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土的力学指标随含水率变化而变化。勘察报告提供了特定样品的检测统计值。在岩土工程实践中,受外部环境影响若土的含水率发生变化,将使土的抗剪强度发生改变,这是突发性工程事故的主要诱因。目前在工程中缺乏能简便及时监测这种隐形变化过程的方法。该文介绍用中子水分仪观测土层含水率、用负压计观测水土势,进而间接判断土体工程性状的新方法,对预防岩土工程事故有很强的实用性。
Soil mechanics index changes with the change of water content. The survey report provides the test statistics for a particular sample. In geotechnical engineering practice, if the soil moisture content changes due to the external environment, the shear strength of the soil will change, which is the main cause of sudden engineering accidents. At present, there is a lack of methods in the project that can easily and simply monitor this invisible change process. This paper introduces a new method of observing soil moisture content with neutron moisture meter and observing water and soil potential with negative pressure meter, and then indirectly judging soil engineering properties. It is very practical for preventing geotechnical engineering accidents.