Chapter 19: Water flow

Style: Science Author: Wen Geng JunchiWords: 2020Update Time: 24/01/12 03:57:34
When Kuang Yan saw Qin He again, he said, "The problem of spore toxins has been solved. Now you can take a rest."

Qin He said: "I think so too."

They return to the company. At this time Deng Fei came over.

Deng Fei said: "There is something that needs to be reported."

Qin He said, "Is there any emergency?"

"Yes, I heard that the rainfall in the upper reaches has increased sharply, and the river flow is very fast, which may cause the flood to continue to impact the levee, and there may be a danger of the levee breaking down. The damage caused by the river bursting is very serious. The rupture or breach of the river levee may cause the river to flood It overflows quickly and forms a flood."

Qin He said: "Then we still need to stay farther away from the shore."

In coastal areas, strong winds and heavy rains from hurricanes or typhoons can cause flooding in coastal areas or estuaries. But this place is far from the coast and is not affected by the typhoon. Sustained heavy rains or large amounts of rainfall in a short period of time can cause water levels in rivers, lakes and reservoirs to rise rapidly beyond their capacity limits, causing flooding.

Deng Fei said: "I don't know if it is because the river is blocked. Obstacles in the river, such as sediments, trees, garbage, etc., may cause the river flow to be blocked, thereby causing floods."

Qin He said: "Is it because of geological disasters? Geological disasters such as earthquakes, landslides, and volcanic eruptions may change the terrain, block rivers, and cause floods."

Kuang Yan said: "What you said reminds me that the house-like plants we saw last time had just grown, right?"

"Or have they grown in recent years? So is their growth due to changes in the earth's crust that have brought them to light? Or is it that their growth has caused changes in the earth's crust?"

Qin He said: "Their growth should not affect the changes in the earth's crust. It is estimated that the changes in the earth's crust come first, which may lead to river diversions or river blockages."

Shi Rui said: "With flooding, some recent construction projects are expected to be stopped."

Deng Fei said: "Yes, some construction equipment projects related to us have also been stopped. Now construction companies are busy undertaking reservoir construction."

The construction of large reservoirs is the core of water storage projects. Reservoirs can store large amounts of water during heavy rainfall, reducing the impact of floods. Reasonable reservoir management is the key to preventing flood disasters. Through scientific reservoir dispatching, the water in the reservoir can be released in a timely manner during rainfall periods to reduce flood pressure downstream. Scheduling needs to be based on factors such as rainfall conditions, river flow, and downstream water demand. The dredging and regulation of river channels are also important measures to prevent flood disasters. Dredging rivers can increase the water carrying capacity of rivers and reduce the residence time of floods. River regulation can build embankments and strengthen river banks to prevent river breaches and embankment failures. Through measures such as afforestation, slope protection, and ditch construction, water and soil erosion can be reduced, the water-holding capacity of the soil can be increased, and the probability of floods can be reduced. Through reasonable reservoir construction and dispatching, strengthening river management and soil and water conservation work, the impact of floods can be effectively reduced and the safety of citizens can be protected. Reservoirs can store large amounts of water, and sluices can control the direction and flow of water. Through reasonable scheduling and management, the water source of the reservoir can be released during the dry season to meet the needs of farmland irrigation and urban water supply.

Flood control dispatch information was playing on the TV. Measures include timely issuance of flood warnings, organizing evacuation of personnel, and strengthening inspections and monitoring.

Floods may have the following adverse effects on water storage projects: Dam breach risk: Floods may exceed the design capacity of the water storage project, causing the water level to rise too fast and the pressure to increase, thereby increasing the risk of dam breach. Structural damage: The impact of floods and water flow speed may cause damage to the structure of water storage projects, such as scouring earth-rock dams, damaging gates, and damaging reservoir embankments. Siltation and accumulation: Floods carry a large amount of sediment and floating objects, which may silt and accumulate in water storage projects, resulting in a reduction in reservoir capacity and affecting the water storage effect. Water pollution: Floods may bring large amounts of sewage, pesticides, chemical fertilizers and other pollutants into water storage projects, causing water pollution and affecting the water quality of the reservoir and the utilization of water resources.

Engineers rushed to design and plan the flood storage and control projects, strengthen the flood resistance of the projects, and prepare for regular maintenance and overhaul to ensure the reliability of the water storage projects.

Managers are strengthening safety education for surrounding residents and staff to improve their self-rescue capabilities and emergency awareness. Ensure that residents and staff near the dam can be evacuated to safe areas in time to avoid casualties. Tell citizens to notify relevant rescue agencies immediately in the event of a critical situation and seek professional rescue and support.

Maintenance personnel are also busy strengthening monitoring and early warning of floods, so as to grasp the dynamics of floods in a timely manner so that corresponding measures can be taken. If possible, take emergency measures to strengthen the dam, such as strengthening the dam's protective wall, repairing damaged parts, etc., to reduce the impact of flood impacts. Set up temporary diversion channels or flood outlets near the dam to guide part of the floodwater to a safe area and reduce the pressure on the dam.

Qin He said: "It is quite dangerous now. We still need to listen to the information in time. If there is any situation, we need to move quickly."

Kuang Yan said: "Then you have to prepare the car. Bring daily necessities to the car in time."

Deng Fei said: "Not only do we need to prepare a car, but we also need to prepare a boat. Is the boat we used to row on the lake last time still there?"

Shi Rui said: "That one is still parked by the lake."

Xia Yueling said: "But if something happens, will it be too late for us to run to the lake?"

Deng Fei said: "Let's wait for the news at home."

Qin He said: "Can you contact the construction company and ask them if they have any new discoveries in the upstream?"

Deng Fei said, "Okay, I'll call and ask."

"Hello, no contact for a long time. Are you working hard to build a water storage project now?"

"Yes, the situation is quite urgent now. We are building new buildings and repairing them at the same time."

"Have you seen what's going on upstream?"

"I have seen that the water is blocked in the upstream area. So when it rains heavily, the water has no place to pour. It does not flow into the flood storage area as expected, but all flows to the downstream area. So it is expected to happen here. flood."

Qin He said: "It seems to be the case. The changes in the earth's crust caused some earth and rocks to squeeze into the middle of the river, blocking the river channel. One result and sign of the changes in the earth's crust is that some gaps are exposed, which is the growth of architectural-shaped plant seeds. come out."

Deng Fei said: "What can we do if we know this? Let's wait for the engineering team to repair the river channel."

Qin He said: "We may be able to help with the stone that can control the flow of water. Then we still need the help of the construction team."