中国煤炭地质
中國煤炭地質
중국매탄지질
COAL GEOLOGY OF CHINA
2014年
4期
6-10
,共5页
荥巩煤田%二1煤层%层间滑动断层%构造煤%瓦斯
滎鞏煤田%二1煤層%層間滑動斷層%構造煤%瓦斯
형공매전%이1매층%층간활동단층%구조매%와사
Xinggong coalfield%coal II1%interlayer gliding fault%tectonoclastic coal%gas
荥巩煤田位于豫西强变形区的嵩山背斜北翼，区内断块组合特征明显，聚煤期后构造变形对二1煤层的改造强烈。通过分析煤田构造、二1煤层及煤岩特征对煤层瓦斯赋存的影响，认为层间滑动断层是煤田中普遍发育的一种构造样式，印支期嵩山地区存在着区域性的顺二1煤层发育的层间滑动断层，层间滑动引起的煤层流变造成了“三软”构造煤的发育和煤层厚度的剧烈变化，煤厚的变化及煤体结构的破坏是煤层瓦斯赋存不均衡和突出的根本原因。
滎鞏煤田位于豫西彊變形區的嵩山揹斜北翼，區內斷塊組閤特徵明顯，聚煤期後構造變形對二1煤層的改造彊烈。通過分析煤田構造、二1煤層及煤巖特徵對煤層瓦斯賦存的影響，認為層間滑動斷層是煤田中普遍髮育的一種構造樣式，印支期嵩山地區存在著區域性的順二1煤層髮育的層間滑動斷層，層間滑動引起的煤層流變造成瞭“三軟”構造煤的髮育和煤層厚度的劇烈變化，煤厚的變化及煤體結構的破壞是煤層瓦斯賦存不均衡和突齣的根本原因。
형공매전위우예서강변형구적숭산배사북익，구내단괴조합특정명현，취매기후구조변형대이1매층적개조강렬。통과분석매전구조、이1매층급매암특정대매층와사부존적영향，인위층간활동단층시매전중보편발육적일충구조양식，인지기숭산지구존재착구역성적순이1매층발육적층간활동단층，층간활동인기적매층류변조성료“삼연”구조매적발육화매층후도적극렬변화，매후적변화급매체결구적파배시매층와사부존불균형화돌출적근본원인。
The Xinggong coalfield lies in the north limb of Songshan anticline, western Henan strongly deformed zone. Fault block as-semblages is significant in the area, post coal accumulation stage structural deformation has strongly reformed the coal II 1. After ana-lyzed the impacts from coalfield structure, coal II1 and coal lithotype on coal seam gas hosting, considered that the interlayer gliding faults are widely developed in the coalfield. During the Indo-Chinese epoch, coal II1 bedding interlayer gliding faults existed regionally and caused the rheology of coal seams and finally brought up“three soft”(soft roof, coal and floor) tectonoclastic coal and dramatically changed coal seam thicknesses. The coal thickness changes and coal structure destruction are basic reasons of coal seam gas hosting disproportion and outburst.
