{"id":"02806af4-a162-4833-83c7-d3ecf8460e8b","title":"基于室内模型试验的沟道物源侵蚀起动的试验数据及图像资料","title_en":"Test data and image data of channel source erosion initiation based on indoor model test","serial":"","user_limit":"为尊重知识产权、保障数据作者的权益、扩展数据中心的服务、评估数据的应用潜力，请数据使用者在使用数据所产生的研究成果中（包括公开发表的论文、论著、数据产品和未公开发表的研究报告、数据产品等成果），明确注明数据来源和数据作者。对于转载（二次或多次发布）的数据，作者还须注明原始数据来源。","instructions":"文件的名称为“数据文件Excel 、test2020.xlsx”\n数据读取方式：可采用Microsoft office或WPS读取及编辑","description":"针对“宽缓”、“窄陡”型泥石流沟道物源，以现场调查及室内岩土体力学参数试验为基础，利用室内模型实验，研究在不同影响因素下，沟道松散物质起动的机制。通过数据分析，拟合建立沟道物源动储量模型，为震区类似泥石流沟预测预警和治理工程设计提供参考和科学依据。主要结论如下：\n（1）不同结构类型堆积体的起动侵蚀起动过程各不相同：细粒土在后方径流开始后在前缘出现细沟，逐渐发展为拉槽，贯穿至后缘；粗粒土径流开始后前缘坍滑，呈溯源侵蚀的特点；上细下粗土率先在土层分界处形成凹槽，并逐渐向后缘延伸；上粗下细土于前缘部分先形成细沟，其后面层的粗粒土滑动，铲刮前缘细粒土。\n（2）泥石流起动瞬间，粗颗粒主要以滑动、跳跃、滚动三种形式起动，细粒土中粗颗粒的起动运移形式以滚动和跳跃为主；粗粒土中粗颗粒以滑动起动为主；上细下粗土前期汇流粗颗粒起动以滚动及跳跃为主，后期为滑动为主；上粗下细土中粗颗粒起动以滑动为主。\n（3）雨强越大，径流量越大，下切侵蚀越强烈。侵蚀曲线有先增加后减小的趋势，最大侵蚀深度一般出现坡体陡缓变化处。\n（4）利用室内模拟试验结果，结合分维理论，建立了“宽缓”型沟道物源动储量评价模型并进行了验证。","doi":"10.11888/SolidEar.tpdc.272128","projection":"","language":"zh","share_type":"online","east":104.7,"west":104.68,"south":31.53,"north":31.54,"scale":null,"crs":null,"filesize":10.0,"share_policy":"a","ts_created":"2022-03-11T12:26:33.940858+08:00","doi_type":"拥有自主知识产权","ts_updated":"2022-03-15T11:08:51.954228+08:00","time_description":"","datas_group":3,"time_description_en":"","data_format":null,"project":[11],"specials":[],"cite":null,"review_status":5,"review_invite":[{"user_name":"刘晶晶","username":"刘晶晶","email":"liujingjing@imde.ac.cn","is_cancel_expert":false}],"review_editor":{"id":42421,"last_login":"2022-04-08T15:16:51.670544+08:00","username":"任慧霞","email":"510727846@qq.com","is_active":true,"is_staff":true,"user_name":"任慧霞"},"data_sources":null,"temporal_resolution":"Monthly","spatial_resolution":"1m - 10m","license":"Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)","fund":[811],"subtopics":{"metadata":"02806af4-a162-4833-83c7-d3ecf8460e8b","three_pole":null,"third_pole":null},"username":"刘波","review_time":null,"protected_duration":null,"protected_describe":null,"is_important":false,"hit_count":26}