[双碳"的确定对煤气同采发展理念提出了绿色低碳的新要求.立足我国以煤为主的能源禀赋特点.针对煤矿CH4-CO2双重碳减排技术难题.通过探究煤矿瓦斯高效精准抽采.煤矿瓦斯全浓度梯级利用及煤层CO2捕获-封存-利用等关键技术问题.提出了以煤矿CH4-CO2近零碳排放为核心的全生命周期煤气同采技术体系构想.从低碳融合技术与负碳技术两方面阐述了该构想体系.并简化分析了相应的碳源汇机制.煤矿瓦斯高效精准抽采涵盖瓦斯含量精准原位测定.瓦斯涌出量精准预测.瓦斯高效抽采区域精准辨识.瓦斯抽采精准施工设计.瓦斯抽采精准增透及瓦斯抽采精准调控,在瓦斯全浓度梯级利用方面.提出了高浓度瓦斯直接利用.乏风瓦斯及低浓度瓦斯提浓增效技术为主的阶梯式综合利用体系,煤层CO2封存作为典型负碳排放技术已处于商业运行阶段.笔者及其团队则聚焦煤矿CH4-CO2近零碳排放核心.提出了CO2煤矿采空区吸储与植被固碳理念.最后阐述了双碳目标下煤气同采技术体系的发展方向:①[地质透明化-抽采智慧化"与瓦斯精准抽采深度融合技术,②瓦斯富集-提浓-利用一体化技术及装备,③[CCUS+生态碳汇"全域负碳排放技术,④煤气同采全生命周期CH4-CO2动态监测及管控技术体系.通过该构想的逐步实施.为我国煤炭行业碳中和目标实现提供新的发展思路.

The determination of [double carbon" puts forward some new requirements of green and low carbon for the development concept of coal and gas co-mining. Based on the characteristics of China`s coal-based energy endowment, aiming at the technical problems of CH4-CO2 double carbon emission reduction in coal mines, this study investigates the key technical problems such as the efficient and accurate extraction of coal mine gas, the cascade utilization of coal mine gas with full concentration and CO2 capture-storage-utilization in coal seams. Therefore,the study puts forward the conception of the whole life cycle gas simultaneous mining technological system with near zero emission of CH4-CO2 in coal mines as the core, expounds the conception system from two aspects of low-carbon fusion technology and negative carbon technology and analyzes the corresponding carbon source and sink mechanism relationship. Efficient and accurate gas extraction in coal mine covers the in-situ measurement of gas content in deep hole, the accurate prediction of gas emission, the accurate identification of gas extraction area, the accurate construction design of gas extraction, the accurate anti-reflection of gas extraction and the accurate regulation of gas extraction. In the step-by-step utilization of coal mine gas with full concentration, a step-by-step comprehensive utilization system based on the direct utilization of high-concentration gas, the concentration enhancement and efficiency enhancement technology of ventilation gas and low-concentration gas is put forward. As a typical negative carbon emission technology, the CO2 storage in coal seam has been in the commercial operation stage. The authors focus on the core of near-zero carbon emission in coal mine gas, and put forward the concept of carbon sequestration in the goaf of CO2 coal mine and vegetation. Finally, the development direction of CH4-CO2 collaborative emission reduction technology system in the coal mine under the dual-carbon target is expounded including ① the deep integration technology of [geological transparency-extraction intelligence" and gas accurate extraction; ② the gas enrichment-enrichment-utilization integrated technology and equipment; ③ the global negative carbon emission technology of [CCUS+ecological carbon sink";④ the dynamic monitoring and control technology system of CH4-CO2 in coal mine in the whole life cycle. Through the gradual implementation of the concept above, the aim is to provide some new development ideas for the realization of carbon neutrality in the China`s coal industry.

1 煤气同采技术体系构想

2 煤气同采技术体系内涵

   2.1 煤矿瓦斯高效精准抽采

   2.2 煤矿瓦斯全浓度梯级利用

   2.3 煤层CO₂捕获-封存-利用

3 煤气同采技术发展方向

   3.1 [地质透明化-抽采智慧化"与瓦斯精准抽采深度融合技术

   3.2 瓦斯富集-提浓-利用一体化技术及装备

   3.3 [CCUS+生态碳汇"全域负碳排放技术

   3.4 全生命周期煤矿CH₄-CO₂动态监测及管控技术体系

4 结论