標題: Characterization of reservoir sediment under water with differential pressure-sensored flat dilatometer and piezo-penetrometer
作者: Lee, Jui-Ting
Wang, Chien-Chih
Ho, Yen-Te
Huang, An-Bin
土木工程學系
Department of Civil Engineering
關鍵字: Differential pressure;DMT;Mud;Piezometer;Reservoir;Sediment
公開日期: 1-八月-2013
摘要: The unusually strong typhoons and heavy rainfalls occurred recently in Taiwan have caused major landslides in many reservoir catch basins. The debris from these landslides eventually settled in the reservoir and turned into mud. From soil mechanics point of view, the mud immediately in front of the dam where the reservoir is usually the deepest is a very young, normally consolidated or under-consolidated fine-grained soil. The engineering properties of the reservoir mud are important parameters in the planning and design of schemes to remove the mud. Yet, our knowledge in this regard is very limited. For some of the major reservoirs in Taiwan, the mud is often under more than 40 m of water. How to conduct effective geotechnical site characterization under these circumstances is a challenge. The authors developed techniques to incorporate differential pressure measurements in flat dilatometer (Delta DMT) and piezo-penetrometer (Delta Pu) tests to facilitate in situ measurements under water in a reservoir. A series of field Delta DMT and Delta Pu tests along with representative soil sampling were conducted at Tsengwen Reservoir in southern Taiwan. The paper describes the techniques of Delta DMT and Delta Pu tests, interpretation of available test data to obtain the engineering properties of the reservoir mud, and discusses implications in the future site characterization of reservoir mud.
URI: http://dx.doi.org/10.1007/s11440-012-0188-1
http://hdl.handle.net/11536/22166
ISSN: 1861-1125
DOI: 10.1007/s11440-012-0188-1
期刊: ACTA GEOTECHNICA
Volume: 8
Issue: 4
起始頁: 373
結束頁: 380
顯示於類別:期刊論文


文件中的檔案:

  1. 000320948300002.pdf