（本文利用回声测深仪GPS全球定位系统在俄罗斯的勒拿河、北德维纳河下游主航道进行床面形态观测的结果，结合俄罗斯学者在其他河流进行同样观测的资料，讨论了冲积河流的床面开态特征，分析了沙波形态结构，建立了沙波形态要素与河流级别之间的相关关系，给出了利用河流级别计算推移质输沙率的经验公式。并经实测资料验证，结果表明，该公式具有较好的精度。）

Study of the major Asian rivers discharge to the ocean revelas variations of their water discharges and sediment loads, and local characteristics of river sediment concentrations. On the basis of this, the Asian revers fall into three regions, including Eurasia Arctic, East Asia, Southeast and South Asia Regions. The Eurasia Arctic Region is characterized by the lowest sediment concentration and load, while the East Asia Region is of the highest sediment concentration and higher sediment load, and the South-East and South Asia Region yields higher sediment concentration and highest sediment load. The sediment loads of these regions are mainly controlled by climate, geomorphology and tectonic activity. The Eurasia Arctic rivers with large basin areas and water discharge, drain low lelief which consists of tundra sediment, thus causing the lowest sediment load. The East Asia rivers with small basin areas and lowest water discharges, drain extensive loess plateau, and transport most erodible loess material, which results in highest sediment concentration. The SE and South Asia rivers originating from the Tibet Plateau have large basin areas and the largest water discharges because of the Summer Monsoon and high rainfall influence, causing the highest sediment load. In Asia, tectonic mothon of the Tibet Plateau plays an important role. Those large rivers originating from the Tibet Plateau transport about 50% of the world river sediment load to ocean annually, forming large estuaries and deltas, and consequently exerting a great influence on sedimentation in the coastal zone and shelves.

黄河三角洲在整体淤进的同时伴随着蚀退。近年来黄河来水来沙呈递减趋势，现行河流路海岸线淤进减缓，原行河流路海岸线出现了严重的蚀退。三角洲造陆的趋势及速度制约着三角洲经济的持续发展和生态环境的演变。本文以近20年来黄河水文、泥沙、三角洲滨海区水深等的实测资料及卫星遥感照片为依据，研究了黄河三角洲面积变化的趋势以及与流域来水来沙的关系，得出三角洲整体趋于冲淤平衡的年来沙量临界值为2.45亿t。

运用随机水文学的方法分析了近五十年来黄河河口入海径流量和办理沙量的变化规律；运用卫星遥感资料分析揭示黄河三角洲淤进蚀退的规律和三角洲冲淤平衡的条件；提出了建设清水沟和钓口河两条流路轮换使用工程的新思路。

在采集和分析地铁震害类型的基础上，考虑了地震荷栽作用下区问隧道的受力特点及及软土和结构材料的动力特性，对软土地层中的地铁区间隧道的抗震设计方法进行了研究。内容包括：地铁区间隧道断面的地震响应计算，等代地震荷载的确定原则，以及在2%、10%和63.2%三种概率水准，上海市区典型区间隧道断面的等代地震荷载及其修正系数的确定等。有关成果对地铁区间隧遭简化抗震设计方法的建立有参考价值。