采空区地下遗煤燃烧-地表碳通量相关性分析
Correlation analysis between combustion of underground residual coal and surface carbon flux in goaf
王永军 1郑倩 2张河猛 1董伟 3张晓明 4佐佐木久郞3
作者信息
- 1. 辽宁工程技术大学 安全科学与工程学院,辽宁 葫芦岛 125105;辽宁工程技术大学矿山热动力灾害与防治教育部重点实验室,辽宁 葫芦岛 125105
- 2. 辽宁工程技术大学 安全科学与工程学院,辽宁 葫芦岛 125105
- 3. 九州大学 工学府,日本 福冈 819-0385
- 4. 辽宁工程技术大学 安全科学与工程学院,辽宁 葫芦岛 125105;辽宁工程技术大学 工程与环境研究所,辽宁 葫芦岛 125105
- 折叠
摘要
为探究复杂条件下地表碳通量对地下遗煤自燃的响应机制,通过长期监测阜新海州露天矿采空区上覆地表碳通量、土壤温度、地表裂缝、环境风速、土壤湿度等数据,并结合现场试验,研究遗煤燃烧与地表碳通量的相关性,分析地表裂缝、环境风速、土壤湿度等因素对地下煤自燃-地表碳通量的影响特征.结果表明:地下遗煤燃烧是触发地表碳通量异常响应的根本因素,碳通量与土壤温度分布呈正相关;裂缝是影响地表碳通量分布的主要因素,环境风速与地表碳通量基本呈正相关,地表碳通量一般不受土壤湿度影响,但受降雨影响较大.
Abstract
In order to explore the response mechanism of spontaneous combustion of underground coal and surface carbon flux under complex conditions,the surface CO2 flux,soil temperature,fissure,environmental wind velocity and soil humidity in Fuxin Haizhou open-pit mine were monitored for a long time.Field tests,data analysis and other methods were applied to study the correlation between the underground coal spontaneous combustion and surface CO2 flux.The influence of surface fissure,environmental wind velocity and soil humidity on the response mechanism of underground coal spontaneous combustion-surface carbon flux were analyzed.The results show that underground coal combustion is the fundamental factor triggering the abnormal surface carbon flux response.The surface CO2 flux is positively correlated with the surface soil temperature distribution.Surface fissure is the main factor affecting the surface CO2 flux distribution.The environmental wind speed is positively correlated with the surface CO2 flux.The surface CO2 flux response is generally not affected by soil humidity,but it is greatly affected by rainfall.
关键词
采空区/遗煤燃烧/地表碳通量/相关性分析/地表裂缝/环境风速/土壤湿度Key words
goaf/combustion of residual coal/soil surface CO2 flux/correlation analysis/surface fissure/environmental wind velocity/soil humidity引用本文复制引用
基金项目
国家自然科学基金(52304220)
辽宁省教育厅基本科研项目(LJKMZ20220667)
日本JSPS科研费项目(JP-20K21163)
出版年
2024
NETL
NSTL
万方数据