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道力歹枢纽作为通辽市教来河上的第一道水利屏障,承载着通辽市奈曼旗、科尔沁区的防洪安全。新建的教来河大桥作为道力歹枢纽泄水的一个重要组成部分,它的位置、轴线走向、桥下净空等对防洪有着至关重要的意义。通过建立数学模型,将道力歹枢纽分割成若干单元,采用数学方法模拟教来河大桥修建前后的坝前和桥前洪水的最大水深、最大流速和最高水位分布情况,模型结果显示教来河大桥建成后坝前最高水位降低8 cm,桥前最高水位降低10 cm,桥前和坝前的最大流速也出现不同程度的衰减。通过数值建立数值模型模拟道力歹枢纽处的水流状态,为能否在道力歹枢纽分洪口处修建教来河大桥提供了较为可靠的理论依据。
As the first water conservancy barrier in Tongliao City to teach the river, Daozhaoyu hub carries the flood control safety of Naiman Banner and Horqin District in Tongliao City. As a key part of drainage of Daozhai river, the newly built Bridge to Jiao Lai River is of vital importance to flood control because of its position, axis direction and clearance under the bridge. Through the establishment of mathematical model, the DHS is divided into several units. Mathematical methods are used to simulate the maximum water depth, the maximum velocity and the maximum water level before and after the construction of the Jianlai River Bridge. The model results show that the Qilai River After the completion of the bridge, the maximum water level before the dam is reduced by 8 cm and the maximum water level before the bridge is reduced by 10 cm. The maximum flow velocity before the bridge and the dam also shows varying degrees of attenuation. The establishment of a numerical model to simulate the water flow status of the Daozhai river hub provides a more reliable theoretical basis for whether or not the Daozha River Bridge can be constructed at the flood diversion port of Daohai River.