What are the hidden dangers of rivers?

Question 1: Brief introduction of the river, the route that the river flows through, usually referring to navigable waterways. Yellow River Waterway, another place name Waterway.

Question 2: Does the country have laws and regulations to clean up rivers? According to the Regulations of People's Republic of China (PRC) on River Management

Chapter IV Removal of Obstacles in Rivers Article 36 In accordance with the principle of "whoever sets up obstacles will remove them", the river authorities shall put forward plans and implementation plans for removing obstacles, and the flood control headquarters shall order those who set up obstacles to remove them within the prescribed time limit. If it is not removed within the time limit, it shall be forcibly removed by the flood control headquarters, and all the removal costs shall be borne by the obstacle setters. Article 37 For bridges, approach roads, wharves and other river-crossing engineering facilities that seriously block water, according to the flood control standards stipulated by the state, the river authorities shall put forward their opinions and submit them for approval, and instruct the original construction unit to rebuild or dismantle them within the prescribed time limit. If flood control safety is affected in flood season, it must obey the emergency decision of flood control headquarters.

Question 3: What are the hidden dangers of outdoor activities? The hidden dangers of outdoor activities mainly come from the following aspects.

1, human 2, environment 3, climate 4, mixed factors

First, leave the team

In the wild, leaving the team is very dangerous.

In order to avoid this situation, we should repeatedly emphasize discipline before departure; Arrange a deputy team leader to postpone.

When individual players temporarily leave the team due to physical decline or other reasons (such as going to the toilet on the way), they should immediately inform the front players to rest in place before stopping, and arrange special personnel to accompany the individual players who leave the team. In any case, there must be more than two players, and it is forbidden to act alone.

At the same time, be prepared to leave the team in case:

1, all team members must be clear about the daily journey and the time to reach the destination, and can't rely entirely on the team leader and blindly follow.

Everyone should bring necessary personal equipment, such as map, compass, kettle, food, lamp, life-saving box, etc. , and must not appear many people use a device.

3. In case of leaving the team, if you are sure that you can continue to walk to your destination, you must continue to walk until you meet your teammates (Editor: Not recommended); If you are physically limited or panicked, stay where you are, and then try to go back to the group route or the last campsite to find shelter and wait for the rescue of your teammates.

4, the team leader should always pay attention to count the number of people, once found that someone left the team did not return, should immediately arrange the whole team or wait in situ or send someone to search.

Second, get lost.

In the lonely wild environment. Especially in the forest where shrubs grow or where there are big stones, it is easy to get lost unconsciously because you can't see the footprints clearly. Sometimes you may get lost in the rain, fog or evening because your vision is not wide.

When you get lost, don't walk around in a panic, which will only make you more lost. First, you must be quiet. Take a break. Then, try to find the place where you are confident to find it. Mark along the way. And record the location of these marks in the notebook.

In order to avoid getting lost again, go back to your confident place and try again in the first direction. Mark along the way and pay attention to the surrounding terrain, landforms or natural objects until you find the right direction and send out a distress signal at the right time.

3. Failure to arrive at the camp as planned.

When doing outdoor activities, if it is later than the scheduled time and it is dark the day before yesterday, the following measures should be taken:

(1) If the distance is obvious, the current position is determined, and it is not far from the destination, you can light the light and move on.

(2) However, if there are other unfavorable circumstances, such as rain, the temperature drops, or you get lost and can't go back to your original place, or some players are unwell. Or it is dangerous to move in the dark, so we should plan ahead and decide to spend the night in the local area. At this time, if you have a tent and find a place to camp, you can camp for the night in the usual way. However, if you can't camp without a tent or on a slope, wear as many clothes as possible and keep warm. If you bring food and a stove, you can adjust your meals.

(3) In case of emergency, get into the habit of bringing enough water and emergency food.

Fourth, meet poisonous snakes.

When you meet a poisonous snake in the wild. The following situations often happen: accidentally stepping on a snake; Grab the branch and touch the snake; I found a snake when I packed my backpack in the morning. Wait a minute.

This is basically caused by pedestrians breaking into snake territory. These unexpected contacts will cause great panic, and once bitten by a poisonous snake in instinctive self-defense, it will be very dangerous. The measure to prevent being bitten by a snake is to prepare a crutch and startle the snake while walking, because snakes rarely attack humans actively and leave with interest when they are frightened. If you find a poisonous snake, you'd better avoid it. This is the best way to avoid biting. In addition, when doing outdoor activities, especially in places where snakes often haunt. Just put on your hat, long-sleeved coat, trousers to protect your feet and strong boots. Bring snake medicine. Catch or kill poisonous snakes if necessary. Try to hit or control the snake's head with stones or "Ya"-shaped branches, try not to touch the snake with your hands, and put the snake in a cloth bag. Because the fangs of poisonous snakes bend inward, it is not easy to hurt the people in the bag (note: catching snakes is dangerous, so don't try it easily)

Five, encounter wild animals

Except hungry carnivores or wounded beasts. Generally, animals seldom take the initiative to attack humans. They won't attack as long as we don't invade them. However, it was me who met on the narrow road > >

Question 4: What are the main hidden dangers in the middle reaches of the Yangtze River? The main hidden danger in the middle reaches of the Yangtze River is sediment deposition.

The annual sediment discharge in the upper reaches of the Yangtze River is 5. 12× 108 t, which is fed into the middle reaches through Yichang. The annual sediment discharge of the main stream and tributaries in the middle reaches of the Yangtze River is about 0.80× 108t. About 1.24× 108t of these two parts were deposited in the rivers and lakes in the middle reaches, with 4.68× 65438+. Deposited in rivers and the Yangtze River Delta or into the sea. The sediment in the middle reaches of the Yangtze River is generally more silted than scoured, but the geographical distribution, time distribution and cross-sectional distribution of scoured and silted river bed are unbalanced. There are many or balanced scouring and silting in Yichang-Chenglingji section and Jiujiang-Datong section of the Yangtze River. Siltation mainly occurs in Luoshan-Wuhan-Huangshi section of the Yangtze River, Dongting Lake area and Poyang Lake area. Even in the main silted river reach, there are local time periods and river reaches dominated by scouring. The river where the main flood is located is mainly scouring, while the beaches on both sides of the river or between the rivers are mainly silting, forming a high and flat floodplain, which is often artificially transformed into dikes. The reason of Jianghan Ping in the north of Jingjiang River is that the levee is separated from the Yangtze River, and only a small amount of sediment is replenished by Hanshui River, which is very small, plus the cumulative effect of tectonic subsidence. Most of its ground elevation is several meters lower than that of mainstream beaches. The siltation of Luoshan-Wuhan-Huangshi reach caused the flood level in this reach and above to rise. Scouring and silting in the reach of the main stream turned the typical shape of the middle reaches of the Yangtze River into deep valleys and Gao Man beaches, and the plains in the dikes were protected by dry dikes. This section is the reason why the water level keeps rising under the same amount of water during the flood. High water level requires high dike to prevent blockage, which increases dike pressure and head pressure. It is easy to cause piping, leakage and other dangerous situations. The height difference between the flood level and the tectonic subsidence plain is increasing. After the completion of the Three Gorges Project, the water level in the middle reaches will be greatly reduced due to the sediment retaining function of the reservoir and the scouring depth of the river at the same discharge, but the scouring amount from Chenglingji to Wuhan is very small, which can not solve the problem of sediment deposition in this section and the following sections. Therefore, the flood disaster and related environmental problems caused by Jiang Hanping's topography with lower flood level will remain a major hidden danger in the middle reaches for a long time.

Question 5: What are the hidden dangers of the Three Gorges Project? 1\ Three Gorges migration will bring environmental protection and social problems.

After millions of new immigrants move into the Three Gorges reservoir area, so many immigrants will have to live here, and the limited arable land will inevitably be unbearable, forcing new immigrants to open up wasteland all over the mountain, intensifying the destruction of natural vegetation, worsening soil erosion, and accelerating the sedimentation of the reservoir. Once the forest vegetation in the reservoir area is destroyed, the habitat of biological population will also shrink, and the ecological environment in the Three Gorges area will inevitably fall into a vicious circle.

2. The Three Gorges Reservoir itself will worsen the ecological environment.

Hydropower itself may not directly cause pollution, but reservoirs built for hydropower may cause serious environmental pollution. Building dams and using hydropower will not only create new pollution sources, but also turn some valuable and reusable resources into endangered resources or make them extinct.

3\ Siltation in Three Gorges Reservoir poses a serious threat.

The problem of sediment deposition in the Three Gorges has always been the focus of public attention. Can the dam really solve the problem of stone sediment deposition? Mr. Huang Wanli asserted that the harm of sediment deposition in the Three Gorges is not sediment, but pebbles. After the dam is repaired, the pebbles discharged from Kuimen every year will not be discharged. Chongqing Port may be blocked within 10, and it will extend upstream year by year, flooding Jiangjin and Hechuan areas in flood season.

4\ The Three Gorges Reservoir cannot have both siltation prevention and flood control.

Because the Three Gorges Reservoir relies on flood discharge to prevent sediment deposition in flood season, it is practically impossible to store water for flood control in flood season. If the Three Gorges Reservoir wants to store flood water in flood season, it must reduce the amount of underwater discharge, so a large amount of sediment brought by river water can not be discharged from the reservoir in flood season, and serious siltation of the reservoir can not be avoided. In a word, if the Three Gorges Reservoir is for flood control, the reservoir will be silted, and if it is for flood control, the downstream will be threatened by flood.

The Three Gorges Project will make navigation on the Yangtze River more difficult.

The Yangtze River is a busy waterway. You could have sailed directly from Shanghai to Yibin. After the completion of the Three Gorges Reservoir, the navigation conditions will obviously deteriorate. It is planned to build a five-level lock on the Three Gorges Dam. As long as one gate is broken, the five-level lock will be completely paralyzed and navigation will be completely interrupted.

6. The Three Gorges Project will induce various geological disasters.

In the construction history of large reservoirs in the world, there have been many cases of reservoir-induced earthquakes. After the impoundment of the Three Gorges Project, shallow karst collapse and reservoir bank adjustment will lead to microseisms and extremely microseisms.

The Three Gorges Project will submerge many cultural relics and historic sites.

Money can't make up for the loss of a large number of precious cultural relics in the Three Gorges reservoir area. Famous historical sites at home and abroad, such as Du Feng Ghost Town, Fengjie Bai Di, Zhangfei Temple, Quyuan Temple, Zhaojun's hometown, etc. , will be flooded, nothing. How will these irreparable losses be estimated?

8\ Corruption is easy to occur in the project, which will be greatly deteriorated.

Such a huge project and such a large amount of capital investment have always been a hotbed of corruption. The Three Gorges Project takes a long time, and it is difficult to manage every link in the whole project by experience.

9. The Three Gorges Dam can easily become a military target.

From the perspective of national defense, the dam is one of the main targets in military confrontation, and it is also one of the main targets of * * * destruction and intimidation. In international military and political competitions, the party that owns the dam is in a passive position.

However, it is worth noting that these problems have attracted great attention of leaders at all levels, hoping to be solved.

Question 6: Where should I react if the quality of water conservancy projects is not up to standard? Five flood control measures have been taken recently. River embankment repair. The river behind my house (1) has great security risks. Solution: Team A repairs the river x meters every day.

From the meaning of the question, we can get:

120/x= 150/x+20

Solution: x=80

After investigation, x=80 is the solution of the listed equation, which accords with the meaning of the question.

80+20= 100 (m)

Answer: Team A repairs 80m every day, while Team B repairs 100m every day.

(2) Solution: Let this section of the river be x meters long.

From the meaning of the question, we can get:

(x-40/80 -3)× 100+60=x

Solution: x= 1 160.

1160-40/80 =11(days)

Answer: It is planned to complete the task in 1 1 day, and the length of this section of the river is1160m.

Question 7: What policies and regulations should be used to punish farmers for occupying river courses, causing potential safety hazards? Are there any relevant legal provisions that can be convicted? 1, the township * * * has no right to punish the farmers who occupy the river, and the punishment for occupying the river is under the jurisdiction of the river authorities at or above the county level. The township * * * may request the river authorities at or above the county level to handle it, or directly bring a lawsuit to the people's court.

2 "People's Republic of China (PRC) River Management Regulations" Article 44 in violation of the provisions of these regulations, one of the following acts. The local people's river authorities at or above the county level may, in addition to ordering them to correct illegal acts and take remedial measures, also impose warnings, fines and confiscation of illegal income; The relevant responsible personnel shall be given administrative sanctions by their units or higher authorities; If the case constitutes a crime, criminal responsibility shall be investigated according to law: (1) Abandoning or stacking objects that hinder flood discharge within the scope of river management; Planting trees or tall plants that hinder flood discharge; Building dikes, water blocking channels and roads; (2) Building houses, grazing, digging ditches, drilling wells, digging pits, burying graves, drying grain, storing materials, exploiting underground resources, conducting archaeological excavations and conducting fair trade activities in dikes and berms; (three) river regulation or construction of water engineering buildings and other facilities without approval or in accordance with the flood control standards and engineering safety standards prescribed by the state; (4) Sand mining, earth borrowing, gold panning, sand mining, silting, blasting, drilling and digging fish ponds within the scope of river management without approval or in accordance with the provisions of the river authorities; (five) without approval, storing materials, building factories or other building facilities, exploiting underground resources or conducting archaeological excavations in river beaches; (6) Reclaiming lakes and rivers in violation of the provisions of Article 27 of these regulations; (seven) unauthorized felling of revetment trees; (eight) in violation of the provisions or instructions of the flood control headquarters during the flood season.

3. If the act of occupying a river course does not constitute a crime, it depends on whether there are other specific acts, such as illegal dredging and illegal logging.

Question 8: Which department owns this river? 10, the ownership of the river does not belong to any department, but belongs to the state.

The Property Law clearly stipulates that in Article 46 of the Property Law, mineral deposits, currents and sea areas belong to the state.

The State Council water administrative department is the competent authority of rivers in China. The water administrative departments of provinces, autonomous regions and municipalities directly under the Central Government are the river authorities within their respective administrative areas.

Question 9: Who should be in charge of the mayor's hotline office because the river is polluted by garbage?

Since the construction of Xiang-Yu double-track railway, the water conservancy bureau of our city has been focusing on supervising and investigating the slag abandonment behavior of construction units and the implementation of soil and water conservation plans. Eight copies of Notice of Rectification of Water and Soil Conservation Scheme 18 and two copies of Notice of Administrative Punishment 12 have been issued to the project owner and the construction team, and 30 cases of water and soil conservation have been investigated and dealt with. At present, most of the retaining walls of 49 waste dumps along the line have been completed, and the dam walls of seven waste dumps with a large amount of waste, such as Wulangxi, Xinlizixi and Goujiaxi, are under construction, and the design scheme of Zitongxi export waste dump is being improved. In addition, in order to ensure the safety in the flood season, the Water Conservancy Bureau of our city has formulated a demolition plan and an implementation plan for the waste residue field with great security risks, and reported it to the municipal flood control headquarters.

Wanyuan people * * *

Press release issued on 2 1 May 2007

[This post was edited by the author in May 2007 -2 1 15: 07: 05]

Question 10: Is it illegal for citizens to fish with nets under urban rivers? Are there really no security risks? Not illegal, there are security risks.