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地热开发及高放核废料深层地下处置等高温岩石工程均涉及高温环境下的岩石尤其是岩浆岩的物理力学性质问题。以闪长岩为研究对象,通过测量岩样热处理前后的物理指标,得出了温度对闪长岩物性的影响关系。研究表明:1600℃为温度对闪长岩物性影响的阈值;2800℃时岩石结构开始破坏,1000℃时结构构造完全被破坏;3高温对闪长岩结构构造的破坏主要表现在大部分矿物热破裂、石英边界变得模糊、长石发生蚀变;4密度与纵波波速均随温度增加而降低。
Geothermal development and deep subsoil disposal of high-level nuclear waste are involved in the physical and mechanical properties of rocks, especially magmatic rocks, at high temperature. Taking diorite as the research object, the influence of temperature on the physical properties of diorite was obtained by measuring the physical indexes before and after the heat treatment. The results show that the influence of temperature on the physical property of diorite at 1600 ℃ is the threshold value. The rock structure begins to deteriorate at 2800 ℃, and the structure is completely destroyed at 1000 ℃. The destruction of diorite structure at high temperature mainly occurs in most of the mineral heat Rupture, the quartz boundary became fuzzy, feldspar alteration; 4 density and longitudinal wave velocity decreases with increasing temperature.