Dragon creation

In the distant geologic time, the north China plain is a huge gulf. The waves of the sea one thousand beat taihang montain was also beach, don't know which one day, carrying a big river ShaDong, along the east Asian continental margin fluctuation aspect, wandering around, and endless sea reclamation. The world's largest loess plateau, for this river continuously provide the sediment. Water and sediment movement with the great course, coastline one metre forward one meter, the east longitude 114 degrees 119 degrees till today.
To the western han dynasty, this article in the water of the river, and has a unique name, the Yellow River. From the river to the Yellow River, the Chinese civilization since then have a mass-tone attune. Yes, the blue huge gulf disappeared, instead of 25 square kilometers of fan plain. It is in such a unstable alluvial fan, the Chinese civilization get a hyperstatic growth structure. From the Yellow River middle reaches unearthed yangshao culture, to anyang yinxu discovered inscriptions on oracle bones, the Chinese civilization first light, it rises in the river on the horizon. The Yellow River brings fertile soil, ice age after the mild climate, attract all the tribe's people came from far and wide to and till the settled, lived. Hence the mulberry field of melons, cottage market town, palaces and gardens, A city and traffic; The fate of the breach and closure; A TangYaoYu shun, four great inventions, tang song; Also had the zhongyuan as the political and war. The ancients said: river out of the kunlun mountains, the China, note the bohai sea. As the center of the farm belt of east Asia, China, zhongyuan, middle-earth is ancient Yellow River middle and lower reaches of pronoun, the Chinese civilization so along the Yellow River grow up.
For many years, this is one of the Chinese nation to bring opportunities and well-being of the lifeline of the river, the Yellow River in the huge arms, the Chinese nation shining, self-reliance among the nations of the world, this is a golden time and space stage.

Suspense river

Of course, this is a known as "China's suffering" river. As the population increases, the iron invention, expand cultivated land, more and more sediment deposition in the bed of the lower reaches, the river is more and more high flood top to heaven. Then, HuangHeYou the second name, hanging river.
In Yellow River levee and bed than high dangerous competition, defeated, always stand in the back of the dike human. Three years two breach, one hundred a diversion. A cycle, a everlasting cycle, cycle, wandering in the heart of China. People get used to the side of this great river as less pressing. Later will be different, the second half of the 20th century, along with the industrialization and the progress of science and technology, with high dam in ShangZhongYou canyon stands up, people believe that "saints out, HuangHeQing", and the shout loudly "conquer the Yellow River" slogan, flood peak day by day in tantra change, and the power to rapidly increase, irrigation area of duplication expand, flood finally didn't temper. At the same time, the river has soured impermanence, or even dying, can not find the original scene. The ability to make the bed was badly damaged, a large number of sediment accumulation, channel deformity development. According to the measurement, kaifeng the following reach, already all degenerate into secondary suspension river ". HuaYuanKou the river flow capacity in the 80 s, the 6000 flow down to less than 3000 flow, bayonet reach only 1800 flow in a tank. The Yellow River on the horns of a dilemma to underwater, channel in and don't rush, increase suspension river crisis. Water, river and can hold, yellow threat even embankment safety. Although the Yellow River 50 years always calm, but the second half of the 1990 s happened a series of flood disaster warning people, regardless of the lower, middle, or upstream, all through the alluvial plain of the river, the river forms has entered into the greatest risk period, decades of water conservancy project governance mode, is to accept the reality of harsh torture, the Yellow River where to go? A cross-century sphinx mystery.

When u look back

Through the ages, since people during a flood, and found the sediment continuously to the influence of the downstream channel after flood and sediment about the future, they produced different river regulation thoughts and river regulation system. The end of the primitive society, dayu implementation "drain sichuan guide hysteresis," vicious nine ze, drain JiuHe, fixed kyushu. Western han dynasty, jia let put forward three river management strategy, the proposal of the Yellow River to implement artificial diversion or baffle put in. In the northern song dynasty, RenBo rain claims, wide set levee, and block the flow of water. Ming and qing dynasties, in order to PanJiXun primarily river management elites, vigorously implement the "beam water tapping sand". "Beam water tapping sand" mainly through the constriction river cross section, increases the flow rate, improve water carrying capacity, from the horizontal direction will the sediment transport. "Wide river solid barrier" argue that the embankment to stay away from the main tank, protect the bigger barrier distance, let the flood overbank, sediment siltation for the LiuZu space. In 1953, HuangWei director WangHuaYun put forward "storage block sand", namely, a steady water storage, section block mud, that is, through the water and soil conservation and a large number of building the uprising reservoir, the water together with sand interception in plateau and gully and water pool, but sanmenxia reservoir high water use happened after serious silting and backwater flow backward, to established technical route, puts forward the challenge, WangHua aiming cloud and policymakers recall a painful experience, adjust the train of thought, a new strategy aiming formation, this is used to defense flooding on the upper elam, cross-strait points hysteresis, which is used to solve the sedimentation of the "block", "line" and "put", "tone", "dig", hail need enough storage and discharge need enough river power, how to get a reasonable dynamic and flood process? A and a high dam construction, make the Yellow River more than 90% of the runoff area under control, river basin due to the economic and social continuous power and rapid development, but the upstream water level harmony is high, the downstream water cut, channel malignant siltation, also is the indisputable fact. It is these stair distribution of reservoir group, reserve storage and decomposition of natural river the great vitality. Shall the doer who tied the bell, whether through these reservoir energy realignment, mix out suitable water sand relationship, shaping reasonable artificial peak, blunt sediment, pull channel, for the mother river fall hematic fat, the tree souls, back to life?

Water-sediment regulation

The water-sediment regulation, it is real-time scheduling upper reaches and reservoir impoundment, the relationship between water and sediment artificial restructuring, put into lower peak to channel happen scour, and promote the benign development of the river. It seems to many people, this is a fantasy color with the idealized scheme, block, platoon, put, adjustable, dig, although five word policy, has clearly written into the reply of the state council of the Yellow River basin the key management planning ", but only this a tuning word, always covered the veil of mystery. Because of the space scale is big, rainfall regime, and the river clear, water regime, fast changing, the water-sediment regulation test is full of uncertainties. Therefore, for a long time, it was almost is just a legend of the flood process, it is a crazy and fear of scientific myths. Begin from 2002, three years of trying to grope, three years of hurricane lunge, myth into a reality, this is the first time in the history of thousands of kilometers of reach, the 1:1 prototype testing. The Yellow River revival, panic, tempted restore their original wild. Xiaolangdi, sanmenxia, WanGuZhai, like a huge cardiac pacemaker, for river body surge up the spring breeze of the life. In man-made flood peak the barrage of gracious invitation to hundreds of millions of tons of inert sediment has set out on a journey, straight to the bohai sea. Different rainfall regime, water regime produced different scheduling model, but the river together to create the miracle of life. In 2002, the xiaolangdi reservoir first try one's ability, will be 66.4 million tons of sediment erosion and into the sea. In 2003, sanmenxia, xiaolangdi, so county, land muddy imperial combined use, based on spatial scale, based on "clear water back sand" and flood resources, fill in the xiaolangdi reservoir and downstream channel of the Yellow River in 120.7 million tons of sediment to be delivered into the sea. In 2004, the xiaolangdi, sanmenxia, WanGuZhai three library relay diversion, artificial interference sand, artificial shape density current, longest, largest space scale, with bright spot. The experiment of every stage is full of suspense, one of the most exciting is the world artificial density current first appearance. Density current is a rare current form, when high silt-laden flood into the reservoir area later, due to the density difference and dive into the water under, if subsequent power enough, density current will form undercurrent to the front of the dam stealth. In the 20th century and the beginning of the 21st century, people have found many times the natural density flow process. Chinese scientists has always paid close attention to this strange phenomenon, the nature of the enlightenment better time, whether can human mode shape density current, so as to reduce much sediment reservoir fill? Call again and again beginning out, July 8, when 14 30 points, density current finally appeared xiaolangdi dam before, through the located on the bottom of the two PaiShaDong, rolling turbidity current multicolored extrusive dam outside, xiaolangdi reservoir worsening fill form, get preliminary adjustment. The future make full use of artificial peak of surplus, the sediment-carrying capacity of the Yellow River artificial interference sand dredging in the downstream two bayonet reach implementation, imitation in flying sand, add fuel to the fire, the ancient river flowing on a new Yellow River. Others said, this is where the water-sediment regulation, this is for the Yellow River artificial unforeseen. Continuous three years of water-sediment regulation test for channel and sediment reservoir sedimentation reduction, opens up a new way. The Yellow River downstream flow capacity of 1800 cubic meters per second by up to 3000 cubic meters per second, he proved artificial control runoff sediment relationship is effective and feasible, and this is a unique river carnival, this is many sediment river unprecedented life Easter. From the flood control and flood utilization to flood shaping, and rivers, are experiencing a dramatic regression and ascension. From then on, the water-sediment regulation will be the key to the new century the Yellow River restoration technology makes the routine use, the Yellow River life from now on many a starter and relief valve, this is the Gospel of river, but also the Gospel of reservoir, in the world after the question in the wave of, the water-sediment regulation to the river life carried on creative compensation, also gives the dam library with new connotation.

Civilization transformation

This is the fifth day of creation, god said: water to have growth of living things, and let birds fly above the earth across the expanse of the sky. In the early earth civilization, human beings by river and r, innocence of childhood friends, the river is the human kind nurse, also is the romantic serenade, when the storm again and again come life Eden, flood time came, in the human collective memory, rivers or is the power and prestige eight gods, or is unpardonable evil. The enlightenment movement brought the human bid farewell to the past, in the help of science and technology, knowledge of power unprecedented strong rise, human believes that she is everything. In the 20th century, almost all species, have all become human ravening object, the river is more miserable, both predator prey, and prey as follow one's inclinations tools, in addition to irrigation, power generation, sewage, and provide fresh water, the river seemed to have no aesthetic value, no longer flow epic and music, is no longer troubadour praiseful lyric ontology, more philosophical and religious does not have the ultimate value, the use of human to the river, have already broke through the limits of rivers. In the name of humanity in the, to the river into the historic launched, the Yellow River there is no escape from fate, stop, pollution, soil erosion, river congestion, very long a period, the Yellow River even to the sea sediment flow can guarantee, channel condition worsen sharply, mother river at stake, and 5000 years civilization of carrier topple, to the national cultural psychology produced a great impact. In 1998, the Yangtze river waters, prompted China's profound reflection, puts forward a new water conservancy thought, from the traditional to the modern water conservancy water changes to water resources sustainable utilization support, economic and social sustainable development, realize the harmony between human and nature, in order to alleviate the serious situation rivers flow. In the 21st century, the Chinese government, in the Yellow River and the northwest inland water the successful implementation of sanhe town. Integrated water regulation of the Yellow River, the Yellow River water in serious hemiplegia, five consecutive years of full-year don't stop, preliminary turn the since the 1990 s in the downstream flow trend, on the verge of collapse of the river ecological system get preliminary repair. Originated in the qilian mountain in heihe, four consecutive years implementation of unified scheduling, all closed, the release concentration, after years of heihe water return to dry JuYanHai, increasingly spreading sandstorm effectively curb. Xinjiang tarim river many times from Boston to downstream emergency water, hundreds of kilometers channel and the vegetation reproduce vitality, one after another green carols echoed in the east, the earth, and the agricultural revolution and the industrial revolution speed of the crazy after, history suddenly got a body to a large number of yourself, a change in the direction of civilization transformation so to open the prelude.

The life about

Maintain the Yellow River healthy life, this is the humanity to a river's promise, but also with the name of river life, facing mankind river ethical declaration. Genesis on the sixth day, god says to man, I want you fruitful, management the fowl of the air, and land insects, over the fish of the sea, all the earth. In the fifth year of the 21st century, the human and god said: we want to put the right of life back to give us life river and the earth. The first time human the rivers of the right to life, writing in the new century civilization charter, and man and river's contract, let us begin anew, and rivers, will jointly usher in a new era.