贵州桐梓新桥浑水河的成因再探讨

通过对新桥浑水河上游明流段、中部伏流段、下游浑水河段实地调查,并结合该区1:20万区域地质资料、区域水文地质资料及煤矿勘查资料,在分析浑水河区域构造背景及水文地质特征的基础上,研究了浑水河的水动力条件,包括纵向水动力条件和横向水动力条件,认为浑水河是特殊构造通道、水土流失带来的粘土颗粒物源、携带粘土颗粒的水体进入地下伏流,粘土颗粒在河床中沉积后又被流水带出的一个过程,即"流失→带进→沉积→带出"过程。浑水河的成因:1浑水河的特殊构造,具备了通道条件;2上游水土流失带来的大量细小粘土颗粒提供了物源;3洞湾水体"盲谷"是浑水的物源载体;4地下伏流的水动力条件,包括纵向水动力条件和横向水动力条件,四者共同作用的结果。

RE-DISCUSSION ON THE HUNSHUI RIVER FORMATION CAUSE OF XINQIAO VILLAGE,TONGZI COUNTY,GUIZHOU PROVINCE

The paper introduces the Hunshui river formation cause by surveying the upstream free flow section, central subterranean stream section and downstream section combined with the 1:200000 regional geological, hydrogeological and coal mine exploration information. They also research on the lengthways and lateral hydrodynamic condition of the Hunshui river. All the above shows that the formation of Hunshui river is a process of entrance for special gallery, clay PM and the wave with PM as well as carry out for PM deposit. They are as a process of run off-bring into-deposition-carry out. Some conditions promote the Hunshui river formation, they are their special construction and the matter source from a large number of wee clay particle caused by upstream water and soil loss as well as the blind valley for carrying matter source and also the lengthways and lateral hydrodynamic condition of underground river.