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中文摘要：
燃气泄漏及其危害性的研究是有效降低和控制燃气事故的前提和基础。本文根据用户室内燃气的实际情况，讨论了室内燃气泄漏率的计算模型。首先以热环境和风压区的不同分析了房间自然通风计算模型，而后在此基础上，建立了不同泄漏率和自然通风条件下的室内燃气泄漏浓度变化规律通用计算模型，最后以重庆市气象条件为基础，模拟分析了不同季节、月份和房间所处不同风压区条件下的燃气泄漏浓度随时间的变化规律。本文的研究成果可为控制和降低室内燃气泄漏爆炸及中毒事故的发生提供有效的技术参考，以保证居民安全用气。
英文摘要：
The research on the gas leakage and its hazards is the precondition and foundation for reducing and controlling gas accidents effectively. In this paper,the calculation model of indoor gas leakage rate according to the actual conditions of user＇s indoor gas was discussed. Firstly, according to the different thermal environments and wind pressure areas, the calculation model of indoor ventilation was analyzed. And then,a universal calculation model for the concentration variation trend of indoor gas leakage at different leakage rates and under different natural ventilation conditions was established. At last, considering the meteorological condition of Chongqing,the variation trend of gas leakage concentration with time in different seasons and months,as well as different wind pressure areas, was analyzed. The conclusions of this paper could provide effective technical reference for controlling and reducing indoor gas leakage explosion and intoxication accidents ,thus guaranteeing the dwellers to use gas safely.
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