Results 281 to 290 of about 141,433 (299)

Three-dimensional simulation of rock breaking efficiency under various impact drilling loads

Arabian Journal of Geosciences, 2020
Percussion drilling is believed to be an efficient way to enhance the drilling performance, compared with the conventional drilling in deep wells, which could be achieved by applying impact loads above the drill bit. The finite simulation is an efficient method to predict the drilling performance when the drill bit interacts with rocks. In contrast, as
Yandong Yang, Hualin Liao, Jilei Niu, Zhen Wang, Junhai Chen   +4 more
openaire   +1 more source

A deep learning-based prediction model for rock-breaking efficiency of milling excavators

Engineering Research Express
Abstract This study proposes a high-precision prediction framework for rock-breaking efficiency in geotechnical engineering, aimed at advancing intelligent construction technologies. This study utilizes Convolutional Neural Network (CNN) to extract deep features-such as edge textures, fracture distributions, and ...
Jingde Wang, Jian Duan, Qingsong Sun, Lu Han, Jian Tang, Jian Li   +5 more
openaire   +1 more source

Optimum spacing and rock breaking efficiency of TBM double disc cutters penetrating in water-soaked mudstone with FDEM

Tunnelling and Underground Space Technology, 2023
Chengzeng Yan, Wenhui Ke
exaly  

Effect of impact impulse parameters on rock breaking efficiency

Soviet mining science, 1973
O. D. Alimov, A. F. Lisovskii
openaire   +1 more source

INNOVATIVE APPROACHES TO DESIGNING HIGHLY EFFICIENT ROCK-BREAKING TOOL

MINING INFORMATIONAL AND ANALYTICAL BULLETIN, 2017
A.Ya. Tretyak, V.V. Popov, A.N. Grossu, K.A. Borisov   +3 more
openaire   +1 more source

Experimental research on laser thermal rock breaking and optimization of the process parameters

International Journal of Rock Mechanics and Minings Sciences, 2022
Haitao Yue
exaly  

Numerical study on rock breaking efficiency of TBM with the consideration of pre-slotting

2022
Jianjun Ma, Wenjie Ding, Junjie Chen, Wanxiang Chen, Yuexiang Lin*   +4 more
openaire   +1 more source

An Optimization Methodology of Cutter-Spacing for Efficient Mechanical Breaking of Jointed Rock Mass

Rock Mechanics and Rock Engineering, 2022
Kanglei Song, Haiqing Yang, Junning Xie, Shivakumar Karekal   +3 more
openaire   +1 more source

A new method to improve rock breaking efficiency by using automatic unloading of bottom hole central stress

Geoenergy Science and Engineering, 2023
Zhichuan Guan, Baoping Lu, Deyong Zou
exaly  

Investigation of rock breaking mechanism with TBM hob under traditional and free-face condition

Engineering Fracture Mechanics, 2021
Xuhui Zhang, Dingbang Hu, Jianmin Li
exaly