发布求助
文献互助 智能选刊 最新文献

Journal of China University of Mining and Technology最新文献

筛选
英文 中文
Location of high seismic activity zones and seismic hazard assessment in Zabrze Bielszowice coal mine using passive tomography Zabrze Bielszowice煤矿地震高活动区定位及地震危险性评价
Journal of China University of Mining and Technology Pub Date : 2008-06-01 Epub Date: 2008-07-22 DOI: 10.1016/S1006-1266(08)60038-3
A LURKA
{"title":"Location of high seismic activity zones and seismic hazard assessment in Zabrze Bielszowice coal mine using passive tomography","authors":"A LURKA","doi":"10.1016/S1006-1266(08)60038-3","DOIUrl":"10.1016/S1006-1266(08)60038-3","url":null,"abstract":"<div><p>In the paper results of passive tomography calculations have been presented to assess rockburst hazard and locate high seismic activity zones in the vicinity of longwall 306 in Zabrze Bielszowice coal mine. The area of study was 1000 m in <em>X</em> direction by 900 m in <em>Y</em> direction. The zones of high values of P-wave propagation velocity have been found to correlate with the distribution of large seismic tremors.</p></div>","PeriodicalId":15315,"journal":{"name":"Journal of China University of Mining and Technology","volume":"18 2","pages":"Pages 177-181"},"PeriodicalIF":0.0,"publicationDate":"2008-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/S1006-1266(08)60038-3","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78810370","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 44
Numerical analysis of water inrush from working-face floor during mining 采动工作面底板突水数值分析
Journal of China University of Mining and Technology Pub Date : 2008-06-01 Epub Date: 2008-07-22 DOI: 10.1016/S1006-1266(08)60034-6
Qing-hua ZHU, Mei-mei FENG, Xian-biao MAO
{"title":"Numerical analysis of water inrush from working-face floor during mining","authors":"Qing-hua ZHU,&nbsp;Mei-mei FENG,&nbsp;Xian-biao MAO","doi":"10.1016/S1006-1266(08)60034-6","DOIUrl":"10.1016/S1006-1266(08)60034-6","url":null,"abstract":"<div><p>Confined water in the Ordovician limestone is one of the hidden troubles that threaten safe production of mines in north China. A numerical model of the key strata was developed. It included the structural characteristics and mechanical properties of the floor rock at the working face of a particular coal mine. The model was used to predict failure modes and to help establish rules for safe mining above the aquifer. The distribution of deformation, failure and seepage was simulated by using Dilian Mechsoft's Realistic Failure Process Analysis (RFPA2D) program. The stress distribution, the deformation and the flow vectors were also obtained. The results indicate that: 1) The original balance of the stress and seepage fields is disturbed due to coal mining; and 2) As the working face advances different deformation, or failure, appears in the surrounding rocks, the water-resisting strata in floor may be destroyed and the passage of water from the aquifer into the mine may occur. The combined action of mining stress and water pressure ultimately lead to water inrush from the floor.</p></div>","PeriodicalId":15315,"journal":{"name":"Journal of China University of Mining and Technology","volume":"18 2","pages":"Pages 159-163"},"PeriodicalIF":0.0,"publicationDate":"2008-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/S1006-1266(08)60034-6","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88588510","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 26
Synthesis and properties of physically crosslinked poly (vinyl alcohol) hydrogels 物理交联聚乙烯醇水凝胶的合成及性能研究
Journal of China University of Mining and Technology Pub Date : 2008-06-01 Epub Date: 2008-07-22 DOI: 10.1016/S1006-1266(08)60057-7
Ru-yin MA, Dang-sheng XIONG
{"title":"Synthesis and properties of physically crosslinked poly (vinyl alcohol) hydrogels","authors":"Ru-yin MA,&nbsp;Dang-sheng XIONG","doi":"10.1016/S1006-1266(08)60057-7","DOIUrl":"10.1016/S1006-1266(08)60057-7","url":null,"abstract":"<div><p>The present study is an investigation of the properties of poly (vinyl alcohol), which would be a better contact lens material than conventional HEMA in some ways. A transparent PVA hydrogel was prepared from a PVA solution in a mixed solvent consisting of water and a water-miscible organic solvent, DMSO, by the freezing-thawing method. The water content, visible light transmittance, mechanical and swelling properties of the hydrogels were evaluated as a function of PVA concentration and number of freeze-thaw cycles. The results show that the properties of PVA hydrogels depend on the polymer concentration, the number of freeze-thaw cycles and the addition of the organic solvent.</p></div>","PeriodicalId":15315,"journal":{"name":"Journal of China University of Mining and Technology","volume":"18 2","pages":"Pages 271-274"},"PeriodicalIF":0.0,"publicationDate":"2008-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/S1006-1266(08)60057-7","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89216228","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 29
Focal mechanism caused by fracture or burst of a coal pillar 煤柱破裂或爆裂引起的震源机制
Journal of China University of Mining and Technology Pub Date : 2008-06-01 DOI: 10.1016/S1006-1266(08)60033-4
Anye Cao, Lin-ming Dou, Guo-xiang Chen, S. Gong, Yu-gang Wang, Zhi-H. Li
{"title":"Focal mechanism caused by fracture or burst of a coal pillar","authors":"Anye Cao, Lin-ming Dou, Guo-xiang Chen, S. Gong, Yu-gang Wang, Zhi-H. Li","doi":"10.1016/S1006-1266(08)60033-4","DOIUrl":"https://doi.org/10.1016/S1006-1266(08)60033-4","url":null,"abstract":"","PeriodicalId":15315,"journal":{"name":"Journal of China University of Mining and Technology","volume":"53 1","pages":"153-158"},"PeriodicalIF":0.0,"publicationDate":"2008-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87615766","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 12
Argillization mechanics of rock from the Xing'anling Group in the Beier depression of the Hailar basin 海拉尔盆地贝尔凹陷兴安岭群岩石泥化机理
Journal of China University of Mining and Technology Pub Date : 2008-06-01 Epub Date: 2008-07-22 DOI: 10.1016/S1006-1266(08)60050-4
Qin-fu LIU , Zheng FU , Bao-quan YANG
{"title":"Argillization mechanics of rock from the Xing'anling Group in the Beier depression of the Hailar basin","authors":"Qin-fu LIU ,&nbsp;Zheng FU ,&nbsp;Bao-quan YANG","doi":"10.1016/S1006-1266(08)60050-4","DOIUrl":"10.1016/S1006-1266(08)60050-4","url":null,"abstract":"<div><p>The reservoir of the Xing'anling Group in the Beier depression of the Hailar basin is loosely cemented with many tuffaceous grains. This causes argillization and collapse of the grain framework of the reservoir sandstones. A detailed study on the characteristics of rocks and minerals was carried out through polarized microscope, X-ray diffraction, X-ray fluorescence, SEM and energy spectrum analysis. The results indicate that the reason for argillization is the abundant pyroclastic, and especially tuffaceous, grains in the reservoir. The alkaline component is relatively high in some strata. These are easily altered to montmorillonite in diagenesis. Na<sup>+</sup> montmorillonite swells strongly when exposed to water. This is the fundamental reason for the reservoir's argillization and plugging.</p></div>","PeriodicalId":15315,"journal":{"name":"Journal of China University of Mining and Technology","volume":"18 2","pages":"Pages 237-240"},"PeriodicalIF":0.0,"publicationDate":"2008-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/S1006-1266(08)60050-4","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80543718","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Ash melting behavior by Fourier transform infrared spectroscopy 用傅里叶变换红外光谱分析灰渣熔化行为
Journal of China University of Mining and Technology Pub Date : 2008-06-01 DOI: 10.1016/S1006-1266(08)60052-8
Han-xu Li, X. Qiu, Y. Tang
{"title":"Ash melting behavior by Fourier transform infrared spectroscopy","authors":"Han-xu Li, X. Qiu, Y. Tang","doi":"10.1016/S1006-1266(08)60052-8","DOIUrl":"https://doi.org/10.1016/S1006-1266(08)60052-8","url":null,"abstract":"","PeriodicalId":15315,"journal":{"name":"Journal of China University of Mining and Technology","volume":"66 1","pages":"245-249"},"PeriodicalIF":0.0,"publicationDate":"2008-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74803558","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 9
Numerical analysis of grinding power consumption of a vertical planetary mill 立式行星磨机磨削功率消耗的数值分析
Journal of China University of Mining and Technology Pub Date : 2008-06-01 Epub Date: 2008-07-22 DOI: 10.1016/S1006-1266(08)60066-8
Xue-di HAO , Dong-mei ZHU , Zhi-rui BIAN , Xin WANG
{"title":"Numerical analysis of grinding power consumption of a vertical planetary mill","authors":"Xue-di HAO ,&nbsp;Dong-mei ZHU ,&nbsp;Zhi-rui BIAN ,&nbsp;Xin WANG","doi":"10.1016/S1006-1266(08)60066-8","DOIUrl":"10.1016/S1006-1266(08)60066-8","url":null,"abstract":"<div><p>Planetary wheel rolling on a coal-bed was simplified as rigid wheel rolling on the coal-bed with a rigid base when a Vertical planetary mill (VPM) is running. Based on our analysis, we conclude that the Bekker formulation for computing rolling resistance is not applicable to calculate directly the rolling resistance of the wheel. According to the principle of the Bekker apparatus, pressure-sinkage curves were obtained by tests on a piece of mono-axial consolidation apparatus used in soil-mechanics. The deformation modulus of the coal-bed was calculated using elastic mechanics. A finite element model of the planetary wheel coal-bed was built up by the use of a rigid and a Drucker-Prager material model in LS-DYNA. According to the simulation results, the wheel rolling resistance, the grinding power consumption and the motor power of the mill were calculated and the mistake in the initial design of the mill was modified. The simulation results agree well with the results of the semi-industrial tests.</p></div>","PeriodicalId":15315,"journal":{"name":"Journal of China University of Mining and Technology","volume":"18 2","pages":"Pages 311-315"},"PeriodicalIF":0.0,"publicationDate":"2008-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/S1006-1266(08)60066-8","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82989466","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
Development of 30Cr06A, a high strength cast steel and its welding ability 研制了30Cr06A，一种高强度铸钢及其焊接能力
Journal of China University of Mining and Technology Pub Date : 2008-06-01 Epub Date: 2008-07-22 DOI: 10.1016/S1006-1266(08)60063-2
You-jin GAO
{"title":"Development of 30Cr06A, a high strength cast steel and its welding ability","authors":"You-jin GAO","doi":"10.1016/S1006-1266(08)60063-2","DOIUrl":"10.1016/S1006-1266(08)60063-2","url":null,"abstract":"<div><p>High performance hydraulic supports have a high requirement in strength, toughness and welding ability of socket material. Targeting this problem, we analyzed the properties of the high strength socket material 30Cr06, used in high performance hydraulic supports both at home and abroad and developed a new kind of high strength cast steel 30Cr06A, by making use of an orthogonal experiment, which provided the design conditions for its optimal composition. The result shows that the strength and toughness of the newly developed high strength cast steel 30Cr06A is much better than that of 30Cr06. Theoretical calculations, mechanical property tests and hardness distribution tests of welded joints were carried out for a study of the welding ability of the new material, which is proved to be very good. Therefore, this 30Cr06A material has been successfully used in the socket of high performance hydraulic support.</p></div>","PeriodicalId":15315,"journal":{"name":"Journal of China University of Mining and Technology","volume":"18 2","pages":"Pages 296-299"},"PeriodicalIF":0.0,"publicationDate":"2008-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/S1006-1266(08)60063-2","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73921415","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 3
Multi-object optimization design for differential and grading toothed roll crusher using a genetic algorithm 基于遗传算法的差动分级齿辊破碎机多目标优化设计
Journal of China University of Mining and Technology Pub Date : 2008-06-01 Epub Date: 2008-07-22 DOI: 10.1016/S1006-1266(08)60067-X
La-la ZHAO, Zhong-bin WANG, Feng ZANG
{"title":"Multi-object optimization design for differential and grading toothed roll crusher using a genetic algorithm","authors":"La-la ZHAO,&nbsp;Zhong-bin WANG,&nbsp;Feng ZANG","doi":"10.1016/S1006-1266(08)60067-X","DOIUrl":"10.1016/S1006-1266(08)60067-X","url":null,"abstract":"<div><p>Our differential and grading toothed roll crusher blends the advantages of a toothed roll crusher and a jaw crusher and possesses characteristics of great crushing, high breaking efficiency, multi-sieving and has, for the moment, made up for the shortcomings of the toothed roll crusher. The moving jaw of the crusher is a crank-rocker mechanism. For optimizing the dynamic performance and improving the cracking capability of the crusher, a mathematical model was established to optimize the transmission angle <em>γ</em> and to minimize the travel characteristic value <em>m</em> of the moving jaw. Genetic algorithm is used to optimize the crusher crank-rocker mechanism for multi-object design and an optimum result is obtained. According to the implementation, it is shown that the performance of the crusher and the cracking capability of the moving jaw have been improved.</p></div>","PeriodicalId":15315,"journal":{"name":"Journal of China University of Mining and Technology","volume":"18 2","pages":"Pages 316-320"},"PeriodicalIF":0.0,"publicationDate":"2008-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/S1006-1266(08)60067-X","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73145253","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 6
Kinetics of the leaching of TiO2 from Ti-bearing blast furnace slag 含钛高炉渣中TiO2浸出动力学研究
Journal of China University of Mining and Technology Pub Date : 2008-06-01 Epub Date: 2008-07-22 DOI: 10.1016/S1006-1266(08)60058-9
Xiao-hua LIU , Guo-sheng GAI , Yu-fen YANG , Zhi-tong SUI , Li LI , Jian-xia FU
{"title":"Kinetics of the leaching of TiO2 from Ti-bearing blast furnace slag","authors":"Xiao-hua LIU ,&nbsp;Guo-sheng GAI ,&nbsp;Yu-fen YANG ,&nbsp;Zhi-tong SUI ,&nbsp;Li LI ,&nbsp;Jian-xia FU","doi":"10.1016/S1006-1266(08)60058-9","DOIUrl":"10.1016/S1006-1266(08)60058-9","url":null,"abstract":"<div><p>Ti-bearing blast furnace slag is a valuable secondary resource containing about 24 percent of TiO<sub>2</sub>. In this paper a process of leaching Ti-bearing blast furnace slag with sulfuric acid to recover TiO<sub>2</sub>, and the kinetics of that reaction, are described. Under laboratory conditions the rate is controlled by a chemical reaction. The leaching reaction is in accord with a shrinking unreacted-core model. The apparent reaction order of the leaching reaction was 1.222 and the apparent activation energy was 87.01 kJ/mol. The model fits the observed data well until 90% of the TiO<sub>2</sub> has be leached from the particles. The model disagrees with observations during later periods of the reaction because the solution becomes supersaturated with Ti ions, which precipitate as H<sub>2</sub>TiO<sub>4</sub>. The assumptions of constant reactant concentration and that there is no effect from the product layer on diffusion, also cause the model to deviate from the actual values.</p></div>","PeriodicalId":15315,"journal":{"name":"Journal of China University of Mining and Technology","volume":"18 2","pages":"Pages 275-278"},"PeriodicalIF":0.0,"publicationDate":"2008-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/S1006-1266(08)60058-9","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"119572274","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 42
首页 上一页 下一页 尾页
0
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整，为了账户安全，请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
现在去查看 取消
×
提示
确定
请完成安全验证×
相关产品
×
本文献相关产品
联系我们：info@booksci.cn Book学术提供免费学术资源搜索服务，方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号：604180095
Book学术官方微信
小红书