p回旋钻桩基技术交底书.doc
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1、Annual straw consumption is about 300 (15x20) million tons to 450 (15x30) million tonnes. Around each plant to town for curing Center straw briquette factory, about 30, curing each straw briquette factory production capacity of 10,000 tons per year, production of major products supply power plants a
2、nd the rest as ordinary fuel. Chapter III, section I industry investment analysis investment benefit analysis, industry profitability industry benchmark yield to 12%, more than a moderate level of profitability, have higher profitability. Secondly, solvency, with good profitability and, hence, have
3、enough liquidity. Three biomass energy resource in China, industry growth prospects are very experienced and bright prospects for development of biomass power generation industry. On one hand, the sown area of 1.8 billion mu of crops, the year produces 700 million tons of matter. Apart from the part
4、s used in papermaking and livestock feed, and the rest will be done fuel use. The other hand, Chinas current forest area of about 175 million hectares, the forest coverage rate of 18.21%, every year through normal Bush stumping rejuvenation, forest thinning, hedgerow fruit trees and the collection o
5、f forest felling, bucking, processing residues, biomass resources available at about 800 million to 1 billion tons. Theory of biomass energy resource in China close to 1.5 billion tons of standard coal. By 2020, the biomass energy development and utilization of capacity of 500 million tons of standa
6、rd coal, equivalent to more than 15% supplies. And extremely low sulphur content of the biomass 0.3%, 1/4 not to the sulphur content of the coal. Development of biomass solid fuels, implement coal alternatives, significantly reduces the carbon dioxide and sulfur dioxide emissions, have a significant
7、 environmental benefit. Second section industry investment opportunities for promoted health material energy of steadily development, September 2006, Treasury, and national development and Reform Committee, and Ministry of agriculture, and national tax General, and national forestry Council joint in
8、troduced has on development biological quality energy and biological chemical tax support policy of implementation views, in risk avoid and compensation, and raw materials base grants, and model grants, and tax relief, aspects for development biological quality energy and biological chemical develop
9、ed has specific of tax support policy. In addition, since the renewable energy law came into effect on January 1, 2006, making a complete set of administrative rules and regulations also promulgated. On October 4, 2006 of the Ministry of the interim measures for the administration of special funds f
10、or renewable energy development, the approach of special funds to support key, application and approval, financial management, checking and supervision of comprehensive provisions. The regulations: development of special funds established by the financial departments of the State Council, the use of
11、 special funds for the development include free grants and subsidized loans, through the central financial budget. According to the role of biomass energy and the countrys status quo, is currently focused on the development of the project are as follows: (1) recent development priorities: biomass ga
12、sification and gas, biomass gasification power generation, large biogas, biomass direct combustion heating (2) medium-and long-term development projects: height of biomass gasification power generation project (BIG/CC), the production of hydrogen from biomass such as resource in China close to 1.5 b
13、illion tons of standard coal. By 2020, the biomass energy development and utilization of capacity of 500 million tons of standard coal, equivalent to more than 15% supplies. And extremely low sulphur content of the biomass 0.3%, 1/4 not to the sulphur content of the coal. Development of biomass soli
14、d fuels, implement coal alternatives, significantly reduces the carbon dioxide and sulfur dioxide emissions, have a significant environmental benefit. Second section industry investment opportunities for promoted health material energy of steadily development, September 2006, Treasury, and national
15、development and Reform Committee, and Ministry of agriculture, and national tax General, and national forestry Council joint introduced has on development biological quality energy and biological chemical tax support policy of implementation views, in risk avoid and compensation, and raw materials b
16、ase grants, and model grants, and tax relief, aspects for development biological quality energy and biological chemical developed has specific of tax support policy. In addition, since the 技 术 交 底 书 第 页 共 页工程名称南昌枢纽西环线工程施工单位中铁十七局集团有限公司编制单位技术部技术负责人技术交底内容南昌枢纽西环线工程钻机施工技术交底各质检员、现场技术员、施工班组:一、编制依据1、铁路桥涵施工规
17、范(TB10203-2002)2、铁路桥涵工程施工质量验收标准(TB10415-2003)3、改建铁路南昌枢纽新建西环线工程施工图沙田赣江特大桥设计图4、铁路工程地质勘察规范(TB10012-2001)5、铁路桥涵施工技术安全规则TBJ403-87二、概述沙田赣江特大桥为全线的控制性工程,桥梁跨越赣江、赣江大堤、富山大道以及南昌县小蓝经济开发区规划道路。全桥共244个墩台,桥梁基础采用钻孔灌注桩基础,桩基的直径为1000mm、1250、1500mm、1800mm和2000mm,混凝土的设计标号为C30水下混凝土。三、钻孔桩施工工艺流程(一)水中:施工准备建立钻孔施工平台插打钢护筒布设泥浆池安装
18、钻机、钻孔成孔、检孔换浆、清孔安装钢筋笼、导管二次清孔填充水下混凝土桩身混凝土质量检查。(二)陆地:施工准备(筑岛)建立施工平台埋设钢护筒安装钻机、钻孔成孔、检孔换浆、清孔安装钢筋笼、导管二次清孔填充水下混凝土、养护桩身混凝土质量检查。编制: 复核: 日期:技 术 交 底 书 第 页 共 页工程名称南昌枢纽西环线工程施工单位中铁十七局集团有限公司编制单位技术部技术负责人技术交底内容南昌枢纽西环线工程钻机施工技术交底四、钻孔桩准备工作(一)前期准备清理钻机所需的各项机具设备的数量和配件是否齐全,电气性能是否完好,使用时,应派专人经常检查、维护,确保钻机良好的工作状态。旋转钻机主要由钻架、转盘、水
19、龙头及滑轮组、卷扬机及回转装置组成。在组拼、使用过程一定要先熟悉每一钻机的各种性能,严格按照钻机使用说明书进行。使用前,应对钻机进行全面检查:1、钻机转盘和变速箱,检查轴承和齿轮,并注好润滑油;2、转盘电机,转盘油循环小电机、卷扬机、电机等都应测其绝缘程度;3、卷扬机的弹簧和刹车应进行检查;4、滑轮组及导向滑轮应注好黄油,使其运转灵活;5、对控制系统进行检查,控制系统应选用可靠的元器件;6、检查钻杆有无变形,清除内外浮锈;7、气室应打开检查并清理干净;8、钻机钻杆组拼完后,检查法兰盘接头处是否有较大变形,调整好后,丈量长度,钻杆编号,记录。编制: 复核: 日期: 技 术 交 底 书 第 页 共
20、 页 工程名称南昌枢纽西环线工程施工单位中铁十七局集团有限公司编制单位技术部技术负责人技术交底内容南昌枢纽西环线工程钻机施工技术交底(二)栈桥施工 由于沙田赣江特大桥桥型结构复杂,线路较长,部分桥墩位于赣江中,因而修建一座满足施工要求的施工栈桥尤其重要;该栈桥既要作为施工通道、又要作为施工作业平台,是整个桥梁施工中的交通枢纽和进行其他施工作业的前提,因而对其荷载要求也相应提高;1、基本结构尺寸:(1)、标准跨度9m,桥宽6m,三跨一联;(2)、桥墩采用单排2根6308mm钢管桩,联端设制动墩,4根钢管桩加设纵横向联结系组成,同一排钢管桩间采用18槽钢进行交叉连接;(3)、横梁采用2I36a工字
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