Results 321 to 330 of about 318,456 (400)

Shear behavior of bolt–grout interfaces under constant normal stiffness: Influence of grout strength and thickness

Deep Underground Science and Engineering, EarlyView.
The effects of grout strength and thickness on the shear behavior of bolt–grout interfaces (BGI) under constant normal stiffness conditions are investigated. Shear strength, failure modes, and acoustic emission characteristics are examined. The findings reveal that grout strength exerts a significantly greater influence on BGI shear strength and ...
Sunhao Zhang, Dongqi Shang, Yujing Jiang, Jinge Zhang, Hongbin Chen, Tianqi Jiang   +5 more
wiley   +1 more source

Author Correction: Lunar primitive mantle olivine returned by Chang'e-6. [PDF]

Nat Commun
Sheng SZ, Wang SJ, Li QL, Wu S, Wang H, Hua JX, Chen Z, Hao JH, Zhang B, He Y, Zhu JM.   +10 more
europepmc   +1 more source

A review on rockburst prediction and prevention to shape an ontology‐based framework for better decision‐making for underground excavations

Deep Underground Science and Engineering, EarlyView.
A scientometric analysis of 2449 journal articles and a comprehensive review of 336 papers were conducted, discussing and identifying challenges and research gaps in rockburst prediction and prevention and proposing an ontology‐based framework for better decision‐making in underground excavations. Abstract With underground engineering projects becoming
Hongchuan Yan, Haijiang Li, Hongqiang Xie, Mingli Xiao, Jianliang Pei, Huaizhong Liu, Jiangda He   +6 more
wiley   +1 more source

A high-resolution in situ X-ray diffraction study of mineral transitions due to post-hydration heating in CM chondrite meteorites. [PDF]

Earth Planets Space
Jenkins LE, King AJ, Lee MR, Daly L, Thompson SP, Day SJ, Saunders L, Martin PE, Bintang F.   +8 more
europepmc   +1 more source

Investigation on hard‐rock breaking performance and auxiliary mechanism of picks assisted with both‐sided high‐pressure water jets

Deep Underground Science and Engineering, EarlyView.
This paper investigates the high‐pressure water jet‐pick combined rock‐breaking mode (HPC), which employs high‐pressure water jets to precut grooves on both sides of the picks. The rock‐breaking patterns and performance of the HPC method are obtained, and the auxiliary rock‐breaking mechanism of water jet grooving is revealed.
Jingjing Lu, Jiancheng Xiao, Hui Zhou, Xiao Ma, Congcong Hou, Jian Cui, Fujian Yang   +6 more
wiley   +1 more source

Spherified Pd_0.33Ni_0.67/BCNT Catalyst for Nitrobenzene Hydrogenation. [PDF]

Int J Mol Sci
Nagy C, Sikora E, Prekob Á, Gráczer K, Muránszky G, Vanyorek L, Kristály F, Fejes Z.   +7 more
europepmc   +1 more source

Generalized Matsuoka–Nakai criterion considering hydrostatic pressure dependence in the brittle–ductile region

Deep Underground Science and Engineering, EarlyView.
Three sets of strength data were selected, including hydrostatic pressure independent within the brittle region (HPI‐B), hydrostatic pressure dependent within the brittle region (HPD‐B), and hydrostatic pressure dependent within the brittle–ductile region (HPD‐BD). For HPI type, the failure envelope within the deviatoric plane remains constant.
Jiacun Liu, Junjie Xiao, Dongping Liu, Ying Xu   +3 more
wiley   +1 more source

The characterization of clay minerals in the Kashafrud Formation in a gas field in northeast Iran. [PDF]

Sci Rep
Ardebili PN, Jozanikohan G, Moradzadeh A.   +2 more
europepmc   +1 more source

Experimental study on burning rate and flame geometry in construction tunnel fires under high geothermal conditions

Deep Underground Science and Engineering, EarlyView.
Abstract As tunnel construction advances in lengths and depths, the construction of tunnels in high geothermal environments has become increasingly common, raising significant fire risks. In this study, a 1:20 scale model tunnel test platform was constructed to investigate the effects of a high geothermal environment on fire behavior in tunnels during ...
Xiaoxian Fei, Maozhen Liu, Jiayi Ha, Linbo Du, Zhi Li, Yuhao Li, Chuangang Fan   +6 more
wiley   +1 more source

Phase transitions, Dirac and Weyl semimetal states in Mn_1-xGe_xBi₂Te₄. [PDF]

Sci Rep
Shikin AM, Zaitsev NL, Estyunina TP, Estyunin DA, Rybkin AG, Glazkova DA, Klimovskikh II, Eryzhenkov AV, Kokh KA, Golyashov VA, Tereshchenko OE, Ideta S, Miyai Y, Kumar Y, Iwata T, Kosa T, Kuroda K, Shimada K, Tarasov AV.   +18 more
europepmc   +1 more source