标题：Vertical shaft damage and deformation simulation analysis under complex hydrogeological conditions
作者：Chuanyang, Jia ;Zeyu, Chen ;Jie, Luan
作者机构：[Chuanyang, Jia ] State Key Laboratory of Mining Disaster Prevention and Control, Co-founded by Shandong Province and the Ministry of Science and Tech 更多
来源：Electronic Journal of Geotechnical Engineering
摘要：In view of the technical problems such as the rupture of the deep thick topsoil vertical shaft wall and the serious shaft water gushing under the coal mine complex hydrogeological conditions, the groundwater seepage characteristics and water inrush mechanisms around the shaft were obtained through the solid-liquid coupling calculation pattern of the FLAC3D. On this basis, the grouting plugging water gushing technology using the polymer chemistry material malisan N was put forward. The layouts of drill hole of the wall clearance grouting between the main auxiliary shaft and topsoil section and the backwall grouting in the bedrock section were formulated. Through the long-term monitoring of shaft water inflow, the measured water inflow was less than 0.05m3/h. The purposes of the prevention and control of shaft wall rupture, blocking offwater gushing and stabilizing water pressure of aquifer were achieved. The shaft wall supplementary pressure was slow-released and suppressed. © 2015 ejge.