黄波, 乔军好, 乔晓军,等.登封煤田新登煤矿水文地质特征及瓦斯赋存规律[J].河南理工大学学报（自然科学版）,2021,40(2):49-57.

HUANG B, QIAO J H, QIAO X J, et al.Hydrogeological characteristics and gas occurrence rules in Xindeng coal mine ofDengfeng coalfield[J].Journal of Henan Polytechnic University(Natural Science) ,2021,40(2):49-57.

登封煤田新登煤矿水文地质特征及瓦斯赋存规律

黄波1, 乔军好2, 乔晓军2, 郑启明1

1.河南工程学院 资源与环境学院，河南 郑州  451191;2.中煤新登郑州煤业有限公司，河南 郑州 452470

摘要:为了揭示登封煤田新登煤矿水文地质特征及瓦斯赋存规律，以便更好地为安全生产服务，基于煤层瓦斯运移、散失、赋存理论，结合矿井勘探和生产揭示的瓦斯地质资料，分析新登煤矿瓦斯赋存、分布规律。通过拟合煤层埋深、煤层厚度、直接顶板特征、底板灰岩水矿化度与煤层瓦斯含量的数值关系，结合太原组灰岩地下水动力场分布特征，划分水文地质单元，探讨不同单元内瓦斯赋存特征及地质控制机理。结果表明：二1煤层底板灰岩水矿化度为312 ~ 656 mg /L，煤层瓦斯含量与矿化度相关性最好；矿井水文地质划分为径流带、中等径流带、弱径流-滞留带3种水文地质单元，弱径流-滞留带内瓦斯含量最高，中等径流带次之；受构造、水文地质条件的双重控制，在新登煤矿西北部形成单斜-水动力封堵型瓦斯含量富集区，瓦斯最为富集，中部形成单斜-水动力冲洗型瓦斯含量过渡区，瓦斯较为富集；预测的矿井深部瓦斯含量为 5 ~7.5 m³/（t • daf）。

关键词:瓦斯赋存;矿化度;水动力条件;登封煤田;新登煤矿;地质特征;赋存规律

doi:10.16186/j.cnki.1673-9787.2020050072

基金项目:国家自然科学基金资助项目（41502154 ）；河南省科技攻关重点项目（182102310016 ）；河南省高等学校重点科研项目

收稿日期:2020/05/24

修回日期:2020/08/24

出版日期:2021/03/15

Hydrogeological characteristics and gas occurrence rules in Xindeng coal mine ofDengfeng coalfield

HUANG Bo1, QIAO Junhao2, QIAO Xiaojun2, ZHENG Qiming1

1.School of Resources and Environment Engineering， Henan University of Engineering， Zhengzhou  451191 ， Henan， China;2.China Coal XinDeng Zhengzhou Coal Co. ，Ltd. ， Zhengzhou  452470 ， Henan， China

Abstract:Based on the theory of coal seam gas migration， loss and occurrence， combined with gas geological data revealed by mine exploration and production， the gas occurrence and distribution law of Xindeng coal mine was analyzed to reveal the Hydrogeological characteristics and gas occurrence rules in Xindeng coal mine of Dengfeng coalfield. By fitting the numerical relationship between coal seam depth， coal seam thickness， direct roof characteristics， floor limestone water salinity and coal seam gas content， combined with the distribution characteristics of the limestone groundwater dynamic field of the Taiyuan formation limestone， the hydrogeological units were divided， and the gas occurrence characteristics and geological control mechanism in different units were discussed. The results showed that the total dissolved solids （ TDS） of the No. 21coal seam floor was between 312 〜656 mg/L， and the coal seam gas content had the best correlation with the salinity ； The mine was divided into three types of hydrology ， i. e. runoff zone ， medium runoff zone ， and weak runoff-retention zone. In the geological unit， the gas content in the weak runoff-retention zone was the highest， followed by the medium runoff zone ； Under the dual control of structure and hydrogeological conditions， a monoclinic-hydrodynamic plugging gas content enrichment area was formed in the northwest of Xindeng coal mine， the gas was most enriched ，and a monoclinic-hydrodynamic flushing gas content transition zone was formed in the middle， and the gas was relatively rich ； The predicted gas content in the deep part of the mine was between 5 〜7.5 m³/（t • daf）.

Key words:gas occurrence;total dissolved solid;hydro-dynamics conditions;Dengfeng coalfield;Xindeng coal mine;hydrogeological characteristic;occurence rule

登封煤田新登煤矿水文地质特征及瓦斯赋存规律_黄波.pdf