On the Relationship between Strength and Point Load of Red Mudstone

Jian Mei
unpublished
Through the establishment of a linear relationship between the rock point load strength and uniaxial compressive strength to get the rock point load strength more easily is a better method to determine the rock uniaxial compressive. But because the linear relation has a superior regional characteristic, every single place has its own experienced formula .So, in order to get the linear relationship between rock point load strength and uniaxial compressive strength in Sichuan area, in this paper,
more » ... rea, in this paper, through the indoor point loading strength test and uniaxial compressive strength test of red mudstone specimen in Sichuan , we get a statistical data, and in this data, we found that in point loading strength test as the usage of loading methods change, the results are different.In general, the axial loading sample > irregular loading sample > radial loading sample. Therefore, in order to get a more comprehensive regional and empirical formula, we respectively established a linear relationship between the point load strength and uniaxial compressive strength of the irregular sample loading, the axial load and the radial load, which provides a good reference for the division of the hard degree and the evaluation of the quality of red mudstone in Sichuan area.
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