下不同火灾规模时隧道内的温度场，以修改后的克拉尼公式为公路隧道火灾时的安全逃生判别条件，给出了不同隧道风速、不同火灾规模时的消防救援的安全位置。
Using modified Cranee formula as the criterion of escape on highway tunnel fire, the safe locations for fire rescue under different wind speeds and scales of fi.
通过引入可维生环境的设计概念，当隧道内发生火灾时，利用纵向通风模式达到满足隧道内人员疏散逃生要求的目的。
Through the application of tenable environment concept, the aim is to let passenger successfully evacuate under the longitudinal ventilation when fire occurs.
既有隧道的扩挖或改建需求，大致可分为基于交通量增加、新增通风或逃生空间、老旧隧道维修补强等。
The enlarging or reconstruction requirement of existing tunnel, which can be divided into increases based on traffic flow, new ventilation or escape space, old tunnel reinforcement and so on.
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