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为进一步探索黄土山地区地震采集的有效技术方法,本文以鄂尔多斯盆地苏里格南为例,在综合研究该区激发因素、接收因素和仪器参数的基础上,进行了大量的野外试验对比分析.结果表明,采用如下技术可获得满意的采集效果:1)针对含水黄土及胶泥等好的激发层位,单井小药量3～4kg、9～13口多井组合激发技术;2)4212.5m的大偏移距,2～3线的多线数,25m的小道距,120～160次的高覆盖次数,20个检波器线性组合检波等接收技术;3)采用90dB以上大动态范围,大增益,采样间隔1ms的高采样率,采样时间5s的长记录时间的仪器采集参数.
In order to further explore effective techniques for seismic acquisition in the Loess Plateau, this paper takes a case study of the Sulige South of Ordos Basin. Based on a comprehensive study of the excitation, receiving factors and instrument parameters in this area, a large number of field experiments were conducted. The results show that the following techniques can be used to obtain satisfactory results: 1) Aiming at the favorable excitation layers of aquiferous loess and clay, single-well small dosage 3 ~ 4kg and 9 ~ 13 multi-well combination excitation techniques; 2) 4212.5m Of the large offset, 2 to 3 lines of multi-line number, 25m of road spacing, 120 to 160 times the number of high coverage, 20 detectors linear combination detection and other receiving technology; 3) the use of more than 90dB large dynamic range, large Gain, sampling interval 1ms high sampling rate, sampling time 5s long recording time of the instrument acquisition parameters.