The test results show that the optimal layout can effectively improve the flow condition for navigation at the entrance area of approach channel.

结果表明，泄洪闸分侧布置可有效地改善引航道口门区通航水流条件。

youdao

Planning sand extraction scheme in accordance with potential channel change and combining channel modification with sand extraction can improve navigation condition to a certain extent.

科学合理规划采砂方案，顺应河床演变趋势，将整治河道与采砂疏浚河道有机地结合起来，可除害兴利，在一定时期内和一定程度上改善航道条件。

youdao