溶洞注浆处理技术交底

is responsible for Organization training and implementation and check 12 master workshops annual economic indicators of implementation reporting to financial health on a regular basis 13 is responsible for the daily oversight in the allocation and use of funds 14 responsible for all Department statistics collecting sorting reporting of accounting reports 15 the company responsible for the supervision of the Treasury including the third grade library a library of materials products for regular inventory handling sampling storage monitoring the picking work and provide the inventory report and make the appropriate accounting treatment 16 responsible for waste and recycling transportation and settlement 17 is responsible for all product sales accounting functions 18 responsible for the company s raw materials auxiliary materials account management 19 is responsible for the flow of control of all assets of the company according to the changes in accounting treatment of fixed assets and assets to the departments responsible for clearing settlement and asset monthly report submitted to the asset management section of the Finance Department of the company organized on a company wide special inspection of asset management 20 according to the company s business activities monthly projects involved in the business activities of the company including expenses business management cost control cash flow revenue etc financial analysis provide a basis for decisions for the company the business of the company responsible for monitoring forecasting and risk analysis 21 responsible for the settlement of transactions with the Bank 22 is 广州地铁 技术交底记录 D1 4 工程名称 广州市轨道交通三号线 北延 12 标 矮岗站 土建工程 分部工程施工准备 分 项 工程名称 溶洞充填注浆处理 技术交底内容 一 溶洞分布情况一 溶洞分布情况 根据地质补勘资料 矮岗站及站后折返线施工区域内的石灰岩地层存在岩溶溶洞 等不良地质情况 溶洞分布及相应施工钻孔如下表 表表 1 1 溶洞分布及相应施工钻孔布置溶洞分布及相应施工钻孔布置 溶洞编号 勘察孔 编号 物探推测分布面积 m m 埋深范围 m m 灌浆孔 130 个 补 1待测定 17 10 17 80m 待定 补 1 加 2待测定 16 90 18 40 待定溶洞 1 补 1 加 4待测定 16 80 18 30 待定 说明 正在进行补勘加密孔补 1 加 3 加 4 孔的钻探 以对该地段溶洞的发育 分布 情况作进一步分析认定 2007 年 12 月 19 日 广州地铁三号线北延段岩溶处理专家组专题会议 上对溶洞 处理提出指导意见 1 灰岩岩面在明挖基坑边线平面位置 3m 竖向结构底板以下 10m 范围内属于高风险地带 所在范围内的岩溶溶洞必须进行注浆处理 2 注浆方式 岩溶溶洞周边采用双液浆 中部采用单液浆 先在周边注浆形成帷幕堵住其地下水通 道 再对中心地带注浆 3 注浆孔平面分布按照 2000mm 2000mm 网格状控制整个溶 洞的大小 4 充填注浆处理须在围护结构和主体施工之前进行 现根据上述要求和有关地质的勘察资料 补充勘察资料以及设计图纸要求制定溶 洞处理措施 二 溶洞处理二 溶洞处理 2 12 1 溶洞处理目的溶洞处理目的 2 1 1 通过对溶洞处理 确保围护结构和主体施工安全 避免沉陷等意外事故的 发生 2 1 2 溶洞填充物和灰岩地层承载力有很大的差别 通过对地层处理 提高该处 地层的承载力 减小不同地层之间的差异沉降 2 22 2 施工方法施工方法 溶洞处理施工可分为两步 充填压密 灌浆 is responsible for Organization training and implementation and check 12 master workshops annual economic indicators of implementation reporting to financial health on a regular basis 13 is responsible for the daily oversight in the allocation and use of funds 14 responsible for all Department statistics collecting sorting reporting of accounting reports 15 the company responsible for the supervision of the Treasury including the third grade library a library of materials products for regular inventory handling sampling storage monitoring the picking work and provide the inventory report and make the appropriate accounting treatment 16 responsible for waste and recycling transportation and settlement 17 is responsible for all product sales accounting functions 18 responsible for the company s raw materials auxiliary materials account management 19 is responsible for the flow of control of all assets of the company according to the changes in accounting treatment of fixed assets and assets to the departments responsible for clearing settlement and asset monthly report submitted to the asset management section of the Finance Department of the company organized on a company wide special inspection of asset management 20 according to the company s business activities monthly projects involved in the business activities of the company including expenses business management cost control cash flow revenue etc financial analysis provide a basis for decisions for the company the business of the company responsible for monitoring forecasting and risk analysis 21 responsible for the settlement of transactions with the Bank 22 is 溶洞灌浆采用袖阀管注浆加固法 袖阀管采用 50 PVC 管 管壁厚 4mm 耐压值 7 5MPa 袖阀管下到溶洞底面 在溶洞段的管壁上钻 6 300 花眼作为出浆孔 外包橡皮箍作为单向阀 对于高度 0 2m 的溶洞 把送浆管直接连通袖阀管 对溶洞 内的充填物进行压力注浆 对于高度 2m 以上的溶洞 在袖阀管内下入双塞芯管 对 溶洞内的充填物分层进行压力注浆 分层厚度为 0 5 1 0m 溶洞 加密钻孔 不注浆 溶洞假定边界线 加密钻孔平面布置示意图 补勘钻孔 注浆孔 注浆孔 图图 1 1 钻孔平面布置示意图钻孔平面布置示意图 地面 溶洞 溶洞边线 填充物 填充物 注浆孔 注浆孔 结构边线 溶洞 不注浆孔 不注浆孔 图图 2 2 钻孔立面布置示意图钻孔立面布置示意图 2 32 3 充填材料 灌浆参数的选择充填材料 灌浆参数的选择 钻孔平面布置间距为 2m 钻孔直径 一般灌浆孔直径为 90mm is responsible for Organization training and implementation and check 12 master workshops annual economic indicators of implementation reporting to financial health on a regular basis 13 is responsible for the daily oversight in the allocation and use of funds 14 responsible for all Department statistics collecting sorting reporting of accounting reports 15 the company responsible for the supervision of the Treasury including the third grade library a library of materials products for regular inventory handling sampling storage monitoring the picking work and provide the inventory report and make the appropriate accounting treatment 16 responsible for waste and recycling transportation and settlement 17 is responsible for all product sales accounting functions 18 responsible for the company s raw materials auxiliary materials account management 19 is responsible for the flow of control of all assets of the company according to the changes in accounting treatment of fixed assets and assets to the departments responsible for clearing settlement and asset monthly report submitted to the asset management section of the Finance Department of the company organized on a company wide special inspection of asset management 20 according to the company s business activities monthly projects involved in the business activities of the company including expenses business management cost control cash flow revenue etc financial analysis provide a basis for decisions for the company the business of the company responsible for monitoring forecasting and risk analysis 21 responsible for the settlement of transactions with the Bank 22 is 灌浆材料 采用 32 5R 级普通硅酸盐水泥 溶洞周边孔注双液浆 中部孔注单液 浆 袖阀管套壳料 水泥 粘土 水 1 1 5 1 88 重量比 固管料为单液水泥浆 配比为 水 水泥 1 1 5 袖阀管注浆的浆液配比 水泥 水 1 1 0 5 1 先稀浆后稠浆 注浆速度 30 70L min 注浆压力 0 4 2 0Mpa 灌浆终止压力 1 5 2 0Mpa 如发现地下有水流通道 孔内漏浆严重时 可掺入适量的的水玻璃作为速凝剂 水泥浆与水玻璃体积比 C S 1 0 5 1 其中 水玻璃 浓度为 45Be 模数 n 2 4 2 8 2 42 4 灌浆设备的选型灌浆设备的选型 采用 BW 150 型注浆机 设置回浆管路和溢流阀 注浆泵主要性能要求 流量 80L min 最大压力 4 5MPa 动力 11KW 重量 300kg 浆液搅拌采用自制的 450L 快速 搅拌筒 转速 250r min 制浆量为 6 10m3 h 灌浆管采用 32 2 5 无缝钢管和 32 五层高压钢丝编织胶管 工作压力为 9MPa 2 52 5 浆液搅拌站 泵站设置浆液搅拌站 泵站设置 现场设水泥浆搅拌站集中供浆 集中制浆站宜制备纯水泥浆液 铺设 50 镀锌铁 管输送至各灌浆点 输送泵采用 BW 250 浆泵 各灌浆点设移动式搅拌筒 灌浆泵设 备 在测定来浆密度后调制使用 浆泵站布置在交通便利 高程适中的平地上 并且紧邻水泥仓 以便于材料供应 送浆管路不宜过长 以减小输浆管路的压力损失 记录仪 灌浆孔 搅动槽 注浆泵 记录仪 灌浆孔 搅动槽 注浆泵 水泥仓 灌浆孔 记水器 搅动槽 记录仪 注浆泵 水泵 储水池 搅拌机 搅动槽 输浆泵 记浆器 图图 3 3 灌浆施工平面布置示意图灌浆施工平面布置示意图 is responsible for Organization training and implementation and check 12 master workshops annual economic indicators of implementation reporting to financial health on a regular basis 13 is responsible for the daily oversight in the allocation and use of funds 14 responsible for all Department statistics collecting sorting reporting of accounting reports 15 the company responsible for the supervision of the Treasury including the third grade library a library of materials products for regular inventory handling sampling storage monitoring the picking work and provide the inventory report and make the appropriate accounting treatment 16 responsible for waste and recycling transportation and settlement 17 is responsible for all product sales accounting functions 18 responsible for the company s raw materials auxiliary materials account management 19 is responsible for the flow of control of all assets of the company according to the changes in accounting treatment of fixed assets and assets to the departments responsible for clearing settlement and asset monthly report submitted to the asset management section of the Finance Department of the company organized on a company wide special inspection of asset management 20 according to the company s business activities monthly projects involved in the business activities of the company including expenses business management cost control cash flow revenue etc financial analysis provide a basis for decisions for the company the business of the company responsible for monitoring forecasting and risk analysis 21 responsible for the settlement of transactions with the Bank 22 is 2 62 6 施工顺序施工顺序 整体施工顺序 按施工进展方向 溶洞分布里程 划分成多个工点依次展开施工 单个工点施工顺序 按溶洞发育情况 划分成多个溶洞加固区 同时展开施工 单个溶洞加固区施工顺序 钻孔顺序 先钻中心孔 由内向外逐步扩大钻孔探查范围 单个溶洞范围内的多个钻孔都完成 查明溶洞的大小后再进行压力灌浆 每个钻孔完成后 随即安装袖阀灌浆管 灌浆顺序 由外向内进行 先对溶洞边界 加固范围线 上的钻孔进行充填灌 浆 阻断浆液漏失通道后 再逐步加密灌浆孔 进行溶洞区中部的灌浆压密 2 72 7 溶洞灌浆技术措施溶洞灌浆技术措施 2 7 12 7 1 钻孔钻孔 1 成孔设备和钻进方法的选择 选用 XY 100 型钻机 针对较软土层采用合金钻具回转钻进方法成孔 针对硬土层 和破碎岩层采用风动潜孔锤冲击钻进 2 钻机安装 底座水平 机身稳固可靠 调整钻机高度 立轴对正孔位 将钻具放入孔口管内 使孔口管 立轴和钻杆在一条直线上 用罗盘 水平尺和辅助线检测立轴方向和倾斜 角度 3 钻孔护壁 采用优质稀泥浆护壁 当砂层较厚 孔内容易出现塌孔时 用 108mm 套管护孔 待孔内注入套壳料并下入袖阀管后 再将 108mm 套管提出孔外 4 钻孔注意下事项 钻孔布置须避开地下管线和既有建筑物基础 2 7 22 7 2 安装袖阀管 浇注套壳料及固管止浆安装袖阀管 浇注套壳料及固管止浆 1 钻孔至设计深度后并采用清水洗孔后 立即将套壳料通过钻杆泵送至孔底 自下而上灌注套壳料至孔口 直至溢出符合浓度要求的原浆液为止 2 依次下入按注浆段配备的袖阀花管和芯管 下管时及时向管内加入清水 克服孔内浮力 顺畅下入至孔底 3 套壳料采用粘土和水泥配制 配比范围为水泥 粘土 水 1 1 5 1 88 浆 液比重约为 1 5 漏斗粘度 24 26s 实际施工时应通过多组室内及现场试验 选取最 is responsible for Organization training and implementation and check 12 master workshops annual economic indicators of implementation reporting to financial health on a regular basis 13 is responsible for the daily oversight in the allocation and use of funds 14 responsible for all Department statistics collecting sorting reporting of accounting reports 15 the company responsible for the supervision of the Treasury including the third grade library a library of materials products for regular inventory handling sampling storage monitoring the picking work and provide the inventory report and make the appropriate accounting treatment 16 responsible for waste and recycling transportation and settlement 17 is responsible for all product sales accounting functions 18 responsible for the company s raw materials auxiliary materials account management 19 is responsible for the flow of control of all assets of the company according to the changes in accounting treatment of fixed assets and assets to the departments responsible for clearing settlement and asset monthly report submitted to the asset management section of the Finance Department of the company organized on a company wide special inspection of asset management 20 according to the company s business activities monthly projects involved in the business activities of the company including expenses business management cost control cash flow revenue etc financial analysis provide a basis for decisions for the company the business of the company responsible for monitoring forecasting and risk analysis 21 responsible for the settlement of transactions with the Bank 22 is 佳配比 根据工程中的要求 套壳料凝固时间和强度增长速率应控制在 2 5d 内可灌 浆 4 袖阀外花管采用 50 的聚氯乙烯塑料管 在管子注浆段上每隔 30cm 钻一 排 3 4 个 孔眼 孔眼直径 6mm 针对每排孔眼 在管子外面套上一段长 10cm 厚 1 2mm 紧贴的橡皮箍并加以固定 5 固管止浆 在袖阀管外花管与孔壁之间的环状间隙处下入注浆管 在孔口 上部 2m 孔段压入止浆固管料 直至孔口返止浓浆为止 止浆固管料采用速凝水泥浆 水 水泥 1 1 5 可采用水玻璃或氯化钙作速凝剂 2 7 32 7 3 待凝待凝 要待孔口段止浆料凝固后才能灌浆 待凝时间控制在 2 5d 以内 2 7 42 7 4 开环灌浆开环灌浆 开环 灌浆的前期阶段 使用稀浆 或清水 加压开环 在加压过程中 一 旦出现压力突降 进浆量剧增 表示已经 开环 开环后即按设计配比开始正式注 浆 灌浆 采用双栓塞心管进行灌浆 根据各组注浆参数表要求 从孔底自下而 上进行注浆 每排孔眼作为一个灌浆段 段长为 100cm 注浆液采用 32 5R 普硅水泥 注浆时按先灌入稀浆后灌入浓浆的原则逐渐调 整水灰比 开环压力为 0 35MPa 正常注浆压力为 0 4 0 8MPa 注浆压力控制在 0 4 2 0MPa 以内 并由下而上逐渐减小 视具体情况分别采用或作适当调整 注浆次序 注浆采用跳孔施工 以防发生串浆现象 间歇注浆 全孔段注浆完成后 间歇一段时间再进行第二次注浆 间歇时间 控制在 10 30min 之内 2 7 52 7 5 终灌标准终灌标准 当地层中有了足够的注入浆量且注入量小于 15L 分钟时 当注浆压力达到设计值或超过 2MPa 无法注入时 发现被加固建筑物有上抬的趋势时 立即停止注浆 发生串浆或浆液漏失严重时 立即停止注浆 2 7 62 7 6 后备注浆措施后备注浆措施 每孔注完浆后 用 20 水管插入袖阀管内 泵入清水把袖阀管内残留水泥浆冲洗 干净 以备复注 2 82 8 特殊情况处理特殊情况处理 is responsible for Organization training and implementation and check 12 master workshops annual economic indicators of implementation reporting to financial health on a regular basis 13 is responsible for the daily oversight in the allocation and use of funds 14 responsible for all Department statistics collecting sorting reporting of accounting reports 15 the company responsible for the supervision of the Treasury including the third grade library a library of materials products for regular inventory handling sampling storage monitoring the picking work and provide the inventory report and make the appropriate accounting treatment 16 responsible for waste and recycling transportation and settlement 17 is responsible for all product sales accounting functions 18 responsible for the company s raw materials auxiliary materials account management 19 is responsible for the flow of control of all assets of the company according to the changes in accounting treatment of fixed assets and assets to the departments responsible for clearing settlement and asset monthly report submitted to the asset management section of the Finance Department of the company organized on a company wide special inspection of asset management 20 according to the company s business activities monthly projects involved in the business activities of the company including expenses business management cost control cash flow revenue etc financial analysis provide a basis for decisions for the company the business of the company responsible for monitoring forecasting and risk analysis 21 responsible for the settlement of transactions with the Bank 22 is 灌浆工作必须连续进行 若因故中断 可按照下述原则进行处理 2 8 1 应及早恢复灌浆 否则应立即冲洗袖阀管 而后恢复灌浆 2 8 2 若无法冲洗或冲洗无效 则应进行扫孔 而后恢复灌浆 2 8 3 恢复灌浆时 应使用开灌比级的水泥浆进行灌注 如注入率与中断前的相近 即可改用中断前比级的水泥浆继续灌注 如注入率较中断前的减少较多 则浆液应逐 级加浓继续灌注 2 8 4 恢复灌浆后 如注入率较中断前的减少很多 且在短时间内停止吸浆 应采 取补救措施 灌浆过程中 发现冒浆 应根据具体情况采用嵌缝 表面封堵 低压 浓浆 限 流 限量 间歇灌浆等方法进行处理 三三 总体施工部署总体施工部署 3 13 1 工期安排工期安排 计划溶洞充填注浆处理所需总工期为 35d 施工期间可根据工程进度需要 适当 增减施工设备 人员的投入 以满足工期要求 工程施工控制指标见下表 表表 2 2 施工进度指标表施工进度指标表 序号项目进度指标 每天 工作日 1 90 钻孔施工2 孔 2 灌浆施工 150m3 4 3 23 2 设备 机械配置计划设备 机械配置计划 表表 3 3 主要施工机械 设备配置表主要施工机械 设备配置表 序号设备名称数量 台套 规格型号主要工作性能指标 一钻孔设备 1 钻机 3XY 100 直孔钻进 2 泥浆泵 3BW 50 二灌浆设备 3 灌浆泵 2BW 150 4 搅浆机 2450L4 5 KW 3 33 3 施工人员的配备施工人员的配备 表表 4 4 施工作业人员一览表施工作业人员一览表 工作类别工作类别配备人数配备人数备注备注 施工队长 1 配备一名施工班长 专业技术人员 1 材料员 1 焊工 1 配备一名施工班长 钻孔班20 人配备一名施工班长 注浆班15 人配备一名施工班长 杂工5 人配备一名施工班长 3 43 4 材料计划材料计划 is responsible for Organization training and implementation and check 12 master workshops annual economic indicators of implementation reporting to financial health on a regular basis 13 is responsible for the daily oversight in the allocation and use of funds 14 responsible for all Department statistics collecting sorting reporting of accounting reports 15 the company responsible for the supervision of the Treasury including the third grade library a library of materials products for regular inventory handling sampling storage monitoring the picking work and provide the inventory report and make the appropriate accounting treatment 16 responsible for waste and recycling transportation and settlement 17 is responsible for all product sales accounting functions 18 responsible for the company s raw materials auxiliary materials account management 19 is responsible for the flow of control of all assets of the company according to the changes in accounting treatment of fixed assets and assets to the departments responsible for clearing settlement and asset monthly report submitted to the asset management section of the Finance Department of the company organized on a company wide special inspection of asset management 20 according to the company s business activities monthly projects involved in the business activities of the company including expenses business management cost control cash flow revenue etc financial analysis provide a basis for decisions for the company the business of the company responsible for monitoring forecasting and risk analysis 21 responsible for the settlement of transactions with the Bank 22 is 按实际发生数量为准 使用的材料为 水泥 速凝剂和 PVC 袖阀管 四 灌浆质量保证措施四 灌浆质量保证措施 严格执行公司制定的技术管理制度和技术岗位制度 加强全面质量管理 建立健 全全面质量检查监督机制和施工过程质量保证体系 采用 信息管理 动态施工 的 科学施工方法 确保工程保质 保量 按时完成 4 1 按施工方案做好各项施工前的准备工作 4 2 做好技术交底工作 工程项目技术负责人对施工员 机组队长进行技术交底 确保施工按方案要求进行 4 3 做好各种施工机械的保养 检修工作 保证施工过程中机械设备的正常运转 4 4 根据设计图纸测放出注浆孔位 开工前专人复核检查 4 5 严格掌握好水泥用量 注浆施工时 应尽量保证各孔注浆量均衡 4 6 钻孔机对准孔位 调整垂直度 保证垂直成孔 4 7 在施工过程发现异常情况应及时汇报 以便采取措施解决问题 严禁盲目施 工 4 8 认真填写好施工记录表及施工日记 五 安全保证措施五 安全保证措施 5 1 严格执行国家现行有关的安全施工规定 5 2 野外工作开始前 必须召开由有关人员参加公司生产安全会议 强化有关人 员的安全意识 再进场施工 5 3 管理负责人及安全员应经常到施工现场检查安全工作 发现不安全因素 应 及时采取措施予以消除 5 4 设备操作人员要严格按操作规程进行安全文明施工 六 环境保护措施六 环境保护措施 6 1 用砖砌用泥浆池 防止钻孔时泥浆外溢 污染周围地面 同时用膨润土制作 高性能泥浆 减少泥浆的用量 6 2 施工所产生的废浆 废水必须经有效沉淀预处理并达到城市污水排放标准 方可排放 不得直接向场地排放 6 3 尽量在白天进行施