【正文】 al sustainable development, success will largely depend on the sustainable utilization of water resources. Water conservancy of sustainable development is a plicated system engineering, involves many aspects of resources such as water, development, utilization, management, configuration, saving, protection, engineering use and management, water conservancy investment and construction and talent development and use, water and soil conservation, flood control and waterlogged elimination, system and mechanism, science and technology and regulations, etc. Among them, the soil and water conservation is the sustainable development of water an important ponent. 2. The present situation of Chinese soil erosion China has 356 million km2 of soil erosion, among which the soil and water loss by hydraulic erosion by 165 million km2, of the wind erosion of soil erosion 191 million km2, in the water and wind erosion area 26 million km2 in the soil erosion area water erosion, wind erosion crisscross area for. Survey shows that the nationwide soil erosion side wide, large volume, whether in a mountainous, hilly or sandstorm area, or rural, urban, coastal areas have different degrees of soil erosion problems. For example, in three gorges reservoir area of approximately 5 million total km2, involving chongqing, hubei two provinces 19 area (county, city), including chongqing for 16 area (county or city), the total area is million km2. Part of chongqing soil erosion area covers million km2 in soil erosion modulus, for 3751t/million km2 for 11481 million in erosion and t. 3. The harm of soil and water loss of water conservancy dry season, easy occurrence patterns flow reductionSoil erosion is the primary consequences to reduce dry season, the serious water is parched, with discontinuous flow, specific shown in two aspects: first, the soil 21,200,000 decrease. The gap between soil particles of soil total volume in 30 ~ 50%, gap existing space, is water is the key to keeping waterhead, with water and the soil, water storage space is lost, then the soil, thus reduce also 21,200,000 from hydrological point, enhance the years a runoff change, make the flood season water more, we watersaving less. Second, soil erosion makes terraced fields, ponds, water , reservoirs, lakes, rivers, storage capacity in deposition decreased, drop accordingly 21,200,000, also make flood water more, dry water less. Therefore, soil erosion caused easily patterns. increased surface runoff, exacerbate flooding Water and soil loss make water dry season in flood season, but reduce the opposite. Serious soil erosion areas, vegetation, and most damaged mountain soil erosion is more likely to occur. When heavy rains occurs, due to ground slope is big, the vegetation is insufficient, slope intercepting ability is bad, contain the surface soil water, make rainfall intensity lower ability than soil water infiltration rate, rain infiltration, quickly to a runoff, instantaneous shapeForm the flood process and heavy rains and floods process similar, shot up steep falls, lasted for short, intense flooding torrents of inclusion, sediment downstream of the lives and property of the people suffered heavy losses. cause river, reduce water conservancy project library siltation of benefits Because the surface soil bareness, the erosion of hydraulic, TangKu with surface runoff sediment flow of rivers, and, on the other hand, the sediment deposition in the reduced capacity of flood, weakened ability, reduce the service life of the reservoir, it is apt to cause serious breakdown of ManBa, such disasters caused rivers, on the other hand, pick up high river channels, which seriously affected flood passage ability water level rises, 1994, vent appear so often in a flow of 10 years of water level in 20 years a phenomenon. easy to set off landslides and debris flow disaster Due to damage to vegetation, runoff change, soil and geological structure affected, in a rainstorm, landslides and mudslides formed extremely easily, cause flash flood disasters. Landslides and debris flows disasters in addition to houses, roads, isin electric power munication facilities outside, will also destroy the farmland, ponds, water conservancy facilities , reservoir, etc, serious still can affect shipping, make discontinuous flow. water environment quality decline The floods, occurred frequency increases with increased, surface soil sediment forms into water, water and sediment increased increased turbidity of. Meanwhile, loss of soil organic matter and contain large amount of residual pesticides, fertilizers, and other substances, these substances with soil together, make water into water nonpoint pollution increase. The more serious soil and water loss, enter the water pollutants, the more serious water pollution。夯點間矩：，夯點間矩試夯時采用方案：2000KNM夯擊能，夯點間距5m5m，點位布置強夯區(qū)應比基礎外邊緣加大3m以上。10基礎處理本工程對東二干老飯店樞紐節(jié)制閘處進行了勘察。 圖9—2 閘室圖 （單位：m） 構件名稱重 力（kN）力 臂（m）力矩（ kN m）底 板邊 墩中 墩工作橋交通橋工作橋排架閘 門啟閉機27合 計表9—3 閘室結構自重計算表（以底板上游端最高點為矩心）靜水壓力分為水平水壓力和垂直水壓力（水重）。水閘在運行期間，受水平推力的作用，有可能沿地基面或深層滑動。表5—4 閘門啟閉所需的啟門力和閉門力計算表計算情況(m)(m)b(m)(kN)(kN)(kN)(kN)中孔閘門由計算結果可以看出0所以閘門在關閉時需要增加配重塊。由閘墩高程計算表可初步擬定：，高程為▽。表772 修正值計算表 參數(shù)位置　SˊTˊTβ進口17出口17 進出口段齒墻不規(guī)則部位修正參照文獻[2]，水頭損失值見表733 表510 滲流計算表（校核工況）流段序號阻力系數(shù)ξ水頭損失hi(m)Δh1(m)進出口修正(m)Δh2(m)齒墻修正(m)滲透坡降J1 2 3 4 5 6 7 8 9 10 11 12 13 出口段、水平段滲透坡降演算