温度场中岩石热作用研究初探

岩石是由多种矿物颗粒组成,受热时其内部各种造岩矿物粒子在热学上表现出热膨胀各向异性,便产生了热应力,当热应力超过自身强度极限时,就会产生热破裂,大量的微破裂将会对岩石的弹性和机械破裂性质造成很大的影响,从而影响地下工程的安全与稳定.通过对岩石内部导热微分方程的理论推导研究了岩石的热效应特性,由于温度场理论分析还需要现场测试试验的验证和对比,因此在实际地下岩土工程的实施过程中,还需要开展相关的现场验证试验研究.

The temperature thermal effect of trial in rock

Rock is composition of a variety of mineral grain, when heated the internal various mineral particles in thermal dis ploys the thermal expansion anisotropy,they generate heat stress,when thermal stress more than their own strength limit, can produce thermal fracture,a large nmnber of micro fracture of rock will be elastic and mechanical fracture properties have a larger impact,which affects the safety and stability of underground engineering. Through the rock internal heat conduction differential equation theory studies the thermal effect of the rock, due to the temperature field theory analysis also need to field test validation and comparison, therefore, in the actual tmderground geoteehnieal engineering implementation process,also need to carry out relevant on-site validation test research.