深部隐伏构造特征地震解释及对煤矿安全的影响  

Seismic interpretation of deep buried structure characteristics and its influence on coal mine safety

作　　者：杜文凤[1] 彭苏萍[1] 师素珍[1] 

机构地区：[1]中国矿业大学(北京)煤炭资源与安全开采国家重点实验室,北京100083

出　　处：《煤炭学报》2015年第3期640-645,共6页Journal of China Coal Society

基　　金：国家科技支撑计划课题资助项目(2012BAB13B01);国家自然基金煤炭联合基金资助项目(U1261203);中国地质调查局基金资助项目(1212011220798)

摘　　要：为了查明隐伏构造带的分布,针对研究区不同年份采集的三维地震资料进行了连片叠前时间偏移处理,采用全三维层位追踪和地震多属性断层识别,获得了研究区主要煤层构造形态和断裂构造分布。根据三维地震解释成果,依据隐伏构造带的塌陷范围及破碎程度,将隐伏构造划分为正常带、影响带和断陷带。隐伏构造带平面上展布复杂,剖面上浅层断距大,深层断距小,具有断陷带的发育特征。隐伏构造带内的断层可以将上到松散层含水层,下到灰岩岩溶裂隙含水层的各个含水层连通起来,因此隐伏构造带构成突水威胁。随着开采水平加深,采动影响加大,隐伏构造带突水的危险性也将增大。在煤矿开采进程中,为避免发生突水灾害,要采取必要的安全防范措施。In order to ascertain the distribution of buried structure zones,3D seismic data sets acquired in different time periods for the research area were merged and processed by pre-stack time migration,in which the distribution of structural configuration and faulted structure of major coal seams in the research area was obtained through full-3D horizon tracking and multi-seismic-attribute fault identification.Based on the 3D seismic interpretation results,as well as collapse scope and fractured extent,the buried structure were divided into normal zone,influence zone and fault depression zone.The buried structure zones have a complex distribution in map view,while in profile; they have large fault displacement in shallow formations and small fault displacement in deep formations,which has fault depression characteristics.Faults within the buried structure zones can connect through all aquifers from upper unconsolidated formations to lower karst fissure bearing limestone formations,therefore,the buried structure zones lead to water bursting risks.As mining depth goes deeper and mining impact increases,the water bursting risks of buried structure zones also increase.In coal mining process,to avoid water burst hazard happening,some necessary safety precautions need to be taken.

关 键 词：隐伏构造 地震解释 煤矿安全 分布特征 隐伏构造“三带”划分 

分 类 号：P631.4[天文地球—地质矿产勘探]