Based on the current state of research and application of the large thin-wall cylindrical structures used in coastal harbors and seawalls both at home and abroad,we design a new type of thin-wall cylindrical structure for the channel regulation.Flume experiments are conducted for its stability without overturning.Results show that under the most unfavorable working condition with 34 m water depth,anti-overturning velocities in unfilled,sand-filled and sand-filled with seating cases are 2.90 ms,3.18 ms and 4.95 ms respectively,which can keep different regulation structures stable.The application of this new type of large cylindrical structure in channel regulation buildings,such as spur dike,training dike and submerged dike,will be promising.