浅层地震反射波法勘探设计

Exploration Design of Shallow Seismic Reflection Wave Method

摘要: 随着电子及计算机技术的飞速发展，浅层地震勘察方法已趋于成熟，由于具有较强的解决工程地质问题的能力和较高的勘察精度，其中浅层地震勘察已得到较广泛的应用和发展，浅层地震探测方法是研究人工在地面激发的地震波，在地壳表层数百米范围内的传播规律，用以解决矿产地质、水文及工程地质问题的一种地球物理方法，其主要方法是浅层折射波和反射波法。其中浅层地震反射波法是当前城市地质勘探的主要方法。本设计以净月区某场地东区地质勘探为例，通过试验确定了合理的观测系统及仪器设置的一系列参数，并且通过野外数据采集获得了原始的地震资料数据。通过Vista地震处理软件一步步的地震数据处理，得到最终的反射波地震剖面，并对其进行地质解释，获得了测线范围内地层的空间分布、性质和活动性。

Abstract: With the rapid development of electronic and computer technology, shallow seismic survey me-thods have become mature. Because of their strong ability to solve engineering geological prob-lems and high survey accuracy, shallow seismic survey has been widely used and developed. Shallow seismic survey methods are geophysical methods to study the propagation law of artificial ground-induced seismic waves within hundreds of meters of the surface layer of the earth’s crust and to solve mineral geology, hydrology and engineering geological problems. The main methods are shallow refraction and reflection. Among them, shallow seismic reflection method is currently the main method for urban geological exploration. This design takes the geological exploration in the eastern part of a site in jingyue district as an example, determines a series of parameters of reasonable observation system and instrument settings through experiments, and obtains the original seismic data through field data acquisition. Through step-by-step seismic data processing by Vista seismic processing software, the final reflected wave seismic profile is obtained, and the geological interpretation is carried out to obtain the spatial distribution, nature and activity of strata within the survey line.