ICS 07.060 CCS P 13 12 天 津 市 地 方 标 准 DB12/T 1119—2021 地面沉降监测分层标设计规范 Design Specification of benchmark fixed on different stratum for land subsidence monitoring 2021 - 12 - 31 发布 2022 - 02 - 01 实施 天津市市场监督管理委员会 发 布 DB12/T 1119—2021 目 次 前言 ................................................................................ III 1 范围 ............................................................................... 1 2 规范性引用文件 ..................................................................... 1 3 术语和定义 ......................................................................... 1 4 总则 ............................................................................... 2 4.1 工作内容 ....................................................................... 2 4.2 工作流程 ....................................................................... 2 4.3 分层标（组）类型 ............................................................... 2 5 场址选择 ........................................................................... 3 5.1 一般规定 ....................................................................... 3 5.2 选址调查 ....................................................................... 3 5.3 选址条件 ....................................................................... 3 6 分层标（组）布置 ................................................................... 4 6.1 6.2 6.3 6.4 6.5 6.6 6.7 一般规定 ....................................................................... 地质勘查孔布置 ................................................................. 基岩标布置 ..................................................................... 分层标布置 ..................................................................... 地下水位监测孔布置 ............................................................. 孔隙水压力监测孔布置 ........................................................... 地面标布置 ..................................................................... 4 4 4 4 4 4 4 7 地质勘查孔 ......................................................................... 4 7.1 目的 ........................................................................... 4 7.2 地质技术要求 ................................................................... 4 7.3 钻探设计要求 ................................................................... 5 8 基岩标 ............................................................................. 5 8.1 8.2 8.3 8.4 一般规定 ....................................................................... 结构设计 ....................................................................... 钻孔设计 ....................................................................... 成标技术要求 ................................................................... 5 5 5 6 9 分层标 ............................................................................. 6 9.1 9.2 9.3 9.4 一般规定 ....................................................................... 结构设计 ....................................................................... 钻孔设计 ....................................................................... 成标技术要求 ................................................................... 6 6 7 7 10 地下水位监测孔 .................................................................... 7 10.1 一般规定 ...................................................................... 7 10.2 结构设计 ...................................................................... 7 10.3 钻孔设计 ...................................................................... 8 I DB12/T 1119—2021 10.4 成标技术要求 .................................................................. 8 11 孔隙水压力监测孔 .................................................................. 8 11.1 11.2 11.3 11.4 一般规定 ...................................................................... 结构设计 ...................................................................... 钻孔设计 ...................................................................... 成标技术要求 .................................................................. 8 9 9 9 12 地面标 ............................................................................ 9 13 监测和保护 ........................................................................ 9 13.1 一般规定 ...................................................................... 9 13.2 监测 .......................................................................... 9 13.3 监测设施保护 .................................................................. 9 14 成果要求 ......................................................................... 10 14.1 一般规定 ...............................................................