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四川大渡河沙湾水电站尾水渠项目工程-----------------监理规划四川大渡河沙湾水电站尾水渠项目工程监理规划四川大桥水电咨询监理有限责任公司四川大渡河沙湾水电站尾水渠项目工程监理部2005年11月四川大渡河沙湾水电站尾水渠项目工程-----------------监理规划审核：陈道和审查：毕晋编写：毕晋兰红才四川大渡河沙湾水电站尾水渠项目工程-----------------监理规划目录1工程概况1.1工程所在位置及基本概况·········································11.2气象、水文·····················································41.3基本地质条件···················································102监理范围及内容2.1监理范围························································162.2监理内容························································173监理机构应向发包人提供的信息和文件4监理目标控制4.1监理工作依据····················································204.2主要监理目标····················································215工程项目监理措施5.1进度控制措施···················································235.2质量控制措施····················································235.3工地试验························································385.4投资控制措施····················································395.5合同管理························································395.6信息管理························································405.7咨询····························································406组织机构及职责分工6.1监理组织机构····················································406.2监理工程师岗位职责··············································417项目监理工作管理制度7.1监理项目策划制度················································487.2监理的准备工作制度··············································497.3工程质量监理措施管理制度········································507.4设计文件和质量标准的控制制度···································517.5现场设计交底制度················································527.6施工准备工作检查认可制度·······································527.7施工控制测量及其成果核认制度···································53四川大渡河沙湾水电站尾水渠项目工程-----------------监理规划7.8开工申报审批制度···············································547.9施工过程质量监督制度···········································547.10施工质量检验和试验制度········································557.11工程质量事故处理制度··········································577.12工程验收工作制度···············································577.13安全文明生产制度··············································577.14施工进度的监理与报告制度······································587.15工程投资监控制度···············································587.16工地会议制度···················································597.17合同管理制度···················································607.18监理月报制度···················································607.19监理日志制度···················································607.20监理例会制度···················································607.21工程资料及档案管理制度·········································607.22监理部内部管理制度·············································617.23项目管理接口关系··············································617.24监理质量体系控制文件···········································627.25监理工程师职业准则和行为规范···································628工程进度、质量、费用控制措施及合同信息管理8.1进度控制措施····················································638.2质量控制措施····················································638.3工地试验························································658.4投资控制措施····················································668.5合同管理························································668.6信息管理························································67四川大渡河沙湾水电站尾水渠项目工程监理组织机构图···················68四川大渡河沙湾水电站尾水渠项目工程-----------------监理规划四川大渡河沙湾水电站尾水渠项目工程监理规划1工程概况1.1工程所在位置及基本概况沙湾水电站枢纽工程位于四川省乐山市沙湾区葫芦镇河段，距葫芦镇上游约1.0km，为大渡河干流下游梯级开发中的第一级，枢纽区上游11.5km为已建的铜街子电站，下游为规划的安谷电站，枢纽区距乐山市城区44.5km，成昆铁路在本电站下游约7.0km处之轸溪车站通过。坝址区有省道103线通过，交通条件方便，地理位置优越。该工程以发电为主，兼顾灌溉功能。电站装机容量480MW，额定水头24.5m，正常蓄水位432.0m，设计引用流量2203.2m3/s，保证出力151MW，年利用小时数5015h，年发电量24.07亿kW·h。总库容4554万m3。坝轴线长699.82m，采用一级混合开发方式，既建坝壅水高15.5m，与铜街子尾水相衔接，河床式厂房，厂后接长9015m的尾水渠，尾水渠利用落差14.5m。1.1.1.尾水渠建筑物组成尾水渠全长9015.0m，尾水渠出口拟在祝湾坝下游约500m河段。在尾0+000.00至0+300.00m范围内，尾水渠采用混凝土衡重式挡墙，与面板式堤身扭面衔接，尾水渠左堤出口顶冲段，采用钢筋混凝土护坡式裹头保护，渠底出口以1:308.93的反坡与天然河道相衔接，反坡长405.28m，出口处渠底最大宽度170m，河床高程400.01m，相对于发电流量2203.2m3/s，河床水位405.28m；渠外侧（左堤）根据电站以及水库运行调度要求，尾水渠在大于5000m3/s时参与河道行洪，溢流段的位置、长度、高程由模型试验按修建工程后，河床各频率洪水位均不高于天然情况30cm为原则确定，尾1+000.0～1+700.0m段堤顶高程以5000m3/s的停机流量确定；以100年一遇洪水位确定其余段堤顶高程。渠内侧（右岸），在桩号尾2+200～4+200m、尾5+500～6+700m左右，分别分布有谭坝、李坝以及沫江村等乡、村，其中，谭坝、李坝需要保护的范围内有人口1200人、耕地1047亩；沫江村需要保护的范围内有人口576人、耕地412亩，原防洪标准不到五年一遇。考虑永久公路以及局部乡、村的保护要求，根据工程实际情况，防洪标准同左堤；尾水渠以电站厂房出水口反坡段末作为尾0+000点，底板高程398.23m，比降1/8000。电站正常发电引用流量Q＝2203.2m3/s，尾水渠正常水深8.12m，流速2.64m/s；电站最小发电引用流量Q＝550.8m3/s，尾水渠最小水四川大渡河沙湾水电站尾水渠项目工程-----------------监理规划深5.31m，流速0.95m/s，满足不冲不淤流速要求。1.1.2.尾水渠结构布置（1）断面及衬砌型式尾水渠主要沿右侧河床接近岸边走向为其线路，局部经过河流漫滩、心滩、一、二级阶地等地貌，根据沿渠地面高程，尾水渠开挖深度10～30m，渠道部分基础为基岩，上面为砂卵石覆盖层。依据地质建议，选用天然稳定边坡的梯形断面，渠堤边坡坡比1:1.60。根据电站正常发电引用流量Q＝2203.2m3/s，经过水力学计算，尾水渠正常水深8.12m，底宽91m，电站最小发电引用流量Q=550.8m3/s，尾水渠最小水深5.31m。在尾0+000.00～尾0+300.00由于局部开挖较深，高度较大，采用砼衡重式挡墙和面板式护坡扭面衔接，由于基底砂卵石覆盖层透水性较大，设计采用高压旋喷灌浆进行防渗处理，防渗墙穿过岩溶角砾岩后，深入泥质白云岩或灰岩1m。尾水渠外侧（左堤）根据电站以及水库运行调度要求，尾水渠在大于5000m3/s时参与河道行洪，因此，左堤在桩号尾1+000.0m至1+700.0m范围内以5000m3/s的停机流量确定堤顶高程，其顶部左侧有1m的直立墙，右侧为圆弧型，圆弧半径2.0m，本段衬砌左侧为60cm厚C20钢筋砼面板、右侧为40cm厚C20钢筋砼面板、底板为30cm厚C15钢筋砼；其余段堤顶高程以100年一遇洪水位确定，部分建基于砂卵石覆盖层上，堤身采用混凝土面板砂卵石填筑结构，其左堤的左侧、右侧、底板以及右堤一级马道以下分别以50cm厚C20钢筋