参考地质.docx

1.0 、前言Foreword受巴斯夫（中国）有限公司和德希尼布天辰化工工程有限公司委托，我院对拟建“巴斯夫INTERMEDIATES THF/POLY-THF项目”场地进行工程地质勘察工作。Commissioned by BASF (China) Co., Ltd and TECHNIP COFLEXIP Chemical Engineering Co.,Ltd， our institute has undertaken the engineering geologic investigation of the INTERMEDIATES THF/POLY-THF Project.1.1、工程概况Project profile拟建工程位于上海市化学工业区B700B900地块内，东近目华路、南近南河。 场地内主要拟建工艺装置区及辅助配套建筑物，各拟建（构）筑物的设计参数见表1，平面位置见“勘探孔平面布置图”。The project is located in Plot B700B900 of Shanghai Caojing Chemical Industry Park (SCIP). It is to the west of Muhua Rd and to the north of Nan River. Please refer to Table 1 for the proposed process plant, the accessory buildings, the design parameters of the proposed buildings (structures). Please refer to the Floor Plan of the Boreholes for1.2、勘察目的及技术要求Investigation purposes and technical requirements本次勘察属详细勘察阶段，目的是为拟建(构)筑物的基础工程、基坑工程和厂区道路，地坪工程的设计、施工提供必要的工程地质资料。具体任务如下：This investigation is on the detailed investigation phase, the objective of which is to provide necessary geological data for the design and construction of buildings foundation and pits, the roads and the ground in the plant. Details are as following:A、查清拟建(构)筑物地基压缩层及基坑稳定验算深度范围内地基土构成、分布规律及其工程地质特性； To learn the composition, the distribution rules and geological features of foundations compression stratum, and of the foundation soil within the calculation depth of pit stability.B、提供各土层物理力学性质综合指标，地基承载力设计值fd和桩基承载力参数(包括桩周土极限摩阻力标准值fs和桩端土极限端阻力标准值fp)，提供基础沉降计算所需岩土参数； To provide the comprehensive mechanical parameters of each stratum, bearing capacity of foundation fd, bearing capacity of pile foundation (including ultimate friction on pile sides fs and ultimate end bearing on pile tops fd), and the geotechnical parameters needed in foundation settlement calculation.表1 拟建（构）筑物设计参数一览表Table 1 Overview of the design parameters of the proposed buildings (structures)NAME OFSTRUCTURETYPE OFSTRUCTUREDIMENSIONHEIGHT/STOREYLOADING OFSTRUCTURETYPE OFFOUNDATIONALLOWABLESETTLEMENT(mm)DIFFERENTIALSETTLEMENT(mm)THF PlantConcrete/steel105.0m22.0m3 storey/21.0m3500kN per columnPile raft2510ReactorsConcrete7.0m dia.7.8m2000kNPile2510Compresso/blowerConcrete12.m5.0m-1100kNPile2510POLY-THF PlantConcrete/steel35.8m39.9mcolumn grid 7.0m8.0m6 storey/31.0m4500kN per columnPile raft2510Tank FarmSteel7.5m dia.12.0m120kPaPile raft1501/80Pumpsconcrete6.5m12.5m-30kPaRaftIso-butane storageconcrete5.5m dia.20.0m5000kNPile raft2510Pumpsconcrete-30kPaRaftThermo ReactorSteel25.0m36.0m10.0m15000kNPile raft2510Cooling Towerconcrete30.0m18.0m10.0m100kPaPile2510Control buildingconcrete(blast resistant)52.8m16.6m3 storey/14.4m2300kN per columnPile2510Transformerconcrete4.0m4.0m-50kPaRaft2510File Water Tankconcrete25m40m4.5m deep60000kNPile raft2510File Water Tankconcrete25m30m4.5m deep45000kNPile raft2510Gate houseConcrete wall & steel roof12.3m13.5m30.3m13.8m1 storey/4.9m25kPaRaft2510Fire BrigadeConcrete wall& steel frame10.5m10.5m1 storey/5.2m25kPaRaft2510Substationconcrete34.3m6.5m1 storey/5.7m35kPaRaft2510Power supply forCooling waterconcrete10.8m12.4m1 storey/5.2m30kPaRaft2510Pipe rackConcrete/steel2.0m-5.0m wide6.0m-20.0m900kN per columnPile2510H2-PlantC、 明确场地地震动峰值加速度，地震基本烈度及场地类别；进行地基土的地震液化判定,如有液化，则计算液化等级和液化强度比。To specify the maximum acceleration of earthquake, basic earthquake intensity, and site class. If there is seismic liquefaction, liquefaction scale and liquefaction intensity ratio need to be calculated.D、 简述场地地形、地貌特征，查清拟建场地内可能分布的近代海沟，海槽淤积层等不良地质现象的分布规律及性质，并评价对本工程的影响，提出相应的整治措施。To give a brief description of the topographical features, and the distribution rules and features of some adverse geological conditions, such as possible recent sea channels, and bay mucky stratum. In addition, to estimate their effects on this project, and to put forward corresponding measures.E、 调查场地浅部地下水埋藏特征，补给、排泄规律；了解杭州湾潮汐动态和本场地地下水的联系及对本工程的影响。判定场地内地下水对混凝土及钢结构的腐蚀性及其程度，并提出相应的防护措施。To study the embedment features, recharging and charging rules of the shallow ground water. To learn Hangzhou Bay tides influence on the site, meanwhile, to estimate the ground waters influence on the project. In addition, to specify ground waters corrosion extent on concrete and steel structure, and to put forward corresponding protection measures.F、评述场地工程地质条件，根据各拟建工程的特点，对相应的基础形式作出评价及建议：To describe the geological conditions of the site. And according to the features of different buildings, to estimate and recommend suitable foundation form for each building:a、 对拟采用天然地基的辅助配套建筑，建议合理的基础持力层和基础砌置深度；To recommend suitable sustaining layer of foundation, and foundation depth for the BUILDINGs that would adopt shallow foundation.b、对拟采用桩基础的建(构)筑物，建议合理的桩基持力层，桩端入土深度、桩型、桩径及相应的桩基承载力。To recommend suitable sustaining layers, depths, types, diameters, and bearing capacities of foundation piles for the buildings in PROCESS PLANT, which would adopt foundation piles. c、对厂区道路、地坪工程，建议合理的路基。对浅部土层作为路基的可行性进行评价，并提出相应的加固方案，为路基改良设计、施工所需的有关岩土参数进行建议。To recommend suitable foundation for the roads and ground in the plant; to evaluate the feasibility of shallow soil as the road foundation, and to put forward corresponding consolidation programs. To recommend the geological parameters needed in design and construction of road foundation improvementd、评价有关建(构)筑物基坑的开挖条件，建议合理的基坑开挖围护及降水方案，并提出基坑设计所需的岩土参数。To predict the conditions for pit excavation; to recommend pit bracing and dewatering plans; and to give geotechnical parameters needed for the pit design.G、评价基础和基坑工程施工对环境的影响，提出工程施工需注意的有关事项。 To predict the effects of pit construction on the environment, and to illustrate the problems that need attention during construction. 1.3、执行规范、规程及标准Codes, regulations and standards abided byA、中华人民共和国国家标准 National standards of PRC. a.岩土工程勘察规范（GB50021-2001） Code for Investigation of Geotechnical Engineering GB50021-2001b.建筑地基基础设计规范（GB50007-2002）Standard for Foundation Design for Building Foundation GB50007-2002c.建筑抗震设计规范(GB50011-2001)Standard for Building Seismic Design GB50011-2001d.构筑物抗震设计规范(GB50191-93)Standard for Building Seismic Design GB50191-93e.中国地震动参数区划图(GB18306-2001)National Seismic Zonation of Dynamic Parameters GB18306-2001f.土工试验方法标准(GB/T50123-1999)Standard for Soil Test Methods GB/T 50123-99g.岩土测试规范(GB/T50266-1999)Standard for Geotechnical Test Methods GB/T50266-1999h.地下水水质分析标准(GBJ14848-93)Standard for Groundwater Quality Analysis (GBJ14848-93)i.工程建设标准强制性条文The Compulsory Provisions of Engineering Construction StandardsB、专业规范 Professional standards:a.静力触探技术标准 (CECS 0488)Technical Standard for Cone Penetration CECS 0488b.岩土工程勘察报告编制标准(CECS 15618-95)Standard for Geotechnical Investigation Report CECS 15618-95C、上海市地方规范 Local standards of Shanghai Citya.岩土工程勘察规范（DGJ 08-37-94）Shanghai Code for Geotechnical Investigation, DGJ 08-37-94b.地基基础设计规范（DGJ 08-11-1999）Code for Foundation Design DGJ08-11-1999c.建筑抗震设计规范(DGJ 08-9-92)Standard for Building Seismic Design DGJ08-9-92d.基坑工程设计规程（DGJ 08-61-97）Code for Design of Foundation Pit DGJ 08-9-92e.地基处理技术规范（DGJ 08-40-94）Technical Code for the Foundation Treatment DGJ08-40-94f.上海地区地基钻探安全操作规程 (DGJ 08-3-83)Safety Code for Foundation Investigation Boring in Shanghai DGJ 08-3-83D、境外标准 Foreign standardsa.英国标准 British standardsa1原位测试标准（BS5930）BS 5930 Code of Practice for Site Investigationa2民用工程勘探土工试验方法（第1部分第9部分）（BS1377）BS1377 Methods of test for soils for civil engineering purposes (Part 1 to Part 9)b.美国标准 American standards岩土工程试验标准（ASTM）之D1452、D1194、D2113、D2487、D3441D1452, D1194, D2113, D2487 and D3441 in Standard for Soil Test Methods (ASTM).1.4、工作简况Brief introduction of the work本次勘察工作按德希尼布天辰化工工程公司提出的岩土勘察要求及合同工作量所编制的勘察投标书和2002年8月29日现场会议要求执行，勘探孔孔位、孔类及室内外实验项目由委托方确定。The investigation work scope is in accordance with the requirements from the site meeting on Aug. 29th, 2002, and with the Bidding Documents for the Investigation which is based on both the geotechnical investigation requirements given by TECHNIP COFLEXIP and the work scope specified in the Contract. The location and type of the boring holes, and the test items are specified by the Consignor. 勘察野外施工自2002年8月24日进场，至2002年9月2日结束，开动XY-1型钻机4台、SY-10型静探车2台，施工总历时10天。The field investigation was started from Aug. 24th, 2002 and completed on Sept.2nd, 2002. Four sets of XY-1 type driller and 2 sets of SY-10 SPT equipment were used during the 10-day site construction. 勘察全过程严格按照本院根据ISO 9000标准编制的质量保证体系文件执行，施工质量优良。The quality assurance system in accordance with the ISO 9000 system implemented by our Institute was strictly followed during the investigation. The construction quality is evaluated as excellent. 1.5、勘察手段与完成工作量Investigation methods and work scopeA、取样钻孔采用泥浆护壁循环钻进，分回次钻进取芯，采取不扰动土样。Mud flush drilling and core drilling were adopted in boring the holes for the undisturbed soil samples. B、标准贯入试验在钻孔内进行，钻孔采用泥浆护壁循环钻进，分回次钻进取芯，进行标准贯入试验并采取扰动土样。 SPT was done in the borehole. Mud flush drilling and core drilling were adopted in the SPT for the undisturbed soil samples. C、静力触探试验采用单桥探头进行测试，由专用微机采集、记录数据并形成Ps值随深度变化的连续曲线。 The cone penetration test was done with a single-bridge sensor and the data were collected and recorded by a computer, and thus the continuous curve of the Ps value indifferent depth was made. D、密度试验采用环刀法，进行两次平行测定。 Density test was done with core cutter method , two parallel tests were made. E、电阻率测试采用直流电阻率法，以求得土层的视电阻率。 Electricity resistivity test was done with the direct-current resistance method to get “”of the soil. F、十字板剪切试验采用电测十字板设备进行。 The vane-shear test was done with electronic vane-shear device. G、现场注水试验采用钻孔降水头注水法试验。 The field water injection test was done with the injection method of borehole dewatering. H、加州承载比试验（CBR）在室内进行，分别在最大干密度、最优含水量情况下及饱和状态下进行试验。 The California bearing ratio (CBR) test was done in the lab and under the conditions of maximum dry density, optimum water content and saturated condition. I、勘探孔定位以设计孔位坐标为依据，以场地所在化工区内设置的坐标控制点（PG4、PG5、PG6点）为基准，换算成统一的坐标系统，进行现场放样。并测量各孔口高程，采用吴淞高程系统，高程引测于化工区内所设置的PG5点，该点吴淞高程为3.3421m（上海化学工业区提供）。 Based on the coordinates of the designed holes, and the coordinate control points （PG4, PG5 and PG6）set in the Chemical Park, the positioning of the benchmarks is changed into the overall reference coordinates. And the positions are set out accordingly. The altitude of each borehole was measured with the Wusong Altitude system. The starting point of the altitude measurement was Point PG5 in the Chemical Park, and the point was at 3.3421m WuSong level (provided by SCIP). J、对现场采取的水、土样按要求进行水、土工试验，其中动三轴、共振柱试验经业主同意，以补充资料的形式提交成果。The water and soil tests on the water and soil samples taken on the field were done in accordance with the requirements. The results of dynamic triaxial tests, and resonant column tests are to be provided in supplements, as approved by the Contractor. 本次勘察工作完成工作量见表2。Please refer to Table 2 for the investigation work quantity. 勘 探 工 作 量 一 览 表Work Quantity Table 2项 目item单位unit数 量qty项 目item单位unit数 量qty钻 探boring孔数holes个Nr37+2土工测试含水量、容重、比重water content, specific volume, specific weight个Nr3153进尺depth米m1598.55液限、塑限Atterberg limit个Nr882静力触探cone penetration孔数holes个Nr70+3压缩系数、压缩模量compressibility coefficient, compressibility modulus个Nr2122进尺depth米m2380.0颗粒分析grain size analysis个Nr637十字板剪切试验vane-share孔数holes个Nr10室内渗透lab permeability test个Nr28points点109固结系数（Cv）consolidation coefficient个Nr100进尺depth米173.0无侧限抗压强度unconfined compression strength个Nr36击实试验Compaction test坑上hole top个Nr2固结试验consolidation test400kPa个Nr212坑下hole bottom个Nr2600kPa个Nr60测电阻率试验electric resistance个Nr7800kPa个Nr20现场注水试验in-situ injection test段101200kPa个Nr23加州承载比试验CBR个Nr43200kPa个Nr24密度试验density test个Nr6剪切试验shear test固结快剪consolidation quick direct shear个Nr160标准贯入试验SPT段469快剪quick direct shear个Nr40取样sampling不扰动土样undisturbed soil sample个Nr315有机质含量organic matter contents26扰动土样disturbed soil sample个Nr469三轴剪切试验（CU/UU）triaxial shear test个Nr15/42水样water sample组group87动三轴测试dynamic triaxial test个Nr20测量measurement定点放样points setting out点points134共振柱测试resonant column test个Nr10高程测量altitude measurement点points134水分析water analysis总硫酸含量contents of suphlate个Nr30潜水位测量phreatic water measurement点points37氯化物含量contents of Chloride个Nr83PH值测试PH value measurement点points90水质分析water quality analysis组group42.0场地工程地质条件Engineering geological condition of the site2.1、地形地貌特征及场地现状Topography and Geomorphology of the Site场地属长江三角洲东南前缘潮坪地貌类型，于19961997年经围海吹填形成，吹填土源于场地南部杭州湾潮间带沉积粉土，局部为淤泥质粉质粘土，厚度变化大。The site is of the damp soil type of the southeast frontier of the Changjiang River Delta. It was reclaimed from the sea during 1996-1997. The backfill was the sediment soil from the Hangzhou Bay to the south of the Site. Part of the backfill is sandy silt with various depths.2.2、地基土的构成与特征Components and features of foundation soils根据野外勘探结果，结合现场原位测试与室内土工试验成果，按照规范DGJ08-37-94“附录D”，将本场地60.35m以浅揭露的土层划分为12个层次。场地各土层纵横空间分布特点见工程地质剖面图，地基土分层特征见表3。Based on the field investigation, in-situ tests and lab soil tests, the soil within depth of 60.35m in the site can be classified into 12 strata according to Attachment D of the Code DGJ08-37-94. Please refer to the engineering geotechnical section plan for the distribution of each stratum, and see Table 3 for the stratas features. 2.3、地基土层物理力学性质综合指标Parameters of the physical properties of the foundation soil根据地基土层划分结果，以各地基土层为统计单元，对地基土物理力学性质指标进行分析，剔除个别明显不合理偏值后，采用10舍去法进行分层统计，求得各地基土层物理力学性质综合指标(包括平均值、统计样本数与最大、最小值及变异系数)。 According to the ground soil division, each stratum is used as one statistics unit. Its mechanical indexes of the ground soil are analyzed, and some diverging values are cancelled. Thus, with the statistics method of canceling 10%, the comprehensive mechanical parameters of each ground soil stratum are obtain (including the average, the statistics sample number, the max, the min, and the variance coefficient).颗粒分析指标、直剪快剪指标、前期固结压Pc、压缩指数Cc、固结系数Cv、有机质含量、三轴剪切试验指标、加州承载比试验指标、击实试验指标、密度试验指标、渗透试验指标、视电阻率、十字板剪切试验指标及静探