针对动水大通道及地面无法施工直孔的治理技术难题,以潘二煤矿特大隐伏陷落柱突水灾害快速治理工程为例,在分析突水水文地质条件的基础上,提出了采用定向分支斜钻孔同时对过水巷道截流和突水通道堵源的治理方案.根据以往直孔堵水经验,确立了水力射流骨料灌注工艺和分序分段高压注浆工艺,并给出了骨料灌注关键技术和高压注浆结束标准.根据钻探注浆特征分析,结合淮南矿区陷落柱发育基本条件,推测了导水通道形态特征.注浆堵水结果表明:突水点残余涌水量为0,奥灰水位恢复良好,堵水率100％;堵源分支钻孔单位吸水率均小于0.1 Lu,堵源效果良好,彻底切断了奥灰水与突水点之间的水力联系.%According to the technical problems that hydrodynamic large channel water inrush disaster control can't construct straight hole in the ground.Taking a large inrush disaster controlling engineering from Paner coal mine as an example,based on the analyses of hydrogeology condition of water inrush,the controlling project to carry out blocking source and closure simultaneously by directional branch oblique hole is presented.According to the past experience of water plugging by straight hole,hydraulic jet aggregate perfusion process and high pressure grouting process are established,and key technology of aggregate perfusion and ending high pressure grouting standard are given.According to the characteristics of drilling and grouting,the conductor morphological characteristics are speculated combined with the basic condition of collapse column development in Huainan mining area.The results of grouting water plugging indicate that the residual inflow of the water inrush point is zero and the Ordovician limestone water level gets good recovery.It means the water plugging rate is 100％.The unit water absorption of branch holes of blocking source all are less than 0.1 Lu,which means blocking source gets good effect and the water connection between the Ordovician limestone water and the water inrush point is cut off completely.
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