摘要：The mechanical properties of reservoir rocks are of great significance to the study of rock mechanics, hydraulic fracturing design and reservoir stimulation. The failure mechanism and characteristics of rock under the condition of high temperature hydration have been one of the difficult problems for many scholars. In order to solve this problem, a Molecular dynamics model is used to analyze the mechanism of rock strength degradation. The compressive strength, tensile strength, Young's modulus and Poisson's ratio of quartz crystals with different water content and temperature were quantified using uniaxial tensile and uniaxial compression simulation experiments based on the established single crystal molecular model of quartz. The simulation results show that hydration and high temperature degradation have significant effects on the mechanical strength of rock, and hydration is a major factor leading to the decline of rock strength. In addition, temperature and external loading force make the internal structure of the crystal looser by changing the bond length between Si and O atoms and the angle of Si-O-Si bond. It is also found that the presence of tensile stress will change the distribution of water molecules in the interlayer, making water molecules adsorbed on both sides of the quartz surface. Copyright 2024 ARMA, American Rock Mechanics Association.

ISSN号：/

卷、期、页：58th US Rock Mechanics / Geomechanics Symposium 2024, ARMA 2024, 2024

发表日期：2024-06-23

期刊分区（SCI为中科院分区）：无

收录情况：EI（工程索引）

发表期刊名称：58th US Rock Mechanics / Geomechanics Symposium

通讯作者：刘利,李欣龙,张润青,李永昕,范高建,嵇然

第一作者：赫文豪,史怀忠,熊超

论文类型：会议论文

论文概要：刘利,李欣龙,赫文豪,张润青,李永昕,范高建,嵇然,史怀忠,熊超，Molecular Dynamics Modeling of Effects of Water and Temperature on Rock Strength，58th US Rock Mechanics / Geomechanics Symposium，2024，58th US Rock Mechanics / Geomechanics Symposium 2024, ARMA 2024, 2024

论文题目：Molecular Dynamics Modeling of Effects of Water and Temperature on Rock Strength