According to Xue word (2009) No. 53 notice business contacts, in order to ensure the 2106 uncovering coal conveyer road safety, I need to drill drainage construction team field, in order to ensure construction safety and quality of the preparation of this special construction technology security measures. Gear Joint Robot Automatic Production Line Gear Joint Robot Automatic Production Line,Gear Joint Robot Automatic,Dry Gear Hobbing Machine,Gear Making Machine Zhejiang Toman Intelligent Technology Co., Ltd , https://www.tomanmachines.com
Second, the construction method Drilling and boring construction is carried out by drilling and blasting method, performing smooth blasting, opening and strengthening support, permanent support to keep up, manual slag removal, and then belt transportation. (1) Blasting operations Three views of blasting operations b) Eye drilling, charging, and in-line construction process 1. Peripheral construction process peripheral eye → sulcus eye → bottom eye → auxiliary eye 2, the construction process of the charge The first step: check the hole. Insert the gun into the blasthole before charging, check the depth, angle, direction of the blasthole and the situation inside the blasthole; The second step: clear the hole. For the blasthole to be charged, the coal, rock and water in the blasthole must be blown off with a pressure air tube to prevent the coal rock powder from being clogged, so that the medicine roll cannot be closely connected or can not be attached to the fundus; The third step: charging. Charge the drug according to the amount of charge and the number of detonators in the blasting instructions; The fourth step: sealing the hole. Clay mud or a cannon made of non-combustible, malleable loose material. 3. Blasting requirements (1) The blasthole utilization rate is high, the blasting material consumption is low, and the positive charge is blasting forward; (2) The degree of blasting block should be uniform and the size meets the requirements of rock loading, which is conducive to loading and transportation; (3) The explosion pile is concentrated, the blasting height and the blasting width meet the requirements, and the flying stone distance is small, and it cannot damage other equipment. 4. Blasting measures (1) Strictly press, charge, connect, and shoot according to the instructions of the blasting chart; (2) During the construction process, the amount of blasthole charge and the distance between the peripheral eyes should be increased or decreased according to the hardness of the surrounding rock; (3) In the construction process, the “five nos†system should be adhered to, that is: no blasting chart is not allowed to fix the eye position, the indefinite eye position is not drilled, the drilling is unqualified, the charging is not correct, the charging is not correct, and the blasting quality is unqualified. Not accepted; (4) When the top of the top is broken, it is necessary to insist on knocking the top when drilling the hole at the same time, and the peripheral eye distance is reduced to 300mm, and the surrounding eye dose is reduced to 1/2 medicine roll, and the medicine roll and the gun mud are not allowed. When you reach the bottom of your eyes, you should put a hollow cannon. Permanent support quality requirements 1. Quality requirements of anchors (1) The anchoring force of the anchor must meet the design strength requirement, and the top and bottom anchors should be no less than 10 tons. The torque assisting anchor is not less than 100N.M; the top anchor is not less than 140N.M; (2) The anchor rod is anchored in the vertical top plate, the angle is not less than 75°, and it is strictly forbidden to penetrate the skin, the bedding layer, and the anchoring rod along the crack; (3) The specifications, model and material strength of the anchor and pallet meet the design requirements, the pallet should be close to the rock face, and the exposed length of the bolt is not more than 50mm; (4) 3 resin bottles per eye; (5) The spacing error between anchors does not exceed ±100mm; (6) The anchoring area of ​​the anchor tray is not less than 2/3 of the pallet area; 2. Quality requirements for anchor net construction (1) The anchor net must be laid flat against the top plate and pressed under the anchor beam; (2) The overlap between the net and the net is not less than 100 mm; (3) The spacing of the wire joints of the mesh joint portion is not more than 200 mm; (4) The wire of the anchoring net is not less than 12; (5) The overlap length of the anchor beam and the anchor beam is not less than 100mm. Construction quality requirements for anchor cables (1) The exposed length of the anchor cable is 100-300mm; (2) The anchoring length of the anchor cable is not less than 2000mm, and not less than 6 K2335 resin anchoring agents; (3) The initial anchoring force of the anchor cable is not less than 20T; (4) When constructing the anchor cable, the driving face must be equipped with an anchor cable to pull the jack. 4, the quality requirements of shotcrete (1) Spray the slurry to be evenly mixed, the spray surface should be flat, strict and solid, and it is strictly prohibited to wear bare feet and skirts; (2) The slurry ratio of shotcrete should reach cement: yellow sand: stone is 1:2:2 design requirements; (3) Shotcrete to find the bottom corner of the clean roadway, requiring straightness, and it is strictly prohibited to stretch the leg; (4) Spraying should reach the design thickness of 100mm; (5) The spraying method adopts the method of pulling the wire to ensure that the spray surface is flat, and the width of the roadway meets the design requirements; (6) Rinse the rock face or the initial spray surface before spraying and before re-spraying. V. Security assurance measures 1. When multiple wind drills are drilling at the same time, it is necessary to divide the area, and to make the drilling tools, set the person, and set the order of the eyes, and do not allow cross work. 2, drilling must use wet rock drilling, dry eye is strictly prohibited. 3. The gunners must undergo special technical training, and the gunners can be coordinated from other district teams for shooting operations. 4. The shooting operation adheres to “one shot and three inspections†and “three-person chain system†to check the gas concentration in the four yards. When the gas concentration in the air flow is less than 0.8%, the shooting operation can be carried out. 5. Before the shooting, the comprehensive excavator and control equipment, Fengshui pipeline, air duct, cable and electrical equipment must be covered with belts, slabs and stones to prevent the gun from collapsing. 6. Set the warning to set the gun, set the warning at the intersection of the 2106 machine lane moving yard gas pumping station and the 2106 machine lane return air lane and the total return air lane. 7. The withdrawal scope is that all personnel within the above warning zone must be evacuated outside the warning line. 8. The working place uses hydraulic single column and large plate to cooperate with temporary support. 9. Before hitting the eye and before the anchor support, stick to the top and find out the live rock. 10, the use of manual slag, belt transport. 11. Support in time after the gun, and it is strictly forbidden to work on the top. 12. The operator must study this measure. 13. Before the shot, after the shot, before the shot, open the water curtain at the inflection point, sprinkle water to remove dust. Other unfinished matters are implemented in accordance with the Coal Mine Safety Regulations and leadership instructions.
Safety Technical Measures for 2106 Machineway Drainage Drilling Site Construction