提高煤田地震勘探采集质量的主要因素探讨

随着煤田勘探工作的不断深化，对地震勘探成果提出了更高的要求，需要大幅度提高野外采集质量。在勘探实践中，从表层结构、环境噪音、激发参数、施工方法等不同侧面探讨了对采集质量的影响程度；采取了大密度岩性探井、避开和减少环境噪音影响及提高勘探频率等手段，使采集质量大为提高，主煤层频率达70~80Hz，为确定煤层厚度、研究煤层信息提供了基础。

The major factors affecting the quality of field data in coal seismic prospecting

With the deepening of coal seismic prospecting, the demands on higher quality seismic data are increasing, which in turn requires to greatly increase the quality of field data. From the practical point of view, this paper discussed the aspects of coal seismic prospecting, including near surface structure, ambient noise, shooting parameters, operation methods, etc. The quality of field data was improved by adopting means such as high dense lithological exploratory wells, avoiding and eliminating the effects of ambient noises, and increasing frequency. The frequency of the main coal seam can reach to 70~80Hz on the resulted data.