摘要
桧树亭矿主采煤层为二_(1)煤,井田构造发育复杂,治理区域内存在主要断层有郭庄断层(DF_(22))、油坊沟断层(DF_(17))及滑F_(1)断层,其中滑F_(1)断层为一低倾角滑动断层,导致煤层与奥灰顶界面之间部分地层缺失,隔水层厚度不均一。对15采区区域治理注浆情况进行了分析,表明DF_(17)断层为该区域内一主要导水通道,同时在DF_(17)断层附近注浆时发生多次地面及井下冒浆。通过对冒浆原因分析,发现其主要是由断层导通至地面所引起,且DF_(17)断层与滑F_(1)断层,在施加外力条件下,会发生联通。通过调整注浆工艺对断层通道进行治理加固,成功解决了冒浆问题,也为后续治理工程提供了方法依据,指明了重点防治方向。
The main coal seam of Huishuting Mine is No.2_(1) coal,which has a complex well-developed structure.There are mainly Guozhuang fault(DF_(22)),Youfanggou fault(DF_(17))and slipping F_(1) fault in the treatment area.And the slipping F_(1) is a low dip sliding fault,which cause part of the stratum between the coal seam and the austenitic ash top interface to miss,and make the thickness of the water barrier become non-uniform.The grouting situation of regional governance in 15 mining areas is analyzed in this paper,and the results have shown that the DF_(17) fault is one of the main water-conducting channels in this area.When grouting near the DF_(17) fault,multiple ground and underground oozing slurry phenomena occurred.Analysis found that the fault is connected to the ground,in addition,the DF_(17) fault is connected with the sliding F_(1) fault under the condition of external force.By adjusting the grouting process,the fault channels were plugged and strengthened,and oozing slurry phenomena were successfully solved.This provides a worthy method for the follow-up grouting treatment project.The key prevention and control direction was pointed out as well.
作者
马震仪
Ma Zhenyi(The Third Hydrogeological Exploration Team,CNACG,Handan,Hebei 056006)
出处
《中国煤炭地质》
2022年第S01期82-85,151,共5页
Coal Geology of China
