矿业科学学报2025，Vol.10Issue(5)：859-866,8.DOI:10.19606/j.cnki.jmst.2025076
密闭取样瓦斯损失量计算方法构建及辅助计算软件开发
Method for calculating the amount of gas loss from confined sampling and its software development
摘要
Abstract
Coal seam gas content is a fundamental parameter in the evaluation and development of coal-bed methane resources,prediction of coal seam gas protrusion risk as well as prevention and control of gas disasters.At present,long-distance and long-drilling confined sampling is widely used in gas area management.This study analyzed the desorption process and patterns of underground confined sampling gas in order to calculate the amount of gas loss during the sampling process.We proposed a novel meth-od of loss calculation based on Sun Chongxu's formula,and developed an auxiliary software for calcu-lating the amount of loss of gas by using the C# language and MySQL database.Results show that the average loss of gas sampled from confined sampling obtained by the new method and auxiliary software accounted for 13.15％of the gas content.The gas content measurement in the coal seam yielded results that were 4.04-6.58％higher than that of the traditional sampling method of'catching powder at the mouth of the hole'.This method and the auxiliary calculation software could calculate the amount of gas loss from sampling,thus improving the accuracy of gas content determination,and meeting the en-gineering demand in long-distance and long-drillhole confined sampling.关键词
瓦斯含量/密闭取样/瓦斯损失量/孙重旭式模型/辅助计算软件Key words
gas content/confined sampling/gas loss/Sun Chongxu's formula/auxiliary calculation soft-ware分类
矿山工程引用本文复制引用
温志辉,贾冉,魏建平,余霄,万兆旭,王建伟,毋新亮..密闭取样瓦斯损失量计算方法构建及辅助计算软件开发[J].矿业科学学报,2025,10(5):859-866,8.基金项目
国家自然科学基金(52274191) （52274191）
中国博士后科学基金(2021M700132) （2021M700132）
