2771面注浆加固底板浅议

注浆法是煤矿防治水有效的方法之一，在井陉矿务局三矿２７７１工作面注浆加固底板工程中取得成功，获得了良好的经济效益。     

THE INFLUENCE OF SCREEN PARAMETERS ON PERFORMANCE CHARACTERISTICS

A series of laboratory screening tests have been performed with the objective of evaluating the effect of feed rate, screen length and screen motion on the quality of separation. The separation performance has been evaluated by the use of proposed ISO Standard measures which are based on the partition curve. The laboratory rig, the test programme and results derived from it are discussed. The effect of screen length, feed rate and screen motion on the levels of screen performance as indicated by these measures and a normalised separation size parameter are discussed in relation to the assumed screening conditions for the tests reported and conclusions are summarised.     

煤矿企业科技创新管理的实践与基本走向

对潞安环能股份公司王庄煤矿科技创新管理体系和运行机制以及所取得的成效进行了总结和评价 ,并预测出了今后的发展趋向     

阳泉市煤矿采空区地质因素对公路的破坏

介绍了阳泉市煤矿采空区对公路建设所造成的危害，对其上覆岩层变形破坏的地质因素及其破坏机理作了分析，指出应该采取各种措施减少对公路的破坏。     

对完善安全风险抵押的我见

<正> 目前,煤炭系统普遍推行了安全风险抵押,尽管各单位实施的具体作法不尽相同,但作为一种运用经济杠杆来管理安全生产的手段,在安全生产实践中已发挥了一定的积极作用。从理论上看,推行安全风险抵押符合职工心理状态。一般讲客观环境的好坏,安全技措的强弱和人员素质的高低,是制约安全生产的三大要素。推行安全风险抵