Results 61 to 70 of about 5,737 (227)

Mechanism of deep deformation of roof arch of underground powerhouse at right bank of Baihetan Hydropower Station

Yantu gongcheng xuebao, 2020
In the process of the excavation of underground powerhouse caverns at the right bank of Baihetan Hydropower Station, which is the world largest underground powerhouse in term of span, the surrounding rock at the roof arch from section 0 + 076 m to 0+133 ...
MENG Guo-tao 1, 2, HE Shi-hai 1, CHEN Jian-lin 1, WU Jia-yao 1, 2, CHEN Ping-zhi 1, 2, DUAN Xin-ping 3
doaj   +1 more source

Research on Stability of Slope of landfill Site Based on FLAC3D [PDF]

Proceedings of the International Conference on Advances in Energy, Environment and Chemical Engineering, 2015
The research is aiming to solve the slope stability problem for the landfill project of Ordos coal deep processing project conducted by Zhong Tian Energy Co., Ltd. It analyzes the stability and reinforcement measures for the slope of landfill via theoretical analysis and numerical simulation.
Wei Zhang, Yanliang Zhai, Shouqiang Liu, Yifan Zeng   +3 more
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

Evaluation of slope stability in open pit based on 3D geological modeling and DFN

Shuiwen dizhi gongcheng dizhi
This study addressed the limitations of conventional numerical simulation techniques for discrete rock masses and joints by introducing a novel method for assessing slope stability in open-pit mines.
Yongji CHEN, Tingke YAN, Cong LIU
doaj   +1 more source

Study on Deformation Law of Crossing Layer Drilling Superimposed Floor Roadway

Energy Science &Engineering, EarlyView.
Based on deformation law of crossing layer drilling superimposed floor roadway, low dip angle drilling is particularly susceptible to complications such as borehole blockage and collapse. ABSTRACT Floor extraction roadway crossing layer drilling is a pivotal strategy for gas control in areas prone to coal and gas outbursts.
Xiao Liu, Bo Li, Jiawei Xie, Xiaoming Ni, Shaoren Wei, Chengtao Yang, Yubo Zhang, Haixiao Lin, Wei Zhao, Tao Wang   +9 more
wiley   +1 more source

Análisis de la respuesta elástica no lineal de las capas de base conformadas con materiales granulares en las secciones de la Instrucción 6.1 y 6.2 IC [PDF]

, 2002
[Resumen:] En el presente trabajo, se van a comprobar las secciones de la Instrucción de Carreteras (6.1 y 2 IC) que incorporen en su estructura capas de materiales granulares.
Medina-Rodríguez, Luis, Pérez Pérez, Ignacio   +1 more
core   +1 more source

A continuum model for coupled stress and fluid flow in discrete fracture networks [PDF]

, 2016
Acknowledgments This work is a partial result of support from the US Department of Energy under project DOE-DE-343 EE0002761. This support is gratefully acknowledged. We also acknowledge the data from the University of Oklahoma and University of Texas at
Elsworth, Derek, Gan, Quan
core   +1 more source

Research on Optimal Width of Coal Pillars in Both Sides of Abandoned Mining Areas and Tunnel Control Technology

Energy Science &Engineering, EarlyView.
This study primarily investigates the optimal width for coal pillar retention in both sides of the worked‐out face section. Taking the 42201 haulage roadway of the 42201 working face at Shengxin Coal Mine as the primary research target, it analyses the optimum width for coal pillar retention through theoretical calculations, numerical simulations, and ...
Shuaifeng Yin, Kanglei Han, En Wang, Yitao Yan, Xubo Zhao   +4 more
wiley   +1 more source

Дослідження нестаціонарної динаміки газовиділення навколо гірничої виробки [PDF]

, 2018
Метою даного дослідження було вивчення впливу швидкості посування гірничого вибою на розподіл тиску метану. Це має велике значення з міркувань безпеки.
Захарова, Л. М., Назимко, В. В., Чеснокова, О. В.   +2 more
core  

Analysis and Optimization of Early‐Warning Indicators for Impact Critical Stress in Deep Soft Coal Seams

Energy Science &Engineering, EarlyView.
This study determines the impact critical stress early‐warning indicators for deep soft coal seams: 18 MPa (shallow holes), 20 MPa (deep holes), and 3 MPa/d daily stress change rate, via theoretical, experimental and simulation methods. ABSTRACT The accurate determination of early‐warning indicators for critical impact stress in deep soft coal seams is
Haichen Yin, Xiufeng Zhang, Atao Li, Yanliang Wang, Long Yuan, Chaohong Shi, Yang Chen, Caiping Lu, Liangjin Jiang   +8 more
wiley   +1 more source