循环泵房施工组织设计.docx

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1、马来西亚民都鲁209E联合循环电站泵房施工组织设计马来西亚民都鲁209E联合循环电站工程Malaysia BINTULU 209E Combined Circulation Station Project 循环泵房Circulating Pumps Room施工组织设计CONSTRUCTION ORGANIZATION DESGIN2008年7月July 20081、工程概况GENERAL OF PROJECT 41.1、自然条件 NATURAL CONDITION41.2、工程地质及水文条件 GEOLOGICAL AND HYDROLOGICAL CONDTIONS41.2.1、工程地质 G

2、EOLOGICAL CONDITION41.2.2、水文条件HYDROLOGICAL CONDITION91.2.4、地下水 UNDERGROUND WATER101.3 、气候条件CLIMATICAL CONDITION111.3.1、气温 TEMPERATURE111.3.2、相对湿度及大气压力RELATIVE HUMIDITY AND ATOMSPHERICAL PRESSURE111.3.3、降雨量AMOUNT OF RAINFASLL121.3.4、风向频率WIND FREQUENCY121.4、地震烈度 SEISMIC INTENSITY121.5、淡水供应 FRESH WATER

3、 SUPPLY121.6、施工基本条件BASIC CONSTRUCTION CONDITTIONS 13RE1.6.1、电源 POWER SUPPLY131.6.2、水源 WATER SOURCE131.6.3、临时道路 TEMPORARY ROAD131.6.4、施工场地CONSTRUCTUION SITE131.6.5、办公区OFFICES AREAS142、施工准备CONSTRUCTION PREPARATION142.1、施工组织准备PREPARATION FOR CONSTRUCTION ORGANIZATION142.1.1、组建项目经理部ESTABLISH PROJECT MAN

4、AGER DEPT.142.1.2、技术准备TECHNICAL PREPARATION152.1.3、物资设备准备PREPARATION OF MATERIALS AND EQUIPMENT 162.1.4、施工人员准备PREPARATION OF CONSTRUCTING PERSONS172.1.5、生产现场准备PREPARATION OF PRODUCTION SITE172.2、施工临时设施及现场布置TEMPORARY CONSTRUCTION FACILITIES AND SITE ARRANGEMENT 182.2.2、施工用水WATER USED FOR CONSTRUCTION

5、182.2.3、施工用电POWER USED FOR CONSTRUCTION 182.2.4、施工道路ROADS FOR CONSTRUCTION192.2.5、弃土场 EARTH DISCARDING AREA 193、施工方法及工艺流程 CONSTRUCTION METHODS AND PROCESSES203.1、施工方法概述GENERAL OF CONSTRUCTION METHODS203.3、泵房沉井施工流程CONSTRUCTION FLOW OF PUMPS ROOMSUNK WELL214、循环水泵房主要施工方法 MAIN CONSTRUCTION METHODS OF CI

6、RCULATING WATER PUMP ROOM224.1、基本工艺BASIC PROCESS234.2、沉井分节高度 SUNK WELL SECTION HEIGHT 234.3、沉井基础处理TREATMENT OF SUNK WELL FOUNDATION234.3.1、基坑 FOUNDATION PIT244.3.2、砂垫层铺设 SAND BEDDING LAYING254.4、各工序施工方法 CONSTRUCTION METHOD OF ALL STEPS254.4.1、模板FRAMEWORK254.4.2、脚手 SCAFFOLD264.4.3、钢筋加工与绑扎STEEL BAR FA

7、BRICATION AND BINDING274.4.5、施工缝 CONSTRUCTION JOINT304.4.6、拆模 FRAMEWORK DISMENTLE304.5、沉井下沉 SUNK WELL SINKING304.5.1、准备工作PREPARATIVE WORKS314.5.2、水力机械排水下沉 WATER DISCHARGING SINKING WITH HYDRAULIC MACHINES354.5.3、水力机械不排水下沉NON-WATER DISCHARGING SINKING WITH HYDRAULIC MACHINES384.5.5、沉井下沉速率控制VOLECITY C

8、ONTROL OF SUNK WELL SSINKING 414.5.6、常遇问题的预防及处理 PRECAUTION AND TREATMENT OF FREQUENT QUESTIONS 424.6、沉井封底 SUNK WELL BOTTOM SEALING434.6.1、干法封底 DRY-WAY BOTTOM SEALING444.6.3、水下封底主要技术措施MAIN MEASURES FOR UNDERWATER BOTTOM SEALING514.7 、钢筋混凝土底版浇筑POURING OF REINFORCED CONCRETE FOUNDATION SLAB534.8、沉井二次混凝

9、土及上部主体结构施工CONSTRUCTION OF SECONDARY CONCRETE AND UPPER STRUCTURE OF SUNK WELL534.8.1、钢筋工程 STEEL BAR WORK535、泵房施工资源配备RESOURCE ARRANGEMENT FOR PUMPS ROOM CONSTRUCTION585.1、岗位设置及人员计划PLAN OF JOB POSTS AND PERSONNEL 585.2、施工机械设备CONSTRUCTING MECHINES606、施工进度计划及保证措施 CONSTRUCTION SCHEDULE AND ASSURANCE MEAS

10、URES636.1、泵房施工节点进度计划SCHEDULE AND PLANNING OF PUMPS ROOM CONSTRUCTION STEPS636.2、工期保证措施 SCHEDULE ASSURANCE MEASURES647、质量目标及保证措施QUALITY OBJECTIVE AND ASSURANCE MEASURES677.1、质量目标QUALITY OBJECTIVE677.2、质量保证措施QUALITY ASSURANCE MEASURES677.2.1、总则GENERAL RULES677.2.2、砼工程施工CONCREGTE WORK CONSTRUCTION688、安

11、全保证措施SAFETY ASSURANCE MEASURE758.1、安全目标SAFETY OBJECTIVE758.2、安全管理措施SAFETY CONTROL MEASURE758.2.1、通用条款GERNERAL TERMS758.2.2、重点环节IMPORTANT STEPSE779、雨季施工措施 MEASURES FOR RAIN-SEASON CONSTRUCTION81 9.2、雨季混凝土施工CONCRETE CONSTRUCTION IN RAIN SEASON819.3、雨季施工其它注意事项OTHERS FOR CONSTRUCTION IN RAIN SEASON8110、

12、附图 ATTACHED PLANS错误！未定义书签。1、工程概况GENERAL OF PROJECT1.1、自然条件Natural condition该项目位于东马砂捞越州民都鲁市（BINTULU），本期扩建是在原有的7#、8#两台9E开式循环燃机发电机组的基础上新建两台余热锅炉、一台汽轮发电机组及相应的附属配套设施。This project is located in BINTULU, Sarawak state, east Malaysia, this extension is to build 2 new residual heat boiler, 1 turbine-generator

13、 unit and relevant accessories based on the original two sets (#7 & #8 ) of 9E open-type circulation turbine generating units. 厂址位于南中国海海岸约500m处，离明都鲁港口很近，运距约6km，厂址地势较平坦。The plant is located at 500m away from the coast of South China Sea which is very near from BINTULU port, transportation distance is

14、 about 6km, its topography is flat.1.2、工程地质及水文条件 Geological and hydrological conditions1.2.1、工程地质 Geological condition该工程现场位于南中国海边，现场和周围环境为近岸沉积物和沼泽沉积物所覆盖。沉积物由砂子、粘质砂土和软粘土所组成。This project is located nearby South China Sea, the site and the surrounding is covered by sediment and swamp sediment, the sed

15、iments are consist of sands, viscous sandy soil and soft clay. 场地土类别：II类。Site earth class: Class II拟建场地本次勘探深度范围内揭露出的地基岩土体由第四系土层和下伏泥质粉细砂、粉细砂岩构成，其地层岩性由上至下分述如下：The foundation soil exposed within the surveyed range in the planned site is consist of quaternary soil horizon and buried argilaceous fine sil

16、t, fine siltstone, other stratum rocks is described respectively as follows:（1）层素填土：系新近人工堆积，结构较松散，均匀性差，若不进行严格的岩土工程处理，不能作为地基持力层；Layer（1）Plain fill: accumulated artificially, loose structure, poor uniformity, can not be taken as bearing layer until strict rock treatment is done （2-1）层淤泥质粉质粘土呈流塑状态；Laye

17、r（2-1）Mucky silty clay shows fluid（2-2）层粉质粘土呈可塑状态；Layer (2-2）Silty clay shows ductile（3-1）层粉细砂呈松散状；Layer（3-1）fine silt shows loose（3-2）层粉细砂呈稍密状，具较高的压缩性、承载力低的工程特性，其建筑性能较差；Layer （3-2）fine silt shows dense, in high compressibility, low bearing capacity, its construction ability is low.（3-3）层粉细砂呈中密状；Lay

18、er （3-3）fine silt shows medium dense（3-4）层粉细砂呈密实状，具低压缩性、承载力较高的工程特性，其建筑性能良好。上述各层分布均不连续，层厚变化较大。Layer （3-4）fine silt shows the engineering characteristics of high density, low compressibility, high bearing ability and high construction ability. The above layers are not consecutive, widely vary in thick

19、ness. （3-5）层很密的粉细砂层多呈半胶结状态，其建筑工程特性良好。该层大部分地段分布厚度较大；Layer （3-5）fine silt layer in high density mostly shows self-binding condition, it has a good workability. Most section of this layer is thick.（4-1）层粉细砂呈中密状，具中等压缩性、承载力中等的工程特性，其建筑性能一般；Layer （4-1）fine silt shows medium-dense, it has a medium compressi

20、bility, and medium bearing capability, ordinary construction ability.（4-2）层粉细砂呈密实状，具低压缩性、承载力较高的工程特性，其建筑性能良好。上述各层分布均不连续，层厚变化较大。Layer （4-2）fine silt shows dense, with the characteristics of low compressibility and high bearing capability, its construction ability is high. All the above layers are not

21、consecutive, and widely vary in thickness.（4-3）层很密的粉细砂层亦具良好的建筑特性，但埋藏较深。Layer （4-3）fine silt in high density has very good construction ability, but buried deeply.（5-1）层粉质粘土呈流塑状态，具高压缩性、承载力低的工程特性，其建筑性能差；Layer （5-1）silty clay show fluid condition, it is in the characteristics of high compressibility an

22、d low bearing capability, its construction ability is poor.（5-2）层粉质粘土呈软塑状态，具较高压缩性、承载力低的工程特性，其建筑性能较差；Layer （5-2）silty clay shows soft plastic condition, it is in the characteristics of high compressibility and low bearing capacity, its construction ability is poor（5-3）层粉质粘土呈可塑状态，建筑性能中等；Layer （5-3）Sil

23、ty clay shows ductile, its construction ability is medium（5-4）层粉质粘土呈硬塑状态，建筑性能较好，但此两层埋藏较深。Layer （5-4）Silty clay shows hard plastic condition, its construction ability is good, but this two layers are buried in deeper depth.（6-1）层强风化泥质粉细砂岩及(6-2）层中等风化泥质粉细砂岩的建筑性能良好，但埋藏较深。Layer （6-1）The construction abil

24、ity of the strongly weathering clay fine silt rock (6-2） and medium weathering clay fine silt rock are very good, but buried in deep depth.下伏基岩为浅灰、灰白色泥质粉细砂岩，普遍间夹薄层浅褐色砂质泥岩。根据其风化程度，将下伏基岩划分为（6-1）层强风化层和（6-2）层中等风化层。（6-1）层多被风化成砂状，钻孔中很难取出较完整的岩芯，一般层厚1.00-4.00m；（6-2）层岩性相对较完整，岩芯多以短柱状为主，层厚较大，未揭穿。Buried foundat

25、ion rock is french gray or clay fine silt offwhite, usually contains thin layer of sandy clay rock. According to the status of weathering, the buried foundation rock is divided into strongly- weathered layer（6-1） and medium- weathered layer(6-2）. Layers （6-1）are mostly weathered into sandy condition

26、, it is hard to take out a complete rock core, normally layer thickness is 1.00-4.00m; layer (6-2）has relatively complete lithology, its rock cores are mostly short-column shape, thickness is big, 拟建场地内分布的(3-1)、（3-2）层粉细砂在7度地震力的作用下有产生液化的可能，可液化层主要分布在拟建主厂房和海上引水管部分地段（地内分布的（2-1）淤泥质粉质粘土及（5-1）层粉质粘土承载力特征值小于

27、80kPa。The fine silt layers (3-1)&（3-2）distributed in the planed site is probabaly to liquidize under the action of seismic force of Grade 7, the liquidizing layers mainly distributes in the sections of the planed main workshop and on-sea water introducing pipe, characteristic value of mucky silty cl

28、ay (2-1)and silty clay （5-1）is smaller than 80kPa 由于拟建场地上部地基土层较软弱，地下水埋藏较浅，基坑开挖时，由（2-1）层构成的坑壁段易产生坍塌，（3-1）层、（3-2）层易演变成流砂，故需要采取适当的坑壁支护措施，同时采取适当的基坑降水措施。As the upper earth of the planed sites foundation is soft, the underwater is buried in a shallow depth, when foundation pit is excavated, the pit wall s

29、ection consisted of the layer（2-1）is easy to collapse, Layer (3-1) & (3-2) is easy to change into drifting sand, so proper supporting measure is necessary, meantime, some foundation pit water level lowering should be taken. 循环水泵房地段0-20m深度范围内分布的地基土层强度较高，初步设计的泵房基底座落在建筑性能良好的（4-3）层很密状的粉细砂层之上，根据该地段地基土构成及

30、其场地条件，循环水泵房下部构筑物可采用沉井法进行施工（由于该地段地下水埋藏较浅，而大开挖所形成的坑壁均为砂层，虽然其密实度较好，但遇水侵泡后仍有可能产生流砂，从而导致坑壁坍塌），施工期间应采取切实可行的降排水措施，根据我公司的各类地质条件沉井施工经验，本期工程的基坑降水可以采用深井降水和坑内排水措施相结合的方法进行施工，严防坑壁泡水。The strength of the foundation soil layer distributed within 0-20m depth range in circulating water pump rooms section, preliminaril

31、y designed pumps room base is located on the fine silt in high-dense layer (4-3)with good construction ability, according to the composition of foundation soil and site condition, the lower structure of circulating water pumps room can be constructed in the way of sunk well(as the underwater of this

32、 section buried in a shallow depth, pit walls produced by big excavation are all sand layer, although it has a good compactness, occasionally soaking by water is still possible to create drifting sand then to collapse), during construction work, appropriate and feasible level lowering and water drai

33、ning measure should be taken, based on our companys construction experience in sunk wells under all classes of geological condition, foundation pit water level lowering of this project can be realized in the combined way of well water level lowering and inside-pit water draining to strictly prevent

34、socking of pit wall 1.2.2、水文条件 hydrological condition1.2.2.1、海水标高 Sea water elevation最低天文潮位 (LAT)lowest astronomical tide level0.2 m平均较低水位 (MLLW)Average low water level 0.7 m平均海平面 (MSL )Average Seal Level1.4 m平均较高的高水位 (MHHW)Average Higher High Water Level1.7 m最高天文潮位 (HAT) Highest Astronomical Tide L

35、evel2.4 m1.2.2.2、海水温度 Sea water temperature最高日平均温度: 33 Highest average daily temperature最低日平均温度: 25 Lowest average daily temperature日平均温度: 29.3 Average daily temperature设计冷却水温取31，最高水温34 。Designed cooling water temperature 31Highest water temperature 34 1.2.3、电站地面 Power station ground电站地面标高如下: Elevat

36、ion of Power station ground:平均海水标高 (MWL ) := EL +1.60mAverage seawater elevation电厂地面标高（PGL） := EL + 3.50mElevation of plant ground1.2.4、地下水 Underwater 拟建场地大部分取水孔内地下水对混凝土结构具弱腐蚀性，仅一个取水孔内地下水对混凝土结构无腐蚀性，故建议按弱腐蚀性考虑。场地地下水对混凝土结构中的钢筋无腐蚀性，对钢结构具有弱腐蚀性；海水对混凝土结构、对混凝土结构中的钢筋及钢结构均具有中等腐蚀性。The underwater in most intak

37、e holes in the planed site are corrosive to concrete structure, only one intake hole are exceptional, so we suggest to consider it as light corrosion; seawater has a medium corrosion to both the steel bars in concrete structure and to steel structure. 拟建场地同一孔中地下水位的大部分变幅不大，个别孔中的地下水位变幅较大，估计是受大气降水影响所致。

38、而在平面上各个孔中的地下水位埋藏深度存在着一定差异，最浅0.49m(见于附属建筑物地段地勘资料)，最深3.27m(见于循环水管地段地勘资料)。Mostly, the underwater level in the same hole in the planed site varies no much, only a few holes are exceptional, probably due to precipitation. On plane, the underwater level of all the holes are various in burying depth, the s

39、hallowest 0.49m (see geological survey document of accessory buildings section), the deepest 3.27m (see geological survey document of circulating water pipe section ). 1.3 、气候条件 Climatic condition电站地处海边的热带区域，气候炎热，空气潮湿、含盐雾。The power station is located in seaside tropic zone, the climate is hot, air i

40、s wet and includes salt fog. 1.3.1、气温 Air temperature年平均温度 26.7Average annual temp.日最高平均温度30.9Highest average daily temp.日最低平均温度: 23.5Lowest average daily temp.最高温度 36.3 Highest temp.最低温度 19.2Lowest temp.1.3.2、相对湿度及大气压力 Relative humidity and atmospheric pressure相对湿度每日的变化范围大约是32。 Daily change range o

41、f relative humidity 32年平均相对湿度85.9%Average relative annual humidity最高大气压力1065hPaHighest atmospheric pressure最低大气压力955hPaLowest atmospheric pressure1.3.3、降雨量 Rainfall 平均降雨量: 3759 mm (1951-2004)Average rainfall年最大降雨量: 4692 mmHighest annual rainfall年最小降雨量: 2900 mmLowest annual rainfall日最大降雨量: 222 mmHigh

42、est daily rainfall月平均降雨量（19512004）Average monthly rainfall项目item 月份Month123456降雨量 (mm)Rainfall416268272251231259项目Rainfall月份Month789101112降雨量 (mm)Rainfall2502823093584154471.3.4、风向频率 Wind direction frequency根据民都鲁（BINTULU）机场气象站1975年2003年共28年风向频率资料统计， 30年最大风速为31 m/s.According to wind direction frequen

43、cy statistics of BINTULU airport weather station during 1975-2003, highest wind speed is 31 m/s in 30 years 1.4、地震烈度 seismic intensity地震水平加速度 0.05gSeismic horizontal acceleration 1.5、淡水供应 fresh water supply电厂淡水水源来自城市生活饮用水管网。Fresh water of power plant comes from the municipal life and drinking water

44、pipeline network.1.6、施工基本条件 basic construction conditions1.6.1、电源 power supply甲方为取水泵房、顶管、埋管施工提供500kv电源变压器，现场需要设置配电房，现场施工和生活用电需要用电缆、电源控制柜分别引接到施工现场和生活区；Party A shall provide 500kv power supply transformer for intake pumps room, jacking pipe and buried pipe, switching house shall be prepared, the power

45、 for site construction and life power needs to be respectively connected to construction site and life zone with cable and cubicle.1.6.2、水源 water source施工用水由甲方在距离施工现场100米范围内就近提供接口，生活用水目前尚未形成环网，由甲方在生活区范围内就近提供接口，接口以下部分由我公司自行解决。Party A shall provide an interface within 100m away from construction site

46、for the water used for construction work, at present, no life water ring network is established, party A shall provide interface as near as possible within life zone, the following part will be on us 1.6.3、临时道路 Temporary road现有一条临时道路进入施工区域附近，进场后需要从该道路引接一条施工道路到达取水泵房、顶管等施工场地。Now a temporary road has b

47、een accessible to construction zone and vicinity, one working road needs to be led to the construction sites of water pumps room and jacking pipes after accessing construction site. 1.6.4、施工场地 Construction site施工场地由业主和甲方提供，分施工临建设施用地和施工用地，总面积约11000m2。Construction site will be provided by the owner or Party A, including temporary building land