Engineering Research Centre for Ecological Restoration Authorized by Ministry of Education, China University of Mining and Technology
School of Electrical Engineering, China University of Mining and Technology
Collaborative Innovation Centre for Resources Utilization and Ecological Restoration for Old Industrial Base
School of Environmental Science and Spatial Informatics, China University of Mining and Technology

在分析能源革命和全球绿色发展大趋势的基础上，提出了煤炭零碳或近零碳开采技术的概念与总体发展思路。煤炭零碳开采技术按照物质能量守恒定律，通过清洁能源消纳与源网荷储协同优化、二氧化碳地质封存、生态系统碳汇提升等实现煤炭开采过程二氧化碳的近零排放。井工煤矿和露天煤矿均以分布式能源为基础，借用虚拟电厂技术将矿区内部资源聚合，对源网荷储协同优化，构建矿区综合能源系统，平抑可再生能源电力的随机波动性，使得不同能源形态之间的耦合更加紧密，为能量的多级应用以及能源的合理配给提供保障，使用清洁能源是实现零碳开采的根本途径。二氧化碳地质封存包括密闭封存、矿化封存和吸附封存等形式，煤矿可充分利用开采煤炭形成的地下空间、岩体裂隙以及深部不可采煤层封存坑口燃煤电厂的二氧化碳，实现封存二氧化碳、处置固体废弃物和减轻下沉的多重效果，是实现零碳开采的重要手段。提升生态系统碳汇包括强化国土空间规划、提高土地种植利用率、优选植物、改良复垦土壤等方式，土壤与植物碳汇是实现零碳开采的必要补充。

Based on the analysis of the big trends for energy revolution and global green development, the concept of coal mining technology with net zero carbon emission (abbreviated as ZCMining) is proposed and the conceptual framework and development strategies for ZCMining are also put forward. The basic principles for ZCMining are mass and energy conservation and earth’s carbon cycle. The near-zero emission of carbon dioxide during coal mining can be achieved through the collaborative optimization of energy sources, electrical network, electrical loads and energy storage by the consumption of clean energy. The other measures for ZCMining include the geological storage of carbon dioxide, and the improvement of ecosystem carbon sink. Based on distributed energy, the underground coal mine and open-pit coal mine use virtual power plant technology to integrate the internal resources of the mining area, optimize the load and storage of the source network, build a comprehensive energy system in the mining area, smooth the random fluctuation of renewable energy power, make the coupling between different energy forms closer, and provide guarantee for the multi-level application of energy and the reasonable allocation of energy. Among all measures for ZCM, the utilization of clean energy is one of the fundamental way. The geological sequestration of carbon dioxide includes sealed storage, mineralized storage and adsorption storage. Coal mines can make full use of the underground space formed by coal mining, rock fissures and deep non-minable coal seams to store carbon dioxide from coal fired power plants adjacent to the coal mine. At the same time, multiple effects such as the storage of carbon dioxide, the disposal of solid waste and the reduction of subsidence can be achieved. The CO2 geological sequestration is an important means to achieve zero-carbon mining. Improving the carbon sink of ecosystem includes strengthening the land use planning, improving the land planting and utilization rate, optimizing plants, improving the reclaimed soil, etc. The soil and plant carbon sink is a necessary supplement to achieve a zero carbon mining.

国家自然科学基金新疆联合基金重点资助项目(U1903209)

卞正富，伍小杰，周跃进，等. 煤炭零碳开采技术[J]. 煤炭学报，2023，48(7)：2613−2625.

BIAN Zhengfu，WU Xiaojie，ZHOU Yuejin，et al. Coal mining technology with net zero carbon emission[J]. Journal of China Coal Society，2023，48(7)：2613−2625.