公路高瓦斯隧道施工风险分析

发布时间：2018-04-29 03:38

本文选题：瓦斯 + 公路隧道　；参考：《安徽理工大学》2017年硕士论文

【摘要】：随着近年来国家对于交通基础设施投资力度的增加,各地规划的公路铁路项目也相继开工或处于准备阶段。隧道是公路工程建设中重要的构筑物,也是关乎民生和地区形象的工程,不可避免地,穿越煤层的瓦斯隧道建设也越来越多。瓦斯隧道事故包括瓦斯窒息、瓦斯爆炸、煤与瓦斯突出。灾害一旦发生,将会给人民生命和财产带来极大的损失,产生恶劣的社会影响,因而控制好隧道工程施工中的瓦斯安全工作对于改善交通安全形势显得尤为重要。本文依托贵州省正安至习水高速公路中的天城坝隧道工程实例,针对高瓦斯隧道项目的施工过程进行风险分析,主要研究了如下的内容:1.分析统计近五年全国各省煤矿瓦斯事故情况,提出隧道风险性研究的重要性和必要性,介绍瓦斯隧道风险分析在国内外的相关研究现状。2.介绍瓦斯的概念、来源和特性,结合近五年全国各省煤矿瓦斯事故及国内外典型瓦斯灾害进行事故分析。3.结合大数据下决策树法与专家分析法进行风险识别,并建立风险评价指标体系。4.结合风险评价指标体系,通过向专家发放调查问卷的形式确定判断矩阵,并借助Yaahp软件建立层次模型求得各个指标因素所占权重。5.利用层次分析法求出的各指标因素的权重占比,结合模糊综合评价法,通过三级评价最终求得天城坝瓦斯隧道施工风险发生的概率,对照相关规范确定天城坝高瓦斯隧道风险等级。6.结合工程实例提出应对风险的措施即进行风险控制,尽量降低风险所带来的损失。瓦斯事故多发于煤矿,因此煤炭矿井行业相关的规范技术也已较为完善。关于铁路瓦斯隧道的相关资料虽然没有煤矿详尽细致,但也有章可循,而公路瓦斯类隧道至今没有明确的规范,大多参考铁路相关文件。本文参考贵州省下发的公路隧道相关技术指南中的有关规定,进行模糊层次综合评价分析,更加符合工程实际情况。
[Abstract]:With the increase of national investment in transportation infrastructure in recent years, the planned highway and railway projects in various places have started or are in the stage of preparation. Tunnel is an important structure in highway engineering construction, it is also related to people's livelihood and regional image. Inevitably, gas tunnel construction through coal seam is more and more. Gas tunnel accidents include gas asphyxiation, gas explosion, coal and gas outburst. Once the disaster occurs, it will bring great loss to people's lives and property and produce bad social impact. Therefore, it is very important to control the gas safety in tunnel construction to improve the traffic safety situation. Based on the example of Tianchengba Tunnel in Zhengan to Xishui Expressway of Guizhou Province, this paper analyzes the risk of the construction process of high gas tunnel project, and mainly studies the following contents: 1. This paper analyzes the coal mine gas accidents in all provinces of China in recent five years, puts forward the importance and necessity of tunnel risk research, and introduces the related research status of gas tunnel risk analysis at home and abroad. This paper introduces the concept, source and characteristic of gas, and analyzes the accident of coal mine gas accident and typical gas disaster at home and abroad in the last five years. Combined with big data's decision tree method and expert analysis method, risk identification is carried out, and risk evaluation index system. 4. 4. Combined with the risk evaluation index system, the judgment matrix is determined by issuing questionnaires to experts, and the weight of each index factor is obtained by using Yaahp software to establish a hierarchical model. By using the weight ratio of the index factors calculated by AHP and the fuzzy comprehensive evaluation method, the probability of the construction risk of Tiancheng dam gas tunnel is finally obtained through the three-level evaluation. The risk grade of Tiancheng dam high gas tunnel is determined according to the relevant specifications. Combined with engineering examples, the measures to deal with risk are put forward, that is, risk control is carried out to reduce the loss caused by risk as far as possible. Gas accidents are more frequent in coal mines, so coal mine industry related normative technology has been relatively perfect. Although the relevant information about railway gas tunnel is not detailed and detailed in coal mine, there are also rules to be followed. However, there is no clear standard for highway gas tunnel so far, most of them refer to the relevant railway documents. Referring to the relevant regulations in the relevant technical guide of highway tunnel issued by Guizhou Province, this paper makes a comprehensive evaluation and analysis of fuzzy hierarchy process, which is more in line with the actual situation of the project.
【学位授予单位】：安徽理工大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：U455

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