第九章 水利关键安排谜底(国外英文资料).docVIP

第九章 水利枢纽布置答案(国外英文资料) Chapter ix the solution of the water conservancy project A, fills up the topic The main task in the feasibility report stage is to demonstrate the feasibility, economic rationality, and the necessity of constructing the project. 2. The selection of water conservancy hub layout from design, construction, management, technical, economic comprehensive comparison selected the optimal solution. The bend of the road should be arranged in the lower part of the concave bank. Second, the short answer What is the stage of the design of the water control center? Explain the design tasks of each phase. The feasibility of the engineering technique, the economic rationality and the necessity of construction (2) the preliminary design stage: select the optimal scheme, dam, dam type selection devices, such as resettlement planning is put forward, select construction diversion scheme, detailed construction scheme and technical measures to clarify engineering benefit, put forward a general estimate. (3) technical design and construction drawing design phase: to detail design, the research foundation treatment scheme, detailed construction scheme and construction technical measures, construction schedule and construction budget, etc. How does water control affect the environment? (1) the impact on the upstream of the submerged: indicates high water level reservoir formation, and swim upwards, flood damage, water after the rise of ground water level, may cause the ground temperature drops, the surface swamping and salinization, we are born and harmful microorganisms. Due to the high water level, the bank was submerged and the slope was unstable and the landslide threatened the reservoir and the downstream safety. (2) the impact on the downstream: sedimentation after makes a long river downstream riverbed serious incised, the water drops, channel, condition change caused by scouring and silting in riverbed, direct influence on both sides of the embankments, shippin