EPANET在城镇区域消防供水能力评估中的应用

APPLICATION OF EPANET IN EVALUATION OF FIRE WATER SUPPLY CAPACITY IN URBAN AREA

EPANET具有较强的水力计算功能,在城镇供水优化设计及部分消防领域已经得到了应用。针对目前城镇区域亟待解决的消防供水能力评估问题,对现有估算方法和利用压降的测试方法进行探讨,运用EPANET建立某城镇区域的水力模型,挑选典型控制点对枝状、L形、丁字形和十字形四种管网形式进行模拟。结果表明,四种工况的供水能力和可靠性随着管网形式复杂化逐渐增强,但控制点供水能力增强的同时也需要考虑对周围区域的影响。试验结果表明,EPANET在城镇区域甚至城市消防供水能力评估方面具有一定的参考价值。

EPANET,which has a strong hydraulic calculation capability,has been applied in the optimization design of urban water supply and fire water supply system. Aiming at solving the urgent problem of the assessment on fire water supply capacity in the urban areas,the paper discussed the existing estimation methods and test method using the technique of depressurization. By establishing a town area hydraulic model using EPANET,it was conducted a simulation of four kinds of pipe networks,i. e. branch-like,L,T and cross-shaped ones with typical control points.The results showed that the more complicated the form of pipe network,the stronger the supply capacity and reliability in the four conditions. At the same time,the impact on the surrounding area also should be considered. The results had a certain reference value for EPANET assessment on the fire water supply capacity in urban area.