Results 91 to 100 of about 14,170 (290)

Research on Deformation Prediction of Small Interval Tunnel Based on Machine Learning and Numerical Simulation

Energy Science &Engineering, EarlyView.
This study leverages machine learning algorithms—specifically artificial neural networks (ANN) and genetic programming (GP)—to forecast and analyze variations in vault settlement measurements during excavation of small interval tunnel. A settlement prediction model was developed and validated through comparative analysis with regression to evaluate the
Wenjie Zhai, Jia Xue, Yongjie Fu, Beichen Yu, Yan Zhu, Man Yuan, Mingbo Chi, Zhentao Li   +7 more
wiley   +1 more source

Study on the evolution of rock damage and blasting characteristics of deep tunnel splitting and drilling with explosives

工程科学学报
As mineral resource extraction progresses into deeper regions, the in-situ geological stresses within rock layers increase significantly. Consequently, high geological stress becomes a critical factor to consider during blasting operations in deep rock ...
Shigui FU, Zegong LIU, jinwei QIU, Shuai YANG, Gangjian AN, Guodong QIAO, Xin ZHANG   +6 more
doaj   +1 more source

Mine hard rock excavation with no blasting

Revista del Instituto de Investigación de la Facultad de Ingeniería Geológica, Minera, Metalúrgica y Geográfica, 2009
Drilling and blasting is generally used for fragmenting hard in situ rock in mine excavation. This method however, in addition of being expensive, it causes environmental pollution by noice, dust, vibrations and gases. It may also generate social conflicts with native communities around the mining operation as it disturbs and alters the inhabitants ...
Ortiz Sánchez, Oswaldo, Giraldo Paredes, Emiliano, Canchari Silverio, Gudelia   +2 more
openaire   +1 more source

Excavation control, management of blast damage, and quality control [PDF]

Proceedings of the 2013 International Symposium on Slope Stability in Open Pit Mining and Civil Engineering, 2013
Implementation of slope design transfers well-intentioned concepts, technical expertise, and cost commitments to a reality that cannot be fully or reliably predicted. With the uncovering of real geological and operational conditions come observations, actions, and experiences which may mandate changes to design for a multitude of reasons.
openaire   +1 more source

Stress Redistribution Mechanisms and Subsidence Control of Fluidized Gangue Backfilling in Underground Coal Mining: Integrated Experimental and Numerical Investigation

Energy Science &Engineering, EarlyView.
Fluidized gangue backfilling controls mining subsidence through stress redistribution in composite backfill‐pillar systems, reducing surface settlement and stress concentrations. Multi‐scale experimental and numerical analysis provides quantitative design parameters for optimizing ground control in sustainable underground coal mining operations ...
Weilong Zhang, Jie Zhang, Yuanzhen Zhang, Wenjing Liu, Liang Li, Deyi Nan, Guannan Zhao, Chen Yang, Haiqing Bian, Hua Shao, Xiao Zuo, Changtai Zhou   +11 more
wiley   +1 more source

Study on timing sequence control fracture blasting excavation of deep rock masses with filled joints. [PDF]

Sci Rep, 2021
Huang J, Zhang G, Luo Y, Li X, Song K, Liu T.   +5 more
europepmc   +1 more source

Study on the Influence of Slope Static Load on Shallow Lining Support Structure

Energy Science &Engineering, EarlyView.
On the basis of the background of the shallow‐buried main adit supported by stone lining, the mechanical model of the supporting structure is constructed, and the stability of the supporting structure is analyzed by using the methods of field investigation, theoretical analysis, and numerical simulation.
Hongwei Wang, Chaofeng Yuan, Jianqiang Jiao, Jinyuan Bai   +3 more
wiley   +1 more source

Blasting vibration response characteristics of tunnel support structures in horizontally layered rock masses under initial in-situ stress

河南理工大学学报. 自然科学版
ObjectivesTo analyze the stability of surrounding rock during tunnel blasting excavation in horizontally layered rock masses under initial in-situ stress.MethodsUsing LS-DYNA finite element software， numerical models were established under three ...
Yu Jianxin, Liu Wenjin, Zhang Xin, Zhang Hao   +3 more
doaj   +1 more source

The Many Faces of Talent Management: Organizational Perspectives on Talent and Talent Management Practices in Jordan

Human Resource Development Quarterly, EarlyView.
ABSTRACT Talent management involves the systematic planning, acquisition, development, performance management, engagement, and retention of employees identified as “talent.” Little is known about the relationship between organizations' talent perspectives and talent management practices.
Amro Aljbour, Erica French, Muhammad Ali
wiley   +1 more source

Influence of Small, Clear Distance Cross-Tunnel Blasting Excavation on Existing Tunnel below

Advances in Civil Engineering, 2019
The vibration effect generated during tunnel excavation can influence or damage adjacent tunnels. Studying and controlling the blasting vibration effect has important theoretical and practical significance, especially for new tunnels.
Baofu Duan, Weizeng Gong, Guoshan Ta, Xuxu Yang, Xuewei Zhang   +4 more
doaj   +1 more source