Because the coal seam occurrence condition in our country is very complicated, the roof support equipment is very limited. Therefore, from the perspective of the number of working faces, 10% of the working faces can adopt fully mechanized mining support equipment, and roof accidents rarely occur, while 90% of the working faces use single support equipment, roof accidents often occur. From the number of miners working in the mining face, the number of miners working in the fully mechanized mining support equipment face only accounts for 10%, while the number of miners working in the single support equipment face accounts for 90%.
Management of working face of hydraulic prop:
1, the working face must be equipped with two emulsion pump and an emulsion overflow tank, the emulsion pump a work, a standby. The rated pressure is 20MPa, the rated flow rate is 80-100l /min, the pump station is located in a safe place along the tank, and the surrounding area should be kept clean without debris, water and floating coal. The emulsion tank should be covered to prevent pollution.
2, the working face must be equipped with enough injection gun, generally around 9 meters equipped with a, up and down the channel to be properly encrypted, the working face should be used at the same time more than three injection gun, after the use of the gun should be suspended in time with a prop handle, not randomly placed.
3, prop, column and row spacing for the way, protection measures, such as prop shall prepare the corresponding procedures and specifications, procedures must pay attention to: the prop of a requirement to ensure the axial stress, the prop to set perpendicular to the roof, have to meet Angle mountain, mountain Angle to the right, for wants firm, prevent knocking down prop, prop roof and top beam Angle for smooth and using lid with claw, should make the claw card fixed the lace top beam and edge chamfer of the same working face pressure, observation data as the basis of manual and operating practices.
4, prepare to use the hydraulic prop working face, should be used before the use of coal workers for technical training, the basic training content includes: the technical characteristics of the prop, the construction of the working principle and the use of operation methods, and accident elimination methods.
5, according to the working face to establish individual hydraulic prop accounting, accounting content mainly includes: the underground use date, quantity, type, wreck, maintenance time and amount of root, parts replacement number, backbone technical performance measurement data, as well as the working face support working resistance drop, live column under the contract and to observation data and the data of pressure cycles, each class should be detailed records, submitted to the office.
