长江中游沙卵石河段枯水水位变化及其对通航的影响
发布时间：2018-10-15 09:37
【摘要】：三峡工程蓄水以来,长江中游宜昌至大埠街这一沙卵石河段的河床持续冲刷下切,枯水同流量下水位逐步下降。基于实测资料,对枯水水位变化的原因进行研究,并就枯水水位下降对通航条件的影响进行分析。认为:沙卵石河段内的河床冲刷下切是枯水同流量下水位下降的主要原因,但河床粗化在一定程度上减小了水位下降幅度;随着枯水水位的进一步下降,为确保葛洲坝船闸的正常运行,三峡工程枯水期调度压力将逐步增加,且局部卵石浅滩的碍航问题也会日益突出。
[Abstract]:Since the water storage of the three Gorges Project, the bed of the sandy pebble section from Yichang to Dabu Street in the middle reaches of the Yangtze River has been continuously scoured and cut down, and the water level at the same flow rate has gradually decreased. Based on the measured data, the causes of the variation of the low water level are studied, and the influence of the low water level on the navigable conditions is analyzed. It is considered that the scouring and cutting of the river bed in the sandy pebble reach is the main reason for the decrease of the water level at the same flow rate, but the coarsening of the river bed reduces the water level to a certain extent, and with the further decrease of the low water level, In order to ensure the normal operation of Gezhouba shiplock, the dispatching pressure of the three Gorges Project will increase gradually during the dry season, and the problem of hindering navigation in the local pebble shoals will become increasingly prominent.
【作者单位】： 长江航道规划设计研究院;
【分类号】：U612.23
[Abstract]:Since the water storage of the three Gorges Project, the bed of the sandy pebble section from Yichang to Dabu Street in the middle reaches of the Yangtze River has been continuously scoured and cut down, and the water level at the same flow rate has gradually decreased. Based on the measured data, the causes of the variation of the low water level are studied, and the influence of the low water level on the navigable conditions is analyzed. It is considered that the scouring and cutting of the river bed in the sandy pebble reach is the main reason for the decrease of the water level at the same flow rate, but the coarsening of the river bed reduces the water level to a certain extent, and with the further decrease of the low water level, In order to ensure the normal operation of Gezhouba shiplock, the dispatching pressure of the three Gorges Project will increase gradually during the dry season, and the problem of hindering navigation in the local pebble shoals will become increasingly prominent.
【作者单位】： 长江航道规划设计研究院;
【分类号】：U612.23
【相似文献】
相关期刊论文 前10条
1 王旭;肖伟华;朱维耀;史璇;;洞庭湖水位变化对水质影响分析[J];南水北调与水利科技;2012年05期
2 秦玉玲;;典型曲线法解决测压水位变化滞后引起的观测误差问题[J];内蒙古科技与经济;2010年02期
3 张均锋,孟祥跃,朱而千;水位变化引起分层边坡滑坡的实验研究[J];岩石力学与工程学报;2004年16期
4 黄运才;日平均水位，
本文编号：2272126
本文链接：https://www.wllwen.com/kejilunwen/shuiwenshuili/2272126.html
