Results 11 to 20 of about 305,148 (261)

Total loads modeling and geological adaptability analysis for mixed soil-rock tunnel boring machines

open access: yesUnderground Space, 2022
Rock-soil interface mixed ground (RSI) is often encountered in tunnel construction. The excavation loads of tunnel boring machines (TBMs) are controlled by the interaction characteristics between TBM and rock/soil layers. The different properties of rock
Wencong Qi   +4 more
doaj   +3 more sources

Pore-Scale Characterization and PNM Simulations of Multiphase Flow in Carbonate Rocks

open access: yesEnergies, 2021
This paper deals with pore-scale two-phase flow simulations in carbonate rock using the pore network method (PNM). This method was used to determine the rock and flow properties of three different rock samples, such as porosity, capillary pressure ...
Haiyang Zhang   +3 more
doaj   +1 more source

Research of Building the Reasonable Mixing Ratio between Waste Rock and Fly Ash as Backfill Material in Mongduong-Cocsau Area, Quang Ninh, Vietnam

open access: yesInżynieria Mineralna, 2023
The coal mining industry in Quang Ninh province is primarily focused on serving thermal power plants which has resulted in a substantial amount of waste rock and ash. This way has not only narrowed the used land but also had a negative impact on the environment.
Phi Hung NGUYEN   +2 more
openaire   +1 more source

Investigation on Energy Evolution and Storage Characteristic of CSTBD Red Sandstone during Mixed-Mode Fracture

open access: yesGeofluids, 2022
To investigate the energy evolution and storage characteristics of the rock during the mixed-mode fracture failure, several single loading-unloading tests under preset different unloading levels were conducted on the cracked straight-through Brazilian ...
Wuxing Wu, Fengqiang Gong
doaj   +1 more source

Estimating pore volume compressibility by spheroidal pore modeling of digital rocks

open access: yesPetroleum Exploration and Development, 2020
: The real pores in digital cores were simplified into three abstractive types, including prolate ellipsoids, oblate ellipsoids and spheroids. The three-dimensional spheroidal-pore model of digital core was established based on mesoscopic mechanical ...
Weibo SUI   +3 more
doaj   +1 more source

Experimental study on basic engineering properties of loess improved by burnt rock

open access: yesScientific Reports, 2023
Modifying the loess foundation effectively solved the deformation and settlement of the building foundation and improved its stability. However, burnt rock-solid waste was often used as filling material and light aggregate, while there were few studies ...
Kai Chen   +4 more
doaj   +1 more source

Evolutionary consequences of behavioral diversity [PDF]

open access: yes, 2016
Iterated games provide a framework to describe social interactions among groups of individuals. Recent work stimulated by the discovery of "zero-determinant" strategies has rapidly expanded our ability to analyze such interactions.
Parsons, Todd L.   +2 more
core   +3 more sources

Comet dust as a mixture of aggregates and solid particles: model consistent with ground-based and space-mission results [PDF]

open access: yes, 2009
The most successful model of comet dust presents comet particles as aggregates of submicron grains. It qualitatively explains the spectral and angular change in the comet brightness and polarization and is consistent with the thermal infrared data and ...
Kimura, H., Kolokolova, L.
core   +2 more sources

Complex examination of the Upper Paleozoic siliciclastic rocks from southern Transdanubia, SW Hungary—Mineralogical, petrographic, and geochemical study [PDF]

open access: yes, 2007
A vertical section of Upper Paleozoic sandstones from southern Transdanubia (Mecsek-Villány area, Tisza mega-unit, Hungary) has been analyzed for major and trace elements, including rare earth elements (REEs).
Á   +35 more
core   +1 more source

Inhibitory mechanism of fly ash on alkali-silica reactivity of siliceous rock fine aggregate: A case study of Yangxi concrete dam

open access: yesCase Studies in Construction Materials, 2023
The fine aggregate of siliceous rock has the advantages of high production efficiency, stable yield and low construction and transportation cost. The Yangxi concrete dam was firstly apply siliceous rock as fine aggregate to a large concrete project of ...
Jianguo Chen   +5 more
doaj   +1 more source

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