层析静校正技术在烟台九目山岩体完整性评价中的应用

以国家石油战略储备地下水封洞库备选基地——烟台福山区九目山岩体完整性勘探评价项目为例,阐述了层析静校正技术的原理,比较了层析静校正和折射静校正的应用效果,认为复杂地表区折射波静校正方法效果一般,而走时层析静校正方法则能准确地反演地表速度模型,较好地解决复杂地表的静校正问题。利用层析反演建立的地表速度模型剖面,计算出岩体完整性分级剖面,结合层析静校正反射波剖面进行综合解释,有效地解决了工程勘探中的地质问题。

Application of Tomographic Static Correction Technology in Evaluating the Integrity of Rock Mass of Jiumushan in Yantai City

In this paper, setting rock mass integrity exploration and evaluation project of Jiumushan in Fushan district in Yantai city as an example, which is an alternative base of water sealed underground petroleum storage caverns of national oil strategy, the principle of tomographic static correction technology is introduced, and the application result of tomographic static correction and refraction static correction are compared. It is showed that refraction static correction is not good in complex area due to large variation of lateral velocity and absence of stable refraction layers. However, the timelapse tomographic static correction method can invert the surface velocity model accurately and solve the static correction problem of complex surface. The grading profile of rock mass integrity, which is calculated by using the surface velocity model profile established by tomographic inversion, is combined with tomographic static correction reflection wave profile in integrated interpretation. The geological exploration task has been completed successfully and the geological problems in this exploration project have been solved.