紫色泥页岩的风化侵蚀与工程建设增沙
文献类型：期刊论文
| 作者 | 朱波 ; 高美荣; 刘刚才
|
| 刊名 | 山地学报
 |
| 出版日期 | 2001 |
| 卷号 | 19期号:S1页码:50-53 |
| ISSN号 | 1008-2786 |
| 关键词 | 紫色页岩 土壤形成 风化侵蚀 工程增沙 西部开发 |
| 其他题名 | Weathering Erosion and Sediment Yield from Construction in Purplish Shale Area |
| 通讯作者 | 朱波 |
| 合作状况 | 其它 |
| 中文摘要 | 通过田间试验与野外观测研究紫色泥页岩的风化速度与侵蚀特征,结果表明,紫色泥页岩年风化成土速率为15 800 t·km- 2 - 25500 t·km- 2 ,各种紫色岩的风化顺序为遂宁组(J3 s) > 蓬莱镇组(J3 p) > 沙溪庙组(J2 s) > 城墙岩群 ( K1 c) ;风化侵蚀强烈是紫色泥页岩的独有特征,侵蚀模数为12 380 t·km- 2 ·a - 1 - 23640 t·km- 2 ·a - 1 ,风化与侵蚀的交替过程是紫色土水力侵蚀的基本过程。工程建设开挖山体,暴露母岩是引发紫色泥页岩风化侵蚀的首要外力,工程建设造成四川盆地的裸露紫色页岩面积高达1 200 km2 ,导致紫色岩地区每年工程增沙量高达2 500 万t 。嘉陵江北碚水文站多年泥沙分析结果表明,1960 年代的“三线”建设曾引起嘉陵江流域泥沙的急剧上升。西部大开发中基础设施建设在改善“蜀道难”的同时,势必开山填沟,导致大量的岩石及土石方裸露、巨大的紫色页岩剖面裸露,预计西部大开发尤其是基础设施建设将会造成更大更广泛的工程增沙。工程建设增沙将对四川省的生态环境建设及长江流域经济可持续发展构成极大的挑战,控制工程增沙将成为改善长江上游生态环境的重要方向。当前,工程建设增沙的预测及工程建设项目的环境影响评估已成当务之急。 |
| 英文摘要 | Fields observation and experiments were conducted to study soil formation and erosion characteristics of purplish shale. Results showed, soil formation rates of purplish shale are 15 800 ～ 25 500 t km2 ·a-1 .Weathering sequence of purplish shale is Group Suining (J3s)>Group Penglaizhen(J3p)> Group Saximiao (J2s)>Group Chengqiangyan(K1c).Weathering erosion is unique feature of purplish shale with erosion modulus as high as 14 380 ～23 952 t.km-2·a-1. Trees are cut down, earth and stones are excavated in construction , consequently cause purplish shale bared and resulted in serious weathering erosion .This leads to produce about 25,000,000 tons of sediment yield annually in purplish shale area of upper reaches of Yangtze River. Sediment yield data observed in Beibei station of Jialing River were analyzed. Evidence showed ”Three Line” construction in 1960s caused sharp increment of sediment in Jialing River. Traffic problems will be improved by basic construction in the ”Western Development”, however, huge stone and profile of purplish shale will be exposed to accelerate weathering rate of purplish shale. Thus more extensive weathering erosion will occur in large scale. And higher sediment yield from construction wouldmake big trouble to eco-environment Therefore it is urgent to take conservation measures to control soil erosion and sediment yield from construction so as to improve ecological environment of upper reaches of Yangtze River. |
| 学科主题 | S157 |
| 收录类别 | 北大中文核心 |
| 语种 | 中文 |
| 公开日期 | 2010-07-08 |
| 源URL | [http://ir.imde.ac.cn/handle/131551/475]  |
| 专题 | 成都山地灾害与环境研究所_成都山地所知识仓储（2009年以前） 成都山地灾害与环境研究所_山地灾害与地表过程重点实验室 成都山地灾害与环境研究所_山地表生过程与生态调控重点实验室 |
| 作者单位 | 中国科学院成都山地灾害与环境研究所 |
| 推荐引用方式 GB/T 7714 | 朱波,高美荣,刘刚才. 紫色泥页岩的风化侵蚀与工程建设增沙[J]. 山地学报,2001,19(S1):50-53. |
| APA | 朱波,高美荣,&刘刚才.(2001).紫色泥页岩的风化侵蚀与工程建设增沙.山地学报,19(S1),50-53. |
| MLA | 朱波,et al."紫色泥页岩的风化侵蚀与工程建设增沙".山地学报 19.S1(2001):50-53. |
入库方式： OAI收割
来源：成都山地灾害与环境研究所
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