船载多功能渗透仪及试验方法

Shipboard multifunctional permeameter and test method

在水运工程中,土的渗透系数是重要设计指标,工程意义重大。目前,被广泛应用的渗透系数测定方法具有局限性,其智能化、精准性、可操作性及环境适应性亟待提高。为了解决此问题,研制了一套船载多功能渗透仪,并在曹妃甸某海上勘察项目进行应用的对比试验。结果表明,该渗透仪不仅适用于船舶晃动的环境,还采用自动化、智能化设计,使其能够在实验室内模拟土体原位应力状态的条件下测定土样的渗透系数;不仅具有操作方便、测试精准、自动化程度高等优点,并且转变仪器的使用方法还可以测试土的静止侧压力系数。

In the port and waterway engineering,the permeability coefficient of soil is an important design index,which is of great significance in practical engineering.At present,the widely used test methods of permeability coefficient have limitations,the intelligent,accuracy,operability and environmental adaptability need to be improved.To solve this problem,we develop a set of shipboard multifunctional permeameter,and test and compare the application of this permeameter on a marine geological survey project in Caofeidian.The results show that the permeameter can not only suitable for ship shaking environment,but also can measure permeability coefficient under the condition of simulating in-situ stress state of soil in laboratory by adopting automatic and intelligent design.The shipboard multifunctional permeameter is convenient to operate,high degree of accuracy and automation,and the coefficient of soil pressure at rest can be measured by changing test method.