|
|
|
| Test and evaluation method study on grouting reinforcement effect of coal seam floor |
| He Dongwang, Miao Liwei, Ge Huiqian |
| The Second Hydrological Team, China National Administration of Coal Geology, Xingtai 054000, China |
|
|
|
|
Abstract In order to safely mine No.9 coal, the surface grouting control of No.9 coal above -300 m level was carried out in Yunjialing Mine. Through the construction of directional drilling hole group, the distribution and water conductivity of the structure in the control area were explored and verified. With grouting engineering plugging the corresponding water conduction channel, the structure weak zone of No. 9 coal floor was strengthened, and the confined Ordovician limestone water was plugged into the mine, so that the No. 9 coal mining was safe. In order to verify the grouting effect, the underground verification holes were constructed, the main mud leakage points, the areas with significantly increased grouting amount and the abnormal areas detected by comprehensive geophysical exploration in the process of surface regional control construction of working face were especially checked and verified to ensure the safe mining of No.9 coal.
|
|
|
|
|
|
| [ 1 ] 宋亚亚，王 辉. 综采工作面底板物探异常区检验孔施工设计及效果评价[ J ]. 能源与环保，2018，40（ 12 ）：103 - 107.
[ 2 ] 田更午. 工作面底板物探异常区检验孔施工设计及效果评价[ J ]. 山西能源学院学报2019（ 5 ）：14 - 15.
[ 3 ] 李 鹏. 采面底板物探异常区钻探钻孔设计及效果评价[ J ]. 能源与节能，2019（ 12 ）：82 - 83.
[ 4 ] 刘 宁. 阳煤五矿8136工作面水文物探异常区钻孔设计[ J ]. 能源技术与管理，2017，42（ 5 ）：84 - 86.
[ 5 ] 王 伟. 工作面底板注浆改造施工技术及效果评价[ J ]. 能源与环保，2019，41（ 10 ）：41 - 44. |
|
|
|
