Safety slogan of mine adit mouth

This topic examines the general provisions of open pit mines. Appropriate flood control measures must be taken for the main entrance and exit, adit mouth, drainage wellhead and industrial site of open pit mine; So option a is correct. In mines that may collapse, waterproof and drainage measures must be strengthened; Surface water and groundwater must be prevented from infiltrating into the stope; So option b is wrong. When the equipment is moving, it is forbidden for people to go up and down, and no one is allowed to stay or pass in places that may endanger the safety of people; So option d is wrong. When there is a side ditch on the road, it should be not less than 1m from the edge of the road surface, but not less than 0.5m from the outside of the side ditch: therefore, option C is correct. When stacking objects on both sides of the mine railway or road, the distance between the edge of the stacked objects and the clearance near the railway building shall not be less than 0.75 meters; So option e is correct.