摘要
基于天池煤矿地质勘探资料,结合区域构造背景研究了矿井地质构造特征及形成机制。天池煤矿构造属简单构造,地层总体呈走向北东、倾向北西的单斜构造,矿井内褶皱发育程度较低,断层以正断层为主,其次为低角度逆掩断层。陷落柱分布较为杂乱,成群出现,常见于褶皱轴部。自三叠纪末期开始一直受到区域构造活动的控制作用,印支期受SN向的挤压,形成了一些近EW向的构造;燕山期经历两期NWW—SEE向挤压使井田内地层及煤层主体呈NE走向;喜山早期的NE—SW向挤压,导致NE向断层的性质发生转变;上新世开始表现为区域上的伸展作用。
Based on the Tianchi coalmine geological exploration data combined with tectonic setting, mine structural features and genetic mechanism were analyzed. Tianchi mine is a monocline with overall strike NE, dip NW and structurally simple. Fold structures did not well developed in the mine, faults are mainly normal faults, low angle thrusts the second, subsided columns disorderly distributed, commonly in a group at fold axes. Mine structure was controlled by tectonic activities since late Triassic, because of NS compression, some EW structures formed during Indo-China epoch; two stages of NWW-SEE compression during Yanshanian epoch made strata and coal seam principal part in the minefield present NE strike; NE-SW compression during early Himalayan epoch, resulted in nature of NE faults changed over;, regional extending is starting at Pliocene.
出处
《中国煤炭地质》
2008年第10期70-73,共4页
Coal Geology of China
关键词
天池煤矿
构造特征
形成机制
褶皱
断裂
陷落柱
Tianchi coalmine
structural feature
forming mechanism
fold
fault
subsided column
