石油污染对黄河口沉积物工程性质的影响

The Influence of Petroleum Contamination to Engineering Properties of Sediment at the Yellow River Estuary

对黄河口胜利油田某油井附近沉积物进行石油污染状况调查研究，采用坑探试验现场调查污染范围，发现油井沉积物在一定范围内存在石油污染，污染多在0．2～1．5m深度内，水平距离在140-440m之间。原位测试污染沉积物强度，取样进行室内石油浓度和沉积物物理力学指标测试。石油污染沉积物物理力学性质与未污染的有较大差别，污染后沉积物的重度、渗透系数和强度等均有所降低。污染后的沉积物结构，多成块状和板状结构。

This paper studied the scope and properties of petroleum contaminated sediment（PCS） near one oil well at the Yellow River Estuary. Firstly, the scope of petroleum contamination was investigated by using exploratory pit. Petroleum contamination existed at a certain extent around the oil well at 0. 2- 1.5 m in depth, 140-440 m in level. Then, the strength of PCS was measure In-Situ, and soil sample was taken for measuring oil concentration, physical and mechanical properties indoor. The results show that properties of PCS are different from those of un-contaminated. The gravity, permeability and strength after contamination will decrease. Finally, the analysis of soil structure reveals that most of PCS are in all massive and plate.