珠江口盆地深水区发育着大量的泥底辟构造。它在深水资源、环境和工程方面有着重要的实践和理论意义。一方面它容易造成深部油气泄漏和浅部地层失稳；另一方面运移的油气可以促进浅部天然气水合物和浅层气成藏以及海底冷泉生物的繁盛、冷泉碳酸盐岩的形成等。但是，目前对研究区内的泥底辟构造的精细结构和形态刻画还不详细；对其形成机制和主要控制因素等科学问题的研究还不深入；对地震上观察到的现象，如泥底辟构造几何形态的差异和侵入深度的不同等的形成原因还不能合理解释。本研究拟通过高精度的三维地震资料解释，解析泥底辟构造的精细结构和三维形态，并建立可靠的地质模型；根据改进的纳威-斯托克斯方程，利用有限体积法对三相流的侵入过程（泥底辟构造的形成过程）进行模拟。高精度三维地震资料精细刻画和定性解释结合三相流侵入过程的定量数值模拟，将会很好地揭示泥底辟构造的形成机制及其主要影响因素，并对地震上观察到的现象给出更加合理的解释。

Mud diapirs are widespread in the Pearl River Mouth Basin and they are very important to deep-water resource, environment and project. They not only cause the seepage of hydrocarbon in deep-burial reservoir and slope instability, but also promote the accumulation of gas hydrate and shallow gas in shallow depth and cold seep ecosystem prosperity and cold carbonate formation at the seabed. However, the detailed structures, formation mechanism and influenced factors of mud diapirs are still not completely uncovered. The morphological characteristics and terminated levels which we observed from seismic profiles could not been appropriately explained. In this study, detailed internal and external structures and three-dimensional morphologies of mud diapirs are uncovered, based on high resolution three-dimensional seismic data. And then sound geological model are built up. According to the geological model, revised Neville-Stokes equation and finite volume method, the intrusion processes of three-phase fluids (the formation processes of mud diapirs) are simulated. Therefore, the combination of qualitative detailed seismic interpretation and quantitative numerical simulation could reveal the formation mechanism and influenced factors of mud diapir and also perfectly explain the geometrical characteristics that we observed in seismic data.