Results 81 to 90 of about 102,844 (192)
Laboratory studies of a high-strength roof bolting by means of self-extending mixtures [PDF]
, 2019 Purpose is to analyze parameters of a new method to fasten roof bolts with the help of nonadhesive mixtures extending while hardening along with the development of high expansion pressures. Methods.
Isaienkov, O +3 more
core +1 more source
Initial planetary base construction techniques and machine implementation [PDF]
Conceptual designs of (1) initial planetary base structures, and (2) an unmanned machine to perform the construction of these structures using materials local to the planet are presented.
Crockford, William W.
core +1 more source
Mechanisms of internal friction in soils and rocks
Geotecnia, 1972 Analisam-se os diferentes mecanismos que geram atrito interno de solos e rochas por efeito de fricção, de cunha, de rotação e de rolamento. A partir da cinemática desses mecanismos, relacionam-se os ngulos de atrito gerados com as formas das partículas dos solos ou dos blocos dos maciços rochosos e com a amplitude da distorção sofrida pelo terreno ...
Nascimento, Úlpio, Teixeira, H.
openaire +1 more source
The Cementation Mechanisms and Mechanical Properties of Different Soil–Rock Mixtures–Slurry Cements
MaterialsThis investigation focused on the cementation mechanisms and mechanical properties of soil–rock mixtures–slurry cement (SRM–SC) to ensure the safety of tunnels during operation. SRM–SC specimens were prepared with different types of slurry and rock contents based on an actual slurry injection ratio. The macroscopic level analysis involved measuring the
Jiayong Li, Zuliang Zhong, Hong Zou
openaire +2 more sources
Engineering geology of British rocks and soils : Lias Group [PDF]
, 2012 The report begins with an introduction and a detailed modern assessment of the geology of the Lias Group in terms of both stratigraphy and lithology. The modern lithostratigraphy is placed in the context of the old, and sometimes more familiar, usage ...
Barron, M. +8 more
core
Numerical simulations of materials with micro-structure : limit analysis and homogenization techniques [PDF]
, 2007 Continuum-based numerical methods have played a leading role in the numerical solution of problems in soil and rock mechanics. However, for stratified soils and fractured rocks, a continuum assumption often leads to difficult parameters to define and ...
Lourenço, Paulo B.
core
Applied SciencesFracturing is an indispensable technique in geothermal energy development. Large-sized model tests of different fracturing methods are crucial for evaluating the fracturing effect and extrapolating the results to field applications.
Hengtao Yang +6 more
doaj +1 more source
Applied SciencesIn view of the fact that field monitoring information can more intuitively and accurately reflect the stability state of slopes, this paper takes the warning threshold of slope deformation rate monitoring as the slope stability evaluation standard, and ...
Xiaoyan Wei, Xiuli Zhang
doaj +1 more source
Geomechanics and Geophysics for Geo-Energy and Geo-ResourcesRock alteration leads to the degradation of the physical and mechanical properties of original rock. The spatial variance in the degree of rock alteration significantly influences regional ground stress distribution characteristics.
Hong Zheng +5 more
doaj +1 more source
Journal of Rock Mechanics and Geotechnical EngineeringThe construction of coastal areas generates a substantial volume of waste marine clay (WMC), which poses environmental and safety challenges during the stockpiling process. The improved preparation of WMC as roadbed materials emerges as a crucial pathway
Saiou Fu +7 more
doaj +1 more source