项目来源

国家重点研发计划(NKRD)

项目主持人

王小毛

项目受资助机构

长江勘测规划设计研究有限责任公司

立项年度

2017

立项时间

未公开

项目编号

2017YFC1501203

项目级别

国家级

研究期限

未知 / 未知

受资助金额

429.00万元

学科

重大自然灾害监测预警与防范

学科代码

未公开

基金类别

“重大自然灾害监测预警与防范”重点专项

关键词

膨胀土 ; 时移推移检测 ; 电法勘探 ; 地震勘探 ; 渗透滑动灾变评估方法 ; xpansive soil ; time lapse detection ; electrical prospecting ; seismic observation ; disaster assessment method for water infiltration sliding

参与者

张智;徐涛;林永燊

参与机构

未公开

项目标书摘要：本课题研究工作严格按照课题实施方案稳步推进，基本完成了任务书要求的中期研究任务。按照课题研究要求，完成膨胀土岸坡和堤坝渗透滑动检测识别与评估研究工作进展包括：完成了岸坡和堤坝时移电法和时移地震观测系统设计并提交技术发明专利申请，其中“堤坝电阻率层析成像观测系统”已获国家发明专利授权；完成了时移电法和时移地震数据反演方法研究，提出了时移电法数据混合正则化约束反演方法，还提出了时变-速度相关时移地震数据分析方法；开展了岸坡和堤坝隐患地球物理电性及弹性响应特征模型正演模拟，确立了水体渗透过程引起岸坡和堤坝地球物理电性和弹性参数变化特征，为时移检测方法研究提供了理论指导；选取在丹江口水库宋岗码头开展了膨胀土地区岸坡现场时移电法和时移地震检测野外试验研究，验证了时移检测观测系统、二次时移观测数据的采集以及时移数据反演方法，基本完成了对岸坡时移电法和时移地震检测有效性、观测装置类型、极距、测道数等观测系统参数与现场检测方法研究；初步完成岸坡和堤坝时移电法检测技术装备系统设计方案及关键功能模块的开发，提出了一套完整的时移电法检测装备系统设计方案，并已完成主机选型与模块定制；联合膨胀土岸坡全生命期行为评定指标与动力学分析系统的非线性动力学判据，建立其基于时移检测的渗透滑动灾变临界判据，初步形成了岸坡和堤坝渗透滑动灾变评估方法。

Application Abstract: The research work of this subject is advancing steadily in strict accordance with the project implementation plan, and the interim research task required by the assignment book has been basically completed. According to the research requirements, the research progress of detection identification and safety assessment of water infiltration sliding occurs in xpansive soil embankment and bank slope includes：Completed the design of time-lapse electrical prospecting and time-lapse seismic observation system for embankment and bank slope，and submitted the application for technical invention patent，“The resistivity computerized tomography system of bank slope”has been authorized by the national invention patent. The inversion research of time-lapse electrical prospecting and time-lapse seismic observation data is preliminarily finished. A hybrid regularized constrained inversion method for time-lapse electrical prospecting data is proposed, and the analysis method of time-lapse velocity correlation time-shifting seismic data is also proposed. To carry out the the forward modeling of geophysical electrical and elastic response characteristics of bank slope and dyke hazards is carried out, and set up the characteristics of geophysical electrical and elastic parameters of bank slope and dyke caused by water permeation process, provide theoretical guidance of the study of time lapse detection. Field experiments of time-shift electric method and time-shift seismic detection in expansive soil area were carried out at Songgang Wharf of Danjiangkou Reservoir, and the time-lapse detection and observation system, collection of secondary time-shift observation data and time-shift data inversion method were verified. The system design scheme and key functional modules of time-lapse electrical prospecting technology and equipment have been preliminarily completed, and a complete system design scheme of time-lapse electric method detection equipment has been proposed, and the host selection and module customization have been completed.Combined with the nonlinear dynamic criterion of the whole life period behavior evaluation index and dynamic analysis system of expansive soil bank slope, the critical criterion of seepage slip disaster based on time shift detection is established, and the disaster assessment method of seepage slip of embankment and bank slope and dam is preliminarily formed.

项目受资助省

湖北省