Results 11 to 20 of about 117,527 (204)

Engineering Geological Investigation of Jimma Town for Engineering Practice

open access: yesEthiopian Journal of Science and Sustainable Development, 2022
Jimma is one of the major and densely populated towns in Ethiopia. It is located 348.5 km southwest of Addis Ababa. As in many towns of Ethiopia, very little is known about the soil and rock engineering properties and subsurface conditions of the town ...
Mekdes Habtamu Tadele   +2 more
doaj   +1 more source

Stability analysis of deep jointed rock face based on GSI

open access: yesMeikuang Anquan, 2023
In view of the difficulty in selecting mechanical parameters of jointed rock mass, a mechanical model of jointed rock mass considering joint strength is built based on the geological strength index GSI, combined with the damage mechanics principle and ...
SUN Shijie, TIAN Maolin, XIAO Hongtian
doaj   +1 more source

Empirical prediction of blast-induced vibration on adjacent tunnels

open access: yesFrontiers in Ecology and Evolution, 2023
The blast-induced vibration during excavation by the drilling and blasting method has an important impact on the surrounding buildings/structures and auxiliary equipment.
Wenxin Li   +5 more
doaj   +1 more source

The application of vertical electrical sounding in geomechanical recognition of host rock mass of anomaly III of Narigan deposit, Bafgh region, Central Iran zone [PDF]

open access: yesمجله علوم و فنون هسته‌ای, 2023
The electrical method as a geophysical survey can show the geological parameters including fragmentation, rock mass alteration index, saturation percentage and groundwater quality.
S.H. Beheshti Bafqi   +3 more
doaj   +1 more source

Generalization of trends in the influence of geomechanics factors on the choice of operation modes for the fastening system in the preparatory mine workings [PDF]

open access: yes, 2000
Purpose. Substantiation of the mechanism of loading the preparatory mine working support to optimize its deformation-strength characteristics based on the calculation of the stress-strain state of the “massif – support” system.
Chervatiuk, V   +4 more
core   +2 more sources

Geological Strength Index Relationships with the Q-System and Q-Slope

open access: yesSustainability, 2023
The Q-system and Q-slope are empirical methods developed for classifying and assessing rock masses for tunneling, underground mining, and rock slope engineering. Both methods have been used extensively to guide appropriate ground support design for underground excavations and stable angles for rock slopes.
Samad Narimani   +4 more
openaire   +1 more source

Experimental research into the effect of some operation factors and rock properties on the rate of penetration [PDF]

open access: yes, 2020
Purpose. The purpose of this research is to investigate the effect of weight on bit (WOB), rotary speed (RPM), and some rock properties on the rate of penetration (ROP). Methods.
Ali, Mahrous A.M.   +4 more
core   +1 more source

Route selection of deep-lying and hard rock tunnel in the Sichuan-Tibet Railway based on rock burst risk assessment

open access: yesShuiwen dizhi gongcheng dizhi, 2021
The large terrain undulations and strong regional geological structures are the typical characteristics along the Sichuan-Tibet Railway. The high ground stress problem in tunnel construction is extremely complex, especially the rockburst problem in deep ...
Shikuo CHEN   +4 more
doaj   +1 more source

GROUND VIBRATIONS LEVEL CHARACTERIZATION THROUGH THE GEOLOGICAL STRENGTH INDEX (GSI)

open access: yesRudarsko-geološko-naftni Zbornik, 2017
This paper analyses the results of trial, construction and quarry blasting, carried out in sediment rock deposits, mainly limestone and dolomite, at diff erent locations in the Republic of Croatia.
Josip Mesec   +2 more
doaj   +1 more source

Scale-dependence of lithological control on topography: Bedrock channel geometry and catchment morphometry in western Scotland [PDF]

open access: yes, 2010
We propose that a scale-dependent topographic signature of erodibility arises due to fluvial and glacial erosion acting on different parts of the landscape at different times.
Bishop, P.   +3 more
core   +3 more sources

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