地勘时期煤层瓦斯含量修正方法探讨 .pdfVIP

学兔兔 2012年第1 1期 煤 炭 工 程 地勘时期煤层瓦斯含量修正方法探讨 刘志伟 ，冯康武 (1．中煤科工集团重庆研究院，重庆 400037；2．瓦斯灾害监控与应急技术国家重点实验室，重庆 400037) 摘 要：井田地勘期间采用地勘法和直接法对同一煤层不同钻孔、不同埋深条件下的瓦斯含 量进行测定，并以地勘法测定的煤层瓦斯含量为基础数据，采用直接法测定的煤层瓦斯含量对其 进行验证，同时建立一种地勘时期煤层瓦斯含量的修正方法。该修正方法在金沙县化觉井田地勘 时期煤层瓦斯含量的测定进行了现场试验，确定了井田地勘时期煤层的平均瓦斯含量，为井田建 井前煤层的突出危险性评估、矿井瓦斯资源评价提供可靠的依据。 关键词：地勘时期；瓦斯含量；修正方法；直接测定法 中图分类号：TD712 ．3 文献标识码：A 文章编号：1671—0959(2012)l1-0105-04 Discussion on Correctionmethod of Seam Gas Content During Geological Exploration Period LIU Zhi—wei ，1．FENG Kang—WU (1．Chongqing Research Institute，China Coal Technology and Engineering Group，Chongqing 400037，China； 2．State Key Lab of Gas Disastermonitoring and Control and Emergency Technology，Chongqing 400037，China) Abstract： During theminefield geological exploration period， the geological explorationmethod and the directmeasuringmethod were applied tomeasure the gas content in a same seam with different boreholes and different depth． The seam gas contentsmeasured with the geological exploration were applied as the basic data． The seam gas contentsmeasured wish the directmethod applied to verify the basic data．A correctionmethod of the seam gas contents in the geological exploration period was set up．The correctionmethod was applied to the site test on themeasurement of the seam gas content in the geological exploration period of Huajue Coalfield，Jinsban Country and to the determination on the average gas content of the seam in theminefield exploration，which could provide the reliable basis to the outburst danger evaluation of the seam and the gas resources evaluation before themine of theminefield constructed． K