2012年二级建造师《水利水电》辅导资料：(二)(国外英文资料).docVIP

2012年二级建造师《水利水电》辅导资料：(二)(国外英文资料) 2012 two construction division water conservancy and Hydropower guidance materials: (two) The first chapter construction diversion 1., key and difficult content Understand the construction diversion in water conservancy and hydropower project construction in the special position and role, grasp the basic mode of construction diversion, understand the main factors influencing the way of diversion, diversion time division understanding, understand diversion design standard and design of diversion flow, understanding flow project layout and hydraulic calculation, understand the comparison and selection of diversion scheme. Understand the method of determining the layout of cofferdam and the elevation of weir crest, master the basic application type of cofferdam, and form a lot of cofferdam, and master the applicable condition, structure and layout of earth rock cofferdam and concrete cofferdam. The closure is closely related to the cofferdam, but because the closure occupies an important position in the construction diversion, and it is also one of the main control projects of the overall construction schedule, the main problems of the method and design of vertical closure should be mastered. After the closure cofferdam breath, to begin to foundation pit drainage, drainage, can create dry construction conditions, should grasp the main layout and calculation of the initial drainage and frequent drainage, and drainage for the Ming dynasty. 2. construction diversion concept Generally speaking is to take guide, cut, blocking, storage and discharge and other construction measures, the river flows in all or part of the safety oriented downstream, or storing up, to ensure that the hub of the main building in dry land construction. This is the construction of water flow control, commonly known as construction diversion. Construction diversion runs through the whole process of construction. It not only affects the general construction organizati