Results 41 to 50 of about 1,143 (178)

Research on construction of intelligent fully mechanized mining face in Wangjiata Coal Mine

Gong-kuang zidonghua, 2020
Taking the 2S103 intelligent fully mechanized mining face of Wangjiata Coal Mine as an example, the specific implementation plan and application effect of intelligent fully mechanized mining face are analyzed, and the existing technical problems are summarized.
XING Xudong, ZHANG Yongjie, DIAO Zongxian, LU Jiabin, ZHENG Xiangqi, WANG Bo   +5 more
openaire   +1 more source

Exponentially‐constrained Gaussian mixture model for quantifying vertical development of water‐conducting fracture zones in lithologically stratified mining roofs

Deep Underground Science and Engineering, EarlyView.
This study proposes an exponentially‐constrained Gaussian mixture model (EcGMM) to quantify vertical fracture heterogeneity in stratified roof strata. The model integrates a piecewise exponential decay term capturing global stress dissipation with Gaussian components representing localized fracture intensification at lithological interfaces.
Huiqing Yuan, Zhimin Xu, Weixiao Chen, Chenghang Zhang, Shijie Xiong, Yajun Sun   +5 more
wiley   +1 more source

National Policy Coherence Counts for Reducing Inequality in Global Climate and Development Agendas

Sustainable Development, EarlyView.
ABSTRACT International institutions promote policy coherence as crucial to the effective and fair implementation of global sustainability agendas, though the evidence for its benefits is slim. We present here the first systematic cross‐country dataset on the consequences of national government efforts to promote policy coherence for vulnerable groups ...
Katherine Browne, Adis Dzebo, Zoha Shawoo, Mario Cardenas, Pierrick Chalaye, Alexia Faus Onbargi, Cassilde Muhoza, Patricia Nicdao, Nokwethaba Makhanya, Navam Niles, Priyatma Singh   +10 more
wiley   +1 more source

Idea of whole design of unmanned fully-mechanized coal mining face and its implementation method

Gong-kuang zidonghua, 2013
Unmanned or lee-manned fully-mechanized coal mining face is a core topic about coal mine safety. A view was pointed out that automatic coal mining should be pondered on from the whole fully-mechanized system, and fully-mechanized equipments should be ...
FU Guo-jun, YANG Ming-liang, XU Tai-shan
doaj  

Design of embedded collaborative simulation platform for complex equipment on fully-mechanized coal mining face

Gong-kuang zidonghua, 2017
In view of problem that traditional single-domain simulation platform cannot meet requirement of large-scale collaborative simulation of complex equipment on fully-mechanized coal mining face, an embedded collaborative simulation platform for complex ...
CUI Jing, LUAN Baowei, REN Laihong, LU Zhenguo, YANG Yanchao   +4 more
doaj   +1 more source

Forces Behind South Australia's Unusual Structural Changes Since 1840

Australian Journal of Agricultural and Resource Economics, EarlyView.
ABSTRACT The agricultural sector's share of GDP in growing economies typically declines but, for a century from the early 1850s, Australia's did not. That trend is most evident for the former colony and now State of South Australia (SA). Moreover, that share for SA has been almost flat since 1980 as well, along with the agricultural sector's share of ...
Kym Anderson
wiley   +1 more source

Study on integrated treatment technology of hydrogen sulfide extraction and purification in fully-mechanized mining face

Meitan kexue jishu, 2023
During the driving of the fully mechanized driving face of the hydrogen sulfide coal roadway, due to the ventilation effect of the roadway, it is very easy to cause hydrogen sulfide gas accumulation and overrun in the front area of the driving face.
WANG Fuzhong, LIU Kui, GONG Xiaobing, ZHAO Kai, ZHANG Yao, LI Dingfu   +5 more
doaj   +1 more source

Making Mining Licit: Gold, Commodification, and the Everyday Performance of Law in Colombia

American Anthropologist, EarlyView.
ABSTRACT Ethnographies of resource‐making have shown that the extraction of resource value from objects is premised on obviating the emplaced lifeworlds that surrounded objects before they traveled to consumer markets. Much of this literature looks at such supply‐chain disentanglement from the viewpoint of corporate and formal regulatory practices ...
Jesse Jonkman
wiley   +1 more source

‘Elbow grease and yellow soap’: Housework time in working‐class households in late‐nineteenth and early twentieth‐century Britain

The Economic History Review, EarlyView.
Abstract Housework is central to feminist calls for recognition of women's work, economic histories explaining the sexual division of labour, and claims regarding the progressive role of scientific knowledge. Yet little is known about the time it actually took. We address this lacuna.
Sara Horrell, Jane Humphries
wiley   +1 more source

Research of gas movement law in goaf with parallel double U-shape ventilation mode

Gong-kuang zidonghua, 2014
In order to analyze and master gas distribution and movement law in goaf with parallel double U-shape ventilation mode, a CFD model was established according to characteristics of parallel double U-shape ventilation system of fully mechanized coal mining
HAO Yabing, WANG Fei, WANG Xing, LIU Xiang   +3 more
doaj   +1 more source