摘要
坪上煤矿是福建省近年来"三下"找煤的成功案例,在早白垩世坂头组(红层)和早石炭世林地组(推覆体)下发现了煤系。矿区构造复杂,煤系位于连城复式向斜东翼,整体以单斜产出,局部发育次级褶皱,受后期断裂作用,推覆断层和滑脱断层控制了煤系的产出形态,全区构造属复杂型(第Ⅲ类型)。煤系为童子岩组三段,具海陆交互相成煤环境,含可采煤层5层,煤层编号3,4,5,6,7,平均厚度0.52~1.54m。全区煤层稳定类型属较稳定类型(第Ⅱ类型),可采煤层煤质较好,通过构造控煤因素浅析与找煤预测认为矿区西部有较大的找煤前景。
Pingshang Coal Mine in Liancheng County is a successful case of " Three find coal Types of cover layer" in recent years,in the early Cretaceous Bantou group(red layer)and early Carboniferous Lindi group(nappe body)found coal system under it,Geological structure of Mining area is complex,The coal system is located in the east wing of the Compound syncline of Liancheng,with Monoclinic rock formation output and found secondary folds at Part of the mining area.Due to the late faults,The thrusting fault and the slip fault control the outputting form of coal,The structure of the whole area It belongs to the complex type(Ⅲ type).The coal system is the third paragraph of the Tongziyan group,With the Coal Sedimentary environment of sea and land Interaction,including five layers of coal seam,coal seam be numbered 3,4,5,6,7 and average thickness of 0.52-1.54 m.The stability types of coal seams in the whole area is a relatively stable type(Type Ⅱ).The coal quality is good.By analysis the controlling factors and prediction of looking for ore,it is considered that there is a large coal prospect in the west of the mining area.
出处
《福建地质》
2017年第4期286-295,共10页
Geology of Fujian
基金
福建省地质勘查专项资金勘查项目
编号闽地专资任[2010]13号
闽地专资任[2011]3号
闽地专资任[2012]4号
关键词
煤矿地质特征
推覆构造
找煤预测
连城坪上
coal mine
geological characteristics
nappe structure
prospecting prediction
Pingshang area in Liancheng county
