利用浅层地震勘探探测东江老隆大桥桥址的基岩构造

THE EXPLORATION OF DONGJIANG RIVER LAOLONG BRIDGE SITE IN LONGCHUAN COUNTY USING SEISMIC PROSPECTING

利用浅层地震勘探对广东龙川东江老隆大桥桥址进行勘查 ,得到测区基岩面的起伏形态、速度分布以及断层位置。结果表明 ,测区为一条近南北向的断裂沉降带 ,桥址的中心线正好通过其中。从经济与安全的角度出发 。

The prospecting results showed the bedrock interface feature、its velocity structure and fault location. The results also indicat that there is a belt of subside rupture running through the central line of the bridge.So that it is better to reselecte the bridge site in the view point of economy and safety consideration.