男儿当自强——记霍州矿务局煤化公司下岗工史和平

在霍州矿务局煤化公司的曹村井口菜市场,有家只有两间门面的普通小饭店,别看它小,但每天前来就餐的职工却是络绎不绝。做店主的夫妻俩热诚服务,凭信誉待客,人和业兴生意旺,这就是该公司下岗职工史和平自强自立苦心经营的“惠美”饭店。饭店月平均销售额可达6000余元,成为那一带下岗职工艰苦创业的一个闪光点。     

Foxpro在养老保险管理中的应用

萍乡矿业集团有限责任公司是个百年老矿,现有在册参保员工30000余人.为提高广大基层劳资社保业务人员的工作效率,提高管理水平,我们利用Visual FoxPro6.0数据库管理软件,实现养老保险管理,取得了较好的效果.     

澄合二矿公司职工为灾区踊跃捐款

发生在四川省汶川县的特大地震,牵动了澄合二矿公司员工家属的心.地震发生第二天,该公司便召开紧急会议,研究援助方案.自5月13日开始,运输区、掘四队、采二队等16个基层单位相继展开捐款活动,区队干部以身作则,每人捐款100元,其他职工你50元、我10元,纷纷献出了自己的一片爱心.     

违章凿岩的悲剧

2008年1月26日,即旧历腊月十九,正是人们辞旧迎新、喜迎一年一度新春佳节的喜庆时刻,在四川省鑫源矿业公司的承包单位--广东十六冶工程处,发生了一起惨痛的死亡事故,给喜迎节日的矿工兄弟们心头蒙上了一层阴影,也为矿工兄弟们又一次敲响了生命的警钟:一定要按章作业,时刻勿忘安全!     

选挂式移动单轨吊车组在煤矿中的应用

1 引言 济宁二号煤矿南、北翼带式输送机机头部分都设置在主井煤仓上口处,由于设备几乎满负荷运转,假如一台设备在生产中出现故障,则须立即上井检修,我矿以前采取的措施是在硐室拱顶设置工字钢梁和三角架,用电动葫芦吊起设备,将其运到有轨道的带式输送机的另一侧,因而,在工作中必须拆掉输送机支架的4条支腿,并将设备上的冷却管路及线缆等拆下.     

选煤厂节能降耗对策初探

在社会全力倡导节能降耗的情况下,针对我国目前选煤行业"四耗"(水耗、电耗、油耗、介耗)展开深入研究,探寻选煤厂节能降耗的措施及方法.     

纳米银的制备方法及其应用

对纳米银的制备方法及其应用的研究进展进行了评述,对今后的发展趋势进行了展望.     

湖南铋业有限责任公司揭牌成立

6月26日,湖南柿竹园有色金属有限责任公司控股的"湖南铋业有限责任公司"在郴州市经济开发区揭牌成立,湖南省国资委、郴州市委、市政府、湖南有色控股集团等政府与单位的领导出席揭牌成立仪式,中国钨业协会、北京矿冶研究总院等49家单位发来贺电.湖南铋业有限责任公司注册资本1.5亿元人民币.     

Theoretical description of drawing body shape in an inclined seam with longwall top coal caving mining

Understanding the characteristics of drawing body shape is essential for optimization of drawing parameters in longwall top coal caving mining.In this study,both physical experiments and theoretical analysis are employed to investigate these characteristics and derive a theoretical equation for the drawing body shape along the working face in an inclined seam.By analyzing the initial positions of drawn marked particles,the characteristics of the drawing body shape for different seam dip angles are obtained.It is shown that the drawing body of the top coal exhibits a shape-difference and volume-symmetry characteristic,on taking a vertical line through the center of support opening as the axis of symmetry,the shapes of the drawing body on the two sides of this axis are clearly different,but their volumes are equal.By establishing theoretical models of the drawing body in the initial drawing stage and the normal drawing stage,a theoretical equation for the drawing body in an inclined seam is proposed,which can accurately describe the characteristics of the drawing body shape.The shape characteristics and volume symmetry of the drawing body are further analyzed by comparing the results of theoretical calculations and numerical simulations.It is shown that one side of the drawing body is divided into two parts by an inflection point,with the lower part being a variation development area.This variation development area increases gradually with increasing seam dip angle,resulting in an asymmetry of the drawing body shape.However,the volume symmetry coefficient fluctuates around 1 for all values of the seam dip angle variation,and the volumes of the drawing body on the two sides are more or less equal as the variation development volume is more or less equal to the cut volume.Both theoretical calculations and numerical simulations confirm that the drawing body of the top coal exhibits the shape-difference and volume-symmetry characteristic.     

稀散金属产业的观察与思考

分析了近年来国内外稀散金属产业的生产、应用、资源与市场状况.铟锡氧化物靶材、砷化镓晶片、锗红外材料、铼高温合金和硒在电解锰及玻璃的应用等已成为稀散金属的主要应用领域.稀散金属的产量快速增长达到历史高位而导致了市场的失衡.以GaInP_2/GaAs/Ge,CIGS和CdTe为代表的非硅系太阳能电池是稀散金属的新兴应用领域,将给稀散金属带来日益增长的需求.