Results 131 to 140 of about 119,350 (306)

Evaluation of impact of surface dynamic subsidence on construction of pumped storage hydropower plants in abandoned open-pit mines

Meitan kexue jishu
Surface dynamic subsidence is one of the key scientific issues that need to be solved urgently when constructing pumped storage hydropower plant in abandoned mines.
Yang LI, Xinghai LEI, Nan WANG, Yuqi REN, Xiangyang JIN, Ke WANG, Kuichao JIANG, Peng GE, Xue XIA, Tiezheng LI, Xiaoming SHI, Yuliang WANG   +11 more
doaj   +1 more source

Mine Development In Pirquitas, Jujuy Province [PDF]

, 2013
Mina Pirquitas está situada en la provincia de Jujuy, a una altura promedio de 4300 msnm. Se ubica en el noroeste de la provincia morfoestructural de Puna y en el sur de la Faja Estannífera Boliviana.
Avila, Julio Cesar, Rosas, Lidia Verónica   +1 more
core   +1 more source

Instability mechanism and failure characteristics of underground cavern in block system under the action of seismic waves

Deep Underground Science and Engineering, EarlyView.
Seismic waves with tensile stress, high amplitude, and low frequency are most likely to trigger block instability and sliding. Blocks with a single sliding surface are more prone to movement than those with multiple constraints, and roof‐positioned blocks are especially vulnerable to slide.
Xiao Wang, Jinxiao Liu, Gaoshuo Zhang, Wenxin Li, Changdi He   +4 more
wiley   +1 more source

Global research status and intelligent technology development trend of open-pit mining blasting: visualization analysis based on CiteSpace and VOSviewer

Geomechanics and Geophysics for Geo-Energy and Geo-Resources
Blasting is an important process in open-pit mining, and blasting technology directly affects the efficiency, cost and ecology of mine production. Research on blasting in open-pit mining has been progressing, but there is a lack of systematic discussion ...
Jie Tan, Weiming Guan, Anye Cao, Changxin Wang, ZiZhao Zhang, Yun Duan, Hui Chen   +6 more
doaj   +1 more source

Numerical simulation study on the evolution of the temperature field and frozen wall in fractured rock mass

Deep Underground Science and Engineering, EarlyView.
The evolution of the temperature field and frozen wall under different fracture conditions was examined by an artificial ground freezing‐based thermal‐hydraulic coupled model. It was observed that fracture inclination affects the interaction extent of freezing pipes and fracture, while phase transition extent is the dominant factor for heat transfer in
Chenyi Zhang, Tingting Luo, Tao Zhang, Tao Han, Xiaodong Zhao, Haipeng Li, Yanfei Ma, Faxing Zhang, Madhusudhan Bangalore Narasimha Murthy, Weihao Yang   +9 more
wiley   +1 more source

Ecological protection and restoration technology of large-scale open-pit coal mining area in the northern sand-proof belt

Meitan kexue jishu
The northern sand-proof belt is the key zone for preventing and controlling desertification and sandification in China, and it is the core area of the “Three Norths” project, which is characterized by infertile soil, high wind speed, drought and water ...
Quansheng LI, Lin LI, Jie FANG, Wei ZHOU, Shaogang LEI, Yuying BAO, Ming CUI   +6 more
doaj   +1 more source

Fracture evolution of a thick soft protection layer and the water inrush mechanism in overburden under longwall mining

Deep Underground Science and Engineering, EarlyView.
Through shear–tensile creep tests and viscoelastic modeling, the fracture evolution of thick soft protective layers is clarified. Results show thickness‐dependent rheological failure modes that govern four types of roof water inrush, providing a mechanism‐based framework for hazard prediction and control. Abstract In the Jurassic coal‐bearing strata of
Mengnan Liu, Wei Qiao, Xianggang Cheng, Xiangsheng Meng, Peichao Feng   +4 more
wiley   +1 more source

Macroscopic failure characteristics and seepage pattern of damaged goaf-side coal pillars under confined water accumulation

Meitian dizhi yu kantan
BackgroundThe method of supporting roadways using small coal pillars has been widely applied in China. As a result, the stability of goaf-side coal pillars affects mining safety.
Weitao LIU, Dongqi CHEN, Yuben LIU, Yanhui DU, Jiyuan ZHAO   +4 more
doaj   +1 more source

Mechanistic insights across curing regimes for enzymatic and biopolymer‐optimized reinforcement in rock masses

Deep Underground Science and Engineering, EarlyView.
This study examines the effects of curing temperature on the mechanical behavior of underground rock masses treated with enzyme‐induced calcite precipitation (EICP) and an innovative biopolymer‐modified EICP (BP‐EICP). Abstract Biocementation is an innovative and sustainable technique for reinforcing weak and weathered rock masses in natural and ...
Mary C. Ngoma, Oladoyin Kolawole
wiley   +1 more source

Research progress and current status of dynamic wave propagation characteristics in rock mass: A review

Deep Underground Science and Engineering, EarlyView.
This review elucidates the velocity–dispersion–attenuation coupling mechanisms of wave propagation in rock masses, compares six representative models, and reveals how pressure, temperature, mineral composition, and anisotropy jointly control dynamic responses in complex geological media.
Jiajun Shu, Tao Li, Ruiqi Yuan, Yue Li, Bingni Wu, Bo Liu, Zhengding Deng, Galindo Rubén, Fausto Molina‐Gómez   +8 more
wiley   +1 more source