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Int J Rock Mech Min Sci Geomech Ab鄄 stracts, 1996, 33(6): 549 [9] Li D Y, Li X B, Li C C. Experimental studies of mechanical properties of two rocks under direct compression and tensile. Chin J Rock Mech Eng, 2010, 29(3): 624 (李地元, 李夕兵, Li C C. 2 种岩石直接拉压作用下的力学 性能试验研究. 岩石力学与工程学报, 2010, 29(3): 624) [10] Wong L N Y, Einstein H H. Crack coalescence in molded gyp鄄 sum and Carrara marble: Part 1. Macroscopic observations and interpretation. Rock Mech Rock Eng, 2009, 42(3): 475 [11] Baud P, Wong T F, Zhu W. Effects of porosity and crack density on the compressive strength of rocks. Int J Rock Mech Min Sci, 2014, 67: 202 [12] Griffiths L, Heap M J, Xu T, et al. The influence of pore geom鄄 etry and orientation on the strength and stiffness of porous rock. J Struct Geol, 2017, 96: 149 [13] Bubeck A, Walker R J, Healy D, et al. Pore geometry as a con鄄 trol on rock strength. Earth Planet Sci Lett, 2017, 457: 38 [14] Schaefer L N, Kendrick J E, Oommen T, et al. Geomechanical rock properties of a basaltic volcano. Front Earth Sci, 2015, 3: 29 [15] Al鄄Harthi A A, Al鄄Amri R M, Shehata W M. The porosity and engineering properties of vesicular basalt in Saudi Arabia. Eng Geol, 1999, 54(3鄄4): 313 [16] 覶anakc覦 H, Baykasog姚lu A, G俟ll俟 H. Prediction of compressive and tensile strength of Gaziantep basalts via neural networks and gene expression programming. Neural Comput Appl, 2009, 18 (8): 1031 [17] Heap M J, Xu T, Chen C F. The influence of porosity and vesi鄄 cle size on the brittle strength of volcanic rocks and magma. Bull Volcanology, 2014, 76(9): 856 [18] Yu Q L, Yang S Q, Ranjith P G, et al. Numerical modeling of jointed rock under compressive loading using X鄄ray computerized tomography. Rock Mech Rock Eng, 2016, 49(3): 877 [19] Ju Y, Yang Y M, Song Z D, et al. A statistical model for porous structure of rocks. Sci China Ser E Technol Sci, 2008, 51(11): 2040 [20] Wang Z M, Kwan A K H, Chan H C. Mesoscopic study of con鄄 crete I: generation of random aggregate structure and finite ele鄄 ment mesh. Comput Struct, 1999, 70(5): 533 [21] Yu Q L. Digital Image Processing Based Numerical Methods for Failure Process Analysis of Rocklike Materials [ Dissertation ]. Shenyang: Northeastern University, 2008 (于庆磊. 基于数字图像的岩石类材料破裂过程分析方法研 究[学位论文]. 沈阳: 东北大学, 2008) [22] Zhao Y S, Meng Q R, Kang T H, et al. Micro鄄CT experimental technology and meso鄄investigation on thermal fracturing character鄄 istics of granite. Chin J Rock Mech Eng, 2008, 27(1): 28 (赵阳升, 孟巧荣, 康天合, 等. 显微 CT 试验技术与花岗岩 热破裂特征的细观研究. 岩石力学与工程学报, 2008, 27 (1): 28) [23] Liang Z Z, Tang C A, Li H X, et al. Numerical simulation of 3鄄 d failure process in heterogeneous rocks. Int J Rock Mech Min Sci, 2004, 41(Suppl 1): 323 [24] Liang Z Z, Xing H, Wang S Y, et al. A three鄄dimensional nu鄄 merical investigation of the fracture of rock specimens containing a pre鄄existing surface flaw. Comput Geotech, 2012, 45: 19 [25] Yu X B, Xie Q, Li X Y, et al. Acoustic emission of rocks under direct tensile, Brazilian and uniaxial compression. Chin J Rock Mech Eng, 2007, 26(1): 137 (余贤斌, 谢强, 李心一, 等. 直接拉伸、劈裂及单轴压缩试 验下岩石的声发射特性. 岩石力学与工程学报, 2007, 26 (1): 137) ·1006·