Time-lapse geophysical technology-based study on overburden strata changes induced by modern coal mining

作     者：Wenfeng Du Suping Peng Guowei Zhu Feng Yang 

作者机构：State Key Laboratory of Coal Resources and Safe MiningChina University of Mining and TechnologyBeijing 100083China 

出 版 物：《International Journal of Coal Science & Technology》 (国际煤炭科学技术学报（英文）)

年 卷 期：2014年第1卷第2期

页      面：184-191页

学科分类：081803[工学-地质工程] 08[工学] 0818[工学-地质资源与地质工程] 

基　　金：National Science and Technology Supporting Program(2012BAB13B01) National Key Scientific Instrument and Equipment Development Program(2012YQ030126) Coal United Project of National Natural Science Foundation(U1261203) China Geological Survey Project(1212011220798) National Science and Technology Major Project(2011ZX05035-004-001HZ) 

主　　题：Time lapse Geophysical prospecting Coal mining Overburden strata Strata changes Modern coalmining 

摘      要：To study the impact of modern coal mining on overlying strata and its water bearing conditions,integrated time-lapse geophysical prospecting integrating 3D seismic,electrical and ground penetrating radar method were *** observing and analyzing the geophysical data variations of all stages of pre-mining,mining and post-mining as well as post-mining deposition stable period,impacts of coal mining on stratigraphic structure and its water bearing were studied and modern coal mining induced stratigraphic change pattern was *** research result shows that the stratigraphic structure and the water bearing of surface layer during modern coal mining have self-healing pattern with mining time;the self-healing capability of near-surface strata is relatively strong while the roof weak;water bearing selfhealing of near-surface strata is relatively high while the roof strata adjacent to mined coal beds *** to integrated time-lapse geophysical prospecting technology has extra time dimension which makes up the deficiency of static analysis of conventional geophysical methods,it can better highlight the dynamic changes of modern coal mining induced overburden strata and its water bearing conditions.