稳态瑞利波勘探的探测深度及影响因素分析

稳态瑞利波勘探所能达到的勘探深度是众多使用者越来越关心的话题。作者依据瑞利波勘探的基本原理和多年的实践经验,对影响勘探深度的各种因素,包括岩层的平均速度vR、使用的最低频率fmin、震源能量、各种地质因素、耦合因素等一一作了分析,并列举了多种条件下勘探深度的实际数据。指出综合运用合理参数,进一步提高对小异常的识别能力,有可能在目前基础上把瑞利波方法的勘探深度再提高一步。

INVESTIGATION DEPTH AND INFLUENCE FACTOR ANALYSIS OF STEADY STATE RAYLEIGH WAVE EXPLORATION

The investigation depth at where the steady state Rayleigh wave exploration could be arrived is a topic with which the numerous users are more and more comcerned.Starting fron the basic principal of Rayleigh wave exploration and practical experiences for many years,in this paper the various factors which have influence on the exploration depth,including the mean velocity R of rock beds,the used lowest frequency fmin,source energy,various geologic factors,coupled factors and so on are analyzed one by one,and the example data of exploration depth under various conditions are listed.It is pointed out that utilizing compre hensively the rational parameters and further increasing the recognition capacity for small anomalies,the current exploration depth of Rayleigh wave method could be increased.