基于可解吸瓦斯含量的综放工作面涌出量预测方法研究与应用

Research and Application of Prediction Method of Gas Emission in Fully Mechanized Top Coal Caving Face Based on Content of Desorption Gas

综放工作面瓦斯涌出量受开采工艺、地质条件、煤层瓦斯含量影响较大,具有时间、空间的不均衡性特点,为减小预测误差,分析了误差原因及改进方法,提出了可解吸瓦斯含量系数预测方法并建立了数学模型,应用可解吸含量系数方法数学模型对综放工作面瓦斯涌出量进行了预测,相对误差在-9.31%~+8.02%,取得了较好的预测结果,能够用于指导矿井的通风设计,对条件类似矿井具有一定借鉴意义。

The gas emission quantity of fully mechanized caving face is greatly influenced by mining technology, geological conditions and coal seam gas content, which has the characteristics of time and space disequilibrium, a method for predicting the coefficient of desorbed gas content is put forward and a mathematical model is set up. The relative error is between-9.31% and +8.02% by using the mathematical model of the coefficient of desorbed gas content, the forecast result is good and can be used to guide the ventilation design of mine. It has certain reference significance to similar mine.