黄土塬、沙漠地区地震勘探技术研究

巨厚的黄土疏松干燥,沉积松散、弹性较差、潜水面较深,地震波能量吸收衰减严重。地震激发条件差,浅表层干扰严重,地震施工条件困难等原因造成了该类型地区信噪比低静校正困难,为改善野外采集资料品质,首先, 对黄土源地区的表层和地下地震地质条件以及干扰波特征进行了分析; 然后, 在改善激发条件方面进行了激发方式、激发岩性等实验,选取最优的激发方式获得高品质,高信噪比地震资料。

Loess tableland, desert region Seismic exploration technology research

The thick loess loose and dry, The sedimentary loose, Less elastic, Groundwater level deeper, Seismic wave energy attenuation. Poor seismic excitation condition, Shallow interfere with serious, Seismic construction conditions difficult to causes such as the low SNR static correction difficult type area, For improving the quality of field collecting data, First of all, Surface layer of the loess source region Potter and underground seismic geological conditions and interference are analyzed; then, In the aspect of improving excitation conditions for stimulating way, Excitation lithology The experiment, Select the optimal excitation method to obtain high quality, High signal to noise ratio of seismic data.