黄土塬区煤田三维采区地震勘探采集技术在王家岭矿区的应用

王家岭矿区属黄土塬地貌，各种干扰波十分发育，地震波吸收、衰减严重，主要煤层埋藏浅、层数多、小构造发育，常规煤田地震采集方法获得的地震资料信噪比和分辨率较低，难以达到采区地震勘探的“三高”要求。针对王家岭矿区实际特点，在精细调查浅表层黄土速度分层结构的基础上，综合采用逐点设计井深、震／检联合组合、低频检波器接收、大偏移距／高覆盖观测系统等关键采集技术，有效提高了地震资料信噪比与分辨率，获得了连续性较好的下组煤层反射波，为精细构造识别与岩性研究奠定了基础。

Application of Coalfield 3D Winning District Seismic Prospecting Data Acquisition Technology in Wangjialing Mine Area Loess Tableland

The Wangjialing mine area has a loess tableland landform, also very developed various seismic disturbing waves, and serious seismic wave absorption and attenuation. Main coal seams have features of shallow buried depth, multiple seams, developed minor structures, thus conventional coalfield seismic acquisition method can only acquire low signal-noise ratio and low resolution, hardly to reach seismic prospecting ＂3 High＂ （high signal-noise ratio, resolution and fidelity） requirement. In allusion to Wangjialing area actual characteristics, on the basis of careful survey of near-surface loess velocity layering structure, using integrated key acquisition techniques of well depth roll-along design, source/geophone associated combination, low frequency geophone receiving, large offset/wide coverage field setup, effectively improved seismic data signal-noise ratio and resolution, obtained good continuity reflection of lower coal group, thus laid a foundation for delicate structure identifying and lithologic study.