山区地震成孔工具研究

A Research on Seismic Drilling Tools for Mountainous Regions

山西省煤炭地质物探测绘院在西部煤炭资源高精度三维地震勘探依托工程—晋城某矿三维地震项目的实施过程中,为了打穿浅层钙质结核层及富含卵砾石的厚坡积物地段,研制了带合金铲头的特制洛阳铲,并对引进的山地钻钻头进行了改进。特制洛阳铲,可快速穿透50cm厚的钙质结核层;改进后的山地钻,成功解决了厚坡积物地段塌孔下药难等成孔激发难题。实践证明,根据地表激发条件,配制合理的成孔工具,可有效保证其激发层位,提高地震资料的分辨率和信噪比。

During the operation of 3D seismic prospecting in a Jincheng coalmine- the western China coal resources high resolution 3D seismic prospecting backing engineering of the Shanxi Provincial Coal Geological, Geophysical Prospecting, Surveying and Mapping Institute, a purpose made alloy top Luoyang space was used in shallow calcareous concretion layer and thick pebbly talus penetrating, and improved imported drill bit of drill rig for mountainous areas as well. The purpose made Luoyang spade can penetrate 50cm thick calcareous concretion layer at a great pace; improved drill rig for mountainous regions has solved hard nuts of collapse in thick talus sector which is hard to charge in and shot. Practices have demonstrated that rational arrangement of drilling tools based on near-surface geologic condition can ensure proper shotpoint and improve seismic data resolution and S/N ratio effectively.