摘要
传统路基物探勘察主要依靠钻孔取样,对所得试样进行分析,确定地下土层的状态及具体深度。但对地质较复杂的多山地区或需要钻孔深度较深的条件下,钻孔取样成本昂贵,且经常因农田或其他限制原因,无法实现钻探等破坏性勘探工作。有鉴于此,利用应力波测试的便捷手段,结合面波、地震映像等不同测试方法,对路基下部土层具体分层情况开展研究,确定具体分层深度及固定深度范围内土体特性,并将测试数据与钻探结果进行对比分析,验证应力波无损测试方法的可行性。
The traditional method of subgrade geophysical prospecting and exploring was drilling and sampling test. By analyzing the test sample,the state and depth of underground soil layer were confirmed.But the cost of traditional method was expensive in complex geological and mountainous area which needs deeper drilling hole. Besides,the destructive exploration job was often forbidden for the reason of farmland or other restrictive conditions. For this reason,the convenient stress wave test measures were adopted,the methods of surface wave test and image test were combined to study the state of subgrade soil layers. Then the depth of soil layers and the soil characteristics in fixed depth range were confirmed. The stress wave test data were comparatively analyzed with the drilling test results. The feasibility of nondestructive stress wave test was verified. The cost of soil layers exploration will be considerably reduced.
引文
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