Flexible Shield pseudo inclined coal mining method Face angle slow, long face, the face having a gently inclined, inclined seam longwall mining method is simple and the production system tunnel arrangement, a series of low tunneling characteristics, The coal mining method uses the shield bracket to separate the working space from the goaf, which greatly simplifies the management of the complex roof and creates favorable conditions for safe production. The coal in the working face slips and reduces the labor intensity. The pseudo-tilt flexible shield support coal mining method is generally applicable to
coal seams with a
thickness of 2-6 m, a stable reservoir, and a small change in the thickness of the coal seam. The height of the working face section of the coal mining method depends on the dip angle of the coal seam. The variation along the slope and the technical conditions of coal mining are generally about 30m. The coal seams have good storage conditions and can be increased to 40m-60m when the structure is simple. During the mining process, the long support is continuously connected in the return air passage, and the air inlet lane is continuously disassembled. When the working surface is pushed to the vicinity of the upper reaches of the mining area, the eyes are arranged and the brackets are gradually placed into a horizontal position, and then all are recovered. The structure of the shield bracket: the length of the steel beam is 3.0-3.2m. The specification of the steel beam should be selected according to the width of the bracket. The steel wire rope can be used for the old steel rope with a diameter of 20-30mm, and the length of the steel rope is about 20-30m. The number of steel ropes is determined according to the width of the bracket, and 2-3 of the width is less than 3 m, and 5-6 may be used when the width is 3 m or more. 2-3 layers of bamboo rafts are attached to the steel beams. 
Double Suction Pump is double suction axially split centrifugal pump. This product is widely used in water supply, irrigation, drainage pumping station, water recycling of power plants, industrial water supply systems, fire safety systems, shipbuilding industry and various water conservancy projects, and it could also be applied to petroleum and chemical pipeline transportation.
Product Feature
1.Excellent absorptive capacity: This series of double suction pumps have excellent absorption capacity, excellent cavitation performance and can operate at high speed.
2.Easy maintenance:This Axially Split Pump provides convenience for the maintenance of the rotor part (including bearing, sealing and other vulnerable parts). It can be operated by simply opening the pump cover, without disconnecting the inlet and outlet pipelines, couplings and even motors.
Double Suction Pump
Vertical Double Suction Pump,Horizontal Split Pump,Axially Split Pump,Circulating Pump,Double Worm Shell Pump,Pipeline Transportation Pump,Pipeline Transportation Pump,Horizontal Double Suction Pump
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