穿煤层隧道施工关键技术研究

发布时间：2018-01-23 07:05

本文关键词： 煤层隧道瓦斯数值模拟监控　出处：《安徽理工大学》2014年硕士论文　论文类型：学位论文

【摘要】：随着西部的开发和现在中国经济发展的需要的需要；现在西部地区正进行着大规模的基础设施的建设。由于西部地区的地质条件复杂多是含煤层和溶洞等不良的地质因素。本文主要是针对遵义城市公路建设中遇到穿煤层的隧道情况进行了相关的分析和研究。本文主要从以下几个部分对煤系地层的隧道进行了分析。通过国内外对煤层隧道的研究现状分析,了解和掌握了有关煤系地层隧道设计和施工。同时经过对隧道围岩和支护理论的研究,对隧道的受力和变形特征有了更进一步的掌握。是对现场的揭煤施工的难点进行了一定的阐述。在穿煤系地层的隧道建设中揭煤施工是一个技术难点。本文揭煤施工的具体方案参考了煤矿建设的相关规定和内容。同时,瓦斯气体的防治是施工的关。本文简单介绍了瓦斯防治的具体方法比如瓦斯抽排释放。利用FLAC结合施工现场的实际情况,建立了隧道开挖的模型；通过开挖的对煤系地层的隧道围岩的受力和变形进行分析,通过分析得到围岩的受力、位移及隧洞周围的塑性区分布的情况。最后本文分析了现场的瓦斯监控和施工监控的情况,通过监控数据和数值模拟的比较可以知道模拟值对指导我们的具体施工和设计有着相关重要的意
[Abstract]:With the development of western China and the needs of China's economic development; Now the western region is carrying on the large-scale infrastructure construction. The complex geological conditions in the western region are mostly the bad geological factors, such as coal seam and karst cave. This paper is mainly aimed at the urban highway construction in Zunyi. The tunnel situation in coal seam is analyzed and studied in this paper, and the tunnel of coal measure stratum is analyzed in the following parts. Through the analysis of the present research situation of coal seam tunnel at home and abroad, the author has understood and mastered the design and construction of coal measure stratum tunnel, and studied the tunnel surrounding rock and supporting theory at the same time. The stress and deformation characteristics of the tunnel have been further grasped. It is a technical difficulty in the tunnel construction of coal measure strata. The concrete scheme of coal stripping construction in this paper refers to the relevant rules and regulations of coal mine construction. Content. At the same time. The prevention and cure of gas is the key of construction. This paper briefly introduces the specific methods of gas prevention and control, such as gas drainage and release. The model of tunnel excavation is established by using FLAC combined with the actual situation of the construction site. The stress and deformation of surrounding rock in coal measure strata are analyzed by excavation, and the stress and displacement of surrounding rock and the distribution of plastic zone around tunnel are obtained. Finally, the paper analyzes the situation of gas monitoring and construction monitoring on the spot. Through the comparison of monitoring data and numerical simulation, we can know that the simulation value has important meaning to guide our concrete construction and design.
【学位授予单位】：安徽理工大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：U455.4

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