综放工作面采空区瓦斯涌出规律的数值模拟研究

采用迎风有限元数值模拟结合图形显示技术求解综放工作面采空区二维流场瓦斯涌出扩散方程,在放煤仿真边界条件下通过画面直观描绘放顶煤过程中瓦斯涌出及其分布动态变化过程。讨论了通过模拟试验确定防止综放工作面瓦斯超限的技术措施,结合具体算例,提出在工作面设置移动调节风障和采用“双九一六”作业形式降低漏回风侧（上行）的放煤强度来控制放煤瓦斯团涌入工作面的新方法。

Study on numerical simulation of gas eission regularity and boundary condition of the goaf in coal caving of the fully-mechanized

Using computer numerical simulation of finite element combing with technology graph display to solve the gas seepage diffusing equation of two dimensional wandering field in goaf of full mechanized top coal caving. Through the tableau that audio visal describe the gas gush during the press under roof coal caving and its describe dynamic changing process under top coal caving simulation boundary. Disscussed the technical measures that determine to protect dissallowed gas concentration in the face of full mechanized top coal caving through simulation experiments. Combing with concrete calculation example it expounds installing moving and adjustment windbreak in face and using the work form of "double nine one six" to decline the coal caving strength of reture air,so as to control that the coal caving gas mass burst into face.