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掘进机旋转喷雾降尘装置试验研究

机械管理开发 2024年第7期39卷 94-95,99页

作者：陈守钰山西华阳集团新能股份有限公司山西阳泉045000

粉尘问题是煤矿开采过程中的关键问题之一,高浓度的粉尘容易引发肺部疾病,且容易产生爆炸。因此需要根据掘进机掘进过程设计一款旋转喷雾降尘装置,并对装置的结构、安装位置、关键元件进行分析,使用FLUENT与MATLAB对影响降尘效率的水流... 详细信息

粉尘问题是煤矿开采过程中的关键问题之一,高浓度的粉尘容易引发肺部疾病,且容易产生爆炸。因此需要根据掘进机掘进过程设计一款旋转喷雾降尘装置,并对装置的结构、安装位置、关键元件进行分析,使用FLUENT与MATLAB对影响降尘效率的水流压力、喷嘴个数进行探讨,通过单体试验研究降尘装置的喷雾范围、射程等参数,通过工业试验对比研究旋转喷雾降尘装置的降尘效果,为改善掘进机工作面的环境条件奠定理论与试验基础。

关键词：掘进机旋转喷雾降尘装置工业试验

Identification of the Ore-Forming Anomaly Component by MSVD Combined with PCA from Element Concentrations in Fracture Zones of the Laochang Ore Field,Gejiu,SW China

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Journal of Earth Science 2021年第2期32卷 427-438页

作者： Jiangnan Zhao shouyu chen School of Earth Resources China University of GeosciencesWuhan 430074China State Key Laboratory of Geological Processes and Mineral Resources China University of GeosciencesWuhan 430078China

Fault and fractures are well-developed in the Gejiu tin-polymetallic district,and they are closely related to the formation and distribution of *** this paper,the principal component analysis(PCA)and multifractal singular value decomposition(MSVD)methodologies were applied for identification of the ore-forming anomaly components from element concentrations of fault rocks in the Laochang ore field,*** results show that:(1)the wall rocks and fault rocks have anomalous concentrations of ore-forming elements,indicating that these elements are mainly derived from fluid/rock interaction in the fracture zones;(2)PCA based on clr-transformed data was used to recognize significant association anomalies of ore-forming elements,which lay a foundation for further extracting ore-forming anomaly components from the element association anomalies related to Sn-Cu mineralization;(3)MSVD could effectively explore local anomaly features and decompose ore-forming element association anomalies associated with buried mineralization in more *** ore-forming element anomaly components can delineate ore-finding Sn-Cu polymetallic deposits more exactly than the ore-forming element association anomalies.

关键词： singular value decomposition(SVD) principal component analysis(PCA) ore-forming element anomaly components Sn-Cu polymetallic ore-finding targets Gejiu Sn-Cu ore field SW China

Variable sets method for urban flood vulnerability assessment

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Science China(Technological Sciences) 2013年第12期56卷 3129-3136页

作者： chen shouyu XUE ZhiChun LI Min ZHU XuePing School of Hydraulic Engineering Dalian University of Technology

On the basis of dialectics basic laws and mathematical theorems of variable sets,this paper proposes a variable sets method for urban flood vulnerability *** this method,the comprehensive relative membership degree of multi-indices is represented by an index relative difference degree,which follows the characteristics of dialectical philosophy and *** to the quality-quantity exchange theorem,the relative difference degree of two adjacent levels(h and h+1),whose index standard interval values cross the boundaries,equals 0 in the urban flood vulnerability *** the basis of the opposite unity theorem,the sum of relative membership degrees should be equal to 1 when indices lie in the adjacent degrees h and h+*** variable sets method is proved to be theoretically rigorous and computationally *** paper takes 29 cities of Hunan province as an example to assess the urban flood vulnerability,and then compares the results from this newly developed method with the assessment results obtained from the fuzzy comprehensive evaluation and fuzzy set pair analysis methods.

关键词：脆弱性评估城市防洪模糊综合评判相对隶属度数学定理集对分析方法对立统一辩证法

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Trace elements of pyrite and S,H,O isotopes from the Laowan gold deposit in Tongbai,Henan Province,China:implications for ore genesis

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Frontiers of Earth Science 2020年第3期14卷 578-600页

作者： Yuehua Zhao shouyu chen Jianli chen Shuaiji Wu Faculty of Earth Resources China University of GeosciencesWuhan430074China State Key Laboratory of Geological Processes and Mineral Resources China University of GeosciencesWuhan430074China No.1 Geological Exploration Institute Henan Bureau of Geo-exploration and Mineral DevelopmentZhengzhou450001China

The Laowan deposit is a large gold deposit in the Qinling-Dabie orogenic belt where pyrite is the main Au-bearing mineral *** present results from the occurrences of gold,trace elements and sulfur isotopes of pyrite,and hydrogen and oxygen isotopes of quartz and calcite to elucidate the sources of ore-forming fluid;the genesis of pyrite and the ore-forming *** field observations,five generations of pyrite are identified;one formed in a metamorphic-diagenetic epoch(PyI),and the others during four mineralization stages:1)the coarse-grained pyrite-quartz stage(PyII),2)the quartz and medium-to fine-grained pyrite stage(PyIII),3)the polymetallic sulfide stage(PyIV),and 4)the carbonate-quartz stage(PyV).Gold mainly occurs in PyIII and *** find that Au,Ag,Pb,and Cu are incorporated into pyrite as micro-/nano-inclusions and that Co,Ni,As,and Se enter the pyrite lattice via isomorphous *** Co/Ni values and Se concentrations indicate that PyI formed from metamorphic hydrothermal fluids and that pyrites(PyII,PyIII,and PyIV)from the ore-forming stages typically reflect a hydrothermal genesis involving magmatic ***δ^34S values of PyI(1.45‰-2.09‰)are similar to that of plagioclase amphibole schist,indicating that S was primarily derived from wall rock,while those of PyII,PyIII,and PyIV(3.10‰-5.55‰)suggest that S was derived from the Guishanyan Formation and the Laowan *** four mineralization stages show a systematic decrease inδD(from−77.1‰to−82.8‰,−84.7‰,and−102.7‰),while theδ^18OH2O values showed a gradual decrease from 5.7 to 2.7‰,1.0‰,and−1.3‰.These data show that the ore-forming fluid was similar to a mixture of magmatic and meteoric ***,we conclude that the Laowan gold deposit is related to magmatic-hydrothermal fluid.

关键词： pyrite trace elements S-H-0 isotopes genesis Laowan gold deposit

Exponentially increased nucleation ability for poly(L-lactide) by adding acid-oxidized multiwalled carbon nanotubes with reduced aspect ratios

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Science China Chemistry 2013年第2期56卷 181-194页

作者： ZHONG Yong ZHANG YaQiong YANG JingJing LI WenLin WANG ZhiGang XU DongHua chen shouyu DING YunSheng CAS Key Laboratory of Soft Matter Chemistry Department of Polymer Science and Engineering Hefei National Laboratory for Physical Sciences at the Microscale University of Science and Technology of China State Key Laboratory of Polymer Physics and Chemistry Changchun Institute of Applied Chemistry Chinese Academy of Sciences Institute of Polymer Materials & Chemical Engineering School of Chemical Engineering Hefei University of Technology Anhui Key Laboratory of Controllable Chemistry Reaction & Material Chemical Engineering

Acid-oxidized multiwalled carbon nanotubes (A-MWCNTs) with a range of reduced aspect ratios (from about 11 to 5.8) were obtained by acid oxidization of MWCNTs in the mixture of HNO 3 and H 2 SO 4 for varying periods of 1, 3, 8 and 12 h, respec- tively. The aspect ratios and surface functionalization of A-MWCNTs were well characterized by scanning electron microsco- py (SEM), Fourier transform infrared spectroscopy (FTIR), Raman spectroscopy and thermogravimetric analysis (TGA). Poly(L-lactide)/A-MWCNT composites containing 0.5 wt% A-MWCNTs with a range of reduced aspect ratios were prepared by solution cast. The effects of added A-MWCNTs on the isothermal crystallization kinetics of poly(L-lactide)/A-MWCNT composites were investigated by means of differential scanning calorimetry (DSC), rheology and polarized optical microscopy (POM). It is surprising to find that not only the addition of A-MWCNTs effectively increases the poly(L-lactide) (PLA) crys- tallization kinetics, but also the nucleation ability of A-MWCNTs for PLA crystallization exponentially increases with the re- duced aspect ratio, that is to say, those with lower aspect ratios show much stronger nucleation ability for PLA crystallization than those with higher aspect ratios. The exponentially increased nucleation ability of A-MWCNTs with a range of reduced aspect ratios for PLA crystallization is disclosed.

关键词：多壁碳纳米管 L-丙交酯核能力长宽比倍增氧化等温结晶动力学傅立叶变换红外光谱

An　Exact　Penalty　Function　Method　for　Linear　Static　Stackelberg　Problem　with　Multiple　Leaders　and　Multiple　Followers

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Systems Science and Systems Engineering 1996年第3期6卷 312-318页

作者： LI Dengfeng chen shouyu(Department of Civil Engineering, Dalian Uaiversity of Technology, Dalian, 116024, China)

The paper models and analyzes the linear static stackelberg model with multiple leaders and multiple followers in which each decision maker within his group may or may not cooperate. An exact penalty function method is developed. The duality gaps of the followers’ problems are appended to the leaders’ objective function with a penalty. This structure leads to the decomposition of the composite problem into a series of linear programming leading to an efficient algorithm. We prove that local optimality is reached for an exact penalty function and illustrste the method with three examples. Our model extends the stackelberg leader-follower model. The analysis in this paper hopefully provides some forther insights about types of the static stackelberg leader-follower model.

关键词： stackelberg game cooperation penalty function method linear programming.

质量互变定理的两种表示——兼论集对分析中介不确定性

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辽宁工程技术大学学报（自然科学版） 2010年第5期29卷 724-728页

作者：陈守煜大连理工大学建设工程学部辽宁大连116023

针对哲学规律数字化与数学思维辩证化是数学领域研究的两大重要命题,根据可变模糊集理论率先给出唯物辩证法哲学三大规律之一是对两大研究命题的重要突破,质量互变规律严密的数学定理——质量互变定理的两种表示。根据该定理分析指出集... 详细信息

针对哲学规律数字化与数学思维辩证化是数学领域研究的两大重要命题,根据可变模糊集理论率先给出唯物辩证法哲学三大规律之一是对两大研究命题的重要突破,质量互变规律严密的数学定理——质量互变定理的两种表示。根据该定理分析指出集对分析中介不确定性概念的错误。

关键词：可变模糊集质变量变质量互变定理集对分析

Metallic Mineral Resources Assessment and Analysis System Design

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Journal of Earth Science 2000年第3期19卷 114-117页

作者： Hu Guangdao chen Jianguo chen shouyu Institute of Mathematical Geology and Remote Sensing, China University of Geosciences, Wuhan 430074, China

This paper presents the aim and the design structure of the metallic mineral resources assessment and analysis system. This system adopts an integrated technique of data warehouse composed of affairs processing layer and analysis application layer. The affairs processing layer includes multiform databases (such as geological database, geophysical database, geochemical database), while the analysis application layer includes data warehouse, online analysis processing and data mining. This paper also presents in detail the data warehouse of the present system and the appropriate spatial analysis methods and models. Finally, this paper presents the prospect of the system.

关键词： mineral resources assessment data warehouse spatial analysis.

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围岩稳定性评价的模糊可变集合工程方法

岩石力学与工程学报 2006年第9期25卷 1857-1861页

作者：陈守煜韩晓军大连理工大学土木水利学院辽宁大连116024

围岩稳定性评价是确保工程安全的一个关键性环节,由于受到岩体内部结构和外部环境等多种因素的综合作用,围岩稳定性不仅具有随机性,而且具有模糊性的特点。以工程模糊集理论为基础,建立以相对差异函数为基础的模糊可变集合工程方法,并... 详细信息

围岩稳定性评价是确保工程安全的一个关键性环节,由于受到岩体内部结构和外部环境等多种因素的综合作用,围岩稳定性不仅具有随机性,而且具有模糊性的特点。以工程模糊集理论为基础,建立以相对差异函数为基础的模糊可变集合工程方法,并考虑模型参数指标权向量的可变性,对围岩稳定性进行评价,以体现该方法的特点与优点,增加评价结果的可靠性。通过实例,详细列出该方法的计算步骤,并将结果与其他方法进行比较,验证该方法的合理性与优越性。

关键词：岩石力学围岩稳定性模糊可变集合相对差异函数级别特征值