干湿循环下岩石力学特性与能量演化规律的实验研究

Experimental Research on the Mechanical Properties and Energy Evolution of Rock under Dry-Wet Cycle

摘要: 矿井地下水库、水力发电、基础工程、海绵城市建设等均会遭遇到岩石干湿循环环境，而干湿循环过程对岩石有劣化作用，因此研究干湿循环后岩石的能量演化规律及其关联机制，对于干湿循环下岩石变形破裂现象的深度理解、岩石工程施工与防护的科学决策等具有重要的科学和工程意义。本文选取花岗岩为主要研究对象，对试样分别经过0 (未干湿循环处理)、1、3、6、10次干湿循环处理后，开展处理后岩样的单轴压缩和能量演化试验，并结合声发射特征参数研究了干湿循环后花岗岩的相关力学特性。

Abstract: Underground water reservoir, hydroelectric power generation, basic engineering, sponge city construction, etc. will encounter the dry and wet cycling environment of rock. However, the process of dry wet cycle can degrade the rock. Therefore, it is of great scientific and engineering significance to study the law of energy evolution and its correlation mechanism of rock under the dry wet cycle for the deep understanding of rock deformation and fracture phenomenon under the dry wet cycle and the scientific decision-making of rock engineering construction and protection. In this paper, granite is selected as the research object. After 0 (without dry and wet cycle treatment), 1, 3, 6 and 10 times of dry and wet cycle, the uniaxial compression and energy evolution tests of rock samples after treatment are carried out, and the mechanical properties of granite after wet dry cycle are summarized combining with the characteristic parameters of acoustic emission.