振动筛常见故障及处理方法

对筛分过程中振动筛常见的几种故障做了分析，并针对不同原因给出了不同的解决方法。     

岩巷掘进中影响爆破效率的主要因素分析

论述了岩巷掘进中影响爆破效率的主要因素，并提出了影响因素的合理确定和相应的技术措施。     

阁山玄武岩矿床简介

阁山玄武岩位于黑龙江省绥棱县绥棱镇北东方向37km处。矿床形成于新生界第四系下更新统。该矿床用于建筑石料开采已30余载,目前用于板材开发。1 矿区地质特征矿区所处大地构造位置属新华夏系第二隆起带伊春—五常断裂带边缘,东部为张广才岭隆起带次一级构造单元。西南部为松嫩     

矿用提升机转子串电阻调速的接线方式分析与改进

就矿用提升机转子串电阻的调速方法的接线方式进行了分析,在此基础上提出了改用转子并电阻的调速方法,经计算比较,该方法大大减少调速用电阻箱及段电阻电流,调速方式灵活。     

Heavy metals distribution in fly ash from gangue power plant

To make assessment on its environmental security, fly ash samples were collected from the gangue power plant. Total content of heavy metals in sieved fly ash were analytically determined. We also carried out Tessier extractive experiments to check the chemical species of heavy metals. Experiment results show that the content of Cu, Zn, Pb and Cd ascend when particle size is smaller. Cu, Zn, Pb and Cd obviously enrich in particulate fly ash. The chemical species of heavy metal distribution ranking sequence generally is residual〉organic combinative〉Fe-Mn oxide combinative〉carbonate combinative〉ion-exchangeable. Lead＇s amiable-move species were high in proportion, amounted to 35%. Total content of Cadmium is at low level, but its ion-exchangeable species is relatively high in proportion. Nickel and zinc is mainly distributed in residue. Cu is mainly distributed in residue and organic combinative form. The content of manganese is relatively high in fly ash, and the carbonate combinative iron-manganese oxide combinative species are main chemical form. Cr is mainly distributed in residue, and its other chemical species are at low level. Compared with the soil background value of study area and Shandong Province, the content of Cu, Ni, Zn, Mn and Cr in fly ash of gangue power plant is lower. While contents of Pb and Cd were higher than background value, and amiable-move species is relatively high in proportion. They are more apt to cause heavy metal pollution.     

超长综放面矿压规律与支架适应性分析

通过对兴隆庄煤矿4326超长综放工作面矿压实测数据分析，初步得出了超长综放工作面的顶板垮落特征和矿压显现规律，分析了支架的工作特性和适应性，提出了支架进一步完善的建议，为支架设计选型提供了科学依据。     

对煤矿主要节电途径的探讨

根据煤矿生产的特点，对煤矿供电系统进行了分析，对变压器、线路的经济运行方式进行了探讨。     

采区边角煤开采技术方案探讨

该文从兴隆庄煤矿采区边角煤的形成原因入手 ,初步探讨了采区边角煤的开采技术方案 ,并指出轻型支架综采放顶煤是兖州矿区边角煤开采须优先发展的一个方向     

代表委员畅议新农村

建设社会主义新农村,是今年两会期间代表委员们热切讨论的议题之一。会议期间,代表委员们纷纷表达了各自对新农村建设的建议。陈耀邦委员:尽快出台农民合作经济组织法全国政协委员陈耀邦2006年3月8日下午在政协十届四次会议第二次全体会议上代表全国政协经济委员会发言时,建议尽快出台农民合作经济组织法。陈耀邦说,我国农民专业合作经济组织的不断发展,对于稳定农村社会、全面提高农业竞争力和建设社会主义新农村意义重大,但该组织目前还处于初步发展阶段,参加的农户在全国所占比例还不到十分之一,而且各地发展很不平衡。在发展中还有很多…     

旋挖钻孔混凝土灌注桩常见质量问题防治措施

针对桩位偏移、桩孔倾斜、塌孔等旋挖钻孔混凝土灌注桩常见的质量问题，就其产生的原因进行了分析，并提出相应的预防措施和处理办法。