The external geometry, internal architecture and sedimentary evolution processes of the deep-water channel system in Zhujiang Formation in the Midwest of Baiyun Sag have been revealed in detail according to the integrated analysis of 3D seismic data and a large number of drilling and logging data sets. In addition, the controlling effect of sediment supply, sea level change, shelf break zone and palaeogeomorphology on the deep-water channel system was discussed. Finally, it is concluded that the development and distribution of the deep-water channel system is controlled by both provenance and landform. The deep-water channel system can be subdivided into different sections: the provenance area, the waterway and the sedimentary area. It presents the features of a ‘three segment channel’ which indicates that the fluid energy of the gravity flow changes from weak to strong and then weak along depositional inclination. Because the processes of internal filling and latter reformation which the channel experienced in different sections during different periods are complex, the inner filling characteristics of the channels are different, mainly high sand-shale ratio superimposed channel (sand-rich deposit) and low sand-shale ratio channel-levee complex (sand-lean deposit). It is clear that the development and spatial distribution characteristics of deep-water channel system in Zhujiang Formation are controlled by the shelf edge delta of Pearl River, forced regression, the shelf break zone and restricted landform collectively. The shelf edge delta at the lower member of Zhujiang Formation in the north of Baiyun Sag provides the large amount of clastic sediments for the development of deep-water channel system. Forced regression drives the continuous transportation of the sediments from shelf edge to deep-water channel system. The shelf break and the fault slope break provide favorable paths and topographic conditions for transportation of the sediments in the deep-water channel system. The fracture systems and the subaqueous low uplifts influenced the spatial distribution of the deep-water channel system together.

通过对3D地震数据和大量钻井，测井数据集的综合分析，详细揭示了白云凹陷中西部珠江组深水航道系统的外部几何结构，内部构造和沉积演化过程。 。此外，还讨论了沉积物供应，海平面变化，架子破裂带和古地貌对深水航道系统的控制作用。最后得出结论，深水航道系统的发展和分布受物源和地形的共同控制。深水航道系统可细分为不同部分：物源区，水路和沉积区。它呈现了“三段通道”的特征，这表明重力流的流体能沿着沉积倾斜度从弱变为强，然后变为弱。由于不同时期河道在不同时期经历的内部充填和后期改造过程复杂，因此河道的内部充填特征不同，主要是高砂页岩比叠加河道（富砂沉积物）和低沙页岩比河道-堤坝复合体（贫砂矿床）。显然，珠江组深水航道系统的发展和空间分布特征受珠江三角洲陆缘三角洲，强迫回归，陆架断裂带和限制性地貌共同控制。白云凹陷北部珠江组下部的陆缘三角洲为深水航道系统的发展提供了大量的碎屑沉积物。强迫回归驱动沉积物从架子边缘到深水通道系统的连续运输。陆架折断和断层坡折为深水航道系统中的沉积物输送提供了有利的路径和地形条件。裂缝系统和水下低隆起共同影响了深水河道系统的空间分布。陆架折断和断层坡折为深水航道系统中的沉积物输送提供了有利的路径和地形条件。裂缝系统和水下低隆起共同影响了深水河道系统的空间分布。陆架折断和断层坡折为深水航道系统中的沉积物输送提供了有利的路径和地形条件。裂缝系统和水下低隆起共同影响了深水河道系统的空间分布。