袋装砂井施工组织设计.doc
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1、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 sy
2、stem, 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
3、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. In
4、novation 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
5、 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
6、 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 harmoni
7、ous 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 n
8、eighbors 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 acciden
9、t. 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 s
10、ystem 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 tr
11、aining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、K
12、23+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+994.0
13、53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,
14、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
15、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
16、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
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