煤田三维地震勘探构造解释成果准确率评价标准探讨

Discussion on the accuracy evaluation standard of structural interpretation results of three-dimensional seismic exploration in coalfield

三维地震勘探准确率评价对于三维地震勘探技术进步和煤炭企业对三维地震资料的高效利用具有重要意义。在大量调研煤炭企业和勘查单位后,以《煤炭煤层气地震勘探规范》(MT/T 897—2000)为基础,采用综合评价法对三维地震资料验证准确率的评价因素进行了界定,系统科学地制定了评价标准,与同行进行探讨,便于今后在统一的三维地震准确率评价尺度下开展学术交流,促进业内技术进步。

At present,three-dimensional(3D)seismic exploration has been widely used in various stages including coal production and exploration,coal mine field planning,and coal mine design.It has solved the major geological problems involved in the safe and efficient production of coal mines,but there are some deviations and the construction of various interpretations in the results.It is necessary to evaluate the accuracy of 3D seismic exploration results,find technical problems affecting the accuracy of exploration,and find out the method to improve the precision and accuracy of 3D seismic exploration,and further promote the continuous progress of 3D seismic exploration technology and the scientific and efficient utilization of 3D seismic data in coal enterprises.In the past,the evaluation standards for the accuracy rate of 3D seismic exploration results were inconsistent among various companies,and the types of structures evaluated were not comprehensive.After investigating a large number of coal companies and exploration units,based on the“seismic exploration standard in coal and coalbed methane(MT/T 897-2000)”,the evaluation factors for the verification accuracy of 3D seismic exploration results were defined and unified,and the evaluation criteria for 3D seismic exploration of coal fields under the conventional CDP network(5 m×10 m)were formulated systematically,and the evaluation results were divided into three levels:accurate,more accurate and inaccurate,and discussed with peers.It is easy to carry out academic exchanges under the uniform evaluation scale of 3D seismic exploration results in the future and to promote technological progress in the industry.