Safety and waterproof measures for mine rainy season
2. The safety measures to be taken when carrying out operations in areas where water may accumulate mainly include: (1) When shooting, the time of cannoning is extended to at least 30 minutes. After waiting for the location of the gun to stabilize, it is determined whether there is water flow before other operations can be carried out. (2) When shooting a cannon, personnel should stand in a place that is not threatened by water flow, and prevent the sudden accumulation of water in the goaf after the cannon, endangering the safety of personnel. (3) When handing over the shift, the last shift cannot keep coal on the slipway to prevent the water from being infiltrated and softened during the shifting process, forming a coal slurry, which will be placed in the next shift. When coal is used, it causes an accident of water and coal. Third, in the course of the operation, the main conditions for the exploration and release of water are: (1) encountering the old empty kiln and the mine goaf that may accumulate water; (2) When encountering the upper level roadway, it should be prevented from seeping through the main channel ditch; (3) When encountering a borehole, it should be ascertained whether the borehole has accumulated water or communicates with other stagnant water zones. Before exploring the water, it is necessary to analyze and find out the spatial position, water volume and water pressure of the goaf or the old kiln. When exploring the water, all the personnel in the area where the water is threatened by the water level should be evacuated; the water hole must be drilled through the old water body, and the whole process of water discharge should be monitored until the old water is discharged. When exploring the water, carefully check the gas or other harmful gases to ensure that the water is safe to carry out. When the distance from the gob area or the main road is about 20 meters, the technical department or technician should make water exploration measures to start water exploration. When searching for water, each time a group of water-seeking holes is completed, the person in charge of the water-producing water and the technical department shall jointly determine the length of the roadway for the next step. The general rule is to explore 5 meters and dig 1 meter. 4. Before the rainy season, a comprehensive overhaul of the mine drainage equipment and power supply facilities shall be carried out to clear the water tank, the ditch and the sedimentation tank, and conduct a joint drainage test. It is necessary to equip the water tank, water pump and transmission line (two-way) with the mine water inflow to ensure the normal drainage of the mine and meet the drainage demand of the maximum water inflow. The coal mine is located near the surface rivers, mountain torrents, etc., and the wellheads and industrial squares should be built with dams, excavation ditches and other intercepting facilities to prevent surface water bodies from instilling mines. When there is water leakage in the surface water body, coal mining subsidence area, coal seam stratum outcrop, etc., it is necessary to prevent leakage and reinforcement of the leaking water body base. Electric Scooters,Motorized Scooter,Adult Folding Scooter,Electric Moped Scooter Gofunow Tech Co.,Ltd. , https://www.gofunow.com