道间距和炮间距对陷落柱探测的影响  

The influence of receptor interval and shot interval on the detection of collapse column

作　　者：刘家豪 朱国维[1] Liu Jiahao;Zhu Guowei(College of Geoscience and Surveying Engineering,China University of Mining and Technology-Beijing,Beijing 100083,China)

机构地区：[1]中国矿业大学(北京)地球科学与测绘工程学院,北京100083

出　　处：《矿业科学学报》2021年第4期389-396,共8页Journal of Mining Science and Technology

基　　金：国家重点研发计划(2018YFC0807801)。

摘　　要：本文以陷落柱的地质特征以及陷落柱地震波传播特征为基础构建陷落柱模型,采用声波方程基于单因素变化分别模拟不同的道间距和炮间距对陷落柱探测的影响,利用偏移剖面反射波振幅变化并结合地震属性分析与人工解释进行陷落柱断裂边界解释,以陷落柱横向分辨率的平均偏差为指标来判断探测精度,并对陷落柱直径解释误差采用射线追踪的方法进行了分析。结果表明,小道间距有助于提高陷落柱勘探分辨率,道间距为5 m、炮间距为40 m时,解释得出的陷落柱直径的精度相对较高。Based on the geological characteristics and the seismic wave propagation characteristics of the collapse column,a collapse column model is constructed.Considering the change of single factor variation and the acoustic equation used to simulate the effect of different receptor interval and shot interval on the collapse column.Interpretation of the collapsed column fracture boundary is carried out by using the reflected wave amplitude changes of the offset profile and combined with seismic attribute analysis and manual interpretation.The detection accuracy is judged by the average deviation of the horizontal resolution of the collapsed column as an index.And the interpretation error of the diameter of the collapsed column is analyzed by ray tracing method.The results show,that the small receptor spacing is beneficial to the exploration of the collapse column,and when the receptor interval is 5 meters and the shot interval is 40 meters,it is favorable to the exploration of the collapse column model.

关 键 词：陷落柱 正演模拟 地震勘探 道间距 炮间距 属性分析 射线追踪 

分 类 号：TD15[矿业工程—矿山地质测量]