水泥土防渗墙注水报告.doc

湖南省-洞庭湖区安澧蓄洪垸堤防加固工程2013年实施项目施工总承包水 泥 土 搅 拌 桩 检 测 报 告检测单位名称：常德市精诚水利工程质量检测站有限公司检 测 日 期：二一四年二月十八日报 告 日 期：二一四年六月二十日批 准：审 查：校 核：编 写：试 验：目 录一、前言4二、项目概况4三、工程基本情况与地质概述6四、检测依据及评定标准7五、现场检测7六、检测结果与质量评定11七、附图表17一、前言我公司受湖南华纬水电工程公司的委托，承担湖南省洞庭湖区安澧蓄洪垸堤防加固工程2013年度实施项目设计施工总承包的水泥土搅拌桩防渗墙检测任务，试验方法采用钻孔注水试验法，用以检测搅拌桩防渗墙的渗透系数是否达到设计规范要求，检测孔位由业主监理现场确定，检测数量满足设计要求，外业工作于2014年06月04日进行。二、项目概况工程名称湖南省洞庭湖区安澧蓄洪垸堤防加固工程2013年度实施项目设计施工总承包建设单位湖南省洞庭湖水利工程管理局委托单位湖南华纬水电工程公司勘察单位湖南省水利水电勘察设计研究总院施工单位湖南华纬水电工程公司监理单位湖南德江监理有限公司质量监督站水利部长江流域质量监督分站桩型水泥土深层搅拌桩设计强度等级渗透系数510-7cm/s检测日期2014.6.4-2014.7.51三、工程基本情况与地质概述3.1 工程基本情况安澧大垸位于安乡县北部，四面环水，北与湖北公安县黄金大垸、西与澧县西官垸、东南与安造和安保垸隔河相望。安澧垸夹于松滋河东支与松滋河中支之间，平面上呈南北向带状展布。地势北高南低，地形平坦开阔，人工沟渠及封堵的哑河纵横交错、大小湖泊星罗棋布。安澧垸系长江洪水入湖要道，防洪位置险要，有安乡的北大门之称。安澧垸属洞庭湖区24个蓄洪垸之一，蓄洪容积9.2亿m3。安澧垸保护面积122.73km2，其中耕地面积9.2万亩。行政区划涉及焦圻、安福、安凝3个乡镇的43个村，保护人口7.37万人，其中农业人口6.52万人，非农业人口0.84万人。本次湖南省洞庭湖区安澧蓄洪垸堤防加固工程2013年度实施项目设计施工总承包主要工程项目有：堤身加培、堤身护坡、水泥土防渗墙、粉喷桩抗滑、松木桩固脚、抛石固脚、堤顶防汛砼路面、上堤坡道和上堤踏步等工程，安澧垸堤防工程级别为3级。3.2 工程地质情况安澧垸位于洞庭湖坳陷盆地西部安乡地堑之中，地势北高南低，相对高差2-3m，垸内地面标高30.5-33.5。地形平坦开阔，人工沟渠及封堵的哑河纵横交错，大小湖泊星罗棋布，除东北角见有零星残存的级阶地外，其他地段均为典型的冲积、湖积型地貌。垸内地表出露地层以第四系全新统冲、湖积物（Q4al+1）为主，部分地段为第四系近代河流冲积堆积物（Q4al），下覆地层为第四系中更新统河流阶地堆积物（Q2al）。四、检测依据及评定标准4.1、检测依据：、水利水电工程注水试验规程SL345-2007 、水利水电建设工程验收规范SL223-2008 、水利水电工程施工质量检验与评定规程SL176-2007 、设计文件及图纸4.2、设计合格标准水泥土搅拌桩防渗墙：渗透系数K5.010-7cm/s五、现场检测5.1、试验时间：2014年06月04日2014年07月05日5.2、检测频率：按设计要求沿堤每300m布设孔位5.3、检测方法：采用钻孔注水试验检测方法5.4、检测设备、仪器：(1)、钻进设备：GY-1型工程钻机，108mm合金钻头(2)、供水设备：150泵(3)、量测设备：0.25级压力表、LWY-15型涡轮流量计、量筒、秒表、SWJ-90型钢尺水位计、米尺等(4)、止水设备：橡胶止水栓塞、套管5.5、试验流程(1)、现场检测孔布置根据相关规范和设计要求，由监理单位、业主共同确定位置进行钻孔，共计53个检测孔。各检测孔的布置如下表1表二。、钻孔钻孔釆用108mm合金钻头钻进。、洗孔压水试验前进行洗孔，洗孔釆用压水法进行，洗孔时钻具下至孔底，流量应达到水泵最大出力，洗孔应至回水清洁，肉眼观察无岩粉时方可结束。、试段隔离根据规范要求及现场实际施工情况，本次注水试验自上而下分段隔离进行。注水试验釆用套管进行试段隔离止水。 (5)、地下水位观测试验前进行地下水位观测，确定试验水头和压力计算零线。(6)、压力和流量观测注水试验流量开始每隔5min量测一次，连续量测5次，以后每隔20min量测一次，当连续2次量测的注入流量之差不大于最后一次的10%时，试验结束，取最后一次注入流量作为计算值。 (7)、封孔试验完成后，按相关规定和技术要求进行封孔。26钻孔注水试验检测孔统计表一检测孔编号检测孔位置（桩号）检测孔孔深（m)检测孔部位ZK-01K60+98015.2水泥土深层搅拌桩ZK-02K61+28014.6水泥土深层搅拌桩ZK-03K61+58012.5水泥土深层搅拌桩ZK-04K61+88012.4水泥土深层搅拌桩ZK-05K62+18012.5水泥土深层搅拌桩ZK-06K62+48012.5水泥土深层搅拌桩ZK-07K62+78014.4水泥土深层搅拌桩ZK-08K63+08014.3水泥土深层搅拌桩ZK-09K63+38014.4水泥土深层搅拌桩ZK-10K63+68014.3水泥土深层搅拌桩ZK-11K63+98014.4水泥土深层搅拌桩ZK-12K64+28014.2水泥土深层搅拌桩ZK-13K66+48011.6水泥土深层搅拌桩ZK-14K66+78011.4水泥土深层搅拌桩ZK-15K67+08011.5水泥土深层搅拌桩ZK-16K67+38013.4水泥土深层搅拌桩ZK-17K67+68013.5水泥土深层搅拌桩ZK-18K67+98015.5水泥土深层搅拌桩ZK-19K68+28012.6水泥土深层搅拌桩ZK-20K68+58012.5水泥土深层搅拌桩ZK-21K68+88012.6水泥土深层搅拌桩ZK-22K69+18012.5水泥土深层搅拌桩ZK-23K69+48012.6水泥土深层搅拌桩ZK-24K0+05015.4水泥土深层搅拌桩ZK-25K3+85013.5水泥土深层搅拌桩ZK-26K4+15013.4水泥土深层搅拌桩ZK-27K4+45013.4水泥土深层搅拌桩钻孔注水试验检测孔统计表二检测孔编号检测孔位置（桩号）检测孔孔深（m)检测孔部位ZK-28K8+08012.6水泥土深层搅拌桩ZK-29K8+38012.4水泥土深层搅拌桩ZK-30K8+68014.6水泥土深层搅拌桩ZK-31K8+98014.6水泥土深层搅拌桩ZK-32K14+9007.7水泥土深层搅拌桩ZK-33K15+1009.5水泥土深层搅拌桩ZK-34K15+4009.7水泥土深层搅拌桩ZK-35K15+70012.4水泥土深层搅拌桩ZK-36K16+00014.2水泥土深层搅拌桩ZK-37K16+30014.4水泥土深层搅拌桩ZK-38K16+60011.6水泥土深层搅拌桩ZK-39K16+90013.3水泥土深层搅拌桩ZK-40K17+20013.4水泥土深层搅拌桩ZK-41K17+50015.3水泥土深层搅拌桩ZK-42K17+80015.3水泥土深层搅拌桩ZK-43K18+10015.5水泥土深层搅拌桩ZK-44K22+80010.5水泥土深层搅拌桩ZK-45K23+00012.5水泥土深层搅拌桩ZK-46K23+30014.3水泥土深层搅拌桩ZK-47K23+80014.4水泥土深层搅拌桩ZK-48K24+10015.4水泥土深层搅拌桩ZK-49K24+40015.4水泥土深层搅拌桩ZK-50K24+70015.2水泥土深层搅拌桩ZK-51K58+12014.6水泥土深层搅拌桩ZK-52K58+42014.4水泥土深层搅拌桩ZK-53K58+72014.5水泥土深层搅拌桩六、检测结果与质量评定1、计算方式（一）、常水头注水试验渗透系数K=(A=lg)渗透系数K=(A=lg)根据水利水电工程注水试验规程（SL345-2007):（1）、当试段位于地下水位以下时、当试段位于地下水位以上时 渗透系数K=lg式中：K一试验土层的渗透系数，cm/s;Q一注入流量，L/min;H试验水头，cm；等于试验水位与地下水位之差；A形状系数；按规程附录B选用；L试段长度，cm; r钻孔内半径，cm。2、检测孔钻孔注水试验检测结果详见下表。钻孔注水试验检测结果汇总表一孔号检测内容试段试段长度(m)实测值设计值质量评定ZK-01搅拌桩防渗墙0107.84. 2710-7cm/sk5.010-7 cm/s合格027.815.23.1810-7cm/sk5.010-7 cm/s合格ZK-02搅拌桩防渗墙0106.54.5910-7cm/sk5.010-7 cm/s合格026.512.52. 3710-7cm/sk5.010-7 cm/s合格ZK-03搅拌桩防渗墙0106.03.9510-7cm/sk5.010-7 cm/s合格026.012.53.3110-7cm/sk5.010-7 cm/s合格ZK-04搅拌桩防渗墙0107.14. 9110-7cm/sk5.010-7 cm/s合格027.112.44.3910-7cm/sk5.010-7 cm/s合格ZK-05搅拌桩防渗墙0107.53.8210-7cm/sk5.010-7 cm/s合格027.512.52. 9710-7cm/sk5.010-7 cm/s合格ZK-06搅拌桩防渗墙0107.34.5910-7cm/sk5.010-7 cm/s合格027.312.54.2410-7cm/sk5.010-7 cm/s合格ZK-07搅拌桩防渗墙0106.94.6910-7cm/sk5.010-7 cm/s合格026.914.44.2310-7cm/sk5.010-7 cm/s合格ZK-08搅拌桩防渗墙0107.04. 2710-7cm/sk5.010-7 cm/s合格027.014.33.8310-7cm/sk5.010-7 cm/s合格ZK-09搅拌桩防渗墙0107.74.8610-7cm/sk5.010-7 cm/s合格027.714.44.7710-7cm/sk5.010-7 cm/s合格ZK-10搅拌桩防渗墙0107.62. 2710-7cm/sk5.010-7 cm/s合格027.614.33.9110-7cm/sk5.010-7 cm/s合格ZK-11搅拌桩防渗墙0107.34.5510-7cm/sk5.010-7 cm/s合格027.314.43.7010-7cm/sk5.010-7 cm/s合格钻孔注水试验检测结果汇总表二孔号检测内容试段试段长度(m)实测值设计值质量评定ZK-12搅拌桩防渗墙0107.13.9910-7cm/sk5.010-7 cm/s合格027.114.22.7910-7cm/sk5.010-7 cm/s合格ZK-13搅拌桩防渗墙0106.24.7910-7cm/sk5.010-7 cm/s合格026.211.63.0610-7cm/sk5.010-7 cm/s合格ZK-14搅拌桩防渗墙0105.94.8810-7cm/sk5.010-7 cm/s合格025.911.43.6210-7cm/sk5.010-7 cm/s合格ZK-15搅拌桩防渗墙0106.84. 9410-7cm/sk5.010-7 cm/s合格026.811.54.8210-7cm/sk5.010-7 cm/s合格ZK-16搅拌桩防渗墙0107.44.8710-7cm/sk5.010-7 cm/s合格027.413.44.5410-7cm/sk5.010-7 cm/s合格ZK-17搅拌桩防渗墙0107.73.8110-7cm/sk5.010-7 cm/s合格027.713.52.8210-7cm/sk5.010-7 cm/s合格ZK-18搅拌桩防渗墙0107.93.7710-7cm/sk5.010-7 cm/s合格027.913.52.8210-7cm/sk5.010-7 cm/s合格ZK-19搅拌桩防渗墙0107.84. 0910-7cm/sk5.010-7 cm/s合格027.812.63.3810-7cm/sk5.010-7 cm/s合格ZK-20搅拌桩防渗墙0107.54.3510-7cm/sk5.010-7 cm/s合格027.512.53.7710-7cm/sk5.010-7 cm/s合格ZK-21搅拌桩防渗墙0107.44.4810-7cm/sk5.010-7 cm/s合格027.412.62.7210-7cm/sk5.010-7 cm/s合格ZK-22搅拌桩防渗墙0106.53.9710-7cm/sk5.010-7 cm/s合格026.512.52.4810-7cm/sk5.010-7 cm/s合格ZK-23搅拌桩防渗墙0105.84.8410-7cm/sk5.010-7 cm/s合格025.812.62.6510-7cm/sk5.010-7 cm/s合格钻孔注水试验检测结果汇总表三孔号检测内容试段试段长度(m)实测值设计值质量评定ZK-24搅拌桩防渗墙0107.93.8910-7cm/sk5.010-7 cm/s合格027.915.42.8310-7cm/sk5.010-7 cm/s合格ZK-25搅拌桩防渗墙0107.74.9810-7cm/sk5.010-7 cm/s合格027.713.54.0010-7cm/sk5.010-7 cm/s合格ZK-26搅拌桩防渗墙0106.94.4510-7cm/sk5.010-7 cm/s合格026.913.43.4110-7cm/sk5.010-7 cm/s合格ZK-27搅拌桩防渗墙0106.84. 5810-7cm/sk5.010-7 cm/s合格026.813.43.0810-7cm/sk5.010-7 cm/s合格ZK-28搅拌桩防渗墙0106.64.7810-7cm/sk5.010-7 cm/s合格026.612.63.6610-7cm/sk5.010-7 cm/s合格ZK-29搅拌桩防渗墙0106.74.0110-7cm/sk5.010-7 cm/s合格026.712.42.8010-7cm/sk5.010-7 cm/s合格ZK-30搅拌桩防渗墙0107.24.1810-7cm/sk5.010-7 cm/s合格027.214.62.7910-7cm/sk5.010-7 cm/s合格ZK-31搅拌桩防渗墙0107.84. 3910-7cm/sk5.010-7 cm/s合格027.814.62.4410-7cm/sk5.010-7 cm/s合格ZK-32搅拌桩防渗墙0105.24. 9910-7cm/sk5.010-7 cm/s合格025.27.74.8210-7cm/sk5.010-7 cm/s合格ZK-33搅拌桩防渗墙0105.84. 8810-7cm/sk5.010-7 cm/s合格025.89.54.7410-7cm/sk5.010-7 cm/s合格ZK-34搅拌桩防渗墙0106.24.2110-7cm/sk5.010-7 cm/s合格026.29.73.8210-7cm/sk5.010-7 cm/s合格ZK-35搅拌桩防渗墙0107.54.5610-7cm/sk5.010-7 cm/s合格027.512.43.1810-7cm/sk5.010-7 cm/s合格钻孔注水试验检测结果汇总表四孔号检测内容试段试段长度(m)实测值设计值质量评定ZK-36搅拌桩防渗墙0108.14.5510-7cm/sk5.010-7 cm/s合格028.114.23.3610-7cm/sk5.010-7 cm/s合格ZK-37搅拌桩防渗墙0106.74.8710-7cm/sk5.010-7 cm/s合格026.714.43.6410-7cm/sk5.010-7 cm/s合格ZK-38搅拌桩防渗墙0105.84.2610-7cm/sk5.010-7 cm/s合格025.811.63.9310-7cm/sk5.010-7 cm/s合格ZK-39搅拌桩防渗墙0106.33.9810-7cm/sk5.010-7 cm/s合格026.313.33.4810-7cm/sk5.010-7 cm/s合格ZK-40搅拌桩防渗墙0106.14.6710-7cm/sk5.010-7 cm/s合格026.113.42.3710-7cm/sk5.010-7 cm/s合格ZK-41搅拌桩防渗墙0108.84.6110-7cm/sk5.010-7 cm/s合格028.815.33.5710-7cm/sk5.010-7 cm/s合格ZK-42搅拌桩防渗墙0108.54.5610-7cm/sk5.010-7 cm/s合格028.515.33.1210-7cm/sk5.010-7 cm/s合格ZK-43搅拌桩防渗墙0106.94.8710-7cm/sk5.010-7 cm/s合格026.915.53.3510-7cm/sk5.010-7 cm/s合格ZK-44搅拌桩防渗墙0105.54. 3810-7cm/sk5.010-7 cm/s合格025.510.53.7910-7cm/sk5.010-7 cm/s合格ZK-45搅拌桩防渗墙0106.14.5610-7cm/sk5.010-7 cm/s合格026.112.52.3910-7cm/sk5.010-7 cm/s合格ZK-46搅拌桩防渗墙0107.74.9310-7cm/sk5.010-7 cm/s合格027.714.34.1810-7cm/sk5.010-7 cm/s合格ZK-47搅拌桩防渗墙0108.54.8710-7cm/sk5.010-7 cm/s合格028.514.44.3010-7cm/sk5.010-7 cm/s合格钻孔注水试验检测结果汇总表五孔号检测内容试段试段长度(m)实测值设计值质量评定ZK-48搅拌桩防渗墙0108.74.1110-7cm