土方开挖基坑支护方案.docx
土方开挖基坑支护方案
目录
一、前言...................................................3
1.1编制目的与意义.........................................3
1.2方案适用范围...........................................4
1.3方案编制依据...........................................5
二、工程概况...............................................5
2.1工程基本情况...........................................6
2.2周边环境条件...........................................6
2.3地质与水文条件.........................................7
三、土方开挖方案...........................................9
3.1开挖顺序与方法.........................................9
3.2开挖过程中的安全措施..................................10
3.3施工机械选择与使用....................................12
四、基坑支护方案..........................................12
4.1支护形式选择..........................................13
4.1.1桩板式支护..........................................14
4.1.2钢筋混凝土支护......................................16
4.1.3锚杆支护............................................16
4.2支护结构设计..........................................17
4.2.1结构体系设计........................................19
4.2.2计算模型与分析方法..................................20
4.2.3材料选择与性能要求..................................21
4.3支护施工工艺..........................................22
4.3.1施工准备............................................24
4.3.2施工过程控制........................................24
4.3.3施工质量检测........................................25
五、土方开挖与支护施工安全措施............................26
5.1安全防护设施设置......................................27
5.2应急预案制定..........................................28
5.3安全教育培训与交底....................................29
六、环境保护与文明施工....................................30
6.1环境保护措施..........................................31
6.1.1土方开挖过程中的扬尘控制............................32
6.1.2噪声控制............................................32
6.1.3水土流失防治........................................33
6.2文明施工管理要求......................................34
6.2.1施工现场布置........................................35
6.2.2材料堆放与清理................................