Dataset of the 1:50 000 Pingluo Station Map Sheet Area in the Yinchuan Basin in 2017 - Obtained from Geological Engineering Drilling, Borehole Sampling and Geotechnical Tests
-
摘要:
本数据集是作者2017年在银川盆地平罗站幅施工的14个工程地质钻孔岩心中采集的234个岩土样品，经过测试分析后所得的共2 602组测试数据。这些数据主要体现了土体的抗剪强度、压缩模量、颗粒成分等。图幅内第四系分布广泛，厚度大，为区内主要的工程地质岩组，且成因多样，从西到东主要包括：上更新统洪积层，岩性主要为砾石、砂砾石；全新统灵武组细砂土；全新统湖沼积层，岩性主要为淤泥、砂质粘土及粉砂；全新统风积层，岩性主要为土黄色中-细砂、粉砂。其中，全新统灵武组占据了图幅大部分区域，岩性主要为细砂、粉砂、砂质粘土等。钻孔揭示，银川平原区地层纵向上以河湖相细砂、粉砂为主，夹粉质粘土，局部钻孔含卵砾石层。样品测试数据分析显示，图幅区内碎石土、冲积砂土、粘性土具较高的抗剪强度，工程地质条件较好；而图幅西北部砂岩、泥岩由于中等到强风化程度，且有软弱夹层，工程地质条件较差。湖沼积成因的淤泥、砂质粘土及粉砂工程地质性质亦较差。本次图幅区内的工程地质钻探工作施工规范，测试分析均由具备国家资质的实验室承担，得到的数据质量可靠，真实反映了该区域内地层信息及岩土物理力学性质。
-
关键词:
- 银川盆地 /
- 工程地质钻孔 /
- 土工试验 /
- 平罗站幅 /
- 1:50 000数据集
Abstract:This dataset contains 2 602 sets of test data on 234 rock and soil samples collected from the cores of 14 geological engineering boreholes that were drilled in the Pingluo Station map sheet area of Yinchuan Basin (also referred to as "the Area") in 2017. It primarily consists of information about the shear strength, compression modulus and grain composition of soil masses. In the Area, the geological structures of the Quaternary, which is formed by many causes and has a great thickness, compose the main geological engineering formation, since it is widely distributed. From west to east they include:diluvium of the Upper Pleistocene Series, in which gravels and sandy gravels are mainly distributed; fine sandy soil of the Lingwu Formation, Holocene Series; lacustrine sediment of the Holocene Series, throughout which sludge, sandy clay and silty sand are mainly distributed; aeolian deposits of the Holocene Series, in which khaki medium-fine sand and silty sand are mainly distributed. Among these geological structures, the Lingwu Formation of the Holocene Series covers most of the Area and mostly contains fine sand, silty sand and sandy clay. As revealed by the boreholes, vertically, the strata of the plain area of the Yinchuan Basin mainly consist of fine sand and silty sand of fluviatile-lacustrine facies that are interspersed with silty clay, whilst gravel-cobble layers are found in some boreholes. According to analysis of sample testing data, the gravel soil, alluvial sandy soil and cohesive soil in the Area are subject to good geological engineering conditions due to their high shear strength, while the sandstones and mudstones in the northwest suffer from poor geological engineering conditions since they are moderately or strongly weathered and interspersed with weak intercalations. In addition, the sludge, sandy clay and silty sand of lacustrine sedimentary origin also suffer from poor geological engineering conditions. The data obtained for the dataset are credible and can accurately reflect the strata information as well as the physical and mechanical properties of the rock and soil masses in the Area since the geological engineering drilling was conducted in a standardized manner and the tests and analysis were all performed by nationally-certified laboratories.
-
-
表 1 数据库（集）元数据简表
条目 描述 数据库（集）名称 2017年银川盆地1∶50 000平罗站幅工程地质钻孔及取样土工试验数据集 数据库（集）作者 孙巧银，中国地质调查局西安地质调查中心
李成柱，中国地质调查局西安地质调查中心
方 磊，宁夏回族自治区水文环境地质勘察院数据时间范围 2017年 地理区域 银川盆地1∶50 000平罗站幅（J48E007018） 数据格式 *.xls 数据量 244KB 数据服务系统网址 http://dcc.cgs.gov.cn 基金项目 中国地质调查局地质调查项目“宁夏沿黄经济区综合地质调查”（DD20160263） 语种 中文 数据库（集）组成 本数据集共包含14个工程钻孔信息，其中扰动样品151个，原状样品83个，测试数据2 602组。包含如下测试指标：工程地质钻孔地层岩性信息、采样日期、钻探孔地理位置、孔口标高、采样层位、岩土类型、颗粒分析、液塑限、抗剪、压缩系数、压缩模量、含水量。 
下载: 导出CSV
表 2 图幅内岩土体类型及工程地质条件汇总表
岩土体类型 工程地质条件 岩体 砂岩、泥岩、砂质泥岩岩组 较差 土体 洪积碎石土 较好 冲积砂土 较好 风积砂土 较差 湖沼积粘性土 较差
下载: 导出CSV
表 3 银川盆地1∶50 000平罗站幅土工试验测试数据统计表
序号 样品类型 主要测试内容 测试数据量（组） 单位 备注 1 原状样 含水量 Wo (%) 83 组 其中粉质粘土样59个，粉土24个。 2 天然密度ρo (g/cm3) 83 组 3 干密度 ρd (g/cm3) 83 组 4 土粒比重Gs 83 组 5 液限WL (%) 82 组 6 塑限Wp (%) 82 组 7 塑性指数lp 82 组 8 液性指数lL 82 组 9 饱和度(%) 83 组 10 粘聚力c (kPa) 83 组 11 内摩擦角φ (°) 83 组 12 天然孔隙比eo 83 组 13 孔隙比 ei 408 组 14 压缩系数av 408 组 15 压缩模量Es 408 组 16 颗粒分析(%) 83 组 17 扰动样 颗粒组成百分比(%) 151 组 其中粉质粘土样22个，粉土样16个。 18 液限WL (%) 38 组 19 塑限Wp (%) 38 组 20 塑性指数lp 38 组 21 液性指数lL 38 组
下载: 导出CSV
表 4 图幅内主要岩土体物理力学参数参考表
岩土体 湿重度γ (kN/m3) 压缩模量Es (MPa) 黏聚力c (KPa) 内摩擦角φ (°) 压缩系数
a1～2允许承载力fa (kPa) 浅层粉细砂 19.5 10.0 0 30 − 160 粉土 17.0 5.0 10 21 0.30 180 粉质黏土 17.5 7.0 19 20 0.20 200 粉细砂 20.0 15.0 0 32 − 280 碎石土 22.0 − 0 38 − 350 强风化砂质泥岩 − − 22 21 − 350 中风化砂质泥岩 − − 25 24 − 450
下载: 导出CSV
表 1 Metadata Table of Database (Dataset)
Items Description Database (dataset) name Dataset of the 1∶50 000 Pingluo Station Map Sheet Area in the Yinchuan Basin in 2017- Obtained from Geological Engineering Drilling, Borehole Sampling and Geotechnical Tests Database (dataset) authors Sun Qiaoyin, Xi’an Center, China Geological Survey
Li Chengzhu, Xi’an Center, China Geological Survey
Fang Lei, Research Institute of Hydrological and Environmental Geology of Ningxia Hui Autonomous RegionData acquisition time 2017 Geographical area 1∶50 000 Pingluo Station map sheet area, Yinchuan Basin (J48E007018) Data format *.xls Data size 244 KB Data service system URL http://dcc.cgs.gov.cn Fund project China Geological Survey Project “Comprehensive Geological Survey in the Economic Zone in Ningxia Along the Yellow River”(DD20160263). Language Chinese Database (dataset) composition The dataset consists of 2 602 sets of test data obtained from 151 disturbed samples and 83 undisturbed samples that were taken from 14 engineering boreholes. It includes the following test indicators: stratum lithology of geological engineering boreholes, sampling date, geographical location of boreholes, ground elevations of borehole locations, sampling position, rock and soil type, grain composition analysis, liquid-plastic limit, shear strength, compression coefficient, modulus of compressibility, and water content
下载: 导出CSV
表 2 Summary of Types and Geological Engineering Conditions of Rock and Soil Masses in the Area
Type of rock and soil mass Geological engineering condition Rock mass Sandstone, mudstone and sandy mudstone Poor Soil mass Diluvial gravel soil Good Alluvial sandy soil Good Aeolian sandy soil Poor Lacustrine bog cohesive soil Poor
下载: 导出CSV
表 3 Statistics of Geotechnical Test Data of the Area
No. Sample type Test item Quantity of test data (set) Unit Remarks 1 Undisturbed samples Water content, Wo (%) 83 Set Including 59 sets of silty clay samples and 24 sets of silty soil samples 2 Natural density, ρo (g/cm3) 83 Set 3 Dry density, ρd (g/cm3) 83 Set 4 Specific gravity of soil particle, Gs 83 Set 5 Liquid limit, WL(%) 82 Set 6 Plastic limit, Wp(%) 82 Set 7 Undisturbed samples Plasticity index, lp 82 Set Including 59 sets of silty clay samples and 24 sets of silty soil samples 8 Liquidity index, lL 82 Set 9 Degree of saturation, (%) 83 Set 10 Cohesive force, c (kPa) 83 Set 11 Internal friction angle, φ (°) 83 Set 12 Natural void ratio, eo 83 Set 13 Void ratio, ei 408 Set 14 Compression coefficient, av 408 Set 15 Compression modulus, Es 408 Set 16 Analysis of grain composition, (%) 83 Set 17 Disturbed samples Grain composition, (%) 151 Set Including 22 sets of silty clay samples and 16 sets of silty soil samples 18 Liquid limit, WL(%) 38 Set 19 Plastic limit, Wp(%) 38 Set 20 Plasticity index, lp 38 Set 21 Liquidity index, lL 38 Set
下载: 导出CSV
表 4 Physical and Mechanical Properties of the Main Rock and Soil Masses in the Area
Rock and
soil massMoist unit weight γ (kN/m3) Compression modulus Es (MPa) Cohesive
force
c (KPa)Internal friction angle φ (°) Compression coefficient a1～2 Permitted load-bearing capacity fa (kPa) Shallow silty fine sand 19.5 10.0 0 30 / 160 Silty soil 17.0 5.0 10 21 0.30 180 Silty clay 17.5 7.0 19 20 0.20 200 Silty fine sand 20.0 15.0 0 32 / 280 Gravel soil 22.0 / 0 38 / 350 Strongly weathered sandy mudstone / / 22 21 / 350 Moderately-weathered sandy mudstone / / 25 24 / 450
下载: 导出CSV
-
[1] GB50021−2001, 中华人民共和国国家标准岩土工程勘察规范[S]. 北京: 中国建筑工业出版社.
[2] GB/T50123−1999, 中华人民共和国国家标准土工试验方法标准[S]. 北京: 中国计划出版社.
[3] 孙巧银, 方磊, 王化齐. 2018. 银川盆地1∶50 000芦花台幅工程地质钻孔及取样土工试验数据集[J]. 中国地质, 45(S2): 56−61. http://geochina.cgs.gov.cn/geochina/ch/reader/view_abstract.aspx?file_no=2018S207&flag=1
[4] 童国榜, 石英, 郑宏瑞, 张 静, 林 防, 何庆林, 宋祥华, 刘振西, 乔光东, 张纪祥, 羊向东, 张文卿. 1998. 银川盆地第四纪地层学研究[J]. 地层学杂志, 22(1): 42−51. http://www.wanfangdata.com.cn/details/detail.do?_type=perio&id=HY000001820784
[1] GB 50021−2001, Code for Investigation of Geotechnical Engineering[S].Beijing: Ministry of Construction (in Chinese).
[2] GB-T 50123−1999 Standard for Geotechnical Test Methods [S]. Beijing: China Planning Press (in Chinese).
[3] Sun Qiaoyin, Fang Lei, Wang Huaqi. 2018. Dataset of 1∶50 000 Luhuatai Map Sheet Area in Yinchuan Basin- Obtained from Geological Engineering Drilling, Borehole Sampling and Geotechnical Tests[J]. Geology in China, 45(S2): 75−82. http://geochina.cgs.gov.cn/geochina/ch/reader/view_abstract.aspx?file_no=2018S207&flag=1
[4] Tong Guobang, Shi Ying, Zheng Hongrui, Zhang Jing, Lin Fang, He Qinglin, Song Xianghua, Liu Zhenxi, Qiao Guangdong, Zhang Jixiang, Yang Xiangdong, Zhang Wenqing. 1998. Research on Quaternary Stratigraphy of the Yinchuan Basin[J]. Journal of Stratigraphy, 22(1): 42−51 (in Chinese with English abstarct). http://www.wanfangdata.com.cn/details/detail.do?_type=perio&id=HY000001820784
-
图(4)
表(8)
计量
- 文章访问数: 1202
- PDF下载数: 102
- 施引文献: 0