Analysis of physical properties and mechanics of rocks in the karst region of Pangkep Regency

Abstract

Panaikang, Biraeng Village, Minasate'ne District is one of the villages in the Pangkep karst area which has a topographical morphology with many cracks, fissures, and cavities on the surface. The formation of karst from the process of dissolving water against carbonate rocks. Analysis of physical and mechanical properties is important to know. This study aims to determine the value of porosity, density and rock compressive strength values in the karst region of the Pangkep Regency. The testing of physical and mechanical properties was carried out to obtain rock conditions and quality using engineering methods. The number of samples used 10 rock samples with a minimum distance of each sample - 10 meters using a random method. The results obtained by the rock type at the site are dolomite limestone with a porosity range value of 0-5% and a modified limestone with a porosity range value of 5-50%. Rock density is in the range of values 2.2-2.7 gr/cm3. Rock compressive strength testing shows that the rock in the area has weak strength quality with a range of values of 5-25 MPa and medium strength quality with a value range of 25-50 MPa.