承压水下工作面底板突水机理及注浆加固技术研究  

Study on water inrush mechanism and grouting reinforcement technology of floor slab under pressurized underwater working face

作　　者：陈振芳 CHEN Zhenfang(Pangpangta Coal Mine,Huozhou Coal and Electric Power Group Corporation Limited,Linxian 033200 ,China)

机构地区：[1]霍州煤电集团有限责任公司庞庞塔煤矿,山西临县033200

出　　处：《煤矿现代化》2019年第4期50-52,共3页Coal Mine Modernization

摘　　要：针对煤层底板存在奥灰承压水影响工作面安全回采问题,采用理论分析和数值计算对动压影响下底板破坏深度进行了计算,同时计算了底板承受极限水压力,通过突水危险性评价,可知该工作面在回采过程中易发生突水事故。基于此提出了底板注浆加固方案,使底板抵抗突水的能力得到加强,从而实现工作面安全高效回采。In view of the existence of the coal seam floor under the influence of Ordovician pressure water on safety mining, theoretical analysis and numerical calculation are used to calculate the damage depth of floor slab under the influence of dynamic pressure, at the same time calculating the ultimate water pressure of the bottom plate, through the risk assessment of water inrush, it is known that the coal face is prone to water inrush accident during the mining process. Based on this, the slab grouting reinforcement scheme is proposed to strengthen the floor resistance to water inrush, so as to realize safe and efficient mining.

关 键 词：底板 承压水 突水危险性 注浆加固 

分 类 号：TD327[矿业工程—矿井建设]