Autonomous robotic rock breaking using a real‐time 3D visual perception system
Sign Up to like & getrecommendations! Published in 2021 at "Journal of Field Robotics"
DOI: 10.1002/rob.22022
Abstract: Crushing of blasted ore is an essential phase in extraction of valuable minerals in mining industry. It is typically performed in multiple stages with each stage producing finer fragmentation. Performance and throughput of the first… read more here.
Keywords: system; visual perception; autonomous robotic; perception system ... See more keywords
Experimental Investigation of Hard Rock Breaking Using a Conical Pick Assisted by Abrasive Water Jet
Sign Up to like & getrecommendations! Published in 2020 at "Rock Mechanics and Rock Engineering"
DOI: 10.1007/s00603-020-02168-2
Abstract: Rock breaking using conical picks is a complex process affected by several factors; its performance is directly related to the excavation rate of rock tunnels, which is important in terms of the economic benefits and… read more here.
Keywords: water; rock breaking; conical pick; rock ... See more keywords
Theoretical prediction of wear of disc cutters in tunnel boring machine and its application
Sign Up to like & getrecommendations! Published in 2019 at "Journal of Rock Mechanics and Geotechnical Engineering"
DOI: 10.1016/j.jrmge.2018.05.006
Abstract: Abstract Predicting the cutter consumption and the exact time to replace the worn-out cutters in tunneling projects constructed with tunnel boring machine (TBM) is always a challenging issue. In this paper, we focus on the… read more here.
Keywords: rock breaking; boring machine; tunnel boring; disc cutters ... See more keywords
Working mechanism and rock-breaking characteristics of coring drill bit
Sign Up to like & getrecommendations! Published in 2018 at "Journal of Petroleum Science and Engineering"
DOI: 10.1016/j.petrol.2017.12.047
Abstract: Abstract For improving the rate of penetration of the complex well structure and performance of the coring drill bit, this paper is to investigate a new type of coring drill bit that generates small-diameter core… read more here.
Keywords: mechanism; coring drill; bit; rock breaking ... See more keywords
Theoretical modeling and experimental study of rock-breaking depth in particle jet impact drilling process
Sign Up to like & getrecommendations! Published in 2019 at "Journal of Petroleum Science and Engineering"
DOI: 10.1016/j.petrol.2019.106419
Abstract: Abstract Particle jet impact drilling technology is an efficient method to improve rock-breaking speed by high-speed particles and water-jet impact. The process and damage stage of rock-breaking by combined impact of high-speed water-jet and particles… read more here.
Keywords: rock breaking; jet; jet impact; particle ... See more keywords
Experimental investigation on the flow and rock breaking characteristics of supercritical carbon dioxide jets
Sign Up to like & getrecommendations! Published in 2020 at "Journal of Petroleum Science and Engineering"
DOI: 10.1016/j.petrol.2019.106735
Abstract: Abstract Supercritical carbon dioxide (SC-CO2) jets are of increasing interest in drilling and completion engineering due to their superiority over water jets. To understand the nature of SC-CO2 jets and improve performance, the flow characteristics… read more here.
Keywords: rock breaking; jet; co2 jets; flow ... See more keywords
Numerical research on the dynamic rock-breaking process of impact drilling with multi-nozzle water jets
Sign Up to like & getrecommendations! Published in 2021 at "Journal of Petroleum Science and Engineering"
DOI: 10.1016/j.petrol.2021.109145
Abstract: Abstract Based on the arbitrary Lagrangian-Eulerian finite element method (ALE-FEM), a coupling model for simulating the rock mass destruction process under the impact of a high-pressure water jet was established. Through the analysis of multi-nozzle… read more here.
Keywords: rock breaking; water; impact; rock ... See more keywords
Experimental study on rock-breaking performance of water jets generated by self-rotatory bit and rock failure mechanism
Sign Up to like & getrecommendations! Published in 2019 at "Powder Technology"
DOI: 10.1016/j.powtec.2019.01.078
Abstract: Abstract Tree-type borehole drilling and volume fracturing in underground coal mines is a new method for improving the homogeneous permeability of coal seam. A self-rotatory bit is a potentially efficient bit, which can improve the… read more here.
Keywords: self rotatory; rock breaking; water; rotatory bit ... See more keywords
Mechanism of drilling rate improvement using high-pressure liquid nitrogen jet
Sign Up to like & getrecommendations! Published in 2019 at "Petroleum Exploration and Development"
DOI: 10.1016/s1876-3804(19)60239-9
Abstract: Abstract To address the high rock strength and low drilling rate issues in deep oil/gas and geothermal exploitation, we performed mechanical property tests on three kinds of rock samples (granite, shale and sandstone) subjected to… read more here.
Keywords: rock breaking; ln2 jet; drilling rate; jet ... See more keywords
Mechanistic Study of a Microwave Field-Controlled Static Crushing Agent for Efficient Rock Breaking
Sign Up to like & getrecommendations! Published in 2022 at "ACS Omega"
DOI: 10.1021/acsomega.2c03598
Abstract: The long reaction time and uncontrollable reaction process of the swelling agent in the process of rock breaking by static crushing agent lead to unsatisfactory efficiency and effect of rock breaking. This paper uses physical… read more here.
Keywords: static crushing; reaction; rock breaking; agent ... See more keywords
Numerical Investigation of Rock Breaking Mechanism With Supercritical Carbon Dioxide Jet by SPH-FEM Approach
Sign Up to like & getrecommendations! Published in 2019 at "IEEE Access"
DOI: 10.1109/access.2019.2913172
Abstract: As a novel technology in the field of petroleum exploitation, rock breaking with supercritical carbon dioxide (SC-CO2) has considerable social and economic benefits. To investigate the rock breaking mechanism under SC-CO2 jet impacting in terms… read more here.
Keywords: co2; rock breaking; jet; rock ... See more keywords