山区瓦斯隧道相关问题及评价研究

Study on Related Problems and Evaluation of Gas Tunnel in Mountainous Area

为了科学合理地评价瓦斯隧道,为设计和施工提供可靠的瓦斯参数,在搜集相关资料和综合勘察的基础上,结合贵州省麻江地区某瓦斯隧道的勘察,介绍了瓦斯隧道的勘察工序,并对瓦斯参数进行理论计算,并与勘探取样、测试结果进行对比分析,根据行业规范的评价标准,结合矿产地质相关指标信息进行综合分析评价,提出瓦斯风险段落及等级,以期对类似隧道工程建设有所借鉴和指导。

The purpose of this paper is to evaluate gas tunnels scientifically and reasonably so as to provide accurate gas parameters for the tunnel design and construction work. On the basis of collecting relevant information and geological investigation results, comprehensive analysis and evaluation have been carried out and a theoretical calculation of gas parameters has been made according to the evaluation criteria based on industry codes and the related indicators of mineral geology. Combining with the geological investigation work of a gas tunnel in Majiang area of Guizhou, the investigation procedure of a gas tunnel has been expounded and a comparison has been made between the results of exploration sampling tests and the theoretical calculation above. It is found that theoretical calculation results based on the collected data and comprehensive analysis are reliable. It is hoped that the study can be used for reference and guidance for similar tunnel construction.