搜索
目录1.概述·················································································１1.1.工程概况··································································１1.2.编制依据··································································２1.3.坝体填筑料主要工程量及技术要求··································２2.施工布置···········································································４2.1.施工道路的布置·························································４2.2.施工用水、电布置······················································５2.3.主坝上游基坑排水布置················································５3.坝体填筑施工·····································································６3.1.坝体填筑原则····························································６3.2.大坝填筑施工工艺及坝面划分原则··································７3.3.坝料开采加工与平衡···················································９3.4.坝料运输·······························································１２3.5.基础面清理及验收···················································１２3.6.过渡(反滤料)填筑····················································１３3.7.全强风化料填筑······················································１４3.8.排水料填筑····························································１６3.9.特殊部位结合面处理················································１６3.10.干砌石护坡的施工··················································１８3.11.沥青心墙施工························································１８4.雨季施工········································································１９4.1.雨季施工措施·························································１９4.2.其它控制措施·························································２０4.3.雨期坝面排水措施···················································２０5.施工安全及质量保证措施···················································２１5.1.安全保证措施·························································２１5.2.施工准备阶段质量保证措施·······································２２5.3.坝体填筑过程质量保证措施·······································２４5.4.总体质量保证措施···················································２６5.5.各类坝料填筑检查项目及取样次数、控制标准和碾压机械技术性能················································································２８5.6.坝体质量控制关键点················································２８6.施工进度计划及工期保证措施·············································３０２6.1.施工进度计划·························································３０6.2.施工强度分析·························································３０6.3.工期保证措施·························································３２7.资源配置········································································３３7.1.管理人员配置·························································３３7.2.劳动力安排····························································３４7.3.施工机械设备的配置················································３４8.安全文明生产及环境保护措施·············································３５8.1.料场·····································································３５8.2.坝料运输·······························································３５8.3.坝料填筑·······························································３６9.强制性条文·····································································３７１1.概述1.1.工程概况水库地处，主要建筑物有主坝和溢洪道。主、副坝均采用沥青混凝土心墙土石坝，主坝顶高程m，最大坝高30.0m；主坝右岸设自溢竖井式溢洪道，结合导流洞改造而成。上水库正常蓄水位m，死水位m，调节库容m3，死库容万m3，总库容m3。坝顶宽度8.0m。坝顶上游设防浪墙，下游设L型挡墙。大坝上游坝坡为1:30；下游坝坡为1:2.7，高程555.00m处设一马道，马道宽度为4m。沥青混凝土心墙位于大坝上游侧，心墙中心桩号坝0+002.200m，为厚0.5m的等厚心墙。当沥青混凝土心墙部位坝基全风化层厚度大于5m时，采用混凝土防渗墙连接；对于主坝右岸全强风化较薄部位，采用混凝土基座连接，基础开挖至弱风化基岩。沥青混凝土心墙采用底部端头加厚平接方式，接触面设沥青马蹄脂及一道铜止水。坝体填筑料分区从上游至下游依次为：干砌块石护坡、碎石垫层、上游全强风化料区、上游过渡区、沥青混凝土心墙、下游过渡区、下游全强风化料区和下游坝面草皮护坡，心墙上下游过渡层水平宽度均为2.0m。另外下游坝基清坡后设0.5m厚的中砂反滤层，反滤层与全强风化料间设2.0m厚碎石层，作为下游坝体排水体。上游护坡区：上游边坡设一级坡，坡比为1∶3.0，采用干砌块石护坡。干砌块石层厚0.5m，石料粒径30cm～50cm；其底部为级配碎石垫层兼反滤层，厚度0.5m，石料粒径为0.5cm～8cm。护坡所需石料均从石料场取料，为新鲜花岗岩，其中碎石料由人工扎制而成。２1.2.编制依据⑴、坝体填筑要求：《沥青混凝土心墙土石坝填筑施工技术要求》；⑵、设计图纸；⑶、《土建工程施工技术条款》；⑷、《碾压式土石坝施工规范》（DL/T5129-2001）。⑸、《水工碾压式沥青混凝土施工规范》（DL/T5363-2006）。1.3.坝体填筑料主要工程量及技术要求1、坝体填筑主要工程量见下表坝体填筑主要工程量序号部位坝料名称单位方量备注1上水库沥青混凝土m3厚50cm2坝体全强风化料m3中粒径花岗岩全、强风化料，块石最大粒径小于300mm3过渡料级配碎石料m3沥青混凝土心墙两侧过渡料、粒径小于80mm的级配碎石4下游坝基垫层料级配碎石料m3下游坝基排水垫层料、粒径小于40mm的级配碎石5级配中砂反滤料m3下游坝基反滤层、粒径小于5mm的级配中砂6上游坝坡垫层料级配碎石料m3上游坝坡护坡垫层料、粒径为5~80mm的级配碎石7上游坝坡干砌石m3石料粒径均值30cm~50cm新鲜花岗岩2、填坝料施工质量控制要求1）、上、下游全强风化料区：全强风化料采用上水库进出水口、溢洪道、库岸防护、备用料场等建筑物开挖土石料。全风化料碾压后强度指标要求干容重不小于1.68t/m3，强风化料碾压后强度指标要求干容重不小于３1.91t/m3。设计上、下游全强风化区填筑料级配见下表强风化花岗岩填筑料级配表粒径范围(mm)300~200200~100100~8080~6060~4040~2020~1010~550.075占总重百分比(%)20267781075101粒径小于5mm全风化花岗岩填筑料级配表粒径范围(mm)5~22~0.50.5~0.250.25~0.0750.075~0.0050.005占总重百分比(%)3426.24.95.911182）、过渡料：为沥青混凝土心墙两边提供均匀支撑，满足心墙与坝壳料之间变形的过渡要求，且具有良好的排水性和渗透稳定性，满足施工要求的承载力。过渡料由新鲜花岗岩人工扎制而成，最大粒径为80mm，小于5mm粒径含量为25%～40%，小于0.075mm粒径含量不超过5%，级配连续，碾压后强度指标要求干容重不小于2.15t/m3。设计过渡料级配见下表过渡料级配表粒径范围(mm)80~6060~4040~2020~1010~550.075占总重百分比(%)上包线410161515405平均线1112171512.532.53下包线18141815102513）、中砂反滤层坝基清理后，在坝基与排水体之间设0.5m厚的中砂反滤层。碾压后要求干容重2.21t/m3。设计中砂反滤层级配见下表中砂级配表粒径范围(mm)55~2.52.5~1.251.25~0.630.63~0.3150.315~0.160.16占总重百分比(%)2.918.915.122.217.98.314.64）、排水碎石采用扎制的人工碎石料，为弱风化~新鲜石料，最大粒径为40mm。碾压４后要求干容重2.18t/m³。设计排水碎石典型级配见表。排水碎石级配表粒径范围(mm)40~3030~2020~1010~5占总重百分比(%)252030255）、护坡干