1. One person holds the manhole cover with a hook or inserts a crowbar into the gap of the manhole cover. At the same time, another person uses a hammer or hammer to gently tap along the edge of the manhole cover to see if the edge of the manhole cover is loose. If there is any looseness, continue to tap with a hammer for a while, and the manhole cover can be pulled open.
2. You can try to use a hydraulic manhole cover opener to open the manhole cover.
3. Use a forklift to lift the hook to open the manhole cover (this method is not recommended as it may cause safety hazards).
4. If it cannot be opened, it is recommended to remove the manhole cover and replace it with a new one.
Reminder: Do not use brute force when manually opening manhole covers. When using hooks, be careful to use your legs and upper limbs. Using force on your waist may cause waist injuries. At the same time, you must prepare labor protection gloves and labor protection shoes, and take protective measures to prevent your hands and feet from being crushed by the manhole cover. Safety first