昌都城区浅层地震勘探分析

ANALYSIS ON SHALLOW SEISMIC EXPLORATION IN CHAMDO CITY

为了查明昌都市城区第四系覆盖区厚度、隐伏断裂带的位置和隐伏断裂带的上断点埋深及断裂带活动性,在昌都市城区布设4条浅层反射波法地震勘探测线,总勘探长度3 km。CX-1线位于国道317,探测出两条断层,F11和F12;CX-2线位于昌都中路,探测出三条断层,F21、F22和F23;CX-3线位于马草坝路,探测出四条断层F31、F32、F33和F34;CX-4线位于昌都西路,探测出五条断层F41、F42、F43、F44和F45均为,以上14条断层都为非活动性断裂,每条断裂均位于基岩内部,没有错断第四系覆盖层,均为前第四纪断层。下一步将通过后期收集到的深部钻孔资料、断层排钻勘探资料以及地表地震地质调查资料对解释结果进行补充完善。

In order to find out the thickness of the Quaternary coverage area,the location of the hidden fault zone,the burying depth of the upper fault of the hidden fault zone and the activity of the fault zone in the urban area of Chamdo City,four shallow reflection wave seismic exploration surveys were deployed in the urban area of Chamdo City.Line with a total exploration length of 3 km.Line CX-1 is located on National Highway 317 and detected two faults,F11 and F12;Line CX-2 is located on Chamdo Middle Road and detected three faults,F21,F22 and F23;Line CX-3 is located on Macaoba Road,and four faults have been detected.Faults F31,F32,F33 and F34;CX-4 line is located on Chamdo West Road.Five faults F41,F42,F43,F44 and F45 were detected.The above 14 faults are all inactive faults,and each fault is located Inside the bedrock,there is no discontinuous Quaternary overburden,all of which are pre-quaternary faults.In the next step,the interpretation results will be supplemented and improved by the deep drilling data,fault drilling exploration data and surface seismic and geological survey data collected later.