Cutter wear mechanisms in hard rock tunnel boring
Sign Up to like & getrecommendations! Published in 2018 at "Geomechanik Und Tunnelbau"
DOI: 10.1002/geot.201800003
Abstract: Cutter consumption and parameters such as cutter ring wear has a great relevance in the final excavation time and cost in hard rock tunnel boring machines (TBMs), especially in hard rock conditions. Cutter wear involves… read more here.
Keywords: rock tunnel; hard rock; cutter wear; cutter ring ... See more keywords
Are the Standard VS-Kappa Host-to-Target Adjustments the Only Way to Get Consistent Hard-Rock Ground Motion Prediction?
Sign Up to like & getrecommendations! Published in 2019 at "Pure and Applied Geophysics"
DOI: 10.1007/s00024-019-02173-9
Abstract: Site-specific seismic hazard studies involving detailed account of the site response require the prior estimate of the hazard at the local reference bedrock level. As the real characteristics of such local bedrock often correspond to… read more here.
Keywords: response; hard rock; site; host ... See more keywords
Characterization of Hydraulic Fractures Growth During the Äspö Hard Rock Laboratory Experiment (Sweden)
Sign Up to like & getrecommendations! Published in 2017 at "Rock Mechanics and Rock Engineering"
DOI: 10.1007/s00603-017-1285-0
Abstract: A crucial issue to characterize hydraulic fractures is the robust, accurate and automated detection and location of acoustic emissions (AE) associated with the fracture nucleation and growth process. Waveform stacking and coherence analysis techniques are… read more here.
Keywords: hard rock; fractures growth; growth; rock laboratory ... See more keywords
Numerical Investigation of Squeezing in Underground Hard Rock Mines
Sign Up to like & getrecommendations! Published in 2018 at "Rock Mechanics and Rock Engineering"
DOI: 10.1007/s00603-018-1632-9
Abstract: Squeezing ground is one of the major challenges associated with deep, high-stress mining. In underground hard rock mines, these conditions are often a result of the presence of prominent structural features such as foliation inside… read more here.
Keywords: hard rock; underground hard; rock mass; rock ... See more keywords
Ensemble-based stochastic permeability and flow simulation of a sparsely sampled hard-rock aquifer supported by high performance computing
Sign Up to like & getrecommendations! Published in 2020 at "Hydrogeology Journal"
DOI: 10.1007/s10040-020-02163-5
Abstract: Calibrating the heterogeneous permeability distribution of hard-rock aquifers based on sparse data is challenging but crucial for obtaining meaningful groundwater flow models. This study demonstrates the applicability of stochastic sampling of the prior permeability distribution… read more here.
Keywords: uncertainty; hard rock; permeability; simulation ... See more keywords
Applying Rock Engineering Systems Approach for Prediction of Overbreak Produced in Tunnels Driven in Hard Rock
Sign Up to like & getrecommendations! Published in 2019 at "Geotechnical and Geological Engineering"
DOI: 10.1007/s10706-019-01161-z
Abstract: Drilling and blasting is the predominant excavation method of the tunnels driven in hard rock. Overbreak is an undesirable outcome of blasting operation that has a profound effect on the safety and cost of tunnels.… read more here.
Keywords: engineering; driven hard; hard rock; overbreak ... See more keywords
Mechanism of toppling and deformation in hard rock slope: a case of bank slope of Hydropower Station, Qinghai Province, China
Sign Up to like & getrecommendations! Published in 2019 at "Journal of Mountain Science"
DOI: 10.1007/s11629-018-5096-x
Abstract: Recently, various toppling slopes have emerged with the development of hydropower projects in the western mountainous regions of China. The slope on the right bank of the Laxiwa Hydropower Station, located on the mainstream of… read more here.
Keywords: slope; toppling deformation; hard rock; deformation ... See more keywords
Enhancement of groundwater yield by hydrofracturing technique: A case study from crystalline hard rock terrain
Sign Up to like & getrecommendations! Published in 2020 at "Arabian Journal of Geosciences"
DOI: 10.1007/s12517-020-05883-w
Abstract: Hydrofracturing process was developed during the 1940s for improving the yield from oil and gas wells. Later this technique was adopted for water well development. The hydrofracturing process consists of pumping test before and after… read more here.
Keywords: groundwater yield; hard rock; yield; pumping test ... See more keywords
The influences of heating and uniaxial loading on granite subjected to liquid nitrogen cooling
Sign Up to like & getrecommendations! Published in 2020 at "Engineering Geology"
DOI: 10.1016/j.enggeo.2020.105614
Abstract: Abstract Understanding and controlling rock breaking is critical in many geological projects, such as mining, tunneling and other underground engineering projects. Tunnel boring machine (TBM) is widely used in such geological projects owing to its… read more here.
Keywords: temperature; ln2 cooling; hard rock; uniaxial loading ... See more keywords
Natural attenuation of TiO2 nanoparticles in a fractured hard-rock.
Sign Up to like & getrecommendations! Published in 2018 at "Journal of hazardous materials"
DOI: 10.1016/j.jhazmat.2018.07.035
Abstract: Successive transport experiments of TiO2 nanoparticles (NP) suspension through fractured hard-rock column were done in laboratory. A low ionic strength (IS) water (0.8-1.3 10-3 M) at pH ∼4.5 was used, corresponding to the chemical composition… read more here.
Keywords: hard rock; natural attenuation; tio2 nanoparticles; fractured hard ... See more keywords
Rockburst management in Canadian hard rock mines
Sign Up to like & getrecommendations! Published in 2019 at "Journal of Rock Mechanics and Geotechnical Engineering"
DOI: 10.1016/j.jrmge.2019.07.005
Abstract: Abstract Rockburst is a complex mining-induced phenomenon that remains difficult to be quantified. In particular, geological conditions contributing to rockbursts are more variable than those in many conventional engineering approaches. Faults, intact rock properties, and… read more here.
Keywords: hard rock; support systems; support; rockburst management ... See more keywords