长江科学院等单位组成国家防总湖北省工作组赴湖北省指导防汛工作

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(编辑:占学军)

Stability Analysis of Typical Bank Slope Based on

Slope Erosion in Jingjiang River

TAO Gui-lan1，TAN Bin-zheng2, SHU Liang3

(1.College of Harbor , Coastal and Offshore Engineering , Hohai University , Nanjing 210098 , China;

2.(]CCC Fourth Harbor Consultants Co.，Ltd.，Guangzhou 510230，China;3.Nanjing Changjiang Waterway Engineering Bureau，Nanjing 210011，China)

Abstract： According to the features of typical dual soil structure in the Jingjiang River，the calculation formula of

transverse erosion was

employed

to

study

the

influences of

flow

velocity and

rosion rate of bank slope, as well as the variation law^ of morphologic changes of bank slope under fluctuation of wa­ter level.On the basis of saturated-unsaturated seepage theory，a two-dimensional unsteady seepage model was es­tablished by using SEEP//w program and the change process of seepage field of bank slope was simulated. Further­more， on the basis of calculation of pore-water pressure field，the change law of slope stability in consideration of bank erosion or not was analyzed by using Morgenstem, s method.Results show^ that when bank erosion is not con­sidered ，slope stability increases with the raise of water level and declines with the drawdown of water level; butwhen bank erosion the falling rate of flood period

and

monitored specially.

is

considered，slope stability decreases

of

both

with

the raise and

the bank

safety factors is the final stage

obviously larger than that water level falling are two

without considering dangerous

sedime

periods of slop

Key words：bank slope stability; slope erosion； water level fluctuation； saturated-unsaturated seepage; dual soil

structure

长江科学院等单位组成国家防总湖北省工作组赴湖北省指导防汛工作

遵照国家防汛抗旱总指挥部（以下简称“国家防总”）指示，长江防汛抗旱总指挥部委派以长江科学院副 院长林绍忠（组长）、长江防汛抗旱办公室调度处副调研员陈炯宏、河流研究所防洪减灾室副主任李凌云一

行3人组成国家防总湖北省工作组，于2016年6月30日至2016年7月7日，前往湖北境内长江干堤、重要 水库、湖泊、涵闸、险情点等现场，检查指导防汛工作，确保安全度汛。

(摘自：长江水利科技网)