1. The following main hazard sources and hazardous factors should be considered in the construction of ballast concrete: (1) Cutting debris on the foundation surface may cause personal injury. 2 steel processing, steel welding electric shock injury. (3) The concrete pump pipe burst. (4) When the formwork is transported in reverse, it is overloaded, unbalanced and loosely bound, leading to slippage or rollover. 5] Injuries to operators during temporary storage, transportation and installation of tool guide rails, and 6] Injuries caused by lifting tool guide rails and sleepers. (7) During the falling of the sleeper fixing frame, test the coupling of the spherical groove by hand. Being combined track bent before hoisting, support block and hanging basket connecting bolt is loose, lifting point spacing is unreasonable, and someone operates below during operation. (9) Traffic accidents in the process of logistics and transportation. ⑽ Damage caused by track slab hoisting operation. ⑾ when pouring cement asphalt mortar, the pump pipe will explode to people and people. 2, check the use of electric equipment in the construction process should abide by the safety operation procedures. 3. Before the construction of monolithic ballast concrete, the ditch cover plate in the construction area shall be firmly covered and the sidewalk shall be cleaned. 4, cleaning the surface at the grass-roots level should be sprinkler dust. When washing the basement with high-pressure water, it should be carried out from uphill to downhill, and the high-pressure water gun should not be aimed at people. 5, ballast bed surface chisel wool personnel should wear goggles, gloves and other safety protection articles, chisel wool operation shall not stand around people, so as to avoid splashing concrete fragments. 6. The formwork shall be temporarily bound during transportation on the construction site, and shall not be overloaded, so as to avoid the formwork slipping during transportation. In the process of dismantling and installing the formwork, it is necessary to avoid the formwork from dumping and hurting people. 7. It is forbidden to mix people and materials in transport vehicles, and the speed should not be too fast. In order to ensure that the transport vehicle is in good position and safe in and out, there should be a special person to command it. Set up "Go Slow" signs in grade crossing and narrow construction sites, and arrange personnel to direct traffic when necessary. 8. All kinds of vehicles in the track slab construction area should drive at a speed limit, and it is forbidden to turn around, overtake and meet. 9, tunnel construction, should strengthen the lighting facilities, shall not be hung on the vertical steel or other metal components, wires should be overhead. The tunnel entrance is equipped with protective personnel and keeps in touch with the personnel in the tunnel. Non-construction personnel are strictly prohibited from entering the tunnel. Clear reflective signs with clear channel width clearance should be set on the logistics channel to prevent accidents. 10, elastic bearing shoes should be transported to the construction site after installation in the base, and the installation site should have good ventilation and fire prevention measures. 1 1. Check the safety of lifting rails, sleepers and other operations, and the driver of lifting machinery must obey the instructions. Check the wire rope carefully before hoisting, and then hoist it after confirming that it is firmly bound. When hoisting, the lower operators must keep a safe distance. When hoisting, always check the safety status of wire rope, hook, fixture and hanger, and it is forbidden to stand under the boom. 12. "Sleeper vibration burying method" shall meet the following requirements: (1) During the falling process of the sleeper fixing frame, the joint position of the ball groove shall not be detected by hand, but the falling process shall be observed, and the joint shall be detected with a feeler gauge to make it in place. ⑵ When transporting beams, fixed frames, steel formwork tracks, legs and spare parts turnover boxes, they should be neatly arranged and fixed measures should be taken to prevent sliding damage accidents. 13. The ballastless track ballast bed constructed by "combined track bent method" shall meet the following requirements: (1) The crane running track shall be firmly installed, and the pad spacing and track gauge shall meet the requirements. Before use, check whether the operation system is normal, whether the electric braking system is reliable, the flexibility of hanger lifting points and the uniform distribution of effective lifting points. ⑵ When assembling the combined track bending sleeper on the mobile assembly platform, ensure that the sleeper is closely connected with the hanging basket and the bolt torque meets the requirements. (3) Before lifting the combined track bent, check whether the spacing between lifting points is reasonable and whether the hook is firm. When the gantry crane lifts the combined track bent, no one is allowed to stand below. When the track bent descends, the auxiliary personnel should stand beside the track bent to assist in alignment. 14. When fastening, every two people should be separated by three sleepers, and people should stand on one side of the wrench to prevent collision. 15. Before the ballast concrete reaches 75% of the design strength, it is forbidden to run on the ballast and collide with the track members. 16. When large-scale construction machinery is driving, the lookout should be strengthened, and the construction personnel should have a certain safe distance in front. 17, safety work focus in welding rail construction (1) When checking and measuring the straight seam state of two rails in the process of welding rails, attention should be paid to the surrounding objects to prevent collision with the body due to the narrow working face, and the welder should be controlled to stand safely in the car. When welding, the personnel should stay away from the weld position 10 meters or more to prevent the steel flower from splashing and hurting people. After welding, it is necessary to pay attention to high temperature burns when cleaning the tumor slag of welding machine, and the residue should be collected in an iron bucket to avoid hurting others. ⑵ It is difficult to stand up straight and hold the jack when jacking the rail with a jack during rough grinding and normalizing. During rough grinding, pay attention to the contact angle and strength between the grinding wheel and the rail surface with a portable electric grinding wheel to prevent flying pieces from hurting people. Wear dust cover goggles, work gloves and work clothes when normalizing grinding. When normalizing, pay special attention to the loading of oxygen cylinders and acetylene cylinders in separate cars, and keep the distance above 10 meters. Always check whether the anti-backfire device is in good working condition, and pay attention to the leakage and injury caused by the winding and fracture of various power lines. (3) When the rail-welded vehicle is running, it must be ensured that every four concrete sleepers are equipped with a fastener, and the running speed is limited to 5 km/h. After parking, wheel stoppers should be set in the front and rear directions in time to restore the rail state, and the operation interval can be opened before calling it a day. 18, safety points of concrete ballast bed construction (1) Temporary wooden sleeper stops shall be set at a distance of 15 meters from the working face of concrete ballast bed, which shall be firmly connected with the steel rail. A wheel stopper is arranged on each rail surface, and a red flashing light is hung on the right side. The rail car driver shall not work continuously for 10 hour, and the running speed shall not exceed 15km/h, especially when the working face is 20. ⑵ Track-laying small gantry crane for transporting concrete bucket, after handover, check whether the walking, braking and spreader of small gantry crane are in good condition, whether there are obstacles for hanging cables within the walking line, and whether the state of walking track is within the allowable error range. Pay attention to the lifting distance and speed when two or three gantry cranes start at the same time, and earnestly implement the provisions of operating procedures. (3) The construction personnel of concrete ballast bed must have a full rest, and can only take up their posts after passing the safety technical training and examination, and operate skillfully according to the requirements of operating procedures. Take care of each other when working, pay attention to collision to ensure safety, don't panic when the small gantry crane passes by, choose a safe and wide place to stand well, and ensure the normal passage of the bucket and the gantry crane. 19, safety supervision engineers and site supervision personnel should pay attention to the frequency of safety control during the construction of ballastless track according to the requirements of safety supervision and management system and the actual situation of site construction, issue a written notice of rectification of potential safety hazards for the problems found during inspection, and take measures such as suspending process construction according to the actual situation to resolutely eliminate potential safety hazards until they are eliminated.
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