Results 31 to 40 of about 141,212 (290)
Improving the efficiency of blasting operations in mines with the help of emulsion explosives [PDF]
, 2018 Purpose. To improve the efficiency of blasting operations in mines taking into consideration the upgrading of equipment used to charge blastholes as well as application of high-productive mining equipment of new generation. Methods.
Lyashenko, V +3 more
core +1 more source
Simulation of Downhole Rock-Breaking Characteristics of PDC Bit Composite Impact
Shiyou jixie, 2023 To compare the rock-breaking performances of various impact drilling techniques,a single-PDC-cutter rock impact model was built using the ABAQUS/Explicit module to study the rock-breaking characteristics of a single PDC cutter in cases of no impact,axial
Lei Yuqi +6 more
doaj
IOP Conference Series: Earth and Environmental Science, 2021 Abstract Tearing cutters are generally applied to break rocks when shield tunnelling in the strata with large size boulders. To improve rock breaking efficiency, the processes of tearing cutter impacting rock model are simulated, and the effects of cutter mass, impact velocity and spacings on specific energy of rock breaking are studied.
Jinguo Cheng +4 more
openaire +1 more source
Method for calculation of drilling-and-blasting operations parameters for emulsion explosives [PDF]
, 2019 Purpose. Development of a new method for calculation of drilling-and-blasting operations parameters during underground mining with application of emulsion explosives taking into account their energy characteristics as well as physical and mechanical ...
Khomenko, O +3 more
core +1 more source
A modern vision of simulation modelling in mining and near mining activity [PDF]
, 2018 The paper represents the creation of the software simulation system, which reproduce the basic processes of mining and near production. It presents the consideration of such systems for both traditional and non-traditional
Cabana, Edgar +12 more
core +1 more source
Energy Reports, 2023 Geothermal reservoir rocks have the characteristics of high stress, high hardness and high abrasiveness, which makes the drilling rate low and the drilling cost high, and hinders the application of geothermal energy. Improving drilling efficiency in hard
Jian Huang +6 more
doaj +1 more source
Improving rock classification in terms of explosivity [PDF]
, 2019 Purpose. To improve rock classification in terms of explosivity relying upon the detailed analysis of characteristics of rating classifications available in the Russian Federation and in the world. Methods.
Kirsanov, A +5 more
core +1 more source
Shiyou jixie, 2021 The research on rock breaking mechanism of special-shaped non-planar PDC cutter is relatively scarce, and the research on domestic prismatic PDC cutter is even scarcer.
Wei Xiuyan +5 more
doaj
Numerical Simulations and Experiments on Single-Tooth Rock-Breaking
Machines, 2022 The rock-breaking efficiency of a drilling tool directly affects the production costs and progress of foundation construction. It is essential to understand the mechanism of mechanical rock-breaking to improve rock-breaking efficiency.
Heyuqiu Li +5 more
doaj +1 more source
New development of efficient rock breaking technology with diamond bit
Jin'gangshi yu moliao moju gongcheng, 2022 Diamond bit is an important tool for drilling. In recent years, with the application of new composite materials and the continuous progress in precision machining technology, combined with the continuous innovation of drilling equipment, diamond bits have achieved rapid development.
Lina SHEN +5 more
openaire +1 more source