在土工离心模型试验中，摄影是一种重要的测试手段，其具有非接触、直观、测试对象为整个压缩面而非点等优点，但如何拍摄高速旋转的土工离心模型完整、清晰图像一直是一个技术难点，通过定点高速闪光摄影技术较好地解决了这一问题。介绍了定点高速闪光摄影的原理，闪光时间、闪光能量的确定，定点高速闪光摄影同步控制以及实际应用的结果。

Photography is an important approach in geotechnical centrifuge model tests. It is intuitive, noncontact, and takes compression plane instead of points as the test object. It’s a technical difficulty to get clear and complete photos of geotechnical centrifuge model while it’s rotating with high speed. The authors introduced the principle of applying fixed-spot high-speed flash photography in geotechnical centrifuge. The determination of flash duration and power, the time-series synchronous control as well as the result of applying this photography system to geotechnical centrifuge were also presented.