我国条带煤柱稳定性研究现状及存在问题

为了揭示条带煤柱动力系统失稳的机理,丰富和发展条带开采优化设计理论,在综合分析大量文献的基础上,从煤柱的载荷和强度、煤柱的尺寸设计、煤柱的稳定性分析等方面对条带煤柱的稳定性研究现状进行了论述．研究指出目前条带煤柱缺少在长期稳定性和动力稳定性方面的理论研究,通过深入系统地研究条带煤柱非线性动力系统稳定性的主要影响因素,应用非线性动力学理论,建立条带开采煤柱变形、破坏、滑动等非线性动力系统稳定性模型和稳定性的判定准则和分析方法,找出影响系统稳定性的控制变量,研究控制变量的变化规律,用调整系统控制变量的方法来防治系统失稳．

Research Status of Strip Coal Pillar Stability and Its Main Problems in China

In order to study the instable mechanism of dynamical system of strip coal pillar and to enrich and develop the optimizing design theory of strip mining,the research status of strip coal pillar stability were reviewed in such aspects as the load and strength,the dimension design and the stability of coal pillar based on the comprehensive analysis of a large number of literatures.The analysis shows that it is very necessary to intensify the study of the long-term and dynamic stability of strip coal pillar.By studying the main factors that affect the stability of nonlinear dynamical system of the strip coal pillar,the stability models and its judgement rules as well as analyzing methods of the nonlinear dynamical system about distortion,damage and slide,etc,were established based on the nonlinear dynamical theory.The change rule of control variables that affect the system stability are also studied.The system stability can be obtained by adjusting the control variables.