高承压含水层上采煤防治水技术

Mine Water Management in Mining Coal Above High-confined Aquifer

新义煤业有限公司主采二叠系山西组二1煤层,在采煤过程中主要受到底板间接充水含水层——奥陶系灰岩岩溶裂隙含水层的威胁,属超高承压(>5 MPa)含水层上开采。为消除奥陶系灰岩含水层突水威胁,保证安全生产,在工作面构成后采用井下物探、钻探及底板注浆改造等技术综合治理,取得了较好的效果。

Ⅱ1 Coal Seam of Permian Shanxi Formation is the main coal seam in Xinyi Coal Industry Co.,Ltd,and it is mainly influenced by bottom filling aquifer indirect ordovician limestone aquifer threat in the recovery process,which can be assigned to an ultra-high pressure（ 5MPa）on the exploitation of the aquifer.To eliminate the ordovician limestone aquifer water burst threat and ensure safety in production,after the working face formed,underground geophysical exploration,drilling and grouting and transformation technologies were used to realize the comprehensive water control,and all this has achieved good results.