【摘要】 为掌握陷落柱赋存状态和内部结构,基于地震勘探反射波原理,采用理论分析和现场实践相结合的方法,建立了陷落柱正演模型,对陷落柱成因及探测方法进行研究。研究表明:1)赋存陷落柱需满足岩层条件、水作用条件和构造发育条件,可溶性岩体在流水和应力相互作用下坍塌垮落,形成陷落柱。2)陷落柱物理特征中的电性、磁性、放射性及波阻抗表现出差异性,是勘探的基本原理。3)对内部为均匀体结构的陷落柱模型正演,得到其在地震时间剖面上的响应特征,从而对陷落柱位置和形态判读。该研究可为类似条件陷落柱地震勘探提供一定的指导。更多还原

【Abstract】 In order to master the occurrence and internal structure of collapse columns,bases on reflected wave principle in seismic prospecting,with the combination of theoretical analysis and field practice,the forward model is established to study the origin and prospecting methods of the collapse columns. The results show that 1)The occurrence of the collapse column should satisfy the condition of rock strata,water and structure development.Soluble rocks collapse form collapse columns under the interaction of running water and stress. 2) The electrical property,magnetic property,radioactivity and wave impedance show the difference in physical properties of collapse columns is the rationale for prospecting. 3) The forward model of collapse columns with homogeneous internal structure can achieve the response characteristics in seismic time-section and then can interpret the location and form. The study can offer certain guidance for seismic prospecting of collapse columns in the similar condition.更多还原