Home / Standards / GB/T 45610-2025 GB/T 45610-2025 Active Reclamation code of practice for coal gangue backfill subsidence area 煤矸石回填塌陷区复垦技术规程 Standard Type GBT ICS 73.020 CCS D04 Status 现行 Issue Date 2025-04-25 Implementation 2025-11-01 Responsible Dept 中国煤炭工业协会 Drafting Unit N/A