摘要
以自然解吸样品为对象,研究大气压力对煤样解吸气含量测试结果的影响。结果表明:当样品从大气压力较低的采样地点返回大气压力较高的实验室后,每24 h的解吸气含量测试结果明显减小,减小的幅度明显大于采样地点每24 h减小的幅度;对于开始7 d解吸气含量测试结果为零或者较小、按照标准可以结束测试的样品,建议将测试时间延长在3周左右,若按照标准仍旧可以结束测试时,再停止实验;如果样品在采样地点进行解吸实验直到结束,总解吸气含量测试结果将大于实验室。
In this paper, the effects of atmospheric pressure on the test result of desorbed coalbed gas content were studied. It is indicated that after samples returned to laboratory of higher atmospheric pressure from sampling site of lower atmospheric pressure, the desorbed gas content decreased obviously of every 24h.For samples that the desorbed gas content is zero or very little during the first seven days and the test should be ended according to the standards, the test duration should be extended to about 3 weeks. If the desorption test is conducted at the sampling site until the end, the total desorbed gas content will be higher than that in the laboratory.
出处
《煤田地质与勘探》
CAS
CSCD
北大核心
2015年第4期51-54,共4页
Coal Geology & Exploration
基金
国家科技重大专项课题(2011ZX05033-002)
中煤科工集团有限公司科技创新基金(2014MS010)
中煤科工集团西安研究院有限公司科技创新基金(2013 XAYPT003)
关键词
大气压力
煤样
解吸气含量
atmospheric pressure
coal samples
desorbed coalbed gas content
