行业：矿山开采

Mine underground gas and multi-component toxic gas monitoring solution

MA certified mining equipment, featuring dual coverage of fixed and portable models, with dual power supply from lithium battery and solar energy

行业痛点

矿山井下是”瓦斯（CH4）+ 一氧化碳（CO）+ 二氧化碳（CO2）+ 硫化氢（H2S）+ 缺氧”五重叠加 + 高粉尘 + 高湿 + 防爆环境的极端复杂工况。煤矿瓦斯爆炸下限 5%、上限 16%，井下浓度 1% 即必须撤离 + 立即停止采掘；煤层自燃产生 CO（CO > 24 ppm 持续上升 = 自燃征兆，按《煤矿安全规程》必须立即处置）；含硫煤层 H2S 突发可达数百 ppm；爆破后采空区 NO2 + CO 浓度极高。监测系统必须 24×7 全覆盖、防爆 Ex d I Mb 级、抗振防尘 IP67，且数据必须接入煤矿安全监控系统（KJ 系统）和应急管理局监管平台。一次瓦斯超限漏报罚款 50 万 + 停产整顿。

方案概述

优锐安符合 AQ 1029-2019 + GB 3836 系列的煤矿井下气体监测方案：① 固定式 CH4 + CO + O2 + CO2 + H2S + 风速 + 温度多参数综合分站，部署密度严格按《煤矿安全规程》第 487 条；② 矿用本安型便携 4 合 1（CH4 + CO + O2 + H2S）每个班组人手一台，进入采掘工作面强制开机；③ 与煤矿安全监控系统（KJ95N / KJ90 / KJ70）协议级对接（CAN 总线 / MA 标准），实现远程实时监测 + 超限断电 + 自动撤人；④ 移动便携式爆破前后气体取样仪（CO + NO2 + 氧气）符合 AQ 1052 爆破后通风专项要求。关键节点：综采工作面、综掘工作面、回风巷、煤仓、皮带运输巷、机电硐室、井底车场。

## Key Locations (Mandatory Requirements According to Regulations)

– **Fully mechanized mining/tunneling face**: CH4 is detected at a distance of 5m from the heading in the return air duct of the working face; T2/T3 alarm thresholds are 1.0%/1.5%
– **Return air duct / main return air**: Conduct joint measurement of CH4, CO, and wind speed. An alarm must be triggered if CH4 > 0.75%
– **Near the mined-out area**: CO (spontaneous combustion monitoring) + CO2 (asphyxiation), the upward trend of CO is more important than its absolute value
– **Coal bunker / Tripper room**: dust + CO + CO2
– **Electromechanical chamber / substation**: CH4 + CO + smoke
– **Return air shaft portal (ground level)**: Total return air concentration of CH4 + CO, triggering ground-level emergency response if exceeding the limit

## Key Technical Specifications

– Explosion-proof: Ex d I Mb (specially designed for underground coal mines)
– Protection: IP67 (high dust + water droplet)
– Operating temperature: -20℃ ~ +50℃
– Communication: CAN bus / RS485, compliant with KJ95N protocol
– Mine-used product safety mark (MA)
– Battery life: portable ≥ 14 hours (for one shift)

## Implementation Essentials

1. **Over-limit power-off automatic logic**: If CH4 > 1.5%, immediately shut down the extraction machine + local fan → evacuate personnel
2. **CO Trend Alarm**: CO increase > 5 ppm/h for 3 consecutive hours → spontaneous combustion warning, initiate nitrogen injection / grouting
3. **Special Monitoring After Blasting**: After blasting, it is necessary to wait until CO < 0.0024% and NO2 < 0.00025% before re-entry 4. Calibration cycle: Calibrate CH4 with standard gas every 7 days (routine calibration by gas inspector) + calibrate at the instrument verification center every 6 months ## Regulatory Basis - Articles 487-509 of the "Coal Mine Safety Regulations" (2022 Edition) - AQ 1029-2019 "General Technical Requirements for Coal Mine Safety Monitoring Systems" - AQ 1052-2008 "Requirements for Mine Air Testing after Blasting" - GB 3836-2021 "Electrical Apparatus for Explosive Gas Atmospheres" - MT/T 1004 Series Standard for Monitoring and Control Devices Used in Coal Mines ## Applicable Customers National Energy / Middling Coal Energy / Shanxi Coking Coal / Yanzhou Mining Group / Shaanxi Coal and other coal groups; non-coal mines (metal / nonferrous / chemical mines); portable equipment for mine rescue teams.