Many places where landslides occur have barrier nets, commonly known as mountain protection nets. They are generally made of high-strength, corrosion-resistant metals or polymer materials and have a wide range of uses.
Almost all mountain road construction requires the use of protective nets, and the required strengths vary. Especially in Yuzhou, this kind of thing can be bought everywhere.
"I took a look," Pang Hongshan said, "If you need to verify it, you need to further excavate the area."
"Hasn't a lot of soil already been dug away?" Bai Song was a little confused. Why was further digging needed?
"Section Chief Bai," said Pang Hongshan.
When Bai Song heard Mr. Pang calling him, he immediately understood what was going on.
Professional matters should be left to professionals. What he said here is just nonsense from an amateur.
"What kind of excavation equipment do you need? What size excavator?" Bai Song immediately changed his tone.
"We don't need an excavator. We need..." Pang Hongshan looked around and said, "We need 10 to 15 workers. Pickaxes and shovels are enough."
"This is simple, too simple," the accompanying local leaders immediately began to make arrangements.
The workers came quickly, about 20 of them, each bringing their own tools.
These people spoke in a heavy dialect and Mr. Pang couldn't understand them, so two policemen helped translate and the excavation progress was quite fast.
Mr. Pang also found a shovel and started digging. The depth he dug was determined by the depth of the digging done by others nearby. Not only that, he also acted as a supervisor.
The workers worked quickly and in less than an hour, they had dug to the depth that Pang Lao required, and then he let these people go first. The local comrade in charge went to settle the bill and sent the person away.
The main body of this mountain is rock. After digging so much soil, it is all rock and cannot be dug anymore.
"Look," Pang Hongshan showed some respect to Bai Song because of Bai Song's previous suggestion: "Although the excavator has dug away extra soil, it can still be determined that the water seepage in this area of the head is much greater than other places. There is no significant difference in the terrain nearby, so the difference in water seepage must be man-made."
"Can pouring water in advance cause a landslide?" Bai Song was a little confused.
"Of course it won't work, but it depends on how the water is added. If just pouring water doesn't work, we can use high-pressure equipment to pump water deep into the ground," Pang Hongshan said. "There are no signs of explosives used throughout the process, but the abnormal water seepage in the upper edge area is very obvious. If we expand the search range, we should be able to find traces of fixed mountain protection nets. The level of the protection net he used is not too low, and the required fixed piles must be driven deeper."
"High-pressure equipment pumping water?" Bai Song measured it with his hand: "Is this a small machine?"
"Impossible," Pang Hongshan said, "To create such a landslide, although the terrain here can create the conditions, it still requires more professional equipment."
Pang Hongshan stepped back, roughly estimated the terrain here, and pointed to five locations: "These five places are most suitable for fixing the net stakes."
Bai Song couldn't see any of the five places that Mr. Pang pointed out, but the others here understood what they should do at this time and took action.
Pang Hongshan himself, still holding the small hammer, continued looking for traces.
"Is this person very professional?" Bai Song asked, "Mr. Pang, according to your experience, what level of professionalism is required to achieve this level?"
"Not necessarily," Pang Hongshan shook his head. "I'm more into theoretical research. Let me give you an example. If you are in a place like this, like now, many places have dug into the rock layer. Can you see the beauty here?"
"Not really," Bai Song didn't understand what was so good about these broken stones. Although the colors were different, they were all stones.
"Look here, the upper part of this stone is a layer of leopard-skin dolomite limestone... Well... You may not understand even if I tell you, but the iron sandstone here is very interesting. Here is a weathering crust. The weathering crust between these two rock layers was caused by the 'Qinyu Movement', which is not easy to see in geology. This small layer represents 20 million years." Pang Hongshan knocked casually with a geological hammer: "It is very common in the east, but not here."
"2000, ten thousand years?" Bai Song was stunned.
"Well, and this crustal movement happened a billion years ago. If we hadn't dug so deep this time, we might not have seen such a beautiful place... Of course, most people don't know this kind of beauty. I think the person who designed it doesn't understand it either, but it actually pumped water to such a depth. The engineering level here is higher than mine." Pang Hongshan stopped explaining: "Although I'm not an expert in construction, I know a little bit. This person may have specialized in road and bridge maintenance. In my personal opinion, this is a very experienced way of doing things, and it doesn't seem like something a young person would do."
Theoretical level and construction level are two different things. A senior engineer may not necessarily know how to mix concrete better than an ordinary migrant worker.
"Then..." Bai Song was about to ask when someone shouted that a buried steel pile was found underground. The rain had covered it with a layer of soil. If one did not look carefully nearby, it would be impossible to find it.
Upon hearing this, Pang Hongshan immediately stood up and walked over there, and Bai Song quickly followed him.
The slope here is quite steep. Pang Hongshan is old and had been squatting on the ground for a long time. When he stood up suddenly, his brain was not supplied with enough blood and he staggered and was about to fall. Fortunately, Bai Song was quick and quickly went over to stand firm, supported Old Pang, and slowly helped him up.
Just now when Mr. Pang pointed out five directions, Bai Song also wanted to go and look for them, but he stayed here because he was afraid that something like this would happen.
“Thank you, thank you.” Pang Hongshan rubbed his temples and smoothed his chest: “I’m getting old…”
Having said this, Pang Hongshan looked at the steep slope here. The soil had been dug away, and all that was exposed were rocks. If he rolled down from here, he would be in trouble at his age!
"I'm fine, I'm fine." Pang Lao closed his eyes tightly and shook his head slightly: "Luckily, I have you. It's good to be young."
"You're welcome. I'll help you over there," Bai Song said.
…
This is a steel bar nail driven into the soil. Just this one steel bar nail can confirm one thing: Lin Liang’s death must have been man-made.
If you find this one, there must be at least one more.
"Inspect the tensile strength of this anchor, conduct a destructive inspection, and check the construction method and construction machinery." Bai Song gave the order: "Open a case immediately. It is not certain yet that it is against Lin Liang. The case is for endangering public safety by dangerous means."
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