ISO 22476-11:2017确立了平板膨胀计试验的设备要求、执行和报告指南。 注:根据EN 1997？1和EN 1997？2，本文件满足作为岩土工程勘察和试验一部分的平板膨胀计试验要求。 基本的平板膨胀计试验包括将一个叶片形钢探针垂直插入土壤中，该探针带有一个薄的可膨胀圆形钢膜，安装在一面上，并在选定的深度间隔内测定两个压力:当膜与叶片齐平时，土壤对膜施加的接触压力，以及随后，当膜的中心位移达到1.10 mm时施加的压力。 扁铲侧胀试验的结果主要用于获取土壤地层学、原位应力状态、变形特性和抗剪强度方面的信息。它还用于检测粘土中的滑动面。平板膨胀仪试验最适用于粘土、淤泥和砂，其中颗粒比膜的大小小。

ISO 22476-11:2017 establishes guidelines for the equipment requirements, execution of and reporting on flat dilatometer tests. NOTE This document fulfils the requirements for flat dilatometer tests as part of the geotechnical investigation and testing according to EN 1997？1 and EN 1997？2. The basic flat dilatometer test consists of inserting vertically into the soil a blade-shaped steel probe with a thin expandable circular steel membrane mounted flush on one face and determining two pressures at selected depth intervals: the contact pressure exerted by the soil against the membrane when the membrane is flush with the blade and, subsequently, the pressure exerted when the central displacement of the membrane reaches 1,10 mm. Results of flat dilatometer tests are used mostly to obtain information on soil stratigraphy, in situ state of stress, deformation properties and shear strength. It is also used to detect slip surfaces in clays. The flat dilatometer test is most applicable to clays, silts and sands, where particles are small compared to the size of the membrane.