截流方法(国外英文资料).doc

截流方式(国外英文资料) River closure project: refers to the diversion drainage buildings close to completion, namely in the invasion way or a shore buildings on both sides of the peak embankment form longkou, longkou and protection, to guide drainage buildings after completion, the favorable opportunity, in the shortest time to longkou plug, truncated rivers. The basic method of river closure with stroke closure piece of river closure, blasting the closure, the gate, and other grasses crib, steel sheet pile, soil and abatis weir, hydraulic filling method of river closure, etc. The method of selecting the intercepting method should fully analyze the hydraulic parameters, the construction conditions and the difficulty, the quantity and the properties of the projects, and the technical economic comparison. (1) block: the flat plug is a bridge or trestle at longkou, which is carried by self-discharging cars or other means of transport, and throws at the front of the dragon mouth. As the flow rate increases, it gradually throws up large blocks of material, so that the mound will rise steadily under the water until it rises above the water and cut off the riverbed. Kung, dike - is the water resources and hydropower engineering construction of river closure, the way into the water and toss precast concrete blocks, local materials filling material formation permeable YanTi across rivers. Due to peak embankment has the characteristics of high mechanical strength, based on convenience, very beneficial to in a short period of time through river on both sides, forming favorable construction channel, so water resources and hydropower engineering cofferdam construction is usually carried out on the basis of the peak dike. When kung, dike closure, due to the longkou large flow, high flow rate per unit width, space narrow, therefore kung, dike ends when the final closure is easy damaged by erosion, before the final closure for kung, dike end bumper reinforcement. After the heidong levees me