袋装砂井施工组织设计

evaluation of scientific development. Nature security type-nature security is to maintenance people of health value for target, through strengthening security based management, and risk management, and equipment management and technology supervision, ensure production in the people, and real, and system, and system, elements security reliable, and harmony unified, full control various against factors, achieved thought no slack, and management no empty document, and equipment no hidden, and system no blocked, and unit zero non-stopped. Quality and efficiency-quality benefit is to adhere to the enterprise survival, profit and development business truth, adhere to the all activity is economic activity, all costs can be controlled, money should not be wasted management philosophy, management analysis, to improve management quality, improve cost control capacity and market competitiveness. Innovation of science and technology-science and technology innovation is to play the role of science and technology as the primary productive force, active use of new technologies, new materials, new processes, new equipment, increase investment in science and technology, strengthening scientific and technological training, speeding up transforming scientific and technological achievements, forming a number of proprietary technology, enhancing core competitiveness. Resource-saving-the-resources saving enterprise was to reduce coal consumption, water consumption, electricity at the core, enhance the operation of lean management to realize low consumption, high efficiency, reduce production costs. Second is to strengthen the business, financial, material, information and the optimization of organization and management, saving the internal transaction costs. Harmonious development of harmonious development-is to construct a foreign environment for development. XING refers to the internal security firm and internal management of the internal management measures are effective, harmonious. Foreign currency means Enterprise coordinating development of homeopathy, well, get along with the neighbors better. (B) XX 2013 five enterprises building intrinsic safety power company goals are: unplanned outage 0 times. Class of disorders 0, 0 is equivalent forced outage rate. No personal injury accident, material and equipment accidents do not occur, no fire, no environmental pollution accident. Enterprise integrated to achieve zero cases of violation, zero accidents, zero. Quality goal is: when generating capacity 7.5 billion-kilowatt, sales of over 7.11 billion kWh, total profits of 306.6 million Yuan, . BFS+、PI、MIS、SCM Information systems infrastructure, fully integrated information system to realize information resources sharing; to expand the breadth and depth of the portal system, information system of Enterprise Management Assistant role to play; to improve the day-to-day operation and maintenance operation record of promoting causes and transfer system; to strengthen the training袋装砂井施工组织设计一.工程概况袋装砂井法是利用砂井垂直排水加固地基的方法，是在一般砂井法的基础上发展起来的一种新技术。它是在需要加固地段原地面上，平整后先填筑30cm中粗砂排水垫层，再将加工好的砂袋垂直置于软土地基中后再铺20cm厚砂垫层，然后对路基逐步填筑加载，使地基中的水分从袋装砂井中析出，通过中粗砂垫层排出路外，从而达到加速地基均匀沉降固结的目的。DS13标段线路总长1.76km，其中袋装砂井处理段长484.492m，具体里程为:1、K23+090K23+280.612段,处理宽度：9484m，长190.612m，砂井直径7cm，桩长11米，共布置袋装砂井4997个；2、K23+280.612K23+300.612段,处理宽度：84m，长20m，砂井直径7cm，桩长8米，共布置袋装砂井468个；3、K23+893.325K23+925段左幅,处理宽度：26.5m，长：31.675m, 砂井直径7cm，桩长10米，共布置袋装砂井527个；4、K23+925K23+994.053段左幅,处理宽度：26.5-21.5m，长：60.053m,砂井直径7cm，桩长7米，共布置袋装砂井673个； 6、K23+893.325K23+925段右幅,处理宽度：26.5m，长：31.675m, 砂井直径7cm，桩长10米，共布置袋装砂井527个；7、K23+925K23+994.053段右幅,处理宽度：26.5-21.5m，长：69.053m,砂井直径7cm，桩长8米，共布置袋装砂井673个；共布置袋总装砂井7865个,总延长为79346m，土工布6727.1m2，。沿线地质主要为：表层为填筑土层，浅黄色，稍湿，主要由泥岩及灰岩风化土及残积土组成；下为砂层，浅灰色，饱和，颗粒级配较均匀，含泥较约8，砂质为石英；其下为亚粘土，浅黄灰色，稍湿，可塑，局部为粉土；再下面为粉砂、砾砂、中砂层，饱和，石英质。表层填筑土及砂层、亚粘土层土质松软，有机质含量较多，成分复杂，力学性能差，含水量高，强度底。二、进度计划计划开工日期：2004年9月1日，计划完工日期：2004年9月30日，总计30天。项目里程2004年8910袋装砂井K23+090 K23+300.612k23+893.325k24+893.325三、人员、机械设备、材料情况1、人员情况表：序号人员类别人数备注1项目队长12专业工程师13技术人员24质检工程师15试验工程师16机械工程师16安全员17材料员17机械操作人员48搬运工502、主要机械设备序号机械名称规格型号单位数量1振动打桩机KM2-12000A台22自卸汽车台23挖掘机小松台14发电机150KV台25推土机台23、材料情况中粗砂:31443.96m3。编织袋:81705.5m四、施工方案及施工工艺(一). 施工准备1、 机具设备：本标段砂井处理深度为711m，总工程量为91085m，选用合理的施工机械至关重要，结合现场实际情况及施工要求采用KM2-12000A型振动式打桩机。 2、材料选定：对于处理材料中的砂及砂袋，应采用渗水率较高的中、粗砂，粒径大于0.5mm砂的含量宜占总重量的的50以上，含泥量小于3，渗透系数应大于5103cm/s。砂宜采用风干砂，不宜用潮湿砂，以免袋内砂干燥后体积减小，造成袋装砂桩缩短与砂垫层不搭接等质量事故。砂袋应采用聚丙烯或其它适用的编制料制成，抗拉强度大于7KN/m，能够承受袋内砂自重和弯曲所产生的拉力，要有一定的抗老化性能和耐环境水腐蚀性能，其渗透系数应不小于所用砂的渗透系数。二.袋装砂井的施工工艺工艺流程为：整平原地面摊铺下层砂垫层机具定位打入套管沉入砂袋拔出套管机具移位埋砂袋头摊铺上层砂垫层。1、整平原地面及砂垫层的设置清除地面上的草皮及杂物，再用土质相同的土填筑成路拱式横坡，坡度不小于3，要求平整压实，形成排水坡。在路拱上均匀铺设透水性较好的砂垫层，砂层厚度在30cm，表面应平顺，形成与路拱相同的坡度，以利于袋装砂井排出的水能迅速从该砂层中流出。2、机具定位袋装砂井布置呈正三角形，间距为1.4m和2.0m。根据袋装砂井布置范围及间距，采用小木桩或竹板准确定出每个砂井的位置，在套管入土时将其拔掉。桩机应按从低处往高处打的原则安排走行路线，要保证桩锤中心对准地面定位点，并用经纬仪控制桩锤导向架的垂直度。3、安设套管与套管打入套管顶端设有便于起吊的吊钩或吊环，并在套管上画出控制标高的刻度线，如套管需要接长，事先要试接，以达到连接平顺、密封的目的。套管吊起定位后，即可轻缓打击，入土困难时，再进行大幅震动打击，直至设计深度为止。套管打入前，在套管上放置注水用的水管，用以向套管内注水。当套管内放入砂袋时，同时注水，这样便于砂井袋就位后将套管拔出。冲水压力根据现场施工实际情况确定，但须保证拔管时，能使管底阀门顺利打开，不回带，由不至于因冲水压力过大而造成对桩底原状土扰动过大。4、砂袋运输及放入砂袋运输要用专门运输工具，严禁在地上拖拉。下放砂袋时，应在套管口设滑槽，将砂袋缓慢顺直地放入套管,防止砂袋发生扭结、缩颈、断裂和砂袋磨损。灌砂：为保证灌砂密实度，应采用灌砂机灌砂，采用吊打的方法，吊振后空袋用人工二次补灌，以免出现断桩，影响排水效果。(4)裁制砂袋:根据试打后确定的深度,考虑外露长度和两头打结长度,砂袋长度按监理要求裁制.留出长度应保证伸入砂垫层至少30cm,并不卧倒。5、振动拔管砂袋到位后，即可拔出套管，起拔时要连续缓慢进行，中途不得放松吊绳，防止因套管下落而破坏砂袋。拔管时防止砂袋回带，桩管要垂直起吊防止砂袋带出或被损坏。如出现回带，要查找原因，并补打。拔管后对桩头穿空袋用人工补灌，并扎好袋口，整理桩头。6、袋头处理套管拔出后，砂袋应露出井口30cm以上，然后将其垂直埋入砂垫层中，若有高出砂垫层部分(在满足设计孔深地情况下)可将其切除，重新扎牢袋口。7、移机施打下一根，施工时不得漏打，短断桩。7工艺要求及技术措施a. 认真熟悉施工图纸，领会设计要点。b. 清理场地，将施工范围内原地面的淤泥、树根、腐植土等不适用材料全部挖除。c. 填筑砂垫层：在平整好的场地上按设计要求和砂垫层施工要求均匀的铺设30cm砂垫层。d. 机具定位，根据设计布置的行间距采用小木桩正确定位，机具定位时要保证锤中心与地面定位在同一线上，并用经纬仪观测控制导向架的垂直度。e. 砂井灌砂不得过急，并保证砂桩的连续性，砂井内应灌中粗砂，灌砂率大于95%。f. 砂井顶部应铺设砂垫层，使与砂井联结，以利排水，砂井回填使用的中粗砂含泥量不大于3%。g. 拔套管时，若带出砂袋，则机具要重新定位，砂井要重新灌注。h. 桩机移位至下一桩位，同时及时清理套管带出的淤泥土，并用干净的砂砾回填留下的洞穴，确保排水畅通。i.砂袋灌入砂后，露天堆放应遮盖，切忌长时间曝晒，以免砂袋老化。j.导轨应垂直，钢套管不得弯曲，沉桩时应用经纬仪或垂锤控制垂直度。 k.为控制砂井的设计入土深度，在钢套管上应划出标尺，以确保井底标高符合设计要求。l.砂袋入井，应用桩架吊起垂直下井，防止砂袋发生扭结、缩颈、断裂和砂袋磨损。m. 拨出钢管时应注意垂直起吊，以防止带出或损坏砂袋。n.砂袋留出孔口长度应保证伸入砂垫层至少30CM，并不得卧倒。四砂井的质量控制及检验a. 加强对材料的管理检验，按规定做好砂子质量和含泥量的控制。b. 打设套管前要检查套管长度和直径是否与设计相符，管内有无杂物，桩尖活动门开启是否灵活，封闭是否良好。c. 施工中随时检查套管成孔位置，垂直度是否满足设计要求，并检查灌砂量是否符合理论计算值。d. 砂井质量控制及检验应符合表3的规定表3 质量控制及检验指标序号检查项目允许偏差检查频率检查方法1井位150mm1/10按中心线长度丈量2井深300mm100/100以套管上划线为准，查记录3井的垂直度1.5%1/10用经纬仪观测桩锤导向架4灌砂量5%100/100五、安全技术措施（1）施工人员必须戴安全帽。（2）打桩机电网电压低于380V应暂停施工，以保护电机。（3）施工现场所有设备、设施、安全装置、工具、配件以及个人劳保用品等必须经常进行检查，确保完好和安全使用。（4）施工场地内的一切电源、电路的安全和拆除必须由持证电工操作，电器必须严格接地、接零和使用漏电保护器。各孔用电必须分闸，严禁一闸多用。孔上电缆必须架高2.5m，严禁拖地和埋压土中。夜间施工，照明应采用12V以上的安全灯。 (六)、安全保证组织框图项目经理：张英明项目副经理：李宵辉项目总工：陈国平项目队长：张启陵安检工程师：张战喜现场安全员：李 辉现场施工员：黄 亦安全生产检查、安全生产教育培训班前安全讲话、作业班组安全管理监督(七)、质量保证组织框图项目经理： 张英明项目副经理：李宵辉项目总工：陈国平项目队长：张启陵技术主管：程剑红专业工程师：张建武现场施工员：黄亦现场质检工程师：张战喜现场试验员：李虎利测量工程师：赵江涛机械工程师：代 宾材料管理员：祝乐弦安全员： 李辉（八）、施工工艺流程图整平原地面摊铺下层砂垫层机具定位打入套管沉入砂袋拔出套管机具移位埋砂袋头摊铺上层砂垫层(九)、工程质量监理程序框图N返工进行下道工序Y返工NN返工监理工程师组织检测审核填报中间交工证书监理工程师签发中间交工证书自检合格监理办审核分项工程完工自检合格监理工程师检测签认监理工程师审批分项工程开工申请报告分项工程开工supervision in large and medium goods vehicle. A is established large vehicles and small vehicles classification management of motor vehicle test mode, increased medium van car, and dangerous goods transport car, and school car test project; II is established motor vehicle test regulatory platform, achieved motor vehicle test full process video, and data remote regulatory; three is strictly motor vehicle identification management, equipped with unified of identification equipment and tool, using mobile identification Terminal, and law enforcement records instrument, technology identification means. As to 20XX years June 20 statewide motor vehicle keep volume for 567,408 car, and last year earlier than growth 75,814 car, growth 13.36%; this year January-June, vehicles management section and license archives management section total accepted the motor vehicle registration business 42,543 car times, which registered registration 6,905 car times, and transfer registration 3,592 car times, and change registration 1033 car times, and mortgage registration 696 car times, and cancellation registration 187 car times, and into business 980 car times, and Archives corrections 81 pieces times, and issued test qualified logo 25,429 car times, and other vehicles business 3,640 car times; supervision Survey Section relies on motor vehicle detection remote issued test qualified logo software platform supervision motor vehicle test, and identification situation 7418l liangci, investigation motor vehicle exception business 30 car times, his pards business warning 244 article, vehicles and driving people sound video regulatory screenshots 1852 Zhang, checks motor vehicle archives 716 pieces times, and medium bus, and medium above truck, and Of hazardous chemicals, vehicles and school buses and other key vehicle inspection record of 420. (C) based on their own, and strict adherence to defense, more cheating, false false fugitive suspects, robbery suspect vehicles and the Internet crackdown. DMV full play to the first line of Defense position control, investigating cheating, fake identific