Baopingkou

The Dujiangyan Canal Head Hub Project is mainly composed of three main projects: the Canal Head Fish mouth water dike, the Feisha spillway and the Baopingkou diversion channel. These three projects, adopt the scientific method of "diversion and diversion of river, building and diverting water", have a strict structure and perfect layout, forming an organic whole that is interdependent and mutually restricted, and receives the benefits of "draining water and irrigation fields, flood diversion and mitigation". And the project is still playing a role today, known as the "Living Water Museum". It is also the oldest and only large water conservancy project in the world to date, characterized by no dam and water diversion. Aquarius, this is the key to the Dujiangyan project. The Lijiang River is running here, flowing to the vast fields and villages, benefiting all things on earth. Here is the original Lushan (now the Guankou Mountain, Yulei Mountain) stretched to the long ridge of the Lijiang River, two thousand years ago, Li Bing father and son face the unruly Lijiang water, fire attack Yulei Mountain, opened a 20 meters wide, 40 meters high, 80 meters long mouth, because of its shape as a bottleneck and function strange, later known as "bottle mouth". This treasure bottle mouth, known as the "Neijiang water diversion throat", is equivalent to the "control gate", which can automatically control the water intake of the inner river. And the original part of Lushan on the right side of the treasure bottle mouth has 42 steps, which is Li Bing and his son led the working people to open the treasure bottle mouth. The isolated pile after separating from Yulei Mountain, which was irrigated by the Lijiang River Irrigation Plain in the western Sichuan Plain. Because it is separated from the mountain, it is called off the pile. On the one hand, the excavation of the bottle mouth makes the inner river water rush here and be lifted from the pile, forming a ripple and turbulence, so that the water is more clarified, and then the entrance. During the flood period, the Neijiang River will not flood into the narrow bottle mouth in large quantities, so it has to flow back to the river from the flying sand to the outer river, and play a role of restraining gates to ensure the safety of Chengdu Plain. On the other hand, the Neijiang River water flow through the bottle mouth, and then divide into tens of millions of irrigation channels through the large trunk canals. Composing a crisscrossed fan irrigation network, making the western Sichuan plain thousands of miles of wild, agricultural production, become "the country of heaven".

A water inlet cut from Yulei Mountain to the long ridge of the Lijiang River is the "throat" of the water in the Inner River irrigation area. The water flow limit at the bottle mouth restricts the water flow into the Chengdu Plain, and increases the flood discharge effect of flying sand by co-existing high water flow.

I didn’t read this design very well. Maybe I read less, but the scenery is good, the water is clear, the architecture is beautiful, the scenery is very good, and the others are not good to comment on anything. In case you say it wrong, it’s too embarrassing.

In 256 BC, Taishou Li Bing, Yu County, and his son presided over the construction of Dujiangyan Water Conservancy Project. Li Bing first will extend to the Yulei Mountain of the Lijiang River to dig a 20-meter wide, 36 meters long, 18 meters high mouth, the entrance of the mouth is 70 meters wide, the exit of the mouth is 50 meters wide, shaped like a bottleneck, so called "treasure bottle mouth", the water of the Lijiang River will be introduced to the Chengdu Plain from this mouth.

The bottle mouth water intake is between Yulei Mountain and Gaodui. It is an inverted trapezoidal water intake cut by Li Bing when he pioneered Dujiangyan. The bottom width is14.3 meters, the top width is28.9 meters, the height is18.8 meters, and the gorge is 36 meters long. The river bed below Baopingkou is 4055 meters wide and shaped like a bottle mouth. It is the entry throat of Chengdu Plain and the hills of Sichuan. It is called "Baopingkou". The Baopingkou water diversion mouth is an important part of Dujiangyan water conservancy project. The bottle mouth has three major functions, one is to attract water, the second is to limit excessive torrents into the irrigation area, and the third is to limit sand.

Baopingkou (water diversion mouth) is the key cultural relics protection unit in the country. Baopingkou is the first water conservancy project to enter the Dujiangyan scenic spot. In fact, Li Bing manually excavated a water canal less than 20 meters wide, but it is extremely critical that the throat of the inner river water enters the Chengdu Plain, which is used to strictly control the flow of the inner river water into the Chengdu Plain. It looks like a bottle from a high place, so it is named, and it also takes the meaning of "blessing peace". The best location overlooking the bottle mouth is the top floor of Fulong View, where you can see the magnificent scenery of the Taotao River through the bottle mouth. Looking at the rushing down, pure to green Lijiang River, my heart is full of admiration for the wisdom of the ancients.

Baopingkou is a part of the Chengdu Dujiangyan water conservancy project, which was a channel with a width of less than 20 meters that was manually excavated at that year, and can adjust the water intake of the inner river. It overlooks from a high place, like a bottle mouth, the best position to overlook is the top floor of Fulong View, you can see the beauty of the Lijiang River through the bottle mouth.