摘要
水体深度变化是沉积体发育的重要影响因素,对于水体深度变化的定量恢复具有重要的意义。利用控制变量法通过除水体深度以外的一切因素保持不变的水槽模拟实验,观察记录模拟扇三角洲向湖方向最大发育位置随湖平面下降的变化,最终得到扇三角洲向湖方向最大前积距离和湖平面下降深度之间的定量关系,通过数据整理分析,建立两者和底形坡度间的几何数学关系,作为湖平面下降的定量恢复的计算公式。为了验证实验的有效性,在增加重复试验的基础上,又进行了两个系列的重复对照试验,以排除人为划定最大位置和物源供应速率改变的影响。
Water depth change is the important influencing factors of sedimentary body development and the quantitative recovery of water depth change has important significance. Using the method of control variables through flume simulation experiment to keep all factors except water depth remain the same, the furthest lakeward develop- ment position of fan delta were observed and recorded with lake level down, finally, the quantitative relationship be- tween the maximum move distance of front delta and the change of the lake depth is obtained. Based on the data analysis, the geometric mathematical relationship between the two above and the bottom slope is established, which is the calculation formula for quantitative recovery of lake level decline. In order to verify the effectiveness of the experi- ment, except the increase of repeated experiment, two series of repeated controlled experiment were carried out to eliminate the influence of the change of the maximum position and the supply rate of the material.
作者
焦朝维
张元福
王倩茹
关超
JIAO Chao-wei ZHANG Yuan-fu WANG Qian-ru GUAN Chao(China University of Geosciences （Beijing）, Beijing 100083, P.R. China)
出处
《科学技术与工程》
北大核心
2016年第34期22-27,共6页
Science Technology and Engineering
基金
国家重大科技专项(2011ZX05009-002)资助
关键词
扇三角洲
水槽模拟实验
控制变量法
fan delta flume simulation experiment control variate method
