doi:

DOI: 10.3724/SP.J.1201.2011.01012

South-to-North Water Diversion and Water Science & Technology (南水北调与水利科技) 2011/9:1 PP.12-17

Excavation Classification of Neogene Hard Soil-soft Rock at Anyang Section in the Middle Route of South-to-North Water Diversion Project


Abstract:
The canal of Anyang Section in the Middle Route of South-to-North Water Diversion Project needs to excavate a lot of rock and soil.There are lots of Neogene hard soil-soft rocks such as marlite,conglomerate,sandstone etc.It is very different to the preliminary perception and there are quite different understanding of boundary lines between rock and soil.The geotechnical properties were got by field investigation,point load test,drilling test and indoor mechanical and chemical,acoustic tests.The rock and soil excavation classification was made based on rock quality and soft rock-hard soil classifications.Uniaxial compressive strength,longitudinal wave velocity,the net drilling rate and natural bulk density were taken as the indicators and the excavation classification system was composed of 9 classes and 16 sub-classes.The result showed that it gave a good assessment of the different characteristics of rock excavation and gave a reasonable solution to the project cost.The classification system may give a good reference for other similar projects involving Neogene hard soil-soft rocks.

Key words:South-to-North Water Diversion Project,Middle Route,hard soil-soft rock,excavation classification

ReleaseDate:2014-07-21 15:58:49



[1] 河南省水利勘测总队.南水北调中线一期工程总干渠安阳渠段招标设计阶段工程地质勘察报告[R].2006.(Henan Water Survey Corps.The Engineering Geological Investigation Report of Anyang Section During Tender and Design Stage[R].2006.(in Chinese))

[2] 河南省水利基本建设工程质量检测中心站,南水北调安阳段工程实验室.岩石抗压强度检验报告[R].2007-2009.(Henan Engineering Quality Inspection Center of Water Construction,Engineering test laboratory of Anyang Section. The Inspection Report of Rock Compressive Strength[R].2007-2009.(in Chinese))

[3] 中国水利水电科学研究院,水利水电规划设计总院,水利电力情报研究所,等.岩石力学参数手册[K].北京:水利电力出版社,1991.(China Institute of Water Resources and Hydropower Research,Water Resources and Hydropower Planning and Design Research,Hydraulic Power Intelligence Research Institute,et al.Manual of Rock Mechanical Parameters[K].Beijing:China Water Power Press,1991.(in Chinese))

[4] GB 50218-1994,工程岩体分级标准[S].(GB 50218-1994,Standard for Engineering Classification of Rock Masses[S].(in Chinese))

[5] SL 264-2001,水利水电工程岩石试验规程[S].(SL 264-2001,Specification for Rock Tests in Water Conservancy and Hydroelectric Engineering[S].(in Chinese))

[6] SL 303-2004,水利水电工程施工组织设计规范[S].(SL 303-2004,Specification for Construction Planning of Water Resources and Hydropower Engineering[S].(in Chinese))

[7] Bienawski T.Felsklassifikation:Stand Der Technick and Moglichkeiten Der Normung[A].In:Anon.Forschungsberichte Des Transportwesens[C].1981:2-9.

[8] N.Sabatakakis, G.Koukis, G.Tsiambaos, S.Papanakli.Index Properties and Strength Variation Controlled by Microstructure for Sedimentary Rocks[J].Engineering Geology,2008,97(3):80-90.

[9] 张永双,曲永新.硬土-软岩的厘定及其判别分类[J].地质科技情报,2000,19(1):77-80.(ZHANG Yong-shuang,QU Yong-xin.Definition of Hard Soil-soft Rock and its Discrimination and Classification[J].Geological Science and Technology Information,2000,19(1):77-80.(in Chinese))

[10] Morgenstern N R,Eigenbrod K D.Classification of Argillaceous Soils and Rocks[J].ASCE,GT100,1974,1137-1156.

[11] Terzaghi K,Peck R B.Soil Mechanics in Engineering Practice[J].New York:Wiley,1967.

[12] Anon.Working Party Report on the Description of Rock Masses for Engineering Purpose[J].Q.J.Eng.Geol.,1977,10:355-388.

[13] Oteo C S.Urban Tunnels in Hard Soils[J].Geotechnical Engineering of Hard Soils/Soft Rocks,1993,3:2063-2098.

[14] E Marha das Neves.Fills and Embankments[J].Geotechnical Engineering of Hard Soils/Soft Rocks,1993,3:2023-2038.

PDF