地震反射波法在浅层勘探中的应用  

Application of Seismic Reflection Method in Shallow Layer Prospecting

作　　者：蒋维平 孟宪民 

机构地区：[1]黑龙江省煤田地质局,黑龙江哈尔滨150001

出　　处：《中国煤炭地质》2008年第9期59-60,67,共3页Coal Geology of China

摘　　要：常规多次覆盖反射波法地震勘探难以获得100ms(一般相当于80m)以上的有效地震反射信息,形成浅部地层勘探盲区。为有效解决浅层勘探难题,提出了单道自激自收或点组合小排列施工方法。该方法除对震源输出脉冲宽度、频率特性有要求外,还对震源适应性有较高的要求。实例表明:采用小药量震源激发,点组合小排列接收,可有效划分100ms以内的层位;而单道锤击自激自收反射波法,对地下敷设电缆、城市排水沟、地下管道及人防工程的探测效果明显高于常规地震勘探。The conventional multiple coverage seismic reflection method is hard to acquire effective seismic reflection information above 100ms （commonly equivalent to 80m）, thus a blind zone of shallow layer prospecting. To settle the issue effectively, put forward an operation method of single channel self-exciting and self-receiving or point assembly short arrangement. The method has not only requirements on source output impulse duration and frequency characteristics, but also higher requirement on source adaptability. Practices demonstrated that： to use the small charge shot, point assembly short arrangement receiving can divide layers with lOOms effectively; while the effects of single channel hammer self-exciting and self-receiving method to detect underground cables, urban drainages, pipelines and air-raid shelters are obviously better than conventional seismic prospecting.

关 键 词：小排列接收 自激自收 反射波法 地震勘探 

分 类 号：P631.4[天文地球—地质矿产勘探]