摘要
岩溶陷落柱是煤田开采中一种常见的地质灾害体.由于地质条件、区域构造不同,岩溶陷落柱发育具有随机性特点,单从地质上对其预测并不能从根本上解决现阶段的实际问题.为正确研究识别地震勘探手段所能探测的岩溶陷落柱及其尺寸,本文给定相同地层模型及探测条件,得到对应于不同规模岩溶陷落柱的同一时间叠加剖面和偏移剖面,通过对其波剖面比较以及地震响应分析,研究不同规模岩溶陷落柱在地震剖面上的变化规律,提出识别陷落柱的依据,对正确分辨和圈定陷落柱具有一定指导意义.
Karst collapse column is a common geologic hazards in coal mining.As a result of different geological conditions and regional structures,Karst collapse column developed with features of random.It is impossible to solve the practical problems fundamentally only by projection from geology.To research and identify the karst collapse column and its size detected by the seismic exploration methods correctly,we built models with same information and detection conditions,the stacked profiles and migration profiles of different Karst collapse column scales were obtained at the same time,through the comparison of seismic wave profiles and seismic response analysis,the change rules of the Karst collapse columns with different scale in the seismic sections were researched and the basis to identify the collapse columns was proposed,which was instructive to distinguish and delimit collapse column correctly.
出处
《地球物理学进展》
CSCD
北大核心
2012年第5期2168-2174,共7页
Progress in Geophysics
基金
国家重大专项(编号:2011ZX05035)资助
关键词
陷落柱
叠加剖面
偏移剖面
地震响应
collapse column
stacked section
migrated section
seismic response
