企业车间系统结构与工艺复杂性多维度评价

提出了信息力、能和结构复杂性信息量度量的基本概念、定义、基本原理和数学模型;建立了企业生产系统结构复杂性评价的新尺度;提出了评价方法和系统结构的简约化、复杂性减少原理;并应用此理论与方法对井工企业掘进工作面系统结构复杂性评价进行了实证研究.     

论仿真方法在煤矿生产实习中的应用

市场经济条件下,煤炭类高校学生去煤矿生产实习出现了一些问题。仿真实习可以作为对现场生产实习有益补充的方法。仿真实习系统主要包括五大部分,行规与原理系统、工程实例系统、实习系统、评价系统与帮助系统。仿真实习有激发学生学习的兴趣和热情、培养学生的科研能力及培养学生的管理能力的优势。     

安全生产必须增强职工安全意识

<正> 煤矿安全生产中,职工的安全生产意识是一个很重要的因素。增强职工安全生产意识的关键又在于掌握科学和切合实际的方法。永荣矿务局双何煤矿对增强职工安全生产意识做了有益的尝试。 一、抓“双基”教育,强化职工法规意识 “双基”教育。即基础安全知识、基础安全技能的教育。之所以要抓“双基”教育,是因为煤矿血的教训唤醒我     

面向安全硬约束的煤矿生产物流效率优化研究

在保证安全生产前提下实现效率最大化是煤炭生产企业亟需解决的现实问题。本文结合煤矿生产物流系统的复杂性特征,首先从人员素质、机械装备、环境改善、安全管理、应急救援等方面确定了煤矿生产物流的安全投入指标,运用响应曲面法分析了安全指标与安全水平间的作用关系,确定了煤矿生产物流安全硬约束条件;然后以效率最大化为目标函数、安全目标和资源投入为约束条件,构建了煤矿生产物流效率优化模型;最后通过实例验证了模型的有效性及适用性,为安全生产前提下实现资源优化配置,提高煤矿生产物流效率提供了科学依据。     

煤矿生产系统机电设备设计的研究与分析

煤矿机电是矿井生产环节的重要组成部分,矿井内部的每一个生产环节都与之息息相关。矿区的机电设备的设计与安装直接关系到煤矿安全生产。本文以某矿区生产系统机电设备为讨论对象,通过理论和实例的综合,探讨了现代化煤矿生产系统中机电设备设计的方法与措施。为以后的技术改造和其他矿区的设计提供了参考,也为保障煤矿井下工作人员的人生安全提供了保障。     

面向敏捷制造的协同生产制造资源选择决策

本文在对制造资源选择与评价的相关文献进行综合分析的基础上,对敏捷制造环境下协同生产制造资源的评价指标体系和评价方法进行了深入研究.构造了制造资源选择与评价的指标体系;结合效用理论、群体决策方法和最新标度研究成果对AHP方法进行了修正,提出了新的AHP方法模型和评价制造资源优劣的虚拟价值的概念及其计算方法;最后以某重型机械公司为背景,运用该模型进行了实例分析.本文方法对现行制造模式下供应体系的决策亦有借鉴意义.     

非独立并联生产系统的DEA效率评价研究

对复杂生产系统进行效率评价,是改善其生产效率的基础.针对非独立并联结构生产系统的效率评价问题开展研究.首先,将两阶段非独立并联生产系统等价为先并联后串联结构的混联生产系统;其次,将混联生产系统的整体效率定义为各串联子系统效率的乘积,而各个串联子系统的效率则定义为内部各并联子系统效率的加权和,并给出了对应的DEA效率评价模型;最后,有关定理和算例分析证实了该模型能更合理地评价此类生产系统的技术效率,能够更大程度地挖掘系统整体性能改善的潜力.     

探索煤矿企业思想政治工作对安全生产的影响

随着我国经济的不断发展,煤矿能源的需求量越来越大,促使煤矿行业也得到了不断的发展。近年来,由于煤矿事故时常发生,煤矿的安全问题受到了人们的高度关注。煤矿的安全生产直接关系着人们的生命与财产安全,也对经济的改革与发展以及社会的稳定有着一定的影响。因此,在煤矿企业生产过程中,应该加强思想政治教育工作,不断培养生产人员的安全意识,避免安全事故的发生。同时,在保障人员生命安全的前提下,应促进经济效益和社会效益的提升。因此,文章根据我国煤矿企业思想政治工作存在的问题,提出了加强煤矿企业的思想政治工作的有效手段,并且分析了煤矿企业思想政治工作对安全生产的积极影响,充分利用思政工作的主要阵地,提升全体生产人员的安全意识,从而促进煤矿企业可持续性发展。     

浅谈矿尘的危害与综合防尘措施在新桥煤矿的应用

煤矿生产给工业发展提供强大的动力支撑，给社会经济带来了巨额利润。但是煤矿是与大自然作斗争的一种生产方式，复杂的生产工艺、恶略的生产环境始终伴随着生产的整个过程，煤尘作为煤矿生产中一种客观存在的危害因素，威胁着煤矿职工的身体健康及生命安全，如何将煤尘对职工的危害降低至最小是煤矿行业亟待解决的问题。     

强化安全生产意识 加强顶板管理 搞好煤矿安全生产

本文结合永春煤矿南一井的实际,通过对煤矿顶板压力的产生,顶板事故发生的原因分析,提出了防范措施,加强安全生产教育,强化安全生产意识,分析、研究、认识、掌握、运用矿山压力的规律,认真安全检查、验收,加强现场顶板管理,积极组织安全技术培训,提高职工队伍素质,实现了煤矿安全生产。     

Bottleneck identification and ranking model for mine operations

Abstract

Mining has a long history of production and operations management. Considering the increasing complexity of reserves, declining metal grades, and worldwide price volatilities, mines have to operate more efficiently than ever. In recent years, companies have been adopting innovative solutions and technologies to reduce costs and remain competitive in the global market. Specifically, management of bottlenecks has been in the focus of the manufacturing industry for decades now. The mining industry has made significant advancements in process improvement tools using equipment, human, and asset tracking capabilities. However, to date, there is no holistic approach or system to identify and manage the bottleneck in the entire value chain of mining. This research proposes a new method to identify and rank the bottlenecks in a mine value chain. The method is applied in a coal mine and the results are presented in the case study.     

Interstitial Lung Diseases in the U.S. Mining Industry: Using MSHA Data to Examine Trends and the Prevention Effects of Compliance with Health Regulations, 1996–2015

Given the recent increase in dust‐induced lung disease among U.S. coal miners and the respiratory hazards encountered across the U.S. mining industry, it is important to enhance an understanding of lung disease trends and the organizational contexts that precede these events. In addition to exploring overall trends reported to the Mine Safety and Health Administration (MSHA), the current study uses MSHA's enforcement database to examine whether or not compliance with health regulations resulted in fewer mine‐level counts of these diseases over time. The findings suggest that interstitial lung diseases were more prevalent in coal mines compared to other mining commodities, in Appalachian coal mines compared to the rest of the United States, and in underground compared to surface coal mines. Mines that followed a relevant subset of MSHA's health regulations were less likely to report a lung disease over time. The findings are discussed from a lung disease prevention strategy perspective.     

复杂信息度量的安全系统结构复杂性评价

作为复杂性研究和安全研究理论与方法的进一步扩展,建立复杂格空间,搭建了复杂性参量的立体化刻画的框架,确定熵的信息度量为复杂格空间的大小(维度)的测度的尺度,构造出复杂性测度的全方位的测度体系;将此理论与方法应用与工程系统的复杂性研究中,以煤矿工程系统的安全系统复杂性研究为例,从矿井开拓巷道系统联结关系、节点、环节、矿井安全子系统复合性、矿井安全监测系统网络、安全设施设置、监测系统、井下人员定位系统测定点分布等结构复杂性要素,进行复杂性评价与实证研究.     

基于跳跃-扩散过程的煤炭资源采矿权估价三因素模型

煤炭资源采矿权可以被认为是一个多期多阶段的复合看涨期权,煤炭价格、便利收益和利率的随机波动都对煤炭资源采矿权价值有较大的影响。基于期权理论,构建了煤炭价格服从跳跃-扩散过程,利率和便利收益服从均值回复过程的煤炭资源采矿权估价三因素模型。实例运用表明,该模型较单因素模型、双因素模型更能体现资源所有者的权益。随着采矿权有效期的临近,关于利率、便利收益、煤炭开采成本和煤炭价格的信息趋于透明,这些因素的变动对采矿权的影响逐渐减弱。     

Automation in coal mining

A study of the 21st Century energy situation shows that coal must be the principal fuel, gradually followed by the renewable fuels which require fossil fuel to make and build the equipment. For a stable world the developed countries must help the less developed by providing all the tools necessary for self production of a decent standard of living, and to avoid world war all countries nust necessarily converge on a per capita energy usage about equal to the present world average per capita figure of 1·5-2 tons of coal equivalent. As oil runs out a substitute liquid fuel will have to be made from coal and from biomass because oil is uniquely suitable for road, sea and air transport and for agriculture. Coal can be mined without men going underground by directed drilling and by Telechirics—hands at a distance. In Telechiric mining, the coal would be won by conventional mining machinery but the human miners would erect, operate, maintain and repair this machinery by sitting in a control room on the surface and controlling telechirs which could move about the mine and would have mechanical hands which would respond exactly to every movement of the human master's hands. He would have touch and force feedback and three dimensional vision so good that he could use his trained craft skill of hands and eyes as though he were down the mine.     

Sequencing Rules for Productivity Improvements in Underground Coal Mining*

In this paper, we report on a unique two-machine, dynamic sequencing problem that was involved in a project designed to improve the productivity of underground coal mining operations. It was discovered that mine output was dependent on the particular sequence of faces the continuous miner and bolter worked. The problem is characterized by two unique features. First, the problem is unique because of the geological and safety constraints that must be satisfied by the sequence. Second, the scheduling problem is dynamic because the available job sets change as work progresses, and the production times change as coal is mined. Three heuristic approaches were developed and tested using mine parameters. The best heuristic had a worst case scenario of being within 2.7 percent of the optimal sequence and only a 1.1 percent chance of determining a better sequence. This heuristic resulted in an 8.1 percent productivity improvement.     

模糊信息分配方法及其在采煤工艺选择中的应用

本文应用模糊信息分配理论,依据典型工程实例,建立地质条件与综采工艺之间的非线性映射关系,达到识别地质条件合理确定综采工艺的目的。     

便利收益对煤炭资源采矿权价值的影响分析

煤炭资源采矿权可以被认为是一个多期、多阶段的复合看涨期权,其价值是煤炭资源储量价值的函数。便利收益在解释煤炭期货价格和现货价格联系方面具有显著的经济价值。通过分析便利收益的内涵和建立其计算模型,探讨了便利收益变化模型及其影响因素来揭示便利收益对煤炭资源采矿权价值的影响,并通过实例,分析了煤炭便利收益对煤炭资源采矿权价值影响的敏感性。