ICS13.020 CCSZ06 21 辽宁省地方标准 DB21/T3973—2024 闭坑露天煤矿综合治理技术规程 Technicalspecificationforcomprehensivetreatmentofopen-pitclosedcoalmine 2024-06-30发布 2024-07-30实施 辽宁省市场监督管理局  发布 DB21/T3973—2024 I目次 前言..................................................................................II 1范围.................................................................................1 2规范性引用文件.......................................................................1 3术语和定义...........................................................................2 4总则.................................................................................3 5综合调查与勘查.......................................................................3 6工程设计.............................................................................4 7工程施工.............................................................................6 8监测与管护...........................................................................7 9竣工验收.............................................................................8 附录A（资料性）闭坑露天煤矿综合治理工作程序..........................................9