摘要
构造摩擦热是地质学中的重要基础理论问题。构造摩擦热可使岩石软化，加速岩石的形变作用，还可导致岩石的变质甚至熔融作用，发生同步的地球化学作用。许多内生矿床的形成，都与构造摩擦热有关。本文通过对构造摩擦热的数学计算和分析，认为构造摩擦热的大小与摩擦面两盘岩石的滑动速度和正压应力相关，且滑动速度是决定因素。摩擦力的大小和破裂面与σ１的夹角θ及外力大小有关。在同一应力场中，摩擦热随着θ角而变化。当σ１＝５０ＭＰａ，μ＝１情况下，当θ≈３０°时，单位体积大约可产生１～２℃的升温效应。
Tectonic frictional heat is an important topic of basic theory in geology. During the geological process, tectonic frictional heat can not only speed up the deformation of rocks, but also result in the metamorphism and melting of rocks, bring about synchronic geochemical process. The formation of many endogenous deposits was related with tectonic frictional heat . After the mathematical calculation and analysis on the examples of tectonic frictional heat, the authors present that: tectonic frictional heat varies directly as sliding velocity of both sides of rocks and compressive stress, and sliding velocity is the predominant factor. Tectonic frictional force is related to a angle between the frictional plane and σ 1,and out of measure .Frictional heat varies as change of θ which is angle between σ 1 and frictional plane .There are 1～2℃at frictional plane ,when σ 1 =50MPa ,θ≈30°.
