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. Moreover, there were plenty of fossils of corals, brachiopods, echinoderms, mollusks and algae [26]. 3 Materials and methods The study was mainly based on field observation (in northwestern Sichuan basin......
. The rock quality designation (RQD) index in practice [C]// Rock Classification System for Engineering Purposes. Philadelphia: American Society for Testing and Materials, 1988: 91-101. DOI: 10.1520......
Xi-bing. Investigation on the linear energy storage and dissipation laws of rock materials under uniaxial compression [J]. Rock Mechanics and Rock Engineering, 2019, 52(11): 4237-4255. DOI......
]. Elsevier-Health Sciences Division, 2017. [6] GONG Feng-qiang, YAN Jing-yi, LI Xi-bing, WANG Shan-yong. A peak-strength strain energy storage index for bursting proneness of rock materials [J]. International......
and numerical study on splitting failure of brittle solids containing single pore under uniaxial compression[J]. Mechanics of Materials, 2006, 38(1/2): 142-159. [18] TANG C A, WONG R H C, CHAU K T, et al......
, LIU X P, SUN Y F, AN J, ZHANG J, CHEN H C. Construction schedule simulation of a diversion tunnel based on the optimized ventilation time [J]. Journal of Hazardous Materials, 2009, 165(1-3): 933-943......
): 022301. DOI: 10.1115/ 1.4038071. [12] KANG X M, WANG L. Experimental analysis of axial load internal circulation ball screw pair of friction torque and the impact [J]. Applied Mechanics and Materials......
-Element method [C]// International Conference in Construction Materials and Structures. South Africa: University of Johannesburg, 2014: 1331-1341. DOI: https://doi.org/10.1126/science.1249766. [22......
: 10.2138/am-2017-5918. [16] LIN R S, WANG X Y, LEE H S, CHO H K. Hydration and microstructure of cement pastes with calcined hwangtoh clay [J]. Materials, 2019, 12(3): 458-501. DOI: 10.3390/ ma12030458. [17] ZHANG......
potential experiments and FT-IR analysis. 2 Experimental 2.1 Materials Pure mineral samples of chalcopyrite and sphalerite used in this study were respectively obtained from Hubei and Hunan Province, China......