... three sampling intervals, the 1.0 mm interval is pointed out the most appropriate one to evaluate the joint roughness. In addition, we evaluated and compared the JRC values of joints within granite specimens that have different mechanical properties and weathering state by two different methods (Z 2...

... Abstract Granite is a strong anisotropic rock affected by distribution of pre-existing microcracks. In various rock engineering applications, it has a significant meaning to understand the influence of internal microcrack distribution on the mechanical properties of rock. In this paper, static...

... strength source parameter model parametric study seismic efficiency estimation Upstream Oil & Gas Efficiency friction angle case study mechanical property computed seismic efficiency shear strength Estimation of Fault Slip-weakening Distance in an Underground Mine A. Sainoki a * and H. S...

... Zhenghong Chen*, Xibing Li and Weng Lei School of Resources and Safety Engineering, Central South University, Changsha, China [email protected] Mechanical properties and failure characteristics of specimens containing a couple of flaws under unloading condition has been...

... in the laboratory. 1. Introduction Rock block displacement to be one of problem on rock mechanics and engineering. The analysis of rock block displacement are mainly related to many parameters, such as the geological structure, pore pressure, rock mechanical properties, seismic load, field stress, and other...

... Changes in mechanical properties due to induced oxidation of lignite AKM Badrul ALAM a*, Noritaka ARAMAKIa, Shuji TAMAMURAa, Akio UENOa, Takuma MURAKAMIa, Yoshiaki FUJIIb and Katsuhiko KANEKOa a Horonobe Research Institute for the Subsurface Environment, NOASTEC, 5-3, Sakae-machi, Horonobe-cho...

... ABSTRACT: The objective existing in-situ stress field and the physical mechanical properties of rock are closely related to the borehole stability in petroleum engineering. However, in present engineering design, rock mass is simply treated as isotropic material. This method may be acceptable...

... such as microstructure characteristics, cation exchange, expansion deformation and also expansion force, heat conduction characteristics and penetration performance. Research results on physical and mechanical properties and features of bentonite under different soil-water conditions are rare. Shen Zhen-yao et al...

... permeability, high absorption, good thermal conductivity, excellent expansion performance and suitable mechanical properties. solid waste management water content shear failure surface dry density buffer material specimen specimen springback certain amount density 1 bentonite compaction...

... parameter complex reservoir mudstone borehole burnt rock mechanical property slope angle strata TransitDevelopmentinRockM chanics Cai,Yeng WanglEd )@2015Taylor FrancisG up London ISBN978·7·138_02730-5Chara teristicsofbumr kndslopes b l tya alysisinL oju m openpit am eYL &T H YangK yLab r t rym...

... and unloading will dramatically increase when the rock sample approaches to the critical state. elasticity modulus critical state damage threshold compressive strength acoustic emission energy response ratio mechanical property peak value Upstream Oil & Gas stress level Reservoir...