Results 241 to 250 of about 380,756 (310)

Application of pre-splitting blasting roof-cutting pressure relief technology for roadway protection under hard roof. [PDF]

Sci Rep
Li Y, Chang G, Hu D, Song W.
europepmc   +1 more source

Quantitative Elemental Oxides Analysis of Rock Cuttings Using Laser-Induced Breakdown Spectroscopy Coupled with Bayesian Optimization and Support Vector Machine. [PDF]

ACS Omega
Abu Alsaud S, Swanson A.
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Cerchar abrasiveness index prediction based on rock properties leveraging hybrid soft computing techniques. [PDF]

Sci Rep
Rouhani MM, Dolatshahi A, Hasanipanah M, Fissha Y, Cheepurupalli NR, Saidani T.   +5 more
europepmc   +1 more source

Rotary cutting test on rock-breaking mechanism and efficiency of milled-tooth rolling cutters for shaft sinking by drilling methods. [PDF]

Sci Rep
Wang X, Cheng H, Lin J, Yao Z, Guo L, Zhang L.   +5 more
europepmc   +1 more source

Influence of kinematic parameters and rock properties on the cutting process with ODC based on discrete element method. [PDF]

Sci Rep
Li X, Wang S, Meng Q.
europepmc   +1 more source

Experimental study on the performance of concrete linear cutting by high pressure water jet. [PDF]

Sci Rep
Zhang L, Lu J, Li H, Li B.
europepmc   +1 more source

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ROCK CUTTING BY LASER

Proceedings of Fall Meeting of the Society of Petroleum Engineers of AIME, 1971
Introduction A recent study of laser-assisted mechanical rock tunneling, conducted at the United Aircraft Research Laboratories under Department of Transportation sponsorship, had as a goal the investigation of laser-assisted mechanical rock fracture for use in tunneling machines boring in extremely hard rock.
Jeffrey P. Carstens, Clyde O. Brown
openaire   +1 more source

Rock cutting by electric pulse method

Izvestiya vysshikh uchebnykh zavedenii. Fizika, 2022
The work is devoted to the development of an electric pulse method for processing rocks and other solid dielectric and semiconducting materials. For the first time, experimental studies of the electric pulse method of cutting rocks in water were carried out using a high-voltage pulse generator with a pulse repetition rate of up to 25 impulses per ...
M. Yu. Zhurkov, S. Yu. Datskevich, M. V. Zhuravlev, A. S. Yudin   +3 more
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Hyperbaric Rock Cutting

Volume 4: Offshore Geotechnics; Ronald W. Yeung Honoring Symposium on Offshore and Ship Hydrodynamics, 2012
Under atmospheric conditions rock cutting is mostly brittle; either based on tensile cracks or based on shear cracks, although ductile cutting is possible. It is known from the drilling industry that under very high hydrostatic pressures often a sort of ductile cutting process occurs.
Sape A. Miedema, Djurre Zijsling
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Linear Rock Cutting with SMART*CUT Picks

Applied Mechanics and Materials, 2013
The short life due to heavy wear is a bottleneck that limits the usage of mechanical excavators for hard rock cutting. Thermally stable diamond composite (TSDC) tipped cutting tools have the main advantages of good thermal stability, high wear resistance and ability to mine harder deposit compared to the conventional tungsten carbide (WC) tipped ...
Wen Shao, Xing Sheng Li, Yong Sun, Han Huang   +3 more
openaire   +1 more source