Results 61 to 70 of about 1,050 (161)
Meikuang AnquanTo prevent water inrush accidents in the coal mining face caused by the development of the water-conducting fracture zone in the overlying strata to the aquifer, this study conducts an in-depth study on the height of the water-conducting fracture zone ...
Lingtao KONG +5 more
doaj +1 more source
تحلیل پایداری و ارزیابی ریزش سنگین مجدد در دیواره معدن روباز انگوران [PDF]
Analytical and Numerical Methods in Mining Engineering, 2017 پایداری شیب یکی از پارامترهای اصلی و تعیین کننده در اقتصاد و ایمنی در معادن روباز است. شکست و به تبع آن گسیختگی شیب سبب زیان‌های جبران‌ناپذیر اقتصادی و جانی می‌شود. عوامل زیادی در ناپایداری شیب در معادن اثرگذارند.
ابراهیم یعقوبی +2 more
doaj
A 3D Virtual Space for the E-Commerce Strategy Model
, 2018 In recent years, innovative applications of electronic commerce (e-commerce) are facing the challenges of mobile commerce (m-commerce) and ubiquitous commerce (u-commerce).
Changrui Yu, Gong Cheng, Kecheng Liu
core +1 more source
Geofluids, Volume 2026, Issue 1, 2026.To address severe mining hazards such as intense ground pressure, roof fragmentation, and support instability encountered when longwall faces pass beneath residual coal pillars in close‐proximity coal seams, this study investigates the mining conditions of an inclined residual coal pillar in a shallow‐buried, close‐spaced coal seam at the Daliuta Coal ...
Peng Sun +8 more
wiley +1 more source
A Study on Shear Behavior of Rock Joint under the Constant Normal Load Conditions by using 3DEC [PDF]
, 2014 암반 구조물의 안정성에 결정적인 영향을 미치는 절리의 특성을 파악하기 위해서는 일반적으로 직접전단시험을 통한 연구가 수행되고 있으나, 본 연구에서는 3차원 개별요소법에 근거한 3DEC을 사용하여 직접전단시험을 수치해석적으로 수행하였다. 톱니각과 강도가 상이한 인공 절리시험편에 대해 수직하중을 4단계로 변화시켜가며 일정수직하중 조건에서 실험실 직접전단시험으로 최대전단강도를 측정하였다.
노영목
core
Geofluids, Volume 2026, Issue 1, 2026.In the process of underground metal mining, the use of traditional upward fan‐shaped holes is limited by rock drilling quality, low blasthole utilisation rate and inefficient mining. According to the conditions at the Gongchangling iron ore deposit, a large‐span parallel‐hole ore‐dropping technology was adopted.
Haohao Luo +5 more
wiley +1 more source
Geofluids, Volume 2026, Issue 1, 2026.To theoretically explain and quantify the effect of advancing speed (ADS) on ground pressure (GP) behavior, the 13,218 working face of the Xiaojihan Coal Mine (XCM) was taken as the engineering case. Field measurements and theoretical analysis were combined to examine how changes in ADS influence the roof structure and the support resistance ...
Hui Gao +7 more
wiley +1 more source
Correlating Glycoforms of DC‐SIGN with Stability Using a Combination of Enzymatic Digestion and Ion Mobility Mass Spectrometry [PDF]
, 2020 The immune scavenger protein DC‐SIGN interacts with glycosylated proteins and has a putative role in facilitating viral infection. How these recognition events take place with different viruses is not clear and the effects of glycosylation on the folding
Yen, Hy +11 more
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The Influence of Roughness on the UCS of Discontinuous Jointed Rocks
Shock and Vibration, Volume 2026, Issue 1, 2026.Joint roughness and size effect are key factors controlling the uniaxial compressive strength (UCS) of discontinuous jointed rock masses. However, there is currently a lack of a unified quantitative model that can simultaneously characterize the roughness enhancement effect and the size weakening effect. Based on a two‐dimensional numerical simulation,
Wenxu Liang +4 more
wiley +1 more source
Lämpöjännityksen vaikutus kalliolujitukseen ydinjätteen loppusijoituslaitoksessa
, 2021 The stability of the deep underground spaces in a nuclear waste repository environment is compromised most severely by two factors; the high in-situ stress and thermally induced stresses that take place after the application of bolts and shotcrete. A new
van der Weij, Oskar
core +1 more source