采空超声波正演物理模拟  

ULTRASONIC PHYSICAL FORWARD SIMULATION FOR INVESTIGATING THE ABANDONED PIT

作　　者：陈钢[1] 梁京华[1] 陈千[1] 程曾庆 

机构地区：[1]煤炭科学研究总院北京开采所,中国煤田地质局物探所模型室

出　　处：《煤田地质与勘探》1995年第4期54-59,共6页Coal Geology & Exploration

基　　金：国家自然科学基金

摘　　要：通过超声波地震正演模拟试验分析，对矿山典型单巷道采空条件下，不同空区尺寸的反射波动力学特征研究，揭示了不同空区尺寸与波长比时的地震波振幅特征关系，得出矿山采空区地震探测的最小分辨率为３ｍ；阐述了简化后的大面积采空类型相应地震反射波的运动学和动力学特征规律；讨论了复合巷道采空类型的反射纵波及横波模拟。n this paper,by the ultrasonic physical forward simulation,the reflection dynamic characteristics on the single entry type for diffrent void dimensions are analyzed,the relationships of the reflection amplitude with the size of the void to wavelength ratio are revealed,and 3 meter minimum resolving power in reflection for discovering the void are found out.Secondly,the type of large mining area is simplified, and its kinematic and dynamic characteristics of reflection are expounded. Finally,the reflected longitudinal and transverse wave for locating the multiple entry type are discussed.

关 键 词：地震勘探 超声波 采空区 正演物理模拟 煤矿 

分 类 号：P631.413[天文地球—地质矿产勘探] TD163.1[天文地球—地质学]