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静力触探密度探测仪是工程地质勘察中极为重要的原位测试手段。现有的静力触探可以测定土的强度,用孔压静力触探可以测定土的水平团结系数,对砂土可以判别液化。但是,土的密度还需要用传统的取土、试验来取得。现试制成功的密度探测仪是与常用静力触探单桥探头组合而成。密度探头是采用同位素铯Cs~137测定土的密度。静力触探密度探测仪可连续测定土的密度、比贯阻力曲线。这种探头可以正确划定地层、判别淤泥质土层位、了解地层垂直变化。经市政局科技成果鉴定认为,填补了我国在本领域中空白,属国内首创。
The static probe density detector is an extremely important in-situ testing method in engineering geological survey. The existing static penetrator can measure the strength of the soil. The hole-static cone penetration test can be used to determine the horizontal unity coefficient of the soil, and the sand can be liquefied. However, the soil density also needs to be obtained by traditional soil extraction and tests. The successful density tester is a combination of a common static probe single bridge probe. The density probe uses isotopes 铯Cs~137 to measure the density of soil. The static penetration density detector can continuously measure the density and specific resistance curve of soil. This kind of probe can correctly delineate the stratum, discriminate the silty soil horizon, and understand the vertical change of the strata. According to the identification of the scientific and technological achievements of the Urban Council, it fills the blank in our country and is a domestic initiative.