Home / Standards / GB/T 25217.11-2019 GB/T 25217.11-2019 Active Methods for test, monitoring and prevention of rock burst—Part 11: Prevention method of destress blasting in coal seam 冲击地压测定、监测与防治方法 第11部分:煤层卸压爆破防治方法 Standard Type GBT ICS 73.040 CCS D20 Status 现行 Issue Date 2019-08-30 Implementation 2020-03-01 Responsible Dept 中国煤炭工业协会 Drafting Unit N/A