和田河肖塔站水沙特性及水位流量关系的初步研究

Studies on Properties of Sediment and the Relation Between water-level and Flow of Xiata Hydrologic Station of the Hetian River

和田河属冲积性多泥沙游荡型河流，汛期洪峰与沙峰的暴涨猛落和单一的河床边界组成条件，造成河道水位同流量关系的复杂性和不定性。本文通过对肖塔站三十三年水文系列资料统计分析表明，在时空变化上，和田河河床冲淤变形呈缓慢堆积抬升之势。在论述水位流量关系上，引用相关分析法，根据同流量不同水位出现的不同机率，确定三组相关线，从而较好地阐述了水位同流量的数值对应关系，对今后研究水文数值预报和制定防洪风险留具有一定可借鉴性。

The Hetian river is alluvial, sediment - laden, fluctant. The complexity and unsteadiness in relation to water - level and discharge of the river result from the sudden and sharp rise or fall of flood and sediment peak in high - water season, and from the single wa tercourse. Statistical analyses on the 33 - year hydrologlc data of Xiaota Hydrologlc Station indicate the riverbed of the Hetian river tends to deform and rise gradually and slowly by tor rents and sediment accumulation with the passage of time. By applying relative analysis approach, the paper discusses the relationship between the water- level and rate f flow ,and determines three relative curves accorded with different occurances of the same water- level.It also expounds the corresponding numerical values between water- level and discharge of the river, and thus provides a good reference to hydrologic numerical prediction study and to working out a flood control situation chart in the future.