The critical damage point of the red-bed soft rock percolation phenomenon can be described as threshold. At present, there are insufficient theoretical and experimental studies on threshold rock. In combination with analysis, compression experiment numerical simulation, destruction studied in this paper. was obtained by constructing a renormalization group model Based mechanics theory, characte...

the concept of soft sets, introduced by molodtsov [20] is a mathematicaltool for dealing with uncertainties, that is free from the difficultiesthat have troubled the traditional theoretical approaches. in this paper, weapply the notion of the soft sets of molodtsov to the theory of hilbert algebras.the notion of soft hilbert (abysmal and deductive) algebras, soft subalgebras,soft abysms and sof...

Large deformation of surrounding rock makes the internal space a tunnel cannot meet requirements normal use after support, even leads to instability and destruction structure. In order optimize parameters primary support control rock, field tests numerical simulations are carried out. Based on engineering geological conditions monitoring data four important creep improved Burgers model inversed...

Uniaxial compressive and Brazilian tensile strengths (UCS and BTS) of rocks are considered important properties in the design of most the geotechnical projects that interact with rock such as slope stability and underground excavation. Measuring UCS and BTS using standard laboratory tests are time consuming, tedious and expensive. Moreover, it requires a large number of well-prepared rock cores...