论文部分内容阅读
本文首次提出检测土体工程(如堤坝、路基等)中存在的孔洞隐患问题,并从理论上探讨了根据电场畸变特征进行检测的可能性,建立了理想化模型。对均匀电导率的土体中有球形孔的理想模型,通过解三维拉普拉斯方程(?)~2U=0的边值问题,分析了空间电场的电位分布特征,得出可从土体表面进行量测判别的准则。设想的数字例表明:可以测出土体内4.0m。深处约0.2m大小的孔洞。若配合电子计算机,有可能实地检测。
This paper first proposed the detection of hidden problems of holes in soil engineering such as dams and embankments. The possibility of detecting based on the characteristics of electric field distortion was discussed theoretically and an idealized model was established. For the ideal model with spherical holes in uniform conductivity soil, the potential distribution characteristics of the space electric field are analyzed by solving the boundary value problem of Laplace equation (2) = 2U = 0, Surface measurement criteria for the determination. Imagine the digital example shows: can measure the soil within 4.0m. Deep hole about 0.2m in size. If with the computer, it is possible field testing.