Study on the Compressive and Tensile Properties of Gneiss Outcrop of Bozhong 196 Gas Field in China

In this paper, based on the gneiss outcrop of Bozhong 196 gas field in China, uniaxial compression and Brazil splitting tests were conducted by using cores different orientations. The following properties studied: elastic modulus, Poisson’s ratio compressive strength outcrop. tensile peak energy rate results demonstrate following: (1) strength, specimens with horizontal core-taking are greater than those vertical core-taking. (2) horizontally cored 29.688–45.760 GPa, 0.186–0.386, 174.94–147.80 MPa, respectively; 26.541–32.602 0.429–0.476 169.37–134.46 MPa. (3) modulus is 4.93–5.98 GPa. 0.96–2.11 five times that specimens. 5–20 modulus. (4) 14.33–17.55 MPa 2598.67–4049.53 J/m2, respectively. 6.12–9.65 715.74–1515.30 J/m2. (5) There a good linear relationship between gneiss. research can provide scientific reasonable reference for situ fracturing field.