Based on the geological and hydrological characteristics of Pian Valley, this paper makes a preliminary design of its water control project. The main contents include the design of the basin water control project, the key points of basic data, the layout scheme of main buildings, the foundation treatment and the closure of the construction guide, etc. What's in it
Considering various factors, b-b is selected as the dam axis of the project. After comparing the advantages and disadvantages of various dam types and combining with the site characteristics of the project, the concrete solid gravity dam is selected as the dam type of the project. Wid method is adopted for flood control calculation. Esp read the semi-graphic manual table, and after comparing the three flood schemes, it was found that the design flood was 306.3m, the check flood was 307. 1 m, and the highest section of a dam was 310.9m.. This key main building consists of water blocking building, water leakage building, power generation building and emptying building. After machine reading (gravity dam stability and resistance calculation program) and the core of resistance stability ratio, there is an economic section of the non-overflow dam section, with the crest 12.5 m and the height 125.9 m; WES curve is practical for water leakage, and the elimination of the curve adopts the way of water flow, and the top of observation well overflow of the building adopts the way of energy flow; The dam section of the powerhouse includes three unit sections and a transmission field section, and the powerhouse adopts the back dam type; The deep hole is used as the venting building, and the hole shape is selected by the internal sliding mode of the unconfined dam. Finally, two diversion plates are selected for construction diversion. All the water conservancy projects in Quanhe Basin designed by this method are discharged from narrow riverbed, and the second stage is discharged from bottom hole.
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