Results 51 to 60 of about 3,569 (218)

Seismic analysis and design of tunnels within fault ground: A review

Deep Underground Science and Engineering, EarlyView.
The research methods of seismic response of tunnels within fault ground, including field investigations, analytical solutions, physical experiments, and numerical simulations, and seismic countermeasures are discussed. The present study examines the shortcomings and limitations of the current research and design, and puts forward proposals for future ...
Xingda Wang, Yujing Jiang, Xuepeng Zhang, Yuyong Jiao, Ningbo Li, Xiao Wang, Bo Li   +6 more
wiley   +1 more source

Upper bound limit analysis of coral reef limestone cavern roof stability incorporating a tension‐shear failure mechanism with tensile‐strength cut‐off

Deep Underground Science and Engineering, EarlyView.
For the roof of coral reef limestone caverns, a novel tension‐shear composite failure mechanism was developed. The most critical tensile crack model was identified using a hybrid optimization algorithm, and the stability of the cavern roof was analyzed accordingly.
Dongsheng Xu, Chenxu Li, Chuantan Hou
wiley   +1 more source

The influence of base inclination on slope deformation of inner dump under rainfall infiltration

Meikuang Anquan
In order to study the influence of basement inclination on the stability of the dump slope under rainfall conditions, according to the actual situation of Antaibao Open-pit Coal Mine, FLAC3D software was used to simulate the slope of the dump under the ...
Zhenwei WANG, Yuanhao LI, Yonghao WEI, Kewei HUANG, Haitao JIANG, Yao CHENG   +5 more
doaj   +1 more source

A study of the pro-water pressure for initiation of a large landslide triggered by a strong earthquake based on fluid-structure coupling

Shuiwen dizhi gongcheng dizhi, 2022
The Daguangbao landslide is the largest co-seismic landslide with a volume of approximately 12×108 m3, which triggered by the Wenchuan earthquake (Ms 8.0) occurred on May 12, 2008.
Xingxing SHI, Shenghua CUI, Xiangjun PEI, Ling ZHU, Qingwen YANG   +4 more
doaj   +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

Research on Dynamic Response and Deformation Characteristics of Pre-Disintegrated Carbonaceous Mudstone Embankment

Zhongwai Gonglu
To study the dynamic response and deformation characteristics of the carbonaceous mudstone embankment under traffic load, dynamic triaxial tests were conducted to investigate the variation laws of the dynamic backbone curve and dynamic elastic modulus of
ZHANG Ke, LIU Xinxi, FAN Zijian, LI Shengnan, ZHAO Fufa   +4 more
doaj   +1 more source

بهینه‌سازی ابعاد میانبر تهویه به روش دویل میانی در تونل راه آهن گدوک [PDF]

نشریه مهندسی معدن, 2017
تونل گدوک به طول 2887 متر در مسیر راه‌آهن فیروز کوه به قائم شهر قرار دارد. جنس تونل سنگی، ارتفاع آن 6/5 متر، عرضش 2/5 متر و سطح مقطع آن 25 متر مربع است. حداکثر ارتفاع روباره تونل 35 متر است. شدت جریان لازم برای تهویه تونل 400 متر مکعب در ثانیه محاسبه شده
سیده گلاله حسینی, حسن مدنی, کورش شهریار, علی مرتضوی   +3 more
doaj  

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

Analysis of inclined failure characteristics of floor along working face in Ordovician limestone confined water stope

Meitan kexue jishu, 2022
Accurate prediction of the maximum failure depth of the stope floor on confined water is an important part of preventing water inrush from the coal mine floor.
Xingming WANG, Yingfeng LIU, Shenghui NAN, Kang GUO, Rong SHANG   +4 more
doaj   +1 more source

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