Where in the slope design later, the topsoil will be peeled off first. From the results of research in the field obtained rock lithology in the form of topsoil, gravel and sand. The planned mining system is open pit mining using the quarry method. Mutiara Timur is a company that is applying for a mining business permit for sirtu commodities in Klampok Village, Tongas District, Probolinggo Regency. Based on the test results above, it shows that rocks that have fractures will break more easily when pressure is applied, compared to compact rocks that have a long time in the uniaxial compressive strength test.ĬV. The test results show the value (compressive strength test 57.76 MPa), (elastic modulus 5250.000MPa), (Poisson ratio 0.05) and the average value of rock mechanical properties test (axial 0.91), (lateral-0.279), and (volumetric 0.252). To find out these differences, laboratory testing was carried out. This analysis is carried out by comparing the rock strength of each sample, both those that have fractures and compact rocks. Rocks that have fractures will break more easily or quickly when pressure is applied compared to compact rocks.
The purpose of this test is to find out how long the rock maintains its strength or elasticity properties when pressure is applied, and to find out the difference between the strength of compact rock and rock that has fractures when pressure is applied. The rock collapse point is a measure of the strength of the rock itself when the rock is no longer able to maintain its elastic properties.
The compressive strength test is one of the technical properties or compressive strength tests that are commonly used in rock mechanics to determine the collapse point or the elasticity of rock against maximum pressure.
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