PDF
Full
Outline
In order to elucidate the specific causes of abnormal alarms from CH4 and CO sensors in the return corner of the backfill working face，a systematic investigation was conducted. Initially，a programmed heating-gas chromatography (GC) experiment was carried out on filling materials，complemented by on-site GC measurements，to evaluate whether the alarms were attributable to CH4 and CO concentrations exceeding threshold limits. Subsequently，a portable gas detector was employed to monitor various filling materials，identifying the primary materials responsible for triggering the sensor alarms. Finally，GC-mass spectrometry (MS) analysis was performed to characterize the volatile components of adhesives and their interference effects on CH4 and CO sensors. The results indicate that the alarms triggered by CH4 and CO sensors were caused by the volatile gases from adhesives，rather than by an excessive concentration of CH4 or CO. The primary constituents of the adhesive VOCs were alkanes，while secondary components included alcohols and esters. Key interfering substances for CH4 sensor were alkanes such as C5H12，C6H12，and C6H14，with minor contributions from alcohols and esters such as CH4O，C2H4O2，and C3H8O2. All ten tested combustible gases exhibited cross-interference effects on CH4 sensor. Interfering substances for CO sensor included CH4O，C2H4O2，and C3H8O2. While the sensors demonstrated short-term resilience to interference under abnormal gas atmospheres，their stability and anti-interference performance significantly deteriorated with prolonged exposure.
PDF
261
103
| 科 Family | 属数 Number of genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) | 属 Genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) |
|---|---|---|---|---|---|---|
| 鹅膏菌科Amanitaceae | 2 | 11 | 5.26 | 鹅膏菌属 Amanita | 10 | 4.78 |
| 小菇科 Mycenaceae | 2 | 12 | 5.74 | 丝盖伞属 Inocybe | 5 | 2.39 |
| 多孔菌科 Polyporaceae | 8 | 14 | 6.70 | 蜡蘑属 Laccaria | 5 | 2.39 |
| 红菇科 Russulaceae | 3 | 23 | 11.00 | 小皮伞属 Marasmius | 6 | 2.87 |
| 小菇属 Mycena | 11 | 5.26 | ||||
| 光柄菇属 Pluteus | 5 | 2.39 | ||||
| 红菇属 Russula | 17 | 8.13 | ||||
| 栓菌属 Trametes | 5 | 2.39 |
关闭全屏
No. 86 Xueyuan South Road, Haidian District, Beijing
010-62199257
qkjq@cast.org.cn
Copyright © 2025 China Association for Science and Technology. All rights reserved. For all open access content, the relevant licensing terms apply.
Sponsored by the Office of the Leading Group for Cybersecurity and Informatization of CAST, and supported by Science and Technology Review Publishing House
