Experiment Flow Characteristics Of The Effect Of Dam Built On The City River

The development of China’s urban river management should be directed to the laws of nature, of the comprehensive management of rivers and the river ecological construction, environmental and ecological construction, restore vitality and environmental self-purification ability, attention to the multiple functions of urban rivers, to follow the river to naturalization,ecological, human and cultural landscape of.To achieve this goal, we need to draw the flood experience of developed countries, ecological engineering and technical management of rivers, changes in the urban river management philosophy, innovation management, scientific and reasonable guidance to the comprehensive management of our urban rivers and ecological construction. The rubber dam is more in the urban river training of a retaining structure. Many medium and small river systems environment and the ecological environment is deteriorating very prominent reality, has become the indisputable water environmental issues before us,dam designers,builders and managers should follow the ultimate goal to improve the ecological environment and sustainable development carry out environmental impact assessment through the application of modern technologies, in-depth development of the dam is conducive to ecological environment and mode of operation means, so that every new project benefits are optimal.In many indoor water based on the experiment group, the main work are:1. The same under all without dam slope and the whole dam group, and the mouth of dam water flow characteristics of comparative analysis.2. The same with the full flow without dam and the whole dam group, and the mouth of dam water flow characteristics of comparative analysis.3. The same under the slope with openings and proper dam along the riser running of the dam group section water flow characteristics of the comparative analysis.4. The same flow and proper dam with the aperture of the dam along the riser running dam section water flow characteristics of the comparative analysis.5. Riverbank and rubber dam of influencing each other between the experimental research. The author analyzes concluded that the flow depth along the river dam from the irregular distribution into a uniform distribution of ladder,flow relative to the more obvious gradient of increasing water depth shallow stepped distribution. The slope is the same,with the increased depth of the flow increases.Open the flow velocity of the dam due to the influence of the opening of the dam changing trends and the group velocity variation of dam dam differences, but is still the same flow, with the velocity gradient increases with the slope, the greater the flow velocity. The dam and riverbank existing at the same time to the hydraulic characteristics of the dam and influence than open riverbank existing at the same time obviously, in the same water mouth dam and the riverbank existing at the same time to the whole dam and analyzed the existing at the same time analyzed the riverbank.