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单轴压缩下红砂岩在各种边界条件下的荷载—位移全程试验表明:全程曲线、特别是峰后部分受端部作用影响很大;用裂纹产生和扩展的能量理论对峰后试件—试验机联合系统中能量的转换进行了分析,论证了岩石试件在峰值荷载以后处于稳定破裂的充分条件是[W_R/[C≥[W_m/[C+[W_[/[C,并解释了用试验机刚度效应未能解释的试验结果。
The load-displacement full-scale tests of red sandstone under various boundary conditions under uniaxial compression show that the whole curve, especially the post-peak part, is greatly affected by the end effect; the peak post-peak test piece is generated by the energy theory of crack generation and expansion— The energy conversion in the test machine combined system was analyzed, and the sufficient condition for stable fracture of the rock specimen after peak load was demonstrated [W_R/[C≥[W_m/[C+[W_[/[C, and explained Tester stiffness effects failed to explain the test results.