2023年建筑行业滑坡治理注浆加固施工组织设计.docx

xxxxxx (K20+800～K20+935)左侧滑坡处治 施 工 组 织 设 计 目录 1工程概略·······································································································1 地形地貌·································································································1 地层岩性·································································································1 水文地质特点·························································································1 2施工构造打算·································································································1 ·································································································1 ·································································································1 ·····································································6 3施工园地安排·································································································6 ·········································································································6 ·····································································································6 ·························································································6 ·························································································7 ·························································································7 4施工总体安排·······························································································7 ·····················································································7 ·················································································9 ·································································9 5工期打算及工期保障方法···········································································10 ···································································································10 ·······························································································10 ·······················································································11 6.工程质量···································································································13 ·······························································································13 ·······················································································13 7施工平安······································································································15 ·······························································································15 ·······················································································16 7.3平安消费规律······················································································18 ···············································································19 8施工情况保护、水土保持跟文物保护等方法跟打算·································20 9文化施工保障方法及创破文化工地的打算···············································21 ···············································································21 ·······················································································21 10休息卫生保障方法·····················································································22 xxx(K20+800～K20+935)左侧 滑坡处治施工构造打算 1、工程概略 待处治的滑坡位于xxxxK20+800～K20+935段左侧，南北向长约65m阁下，货色向顺道途长度达135m，破体上呈弧形，前后缘高差达22m。 园地原始地形为丘陵，高速公路由东至东偏向穿过该区。边坡上部为路径状农田。滑坡后壁位于农田之中，滑坡后缘天然边坡较陡峭，滑坡两侧为走向垂直于路途偏向的冲沟。 第四系全新统〔Qh〕 1)填筑土：其成份为粉砂岩块石，要紧散布于施工便道，厚度约1.00m～2.00m。 2)莳植土：坚实，散布于农田跟山坡上，厚0.30m。 3)亚粘土：褐黄色、褐白色，硬塑状，厚约厚1.60～2.00m，要紧散布于边坡前面的农田。 白垩系下统〔K1〕 1)粉砂岩：紫白色，以钙泥质胶结为主，局部夹泥质胶结，中厚层状，岩石遇水硬化。全风化层，褐白色，呈可塑～硬土状，厚1.60～6.70m；局部底部存在2.20m厚的泥化夹层；强风化层，岩石较破裂，岩芯呈碎石、碎块状，岩性较软。 园地地下水要紧承受年夜气落水补给。边坡上部汇水面积年夜，在旱季，边坡上部所会聚雨水经坡面所构成的面流易在裂痕处下渗而转化为地下水,流向歪坡坡足处，并于滑坡坡体内里部及坡足处以下落泉的方式分泌。 2、施工构造打算 该滑坡治理工程施工的总体目的是“平安、经济、环保、温馨、雅不雅〞。同时倡导浪费理念跟贯彻交通部关于在公路树破中履行最严峻的耕地保护轨制的假设干看法。 从以上施工总体目的动身，结合该工程园地地形跟工程地质前提，该滑坡治理工程打算采纳注浆处置打算。 2.2施工次序 按照打算打算，该滑坡治理工程触及的要紧子工程工程有：①放坡施工；②注浆加固；③防排水方法施工。 2.2.1放坡施工 由于采纳注浆加固处置，只要对原坡面进展修整，自路基左侧起按原放坡打算坡比进展放坡，比例及高度参数如下： 第一级：自坡足由下至上按1：1.5放坡，坡面植草防护，上部按坡顶地形操纵高度，最高处为13m； 其余坡面保持原有地形地貌。 本滑坡处治打算采纳注浆加固，注浆地区为裂痕所围成的地区，即在全部滑体上钻孔，注浆，插钢筋。钻孔深度打算恳求穿过滑动面，进入滑床岩体2～3m，注浆采纳孔口封锁纯压式注浆。采纳梅花形布孔，钻孔间距5m，每排间距5m。放坡坡面采纳植草防护。 注浆加固要紧包含注浆试验、注浆施工、注浆质量后果测验三个步调。 2.2.2.1注浆试验 为了理解地层注浆特点，测验本次滑坡注浆处治所设参数的精确性以及是否抵达可能的注浆后果，应先期进展注浆试验，并以试验后果修正注浆打算打算。注浆试验安排如下： 1)注浆试验地段的选择 注浆试验地段的选择在存在代表性，且地质前提中等偏劣的地段。本次注浆试验地段按打算文件选在K20+880左侧55m处10mx8.6m的地区。 2)注浆试验孔的安排 本次注浆试验按打算恳求布孔共11个，此中注浆孔7个，反省孔4个。注浆孔按照3个次第进展钻孔注浆，详细安排见以以下图： 注浆试验施工将严峻按照分序加密原那么进展，每次序孔施工时间间隔年夜于12h。 3)注浆试验钻孔 注浆孔孔径110mm。深度按打算恳求穿过滑动面进入滑床弱风化岩层不小于2m，采纳净水轮回钻进，钻孔地位应不偏离打算孔位0.1m，孔歪操纵在2%以内。 4〕试验孔注浆 ①本次注浆试验采纳孔口封锁式一次轮回注浆，浆材选用32.5级一般硅酸盐水泥。 ②水灰比初始为1：1，并逐步减小至0.6:1。 ③关于浆液功能的评估，假设参加外掺剂需通过浆液室内试验断定。按打算恳求，注浆试验的浆液室内试验将包含以下多少个方面： a、配比试验 b、流淌性，凝聚时间 c、结石的容重、强度、弹性模量。 ④注浆压力 进展注浆试验时，可以采纳逐步进步注浆压力的方法，注浆量突然增年夜时，说明地