Results 111 to 120 of about 119,350 (306)

Experimental study on dynamic behavior analysis of coal and its acoustic emission response characteristics under impact failure

Deep Underground Science and Engineering, EarlyView.
Based on acoustic emission response characteristics, it can be more accurate to identify the damage evolution process of coal under the combined dynamic and static loads, reveal the moment corresponding to coal damage, and identify the characteristics of coal failure. The research results are conducive to the further use of acoustic emission monitoring
Wei Zhang, Huijian Fu, Yingke Liu, Zhaoxi Long, Yang Liu, Tengrui Yang, Yanbo Sun, Mingjun Jiang, Xiaojiang Wen, Yue Niu, Ruixi Cheng   +10 more
wiley   +1 more source

Study on the influence of fracture geometry characteristics on the shear behaviors of fractured rock mass

International Journal of Coal Science & Technology
The shear behavior of fractured rock masses critically influences engineering stability, particularly in slope engineering. Overcoming limitations of conventional preparation methods, this study utilizes sand-powder 3D printing to fabricate rock-like ...
Chaolei Wu, Lishuai Jiang, Yang Li, Kefang Tao, Mingtao Gao, Xin Yang, Jiaming Liu   +6 more
doaj   +1 more source

Strain‐based modeling and analysis for rock blasting and geomechanics applications

Deep Underground Science and Engineering, EarlyView.
This paper introduces a novel strain‐based modeling approach for blasting and geomechanical applications, using measurable variables like particle velocity, strain, and displacement. By bypassing complex constitutive relations, strain‐based models capture critical blasting trends and full‐blast design parameters with minimal calibration.
Ruilin Yang
wiley   +1 more source

Study on Dust Hazard Levels and Dust Suppression Technologies in Cabins of Typical Mining Equipment in Large Open-Pit Coal Mines in China

Atmosphere
As the world’s largest open-pit coal producer, China faces severe dust pollution in mining operations. Cabins of mining equipment (electric shovels, haul trucks, drills) exhibit unique micro-environmental contamination due to dual-source pollution ...
Xiaoliang Jiao, Wei Zhou, Junpeng Zhu, Xinlu Zhao, Junlong Yan, Ruixin Wang, Yaning Li, Xiang Lu   +7 more
doaj   +1 more source

PHOTOGRAMMETRIC SURVEY OF OPEN PIT MINE

Contemporary Theory and Practice in Construction, 2017
<jats:p>There is a geodetic department in Ugljevik Coal Mine. In addition to all tasks(expropriation, geometry control of existing engineering objects, monitoring oflandslides, etc.), the primary task of the geodetic service is to calculate the volume of theexcavated masses on a surface mine during a certain period of ...
openaire   +2 more sources

Biota Perairan di Area Pertambangan Emas PT. Natarang Mining, Lampung Selatan [PDF]

, 2012
Dependence of the diversity of aquatic biota with water quality is typical of interaction and mutual influence. Various development activities in a watershed is now being polluted waters.
Priyono, A. (Agus)
core  

Investigation of the failure characteristics of fissure tunnels under dynamic and static combinations

Deep Underground Science and Engineering, EarlyView.
This article aims to investigate the dynamic fracture response of fractured tunnel models under zero geological stress through physical experiments and numerical simulations. It further simulates the dynamic fracture characteristics of fractured tunnel models under geological stress ranging from 0 to 2.5 MPa using the numerical software AUTODYN ...
Peng Ying, Yu Ying, Xiaohan Li, Han Zhao, Kewei Yu, Zheming Zhu, Lei Zhou, Xibin Li   +7 more
wiley   +1 more source

Mechanism of reverse deformation increase in the virgin coal rib compared to the pillar rib of the gob-side entry in an extra-thick coal seam

Scientific Reports
The advantage of applying gob-side entries (GSEs) with narrow coal pillars in extra-thick coal seams to improve the recovery rate is particularly significant.
Wenrui He, Dongdong Chen, Hengzhong Zhu
doaj   +1 more source

Optimization of cut‐hole layout under high in situ stress based on numerical simulation and field tests

Deep Underground Science and Engineering, EarlyView.
This study investigates the blast‐induced rock damage patterns under different cut‐hole layouts and ground stress conditions through numerical simulations and field tests. The findings in this study provide valuable insights for similar underground engineering applications.
Junjie Zhao, Diyuan Li, P. G. Ranjith, Xinxin Lü, Yanliang Li, Xiaoli Su   +5 more
wiley   +1 more source

Failure characteristics and the energy criterion of rock with a through‐going joint under true‐triaxial unloading conditions: Insights from the DEM model

Deep Underground Science and Engineering, EarlyView.
The rock failure mode is significantly influenced by the contributing factors, such as the joint inclination, the initial confining pressure, and the unloading point. We found six typical rock failure modes after a large number of numerical tests. Abstract Excavation unloading damages rock masses, with preferential failure along geological defects in ...
Fei Liu, Changhui Liang, Sijia Liu, Yongjun Zhang, Luo Wang   +4 more
wiley   +1 more source