 2. 4 compression return air compressor 5,[link widoczny dla zalogowanych], and import duct 2. Lane 3 was compressed within the return air negative pressure, fresh air flow along the shaft 1 into the infrastructure level, with local fan directly to the heading face conveyor 5, the fresh air flow. Can be calculated back to the romantic compression ? ≥ 1t2R / P ・ O2 where: E a degree of compression in Return Air | R a wind tunnel aerodynamic resistance, Pa-S / m. JP a level of absolute pressure of air inside the tunnel, PajQ a return to romantic air volume, m. / S West afraid of mineral research and production joint Australian iron ore company Katz in a 90 m level of the excavation pit bottom to use this' ring hollow square where a new left circle 1 ■ shows a return air duct of a shaft I2} 3 an auxiliary Lane meet unexpectedly, a turbo compressor 4, 5,[link widoczny dla zalogowanych], a local fan. 6 Gen kinds of home party mood abundance (see Figure 2). For the discharge of return air, 2O meters in the shaft of a top level of depression in the laying of a roadway diameter 418 ~ 450 mm, ~: 670-meter wind leaning metal seal, a 2O-meter level in the shaft bottom two parallel installed a TB-2oo air compressor type 14 pick in this wind turbine on the pick. Laid along the roadway infrastructure in the air compressor on the metal duct and connected with a long face forward this hair dryer. Distance from the face of the duct is 3O ~ 15O meters. Required power 12ff ~ 200 kW, the exhaust from the face amount of 3 to 3.9 m / sec. Face 4 by BMII a local fan ventilation. Meanwhile there are several levels of infrastructure, can be installed in the upper level of a few turbo air compressor (Figure 3),[link widoczny dla zalogowanych], and in each level can be followed by the laying of infrastructure received a turbo hairdryer air compressor to the vehicle (DCl66 trolley the wheel steering), which uses the standard AtlasCopco arm, propeller, drilling machines and control systems. There are two cells of the anchor installation ship devices; LBC ~ d for 1.5 to 2.4, the anchor technique and the HBU-type stalk 2.4 to 6 meters for the bolt. Boltec trolley can be equipped with a variety of common specifications of the bolt. ((WorldMiningEquipment)), 1991,[link widoczny dla zalogowanych],9, l4 ~ 17 (Wang Jian Shi Hua) l5
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