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Fracture Systems Caused by Mechanical Indentation in Medium or Hard Rocks

机译：中硬岩石机械压痕引起的断裂系统

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摘要

Fracture systems in brittle rocks induced by indentation are presented. These are based on numerous experimental results. Two models have been developed to account for the experimental observations and elucidate the failure mechanisms induced during indentation. One model concerns the indentation depth and the other describes the length of radial/median cracks remaining in the rock. Equations deduced from both models correlate well with experimental results in the laboratory. Modification of the equations makes it possible to take the fracture systems in the deep underground into consideration. The equations can serve for general use in many medium or hard rocks with different dimensions of indenters.
机译：介绍了压痕引起的脆性岩石断裂系统。这些是基于大量的实验结果。已经开发了两种模型来解释实验观察结果并阐明压痕过程中引起的破坏机理。一种模型涉及压痕深度，另一种模型描述岩石中残留的径向/中部裂缝的长度。从这两个模型推导出的方程与实验室中的实验结果紧密相关。方程的修改使考虑深部地下的裂缝系统成为可能。该方程式可用于具有不同压头尺寸的许多中硬岩石中。

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