【摘要】 河流改道是对河道进行裁弯取直使河道变直变短,进而加大河床的坡降,河水流速加大。河水流速加大就会产生河床的冲刷,导致河床降低,沿河路堤墙、护岸墙等墙体基础被淘空,导致墙体倒塌。此外,公路建设中,也还存在拦砂坝的下游冲刷、拦砂坝与岸坡的交接及护岸工程与天然河岸的交接处的冲刷、旱桥下的冲刷等问题。针对这些问题研究了应采取的措施。更多还原

【Abstract】 Because of the straightening and shortening in river realignment, the water head and flowing speed increases and it leads to the occurence of erosion and deposition in the riverbed, cave-in in the (embankment) and collapse of the protective wall. Furthermore, during highway construction there existed other outstanding issues such as the erosion in downstream of a dam, the erosion under a dry bridge, the (erosion) at the joint of a sand-sediment dam and the bank slope as well as at the joint of a protective project and the river embankment. In this paper, the protective measures related to above-mentioned problems are (investigated.)更多还原