[1]强新刚,袁东,何平,等.隧道突出气体特征及形成机理研究[J].高速铁路技术,2024,(02):39-44.[doi:10.12098/j.issn.1674-8247.2024.02.007]
　QIANG Xingang,YUAN Dong,HE Ping,et al.Study on Characteristics and Formation Mechanisms of Tunnel Gas Outbursts[J].HIGH SPEED RAILWAY TECHNOLOGY,2024,(02):39-44.[doi:10.12098/j.issn.1674-8247.2024.02.007]
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隧道突出气体特征及形成机理研究()
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《高速铁路技术》[ISSN:1674-8247/CN:51-1730/U]

卷:
期数:
2024年02期
页码:
39-44
栏目:
理论探索
出版日期:
2024-04-30

文章信息/Info

Title:
Study on Characteristics and Formation Mechanisms of Tunnel Gas Outbursts
文章编号:
1674-8247(2024)02-0039-06
作者:
强新刚; 袁东; 何平; 岳志勤; 张广泽
中铁二院工程集团有限责任公司，? 成都 610031
Author(s):
QIANG Xingang; YUAN Dong; HE Ping; YUE Zhiqin; ZHANG Guangze
China Railway Eryuan Engineering Group Co. ，Ltd. ，Chengdu? 610031 ，China
关键词:
隧道; 突出气体; 气体检测; 成因机制
Keywords:
tunnel; gas outburst; gas detection; genesis mechanism
分类号:
U25
DOI:
10.12098/j.issn.1674-8247.2024.02.007
文献标志码:
A
摘要:
为研究高原隧道不明突出气体特征及形成机理，本文采用资料收集、现场调查测试与监测、室内岩石学、地球化学试验等方法与手段，研究突出气体赋存地质环境，揭示突出气体成分、演化过程及演化规律，结合区域地质条件演化过程，建立突出气体形成、演化模式。研究结果表明：(1)该横洞及周边地区不具备发育大规模油气资源的岩性条件，该突出气体应属有机成因与无机成因混合气范畴；(2)突出气体含量随时间呈逐渐减小趋势，气体储量有限，不具有易燃性，具有微～中等腐蚀性；(3)该横洞突出气体是一类成分多样、形成演化过程复杂的有机成因和无机成因混合气，其形成先后经历有机成因阶段与无机成因阶段，区域地质历史时期活跃的岩浆活动和出气孔处发育的碳酸盐岩为突出气体的无机成因提供了证据。研究成果可为类似高原隧道突出气体研究和评价提供参考。
Abstract:
To investigate the characteristics and formation mechanisms of unexplained gas outbursts in high-altitude tunnels，this paper employed a multidisciplinary approach encompassing data collection，field surveys，testing，mon itoring，experimental petrology，and geochemical experimentation. By examining the geological environment hosting the outburst gases，the study elucidated the composition，evolutionary processes，and governing patterns of these gases. Integrating regional geological evolution，a model for the formation and evolution of the outburst gases was established. The findings reveal：(1)The Mainling Adit and its surrounding area lack the lithological conditions necessary for the development of substantial hydrocarbon resources；hence，the outburst gas is categorized as a mixed organic-inorganic gas. (2)The concentration of the outburst gas exhibits a decreasing trend over time，indicating limited reserves and non-flammability，with moderate to low corrosivity. (3)The Mainling Adit gas outburst represents a diverse and complex mixture of organically and inorganically derived gases，whose formation involves sequential organic and inorganic stages. The region’s historically active magmatic activity and the presence of carbonate rocks at gas emission sites provide evidence for the inorganic origin of the outburst gases. These results serve as a reference for analogous studies and evaluations of gas outbursts in high-altitude tunnels.

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备注/Memo

备注/Memo:
收稿日期：2023-06-19
作者简介：强新刚(1980-)，男，高级工程师。
基金项目：中铁二院工程集团有限责任公司科技研究开发计划课题(KDNQ201004))
更新日期/Last Update: 2024-04-30