Lakhasly

MIKE 11 calculation software is applied to build Karot Hydropower Station dam break hydrodynamic mathematical simulation model.Dam break mathematical model is composed of river network module, section module, parameter module, structure module and boundary module.Water flow process simulated by Karot Dam Break Model is as follows: before dam break, flow is discharged by flood releasing structures, reservoir level rises; after dam break, river channel permits flow, and its model is generalized as Figure 2.2) Section Module Section module contains three parts: river channel section data, Karot Dam level-volume curve, and Mangla reservoir level-volume curve, the latter two parts are mainly used to simulate dam-retained channel storage volume.Channel section: There are 75 measured sectional data within the modelling range provided by the Hydrology Bureau of Changjiang Water Resources Commission.

MIKE 11 calculation software is applied to build Karot Hydropower Station dam break hydrodynamic mathematical simulation model. Dambreak structures are applied to simulate dam break in MIKE 11 [11] The 1D dam break model generalizes the dam breach into dam crest cross-flow hydraulic structure and dam breached hydraulic structure. This study involves gradual whole break led by dam crest overtopping. Water flow process simulated by Karot Dam Break Model is as follows: before dam break, flow is discharged by flood releasing structures, reservoir level rises; after dam break, river channel permits flow, and its model is generalized as Figure 2. Dam break mathematical model is composed of river network module, section module, parameter module, structure module and boundary module. 1) River Network Module River network module includes some information about river channel, such as river mileage, calculation range, flow direction, etc. Calculation range is the reach between Karot damsite to Mangla reservoir tail section. Simulated main tributaries include BXZ2, BXZ6, BXZ9 and Kanshi channels. 2) Section Module Section module contains three parts: river channel section data, Karot Dam level-volume curve, and Mangla reservoir level-volume curve, the latter two parts are mainly used to simulate dam-retained channel storage volume. Channel section: There are 75 measured sectional data within the modelling range provided by the Hydrology Bureau of Changjiang Water Resources Commission. The section locations are shown in Figure 3. The main stream within the modelling range has a length of 72.7 km, containing 49 sections with average section gap of 1.5 km; the tributaries within the modelling range have a length of 37.5 km, totaling 26 sections, with average section gap of 1.7 km.