Uncle Jiu and other 113 newly recruited miners, together with 16 technicians from the engineering department, took the elevator to the mine about 370 meters deep to conduct temporary inspections and maintenance of the mine passages, mining equipment, and pipelines.
This is a coal mine with deep mine tunnels and dim light. After everyone arrived at the work area, people from the engineering department temporarily assigned a team to Uncle Jiu and the others, and began to inspect and maintain the tunnels in an old-generation-new method.
It is necessary to mention here that due to the tropical rainforest climate along the coast of Longcheng, the natural conditions for mining are very variable. For example, this emergency repair was in response to a sudden heavy rain.
Heavy rains may cause landslides, mudslides, and underground rivers to burst their banks. These situations may not affect ordinary people, but they have a great impact on mines.
For example, if you dig a mine in the mountains and do semi-open-pit mining, but suddenly there are three consecutive days of heavy rain, causing mudslides or mountain landslides, the rock layers and soil layers that are forced to move may deform. Once they are squeezed,
The mine operation area will become very dangerous, and this series of natural situations full of accidents cannot be calculated by any precision instrument.
With advanced equipment, it is impossible to monitor soil movement, the hardness of rocks in the mountain, etc., so temporary overhaul and maintenance are also essential qualities in the mining industry.
…
In the main tunnel of Mine No. 03, Uncle Jiu, who is over 50 years old, has been following the engineering department for maintenance because of his rich experience.
A group of people worked in the tunnel for about half an hour and found no abnormalities. The main tunnel wall was very solid and the data of various testing equipment were normal.
"Gong Li, it's no problem." A young man wiped the sweat from his face and said softly: "Fill out the form and report the values."
Engineer Li is the person in charge of Tunnel No. 03 of the Engineering Department. He drank some wine before going to bed at night. Although he was sober now, his eyes were still red.
"Go and count the values in each work area, and I'll report them together, otherwise the monitoring side will have to wait." Engineer Li patted the dust on his body, took the walkie-talkie and shouted: "Equipment maintenance team, hurry up and do it too.
Send the numerical report."
"Tap!"
Everyone was preparing to report the values. When they were finishing their work, there was a sound of footsteps, and a young man from the engineering department rushed out from the inside: "Worker Li, there is water seepage in Section 223!"
"Ah?" Li Gong was stunned for a moment.
"On a small scale!" the young man added.
"Let's go over and have a look!" Li Gong responded and led everyone towards the depths of the tunnel.
About three minutes later, near the equipment storage area at the corner of a main tunnel, Engineer Li climbed up the ladder himself, held a flashlight, and shined it on the ceiling at the top of the tunnel.
In the gaps between the cement boards, there is water visible to the naked eye, dripping down in a streamline shape, but the density is not high, just like the dripping tap water flowing in the faucet just after the water supply was stopped.
Gong Li was sweating on his forehead. He turned around and asked in a low voice: "Isn't there a test here?"
"It was tested before and there is nothing abnormal. The underground river is not here either!" the person in charge of this area replied.
"Here, get two ladders, get two people up, snap the boards together, and try to divert the flow." Gong Li has been doing this for a long time, and he is also very experienced.
Everyone listened and obeyed, and two workers also climbed up on the ladder, and opened the spout a little by stacking cement boards.
"Si!"
The water flow was getting faster and louder. Li Gong stood under the ladder and watched, listening to the movement on the upper floor of the ceiling. He felt that there was not much change.
After five minutes, the water flow decreased significantly and finally turned into dripping water.
Everyone breathed a sigh of relief when they saw this scene. Li Gong looked gloomy and pointed at the person in charge of this area and cursed: "Young man, look how wet the ground is? This area has obviously been leaking for more than ten hours.
Okay, how did you check it out last time you left your post? You don’t want to do it anymore?”
The person in charge lowered his head: "I... I really didn't see it when we left, and the data was normal."
"I'll write a report later." After Li Gong finished speaking, he was about to ask everyone to leave.
At this moment, Uncle Jiu stepped forward and asked: "Gong Li, there is water up here. It's not a trivial matter. Are we...!"
"I'll tell you how water is formed." Li Gong interrupted directly and replied: "When you build a tunnel, you need to smooth the rock layer above it to make its surface smooth, but after the cement board is in place, no matter how hard it is manually
No matter how you deal with it, there will still be a little gap left in the mezzanine. People, lights, and equipment in the tunnel will all generate heat, which will increase the temperature of the upper layer and cause moisture to return. Therefore, it is normal for some accumulated water to flow into the gap.
.”
Uncle Jiu frowned and did not respond.
Li Gong said very professionally: "Did you see it? After the drainage just now, the water has flowed cleanly, which shows that it is just a fixed amount of water storage in the gap! Making this judgment requires practical experience. You will also note it for me in the future.
Come on, there is water leakage in the tunnel. You have to judge by the speed and density of the water flow whether it is natural water seepage or artificially caused...!"
“Bang!!”
Just as he was saying this, there was a sudden muffled sound above the tunnel.
Everyone immediately raised their heads when they heard the sound.
"There is something strange in the rock layer!" a young member of the engineering department blurted out.
"It's weird, don't make a fuss!" Li Gong was very confident, just like a fisherman who walks by the water all year round. He felt that his water skills were enough to deal with any unexpected situation.
"Bang bang!"
There were two more very dull noises.
When Uncle Jiu heard the sound, he immediately said: "Something's wrong! It's something strange!"
This time Li Gong didn't argue and ran forward a few steps!
Five seconds later, a cry suddenly came from the deep mine tunnel: "Water leaked!!! The board at section 225 collapsed!! There is water, water!!"
"Boom!!"
A sudden collapse sound erupted in the long, narrow and dark tunnel. Li Gong stood at the fork in the road and looked up. He saw that the tunnel was three to four meters high, and it was instantly filled with rolling water!
Uncle Jiu turned around and ran away: "Son, son!!"
…
Ground, monitoring department.
"Report, report!" A technician rushed into the office and shouted: "We have detected abnormal movement in the rock layer above Tunnel 03, and there is a large amount of water flow!"
"flap!"
The person in charge of the monitoring department stood up: "The source of the water flow?!"
"It's an underground river!"
"The water from the underground river cannot reach Tunnel No. 03!"
"It may be that heavy rains and rising water have caused changes in the soil and rock layers underground, and the water has opened several gaps... Our monitoring maps here are all red...!"
"Made!"
The person in charge of the monitoring department turned around and ran away.
In the tunnel, Uncle Jiu, who was running to find his son, turned around and saw that the tunnel behind him had begun to collapse irregularly!