A dynamic gas emission prediction model at the heading face and its engineering application
A dynamic gas emission prediction model at the heading face and its engineering application
复制标题
DOI：
10.1016/j.jngse.2016.02.004
复制
发表时间：
2016-03-01
影响因子：
--
通讯作者：
Zhang, Zhibo
中科院分区：
文献类型：
--
作者：
Chen, Liang;Wang, Enyuan;Zhang, Zhibo
瓦斯涌出预测对瓦斯抽放、控制和利用具有重要意义。提出了多种瓦斯涌出预测方法；然而，由于精度问题，目前还没有广泛使用的方法。应力、瓦斯压力和煤体性质是影响瓦斯涌出的主要因素。气体渗流过程中会发生流固耦合。基瓦斯主要是落煤、工作面和巷道煤壁的结果。建立了瓦斯涌出动态预测模型，综合考虑了瓦斯涌出的影响参数。在采取预防措施和不采取预防措施以及不同行驶速度下，对动态和正常气体排放预测模型的数值进行了比较。结果表明，在不同条件下，动态模型比常规模型具有更高的精度。该模型综合考虑了瓦斯涌出的影响因素，在煤炭工程中具有广泛的应用前景。该研究对瓦斯抽放、控制和利用具有一定的指导意义。(C) 2016 Elsevier B.V.版权所有
Gas emission prediction is very important to gas drainage, controlling and utilization. Many gas emission prediction methods have been proposed; however, there currently is no widely used method because of accuracy issues. Stress, gas pressure and coal property are the main influential factors of gas emission. Fluid-solid coupling occurs during gas seepage. Based gas is primarily a result of fallen coal, work face and roadway coal walls. A dynamic gas emission prediction model is established in this paper, and the influential parameters of gas emission are considered comprehensively. The values from the dynamic and normal gas emission prediction models are compared with and without prevention measures and at various driving speeds. The results demonstrate that the dynamic model has higher accuracy than the normal model under the different conditions. Moreover, the dynamic model can be widely used in coal engineering because it comprehensively considers the factors of gas emission. The research is helpful in gas drainage, controlling and utilization. (C) 2016 Elsevier B.V. All rights reserved.