This research introduces a laboratory creep test for measuring displacements in anchors embedded in large-scale soft rock samples (745 × 550 × 310 mm) under constant load for long periods. Here, the preliminary theoretical fundamentals that have served for the design of the equipment are detailed, together with its mechanical and geometrical characteristics, defining the test procedure. It has been tested a rock-like material composed of bentonite, cement and water, which has been geotechnically characterized by identification, strength and deformability tests. The specific manufacturing process of the test samples is also defined. Three creep tests have been carried out with durations between forty-six and seventy-five days each. An adequate interpretation of the instantaneous strain obtained in the test has been carried out, exposing two effects that must be considered: the greater ridigity on small strain and the scale effect.

这项研究引入了一种实验室蠕变测试，用于在恒定载荷下长期测量嵌入在大型软岩样品（745×550×310 mm）中的锚的位移。在此，详细介绍了用于设备设计的初步理论基础，以及其机械和几何特性，确定了测试程序。它已经过测试，由膨润土组成的类岩石材料，水泥和水，在岩土工程中已通过鉴定，强度和变形测试进行了表征。还定义了测试样品的特定制造过程。已经执行了三个蠕变测试，每个持续时间在46到75天之间。已经对测试中获得的瞬时应变进行了充分的解释，暴露出必须考虑的两个影响：较小应变时的弹性数大和结垢效应。