煤炭资源勘查中的煤层气兼探技术与方法

煤层作为煤层气的地质载体，煤层气与煤炭资源兼探是国家矿产资源管理的强制性规定。通过近年来兼探项目的实践，梳理了煤炭资源勘查过程中涉及到的煤层气资源评价规范。在此基础上，从勘查思路、勘查方法、工作任务、报告编制等环节，明确了煤炭资源勘查过程中煤层气勘查方法。根据煤层气勘查方法的特殊性，总结了兼探过程中煤层气地震、测井、钻井、录井、排采等技术及工程质量验收方法，提出了煤炭资源勘查全过程煤层气勘查技术体系。分析发现，现有兼探方法和技术存在若干需要解决的技术问题，如勘查规范滞后、煤炭与煤层气综合勘查缺乏技术标准体系、瓦斯采样方法落后、煤炭资源勘查实施方案审查中对煤层气兼探技术方案把关不严等。由此，进一步提出了相关的对策和建议，包括及时修订DZ/T 0215-2002《煤、泥炭地质勘查规范》、瓦斯采样采用绳索取心技术、将瓦斯地质工作纳入煤层气地质工作体系、在低含气量矿区先期进行煤层气资源潜力评价等。 

Technology and method of CBM concurrent exploration during coal resources exploration

The coal seam serves as a geological carrier for CBM, and exploration of CBM and coal resources is a man-datory requirement for the management of national mineral resources. Based on the practice of project exploration in recent years, it analyzed the evaluation criteria of CBM resources in the process of coal resources exploration. On this basis, the exploration ideas, exploration methods, tasks, report preparations have proposed a method system for CBM in the ex-ploration of coal resources. According to the particularity of CBM exploration work methods, CBM seismic, well logging, drilling, well log, gas drainage, and engineering quality acceptance methods are summarized, and CBM gas exploration technology system in the exploration of coal resources is proposed. The analysis shows that there are some technical problems that need to be solved in the existing methods and techniques, such as the lag of the standard of exploration, the lack of technical standard system for the comprehensive exploration of coal and CBM, the backwardness of the gas sam-pling method, and the strict control of the exploration scheme in the review of the implementation scheme of coal resources exploration. Therefore, the relevant countermeasures and suggestions are put forward, including the timely revision of the coal and peat Geological Survey(DZ/T 0215-2002), the gas sampling using the rope coring technology, the integration of gas geological work into the CBM geological work system, and the evaluation of the potential of CBM re-sources in the earlier exploration stage of the low gas content mining area.