【正文】 Easter Pearl Tower, the Shanghai Port, and the buildings in the bund areas signify the contribution that this project will make for the region along the mid and the down stream of the , some other figures are also show in the picture like the fairies playing music, dance of the Ba People, the thousandhands Kwanyin, and with the figures in the front, the central embossment in the back is the legendary that the magic bull helped Da Yu excavate the both of the tow sides, there are the paintings of the gorges and the the gorges, there is an ancient picture showing the poor boatman, the boat trackers, and the people plunged into an abyss of misery, which tell you the worst living condition of the people in the ThreeGorges region in ancient two sides, there are the sun, the moon, the Polaris, and the Big Dipper, posing a small celestial flowing water splashing on the grass links together the figure of the whole embossment to show the strong culture connotation of the union of the space, the earth, and the Platform on Tanzi Ling壇子嶺觀景臺Here we are the sightseeing platform at the top of the Tanzi Ling, and here is the best place to view the entire construction , we ca see the main dam, where was former main navigation next to the south bank is the 3 phase site of the Three Gorges Project, where will set the right bank generation look at the further city at the mountainside of the opposite bank, it’s the new city of Zigui reserved water has submerged the old national government chose the mountainside as the new city site, and kept 30 thousand immigrants from places below the 175meter water look to the downstream, you will find the entire construction of the permanent ship here is the place “when standing at the top summit, we will see how small the surroundings are”.185 Sightseeing StandThe so called 185 sightseeing stand is the start place of the main dam, which got the name from its height of 185 we are here, and I will give you a brief introduction to this main , please allow me to ask you a question: how many dams have been finished in the world? Maybe we all know there are too many, but no exact the material aspect, all these dams can be sorted in two types: one is earth rockfill dam made from earth, grit and rocks。and the other is plaster dam made of rocks or the Three Gorges Dam is the latter , we said this dam is concrete gravity dam, and now it belongs to plaster dam, why? Here plaster refers to bricklaying, now the concrete has replaced bricks, with better reliability and the section of this gravity dam is large enough for safety, it will also split off after a certain time for its high cause is the adhesive of concrete dam, the the solidifying process, the cement will release heat, especially in summer, this heat will cause high temperature。but the solidified dam will shrink and cool, if limited, the shrink will cause large cracks are very dangerous for the concrete dam, so there must some cool measures for the concrete traditional measure was firstly from is to add cool aggregate and ice while mixing the concrete and place water pipes inside the dam for water a result, the builders call this “Feed Ice and Water for Concrete Dam”.Sightseeing Stand at the Dam TopLadies and gentlemen, please look down the dam, the extra water or flood will discharged by this discharge dam at the middle of the main discharge dam is 483 in length, consisting of 23 deep outlets, 22 overflows and 22 bottom bottom outlets have been submerged since the first water reserve in June of , the speed of the water column from the deep outlet can reach 110 km/h, even 120 km/h when eater level equals to 175 at this high speed water, maybe everyone would worry about the down stream’s safety if the dam was destroyed in Three Gorges Project is located at the center of China main land, with dam height of 185 m, and total reservoir capacity of billion can effectively control the flood and contribute to the economy and social war took place in China, the Project would be one of main during the construction period, engineers were well considering its early as October of 1958, former Premier Zhou Enlai established rules for dam security in details: With location in the central china and giant body, the concrete gravity dam is strong enough for conventional arms except nuclear , there are certain measures in case of nuclear , approved by hundreds of model test, the downstream gorges and watercourse are long and bend enough to decrease the flow speed and later, the water will flow into bill areas where speed and power are decreased the water will be controlled in case of emergency, most water in reservoir can be empted to prevent main dam from Memorial ParkThe damming memory park is located in the right bank of the main dam, covering an area of 90,000 will take you back to the great historical damming moment by site remains show, scene play, video illustration, and historical records , Chairman Mao Zedong described the plan “To rebuild the steles, to remove the clouds among Wu Mountains, and make a lake among high gorges mountains”.And now, all these have e the steps of Da Yu, thousands of builders have dammed the Yangtze 3 times within 37 km in Xiling gorge, and successfully built 2 main now, all of us can even image the plex technology and hard we are setting foot in this memorial park, sharing both top records in the world and the theme of spirit for builders to work all out in heave memorial park consists of material section, technology exhibit section, acting section, and tour amp。 entertainment material section is the former material site for construction in the right giant tetrahedron spreading in the grass are the remains of damming rocks, which vividly show us the great of damming in the Yangtze the giant construction machines, used to be “heavy weapons” for successful the technology exhibit hall, we will back to the damming historic moment by the modem image repro