| 试论地质学在防洪减灾中的作用和意义——兼论长江防洪策略 |
| |
| 引用本文： | 李长安,郭广猛.试论地质学在防洪减灾中的作用和意义——兼论长江防洪策略[J].地球科学进展,2001,16(1):45-54. |
| |
| 作者姓名： | 李长安 郭广猛 |
| |
| 作者单位： | 中国地质大学,湖北,武汉,430074 |
| |
| 基金项目： | 中国地质调查局项目!“长江中游地质灾害调查”(Z3.1.1)资助 |
| |
| 摘 要： | 流域洪灾的形成直接受到地质、地貌条件的制约。洪灾是由洪水引发的，但洪水并不等于洪灾，由暴雨发展为洪水、洪灾是一种外动力地质作用过程。暴雨是一种气象现象，洪水是一种水文现象，而暴雨→洪水→洪灾，则是一种地质过程。因此，地质学在防洪、减灾中具有重要意义。根据地质学原理，长江防洪策略为：①沿江干堤不宜继续加高；②干堤加固应因地（地质、地貌条件）制宜，要考虑到三峡工程可能引起的河流地质作用变化；③启用古河道分流泄洪；④“退田还湖”与“挖泥还湖”相结合；⑤“平垸行洪”与“民垸蓄洪”结合；⑥实施有计划地开提放淤工程，防洪与除渍结合；⑦区段综合治理与全流域系统治理结合。
|
| 关 键 词： | 防洪 减灾 长江 地质学 暴雨 外动力地质作用 |
| 文章编号： | 1001-8166(2001)01-0045-04 |
THE FUNCTION AND SIGNIFICANCE OF GEOLOGY ON THE PREVENTING FLOOD AND REDUCING DISASTER --THE PREVENTING FLOOD STRATEGY IN YANGTZE RIVER |
| |
| LI Chang an,GUO Guang meng.THE FUNCTION AND SIGNIFICANCE OF GEOLOGY ON THE PREVENTING FLOOD AND REDUCING DISASTER --THE PREVENTING FLOOD STRATEGY IN YANGTZE RIVER[J].Advance in Earth Sciences,2001,16(1):45-54. |
| |
| Authors: | LI Chang an GUO Guang meng |
| |
| Institution: | Institute of Geographical Science and Natural Resources，CAS，Beijing 100101 China |
| |
| Abstract: | The formation of flood disaster is restricted directly by the conditions of geology and geomorphology.Flood disaster is caused by floodwater,hut floodwater is not equal to flood disaster.The form of flood disaster is an outer dynamic geological process.Rainstorm is a meteorological phenomenon,flood is hydrological phenomenon,while the development from rainstorm to flood water to flood disaster is a geological process.So geology has important usefulness in the preventing and reducing flood.According to the principle of geology.the strategy of the preventing Yangtze River flood is:(1)the main bank along the river should not be heightened continuously:(2)the condition of geology and geomorphology and the fluvial geological effect caused by Three Gorge Project should he considered when the main bank is reinforced;(3)the old river ways should be used to discharge the flood;(4)combining “returning farmland to lake” with digging silt away in lakes;(5)discharge flood with polder an store flood in polder;(6)open bank and discharge the silt designedly;(7)combining the regional synthesis harnessing with all drainage area synthesis harnessing. |
| |
| Keywords: | Prevention of flood Reduction of disaster Yangtze River Geology |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
| 点击此处可从《地球科学进展》浏览原始摘要信息 |
| 点击此处可从《地球科学进展》下载免费的PDF全文 |
