According to analytical solution, the plastic soften theory on coal layer is used to solve the deformation and stress distributions of coal layer and roof along working surface.
运用煤层塑性软化理论,通过解析分析,导出了采煤工作面附近煤层和顶板的变形与应力分布规律,运用极值点失稳理论,给出了煤体开始软化时的采空区跨度与顶板所受压力之间的关系,计算了采煤工作面产生冲击地压时采空区跨度与载荷间关系。
Based on the analytic analysis,temperature field and pumped-face thermal distortion field of a rectangle Nd:GdVO4 crystal double-end-pumped by lasers having Gaussian intensity distribution are researched.
以解析分析为基础,研究矩形横截面Nd:GdVO4晶体受高斯分布激光双端面中心入射时温度场以及抽运面热形变分布情况。