(1) Water seepage symptoms 1. Water vapor phenomenon of surrounding rock: The rock ( coal ) layer becomes wet, sweating, hanging red, or there is dripping water, water appears; water color hairiness.
2. The pressure of the surrounding rock appears: the top plate is pressed, the sheet is helped, the bottom plate is bulged or cracks are generated (the water sees water in the crack).
3. Environmental status: The air becomes cold, fog, smell, etc.
4. Other phenomena: water in the hole, water in the floor, water in the coal wall, etc.
(II) Mine water hazard prevention requirements (III) Principles for emergency treatment of underground flood accidents 1. The safety of trapped personnel and emergency rescue personnel is given priority.
2. Prevent situational expansion and prioritize environmental protection.
3. It is necessary to understand the location and nature of the water inrush, the estimated water volume, the static water level, the amount of water inrush after the water inrush, the scope of impact, the recharge water source and the influential surface water body.
4. Master the scope of the disaster area, the distribution of the underground personnel before the accident, the location of the mine with survival conditions and possible access to the site, so as to quickly organize the rescue.
5. Organize strong drainage according to the amount of water accumulated and the amount of water inflow, and block the ground supply water source.
6. Strengthen the ventilation in the drainage and rescue to prevent the harmful gas from suddenly coming out from the flooded area, cut off the power supply in the disaster area, and prevent the gas accumulated in the goaf from detonating.
7. During the process of drainage, reconnaissance and rescue, it is necessary to prevent the roof from falling, the bottom from being hurt, and the second water inrush.
8. When transporting and rescuing people in distress, it is necessary to prevent sudden changes in the environment and living conditions that the injured person has adapted, resulting in undue casualties.
2. The pressure of the surrounding rock appears: the top plate is pressed, the sheet is helped, the bottom plate is bulged or cracks are generated (the water sees water in the crack).
3. Environmental status: The air becomes cold, fog, smell, etc.
4. Other phenomena: water in the hole, water in the floor, water in the coal wall, etc.
(II) Mine water hazard prevention requirements (III) Principles for emergency treatment of underground flood accidents 1. The safety of trapped personnel and emergency rescue personnel is given priority.
2. Prevent situational expansion and prioritize environmental protection.
3. It is necessary to understand the location and nature of the water inrush, the estimated water volume, the static water level, the amount of water inrush after the water inrush, the scope of impact, the recharge water source and the influential surface water body.
4. Master the scope of the disaster area, the distribution of the underground personnel before the accident, the location of the mine with survival conditions and possible access to the site, so as to quickly organize the rescue.
5. Organize strong drainage according to the amount of water accumulated and the amount of water inflow, and block the ground supply water source.
6. Strengthen the ventilation in the drainage and rescue to prevent the harmful gas from suddenly coming out from the flooded area, cut off the power supply in the disaster area, and prevent the gas accumulated in the goaf from detonating.
7. During the process of drainage, reconnaissance and rescue, it is necessary to prevent the roof from falling, the bottom from being hurt, and the second water inrush.
8. When transporting and rescuing people in distress, it is necessary to prevent sudden changes in the environment and living conditions that the injured person has adapted, resulting in undue casualties.
Zhe Jiang RAF Electric Appliance Co.,ltd. , https://www.raf-china.com