Non-destructive geophysical crosshole sounding method can be used to control and monitoring the condition of natural and improved soils. This work studies the application of the crosshole sounding method to determine the condition of soils lying in the foundations of sewer collectors and tunnels. The investigation uses crosshole sounding apparatus APZ-1 developed by LLC “Geodiagnostika”. The study considered the results of crosshole sounding of soils at the site of the reconstruction of the Church of The Icon of the Mother of God “Joy of All Who Sorrow” and on the section of buried metro tunnels between “Lesnaya” and “Ploschad Muzhestva” stations in St. Petersburg (Russia). The author postulates that crosshole sounding provides the most accurate information about the foundation soils for making a decision on strengthening them for trouble-free operation of sewer collectors and tunnels.

无损地球物理跨孔测深方法可用于控制和监测天然和改良土壤的状况。这项工作研究了跨孔测深法在确定位于下水道收集器和隧道基础中的土壤状况的应用。调查使用LLC“Geodiagnostika”开发的跨孔测深仪APZ-1。该研究考虑了在“悲伤的所有人的喜悦”圣母圣像教堂重建现场以及“Lesnaya”和“Ploschad Muzhestva”之间的地下地铁隧道部分的土壤跨孔测深结果” 在圣彼得堡（俄罗斯）的车站。