|
|
|
| Study on geological structure characteristics and gas occurrence law of Tucheng syncline |
| Huang Xing1，Liu Yufeng2，Tian Huanzhi3 |
| 1.Guizhou Anhe Yongzhu Technology Co., Ltd., Guiyang 550000, China；2.Guizhou Guimeishan Technology Consulting Co., Ltd., Guiyang 550000，China ; 3.Guizhou Energy Industry Research Institute. Guiyang 550000，China |
|
|
|
|
Abstract In order to explore the structural characteristics of Liupanshuitucheng syncline and the influence of gas occurrence control in Guizhou Province, based on the geological exploration of Tucheng syncline coalfield and the measured data of the mine, the structural characteristics of the syncline and the influence of mine gas occurrence are analyzed, and the factors affecting the gas occurrence in the region are analyzed. The results show that the Tucheng syncline is generally NW-SE-trending, and the axis is arc-shaped, 50 km long and 2-8 km wide. The coal measures strata are affected by multi-stage tectonics, and the coal seam differentiation is mainly thin coal seam and medium thick coal seam. The thickness of coal seam in the northwest wing of syncline gradually becomes thinner along the south-east direction of syncline, while the thickness of coal seam in the southeast wing of syncline gradually becomes thicker along the south-east direction. The coal seam gas content is mainly concentrated in 4 ~ 12 m3·t-1, and the occurrence of coal seam gas content decreases first and then increases along the southeast direction, and the occurrence law is large at both ends and small in the middle. The burial depth of coal seam, the lithology of coal seam roof and floor, the thickness of rock strata and the characteristics of mine fault structure all affect the content of coal seam gas to a certain extent.
|
|
|
|
|
|
| [ 1 ] 谢和平，吴立新，郑德志. 2025年中国能源消费及煤炭需求预测[ J ]. 煤炭学报，2019，44（ 7 ）：1 949 - 1 960.
[ 2 ] 秦 勇，高 弟，吴财芳，等.贵州省煤层气资源潜力预测与评价[Ｍ]. 徐州：中国矿业大学出版社，2012.
[ 3 ] 易同生，高 为. 六盘水煤田上二叠统煤系气成藏特征及共探共采方向[ J ]. 煤炭学报，2018，43（ 6 ）：1 553 - 1 564.
[ 4 ] 高 为，韩忠勤，吕 放，等. 六盘水地区煤层含气性地质特征及差异成因[J/OL]. 煤炭科学技术：1 - 10.
[ 5 ] 王 蔚，卫彦昭，贾天让，等. 华北煤系变形特征与煤矿瓦斯赋存规律[ J ]. 煤田地质与勘探，2021，49（ 6 ）：121 - 130.
[ 6 ] 赵俊山，陈 亮，李瑞敬，等. 地质构造及水动力条件对瓦斯赋存的控制作用[ J ]. 煤炭科学技术，2019，47（ 7 ）：74 - 81.
[ 7 ] 黄政祥，公衍伟，王怀勐. 黔北煤田绿塘井田瓦斯赋存的地质控制因素研究[ J ]. 煤炭科学技术，2018，46（ 7 ）：213 - 217. |
|
|
|
