对河床泥沙分别为黏粒、细砂、极细卵石时在不同间隙比（管道掩埋于河床质下

When the riverbed sediment is clay, fine sand, and very fine pebbles, the axial center position of the pipeline under different clearance ratios (pipe buried under the river bed, half of the pipeline buried and half exposed, and the pipeline suspended on the river bed) The profile pressure and strain were monitored, and the results are shown in Figures 10, 11 and 12, respectively.

The pressure and strain of the pipeline axial center position when the sediments of the riverbed were slime, fine sand and very fine pebbles were monitored in different clearance ratios (the pipe was buried under the riverbed mass, the pipe was buried half exposed, and the pipe was suspended over the riverbed mass), and the results were shown in Figures 10, 11 and 12, respectively.

The section pressure and strain at the axial center of the pipeline were monitored under different clearance ratios (buried under the bed material, half buried and half exposed, suspended on the bed material) when the bed sediment was clay, fine sand and very fine pebble. The results are shown in FIG. 10, FIG. 11 and FIG. 12.<br>