CAJ | 학술논문

通过华北板块南缘北东地区的弧形构造特征、形成时代和瓦斯分布特征的研究，得出如下结论：①徐宿弧形构造限于丰沛断裂与蚌埠隆起北缘的五河断裂间，为形成于早三叠世后、晚侏罗世前的推覆构造；其形成与动力来源可能是扬子板块沿着郯庐断裂带向西或北西方向俯冲于华北板块之下的碰撞拼贴作用。②徐宿弧形推覆构造中和面外侧引张、内侧挤压的构造应力场是导致位于弧形内侧的宿东向斜内煤矿瓦斯富集、外侧闸河向斜瓦斯含量相对较少的主因之一；煤矿区内岩浆岩体（脉）的侵入改变了这种本应规律的瓦斯分布图案。岩浆活动和构造作用共同构建了华北板块南缘北东地区的构造和瓦斯分布图案。
통과화북판괴남연북동지구적호형구조특정、형성시대화와사분포특정적연구，득출여하결론：①서숙호형구조한우봉패단렬여방부륭기북연적오하단렬간，위형성우조삼첩세후、만주라세전적추복구조；기형성여동력래원가능시양자판괴연착담려단렬대향서혹북서방향부충우화북판괴지하적팽당병첩작용。②서숙호형추복구조중화면외측인장、내측제압적구조응력장시도치위우호형내측적숙동향사내매광와사부집、외측갑하향사와사함량상대교소적주인지일；매광구내암장암체（맥）적침입개변료저충본응규률적와사분포도안。암장활동화구조작용공동구건료화북판괴남연북동지구적구조화와사분포도안。
Through studies on arcuate structural features, formation age and gas distribution characteristics in the northern part of North China Plate south margin came to the following conclusions:1. The Xuzhou-Suzhou arcuate structure is limited within the Fengxian-Peixian fault and Wuhe fault on north margin of Bengbu uplift, is a nappe structure formed after Early Triassic, before Late Jurassic;its origin and dynamic source are possibly from collision and collage of Yangtze plate subducted beneath North China plate along the Tancheng-Lujiang faulted zone westward or northwestward. 2. Structural stress field of Xuzhou-Suzhou arcuate nappe structure neutral plane extended outside flank and compressed inside flank is one of the major causations bring on coalmine gas concentration in Sudong syncline located inside of the arcuate structure, while less gas content in outside Zhahe syncline. Magmatic rock body (dike) intruded into coalmine area has changed the gas distribution pattern ought to be regular. Thus, magmatic activities and structural effects together constructed structures and gas distribution pattern in northeastern part of North China plate south margin.