Effect of sand mining project on the river channel;
采砂工程对河道影响分析研究
In order to meet the requirement of Pudong International Air-port construction,and in the view of benefit to river regime and navigation,the sand mining area is selected in south side of Jiangya shoal and the outside of Jiuduansha protection area in the south channel and the sand mining scheme was determined.
为满足浦东国际机场工程建设需要,从有利于河势和航运等角度出发,选择了长江口南槽江亚南沙南侧、九段沙保护区外侧的砂源区作为工程采砂区,并拟定采砂方案。
Investigation of illegal sand excavation in Yishusi River Basin and countermeasures;
关于沂沭泗流域非法采砂情况的调查及对策
Guideline and main contents of sand excavation planning of river courses lower Yibin in up- per reaches of the Yangtze River;
长江上游宜宾以下河道采砂规划原则及主要内容
Bidding practices for sand excavation operation right in the boundaries of Hubei and Jiangxi province;
鄂赣边界河段采砂经营权招标工作实践与探索
Affection and countermeasures on river bed of Jiaojiang River Estuary reach for large scaled exploiting sand;
大规模采砂对椒江河口段河床的影响及对策
The present situations and countermeasures of the management of exploiting sand in Changjiang River;
长江河道采砂管理现状与对策
An excavation scheme on Lijia sediment bar of Jialing river was put forward based on site investigation,and a two-dimensional horizontal numerical model in orthogonal body-fitted coordinate for flow was established to study the variation of flow condition at Lijia reach caused by excavation.
实地勘测嘉陵江礼嘉河段基础上提出采砂方案,采用贴体正交坐标系下的平面二维水流数学模型研究嘉陵江礼嘉边滩采砂后河道水流条件的变化。
Based on the analysis of basic characteristics of Jinghong Reach in the Lancang River, variations of the navigable conditions caused by excavation in Jinghong Reach are investigated by 2-D mathematical model.
在分析景洪水道基本特征的基础上,结合定床模型试验提出的采砂方案,采用平面二维水流数学模型进行了水面线和流场分析计算,研究景洪水道采砂后通航条件的变化,结果表明采砂方案实施后该河段通航条件能基本满足通航要求。
Study on the situation of sand-gravel extraction in the river channel;
采砂对河道的影响分析及治理措施研究
Studied is the present situation of sand-gravel extraction in the channel of the Yangtze River, with the focus placed on the harm to riverbed stability,shipping and transportation.
对长江中下游河道采砂的现状进行了分析 ,重点分析了河道无序采砂对长江中下游的河床稳定和航运交通所造成的危害 ,认为在一段时间内全面禁止在长江中下游河道非法采砂是完全正确的 。
Application of small-sized dredge to the stoping of old tailing of Laozuoshan Gold Mine;
小型采砂船在老柞山金矿老尾矿回采生产中的应用
The hydraulic system is a guarantee for the various functions of a dredge.
采砂船液压系统是采砂船各项功能顺利实现的保证。
About the illegal sand mining at the Zhenjiang section of the Yangtze River;
长江镇江段非法采砂问题的思考