In order to prevent threat of floor limestone confined groundwater in exploring procedure of working face, technologies of two2 coal seam floor three zones structural model and seam floor vertical renovation were set up through analysis of floor remold information and water burst incident. The results showed that two2 coal seam floor included three kinds of abnormal belts, which were sandstone fracture belt, zone of pressure water inducing height and limestone aquifer water enriched zone. Mine floor remold drilling seriflux migration was mainly based on depth fracture along with vertical movement instead of consequent landslide horizontal movement law. According to floor grouting remold in 2209 working face, tonnage was decreased to 170 m3/h after working face remold and has obvious effect.
史海庆. 矿区煤层底板注浆改造技术应用研究[J]. 煤炭与化工, 2016, 39(10): 43-45.
Shi Haiqing. Application research on grouting techniques on coal floor. CCI, 2016, 39(10): 43-45.
