摘要
煤层底板突水是水文地质环境与采矿工程相互作用形成的动态演变过程,其非线性动力学特征受多因素耦合影响。采用科学的风险评估方法可有效提升预测精度,本研究基于“五图双系数”法对3号煤层带压开采区域进行安全评价。实测数据显示,该区域带压强度介于2.601 5~4.682 MPa/m,符合带压开采条件;突水风险参数值域为0.021~0.050 5 MPa/m,均低于0.06 MPa/m的安全阈值。综合评价将该区域划分为Ⅱ类安全等级,属于非贯通式相对安全区域。在常规开采工况下,3号煤层底板发生突水事件的概率较低,但需注意地质构造发育区域仍存在潜在突水威胁。研究成果为制定矿区安全生产方案提供了重要技术支撑。
Water inundation in the coal seam floor is a dynamic evolution process formed by the interaction between the hydrogeological environment and mining engineering,and its nonlinear dynamic characteristics are influenced by the coupling of multiple factors.The adoption of scientific risk assessment methods can effectively improve the prediction accuracy.In this study,the safety evaluation of the pressurized mining area of the No.3 coal seam was conducted based on the"five-graph double-coefficient"method.The measured data show that the pressure strength of this area is within the range of 2.6015~4.682 MPa/m,which meets the conditions for pressure mining.The value range of the water inrush risk parameter is 0.021~0.05085 MPa/m,all of which are lower than the safety threshold of 0.06 MPa/m.The comprehensive evaluation classifies this area as a class II safety level,which belongs to a non-connected relatively safe area.Under the conventional mining conditions,the probability of water inburst events occurring in the floor of the No.3 coal seam is relatively low.However,it should be noted that there are still potential water inburst threats in the areas where geological structures are developed.The research results provide important technical support for formulating the safety production plan in the mining area.
作者
任兴旺
REN Xingwang(Dongqu Coal Mine,Shanxi Coking Coal Group Co.,Ltd.,Taiyuan 030299,China)
出处
《煤》
2026年第3期102-105,共4页
Coal
基金
中央高校基本科研业务费资助项目(3142022003)。
关键词
五图双系数法
带压开采
底板突水危险性
five-diagram double-coefficient method
mining under pressure
danger of water inrush from the floor
