Results 71 to 80 of about 877,348 (312)

An optimizing microseismic method for rock burst early warning based on mining production process

Deep Underground Science and Engineering, EarlyView.
A classification early warning method of rock burst based on hourly microseismic data is proposed, which can be combined with the on‐site production process to provide more timely warning. Abstract Microseismic (MS) events have been reported in nearly every coal mining country, which could well lead to rock burst in underground coal mines.
Zepeng Han, Linming Dou, Wu Cai, Mingbo Chi, Guojun Xi, Shuai Chen, Biao Jiao   +6 more
wiley   +1 more source

Erratum to “Modern experience of low-coal seams underground mining in Ukraine, [Int. J. Min. Sci. Technol. 28 (2018) 917–923]”

International Journal of Mining Science and Technology, 2021
Mykhailo V. Petlovanyi, Vasyl H. Lozynskyi, Pavlo B. Saik, Kateryna S. Sai   +3 more
doaj   +1 more source

Miner using a jackhammer underground, London Mining & Milling Company.

, 1940
Donor: Colorado Mining Association.Photographed by Thomas Barbre.A miner operates a jackhammer in a stope underground at the mine, London Mining & Milling Company, Alma District, Alma, Park County. Caption reads: "London Mining & Milling Co., Alma, Colo.
Barbre, Thomas
core  

A rock brittleness index based on the postpeak energy release rate and damage surface characteristics for brittle hard rock

Deep Underground Science and Engineering, EarlyView.
This study examines energy evolution in rock rupture via triaxial direct shear tests, exploring the impact of confining pressure and temperature on fracture surface randomness. A novel energy‐based brittleness index is proposed, validated experimentally, and compared with existing methods for reliability and accuracy.
Biao Wang, Zaobao Liu, Jing Xue, Bo Lu, Wei Zeng, Dengke Zhang   +5 more
wiley   +1 more source

A New Unified Solution for Circular Tunnel Based on a Four-Stage Constitutive Model considering the Intermediate Principal Stress

Advances in Civil Engineering, 2018
Based on the triaxial test, the elasto-perfectly plastic strain-softening damage model (EPSDM) is proposed as a new four-stage constitutive model. Compared with traditional models, such as the elasto-brittle-plastic model (EBM), elasto-strain-softening ...
Liang Chen, Xianbiao Mao, Yanlong Chen, Ming Li, Yang Hao, Ding Liu   +5 more
doaj   +1 more source

Study on Characteristic and Energy of Argillaceous Weakly Cemented Rock under Dynamic Loading by Hopkinson Bar Experiment

Energies, 2020
To study the mechanical properties of argillaceous weakly cemented rock under dynamic loading, a sample reconstituted and graded loading scheme is firstly designed, and then the reorganization rock sample is used as the research object. Using a Hopkinson
Lingdong Meng, Lijun Han, Qingbin Meng, Kexiang Liu, Maolin Tian, Hexuan Zhu   +5 more
doaj   +1 more source

Effective Factors Investigation in Choice Between Surface and Underground Mining

, 2007
Under similar conditions, surface mining is generally regarded to be more advantageous than underground mining. In the selection between surface and underground exploitation methods, there are a number of most significant factors must be briefly studied ...
Oraee, Kazem, Shahriar, Kourosh, Bakhtavar, Ezzeddin   +2 more
core  

Bilingual Corpus of Underground Mining (ELEXIS)

, 2020
PodzemniRadovi-sr-en, dvojezični poravnati korpus radova iz oblasti rudarstva. Undeground-mining-sr-en: bilingual texts from the Underground Mining Engineering journal (55 papers from 8 issues), aligned at the sentence level (4831 translation units ...
Tomašević, Aleksandra, Stanković, Ranka, Škorić, Mihailo   +2 more
core   +1 more source

Modeling and experimental validation of bolt–grout bond–slip behavior for deep underground excavation support

Deep Underground Science and Engineering, EarlyView.
A novel shear‐lag model, validated by pull‐out tests, incorporates a constant bond stress stage to predict the complete load–displacement response of grouted rock bolts, providing a new tool for optimizing anchorage length and material toughness in deep underground engineering. Abstract The stability of rock masses in deep underground excavations, such
Wenhui Bian, Xiaohui He, Kexue Wang, Yufei Wu, Guoxin Wang, Shaochen Zhang, Jun Yang   +6 more
wiley   +1 more source

Concrete Damage Plasticity Model Application to Predict Stress–Strain Behavior of Impermeable Strata in Deep Rock Salt Deposits

Geotechnics
Maintaining the integrity of impermeable strata between mine workings and overlying aquifers is critical, because seepage pathways may cause mine flooding and surface subsidence.
Gregorii Iovlev, Andrey Katerov, Anna Andreeva, Alisa Ageeva   +3 more
doaj   +1 more source