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Research on Layout Optimization of Subway Fire Monitoring Network

Author: ChenHua
Tutor: MouRuiFang
School: Southwest Jiaotong University
Course: Safety Technology and Engineering
Keywords: subway fire monitoring layout optimization VFP sofware
CLC: U231.96
Type: Master's thesis
Year: 2010
Downloads: 136
Quote: 2
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Abstract


Subway, the product of the booming economy, poised to serve the daily increasing material and spiritual demands of metropolis citizens, is the modernization cachet of a nation. With tri-dimensionizing process in city traffic, subway poses great influence on citizen’s everyday life. The expedience subway can hardly be outshined by any other vehicles. However, subway is characterized by high traffic flows, dense aggregation of passengers, and fast speed, which redounds to safe cankers. Fire is one of the cankers.The most efficacious avenue to reduce the occurrences of fire and thus cut down the life and material losses is to prevent fire. This thesis delves into the optimization of the distribution of fire detectors. That is, achieving the superlative surveillance performance using the minimum number of fire detectors, under the prerequisite that the safe level is not sacrificed.The thread followed by this thesis is as follows. First, the characteristics of subway fire and principles of fire detectors are analyzed. Taking into account the idiosyncrasy, traffic pattern, and ventilating structure of subway, the choose of fire detectors and the partition of alarm and detecting areas are discussed in detail. Then, considering the traits of subway, we analyzed the spreading rules of subway fire and requirements for ventilation. The detecting areas of individual detectors are optimized by capitalizing recursive coefficient method. Finally, based on the automatic fire alarm system design specification and the method of square, the optimal deployment of fire detectors is resolved.The calculating process is simplified by using VFP programming.The experimental verifications reveal the approach proposed in this thesis can somewhat reduce the number of fire detectors and thus posses practical values.

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CLC: > Transportation > Rail transport > Special railway > Mass Transit Railway > Subway fire
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