【摘要】 为了有效地开发和利用长江,造福于人类,正确地了解和揭示长江地质的各种客观规律,不仅具有科研价值,而且具有实践意义。研究长江三峡(确切地讲应为宜昌峡)江底深槽的成因,是揭示其实质的一种科学尝试。笔者在研究前人资料的基础上,提出了南津关江底某些深槽成因的一种新观点,即深槽为地下暗河的出口。据此,笔者推测在长江之下,还存在一个独立的地下水系区段。这也许就是研究长江三峡深槽成因的理论和实践价值之所在。更多还原

【Abstract】 It is of significance in not only scientific study but also practice to understand and reveal correctly the various objective laws of the Yangtse River so as to develop and utilize it effectively and to bring benefit to mankind. To study the origin of the deep trough at river bottom of the Yangtse Gorges (precisely, the Yichang Gorge) is a scientific attempt to reveal the crux of the research subject. The writer has put forward a new idea after reading the predecessors’ materials that the deep trough is an outlet of a subterranian river. Based on this, the writer infers that there is an independent groundwater system under the Yangtse River. This may be the point of theoretical and practical significance in the study of the deep trough of the Yangtse River.更多还原