基于微渗漏机制的甲烷氡气异常特征及其在煤矿隐蔽致灾因素勘探中的意义

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国家科技期刊平台
NETL
NSTL
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中文摘要：煤矿隐蔽致灾因素是指隐伏在煤层及其围岩内不易直接发现而开采过程中可能诱发矿山灾难的地质构造和不良地质体.甲烷和氡气是煤矿中常见的有害气体,其异常释放往往伴随着煤层的不良构造与瓦斯聚集等隐蔽灾害.本文以阳泉新元煤矿为工作区,首次基于微渗漏机制,优选了对隐蔽致灾地质因素敏感性强的甲烷、氡气两种地球化学指标,探讨土壤甲烷和氡气指标地球化学异常特征对煤矿隐蔽致灾因素的指示作用,通过动态监测(408 个点位的土壤游离烃甲烷与氡气指标)和面积测量(416 个点位的土壤游离烃甲烷、酸解烃甲烷指标以及 651个点位的土壤氡气指标)的实测数据,获取了下伏含水破碎带、煤层气渗漏带、微构造裂隙带、陷落柱环绕带等致灾因素分布的地球化学响应特征;同时与广域电磁法开展联合勘探分析,完成煤矿构造类、瓦斯聚集类隐蔽致灾因素的验证识别,推测圈定出工作区潜在致灾因素的分布区段,验证了烃类微渗漏理论在煤矿隐蔽致灾因素勘探中的适用性与实用性,为甲烷、氡气地球化学指标在煤矿隐蔽致灾因素普查勘探中的广泛应用奠定了基础,对于提高煤矿安全生产具有重要意义.

外文标题：Methane and radon anomaly characteristics derived based on the microleakage mechanism and their implications for the exploration of hidden disaster-causing factors in coal mines

外文摘要：Hidden disaster-causing factors in coal minesdenote the geological structures and unfavorable geobodies that are concealed in coal seams and surrounding rocks and may cause mine disasters during mining.Methane and radon are common harmful gases in coal mines,and their abnormal release is often accompanied by hidden disasters like unfavorable structures of coal seams and gas accumula-tion.With the Xinyuan coal mine in Yangquan City as the study area,this study selected two geochemical indices based on the micro-seepage mechanism:Methane and radon,which are highly sensitive to hidden disaster-causing geological factors.Building on the dy-namic monitoring data of methane and radon in free hydrocarbons at 408 points,and the area survey data of methane in free and acid-hydrolyzed hydrocarbons at 416 points and soil radon at 651 points,this study obtained the geochemical characteristics reflecting the distributions of disaster-causing factors like the underlying water-bearing fracture zones,coal bed methane see page zones,microstruc-tural fracture zones,and collapse column surround zones.Moreover,this study conducted joint exploration and analysis combined with the wide-field electromagnetic method,completing the verification and identification of hidden disaster-causing factors related to struc-tures and gas accumulation in coal mines.Furthermore,it delineated the distribution sections of potential disaster-causing factors in the study area.This study demonstrates the applicability and practicability of the hydrocarbon microseepage theory in the exploration of hid-den disaster-causing factors in coal mines.It also lays a foundation for the extensive application of methane-radon geochemical indices in the survey and exploration of hidden disaster-causing factors in coal mines,thus holding critical significance for enhancing the safety of coal mine production.

外文关键词：

hidden disaster-causing factors in coal minesacid-hydrolyzed hydrocarbonfree hydrocarbonsoil radondynamic moni-toringXinyuan coal mine in Yangquan City,Shanxi Province

作者：

贺会策、孙春岩、唐侥、张宗庆、冶北北、赵浩、王栋琳

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作者单位：

中国地质调查局广州海洋地质调查局三亚南海地质研究所,海南三亚 572024

自然资源部海底矿产资源重点实验室,广东广州 511458

中国地质大学(北京) 工程技术学院,北京 100083

中国地质调查局长沙自然资源综合调查中心,湖南长沙 410600

天津华北地质勘查局核工业二四七大队,天津 301800

中国地质调查局西安矿产资源调查中心,陕西西安 710100

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关键词：

煤矿隐蔽致灾因素酸解烃游离烃土壤氡气动态监测山西阳泉新元煤矿

基金：

国家重点研发计划项目自然资源部海底矿产资源重点实验室开放基金课题

项目编号：

2018YFC0807800KLMMR-2018-A-05

出版年：

2024

DOI：

10.11720/wtyht.2024.1354

物探与化探

中国国土资源航空物探遥感中心

物探与化探

CSTPCD

影响因子：0.828

ISSN：1000-8918

年,卷(期)：2024.48(5)

参考文献量27