【作者】 姜洪亮；

【导师】 王鹰；

【作者基本信息】 西南交通大学 ， 地质工程， 2010， 硕士

【摘要】 瓦斯是隧道建设重大危害之一。瓦斯灾害的发生是多种因素共同作用的结果,同时各因素对影响瓦斯灾害发生的重要性各不相同。随着我国基础建设的发展,穿越煤系地层的隧道越来越多,隧道施工瓦斯灾害事故也在不断的增加。这就迫切需要一种有效的隧道瓦斯灾害危险性评价方法,以防范和减轻瓦斯灾害造成的损失。本文以都汶高速紫坪铺隧道为例,在研究我国大量瓦斯隧道的基础上,及对紫坪铺隧道地质情况的调查、相关资料的分析,对隧道瓦斯灾害问题做了较全面的研究。本文的研究内容和结论包括一下几方面：(1)本文系统的分析了瓦斯的生成、赋存条件、运移规律及瓦斯灾害发生的机理,研究了瓦斯灾害的发生的影响因素。(2)详细阐述地质因素对瓦斯赋存的影响,通过分析紫坪铺隧道的地质资料,研究地质条件对瓦斯影响,得出紫坪铺隧道存在高瓦斯区的原因。(3)以模糊数学理论为基础,在掌握丰富的资料的基础上,提取影响瓦斯危险性的评估因素,建立对隧道瓦斯危险性进行评估的模糊综合评判模型。通过对模糊综合评判的结果与实际监测结果进行比较分析,模糊综合评判法对瓦斯隧道的危险性评估是合理、有效的。为今后的瓦斯隧道危险性评估提供了理论依据。(4)通过对紫坪铺隧道瓦斯灾害防治措施的研究,建立一套适用于瓦斯隧道的灾害防治体系。更多还原

【Abstract】 Gas disaster is one of the major disasters during the tunnel construction., Gas disasters are the result of many factors, while the importance is different of the factors affecting the gas disaster. Along with infrastructure development, more and more tunnel of traversing the coal seam will be constructed, and the gas disasters and accidents are also constantly rising. There is an urgent need for an effective tunnel gas disaster risk assessment methods to prevent and reduce gas losses caused by disasters.This thesis takes the Du-Wen express way Zipingpu tunnel as an example. Based on the investigation of the Zipingpu tunnel geology, analysised the related data and massive paper of gas tunnel, we do a comprehensive study on the gas disaster of the tunnel. Study contents and conclusions acquired in this paper are mainly included as follows:(1) This thesis analysis the gas generation, occurrence conditions, migration law and the gas disaster, and study the factor of the gas disaster.(2) This paper explicates the geological factors on the occurrence of gas. Through analysis the geological data of the Zipingpu tunnel and study the impact of geological conditions on the gas, conclude the reasons tunnel of the high gas on the Zipingpu tunnel.(3) Based on the theory of the fuzzy mathematics, and a wealth of information of gas,we get the risk factors of the gas hazard, while we establish the model of the tunnel gas risk assessment. Fuzzy comprehensive evaluation on the results of the monitoring results were Compared the results of the actual monitoring results, we can conclude the fuzzy comprehensive evaluation method on the gas risk assessment of tunnel is reasonable and effective. Provide a theoretical basis for the gas risk assessment.(4) Through the study of gas disaster prevention measures, we establish a prevention system for the gas disaster of the tunnel.更多还原