出口欧洲Falns型煤炭漏斗车的研制

阐述了出口欧洲Falns型煤炭漏斗车的主要特点、技术参数、主要结构,介绍了该车相关的计算和试验情况.     

含瓦斯压力的煤体爆破数值模拟研究

为初步探讨瓦斯压力对煤体爆破过程的影响,运用ANSYS/LS-DYNA软件对含瓦斯压力的煤体爆破过程进行数值模拟研究,分析比较了瓦斯压力的存在与否对爆炸应力波的影响,得出了瓦斯压力对煤体的爆破起积极作用。数值模拟结果表明,存在瓦斯压力的煤体爆破是爆炸应力波、爆生气体和瓦斯压力共同作用的结果。     

燃油改煤技术在沥青混凝土拌和机上的应用

燃油改煤对于沥青混凝土拌和机使用成本的降低是相当明显的.介绍了燃油改煤技术并从经济性方面分析了其价值,可供其它企业设备改造时参考.     

桥梁加固薄弱受弯构件承载力极限状态计算

桥梁结构一般采用带载加固,其承载力应按两阶段受力构件计算。首先分析加筋和加混凝土两类受弯构件正截面承载力计算方法和计算公式。另外在试验研究的基础上建立考虑两阶段受力影响的桥梁加固钢筋混凝土受弯构件斜截面承载力计算公式和实用条件,分析两阶段受力对箍筋、弯起钢筋、混凝土和后加补强斜钢板抗剪承载力的影响。最后给出桥梁加固薄弱受弯构件设计实用计算方法。     

浅析煤矿长斜井TBM法综合施工技术

对煤矿长斜井采用TBM法施工技术的可行性、斜井的技术参数选择、TBM的选型、始发站的设计、主要技术问题及对策进行了深入的探讨,这些技术对煤矿建井方案的选择与设计具有重要的指导意义。     

新街台格庙矿区长距离大坡度斜井TBM设备选型探讨

新街台格庙矿区长距离大坡度斜井采用TBM工法在煤矿建设领域是一个崭新的课题,其综合性强,技术复杂,施工难点多,需要综合解决出碴、排水、防爆、物料运输等关键问题。针对新街台格庙矿区1号试验斜井和2号试验斜井的工程和地质特殊情况,并充分考虑长距离6°下坡掘进对设备的不利影响,对TBM设备的选型进行探讨。     

粉煤灰替代矿粉填料沥青混凝土马歇尔试验研究

粉煤灰具有与石灰岩矿粉相近的物理化学特性,这为沥青混合料中粉煤灰替代矿粉提供了可能。以常用的AC—16沥青混合料为基础,采用三种不同掺量方法,测定马歇尔试验指标,研究表明:掺入粉煤灰后AC-16沥青混合料的马歇尔稳定度和密实度得到了提高。     

Environmental assessment in the Prc: Third phase of the Qinhuangdao coal port

Abstract

The use of environmental impact assessment (EIA) is relatively recent in the People's Republic of China (PRC). China is committed to a reversal of the environmental degradation resulting from its industrialization and the central government has initiated a requirement for environmental planning and assessment for large development projects. Today large scale harbor developments are subject to the requirements of the National Environmental Protection Law (1979) and the Marine Environmental Law (1982). Because the third phase expansion of the coal port of Qinhuangdao would increase the ports’ capacity to handle coal by 30 to 50 million tons, an EIA was required.

Since 1981, the Environment and Policy Institute of the East‐West Center (EWC), Honolulu, has had a program of research focusing on the environmental impacts of coal transportation. On the basis of workshops in China that centered on the problems associated with planning coal transportation projects, the Ministry of Communications of the PRC invited the EWC to participate in the environmental assessment for the third phase coal port expansion at Qinhuangdao. A 10‐member team with specialities in environmental assessment and port environmental problems from five countries representing the EWC worked with a 25‐member team from four different agencies of the PRC Ministry of Communications.

This article describes the environmental regulations in the PRC that affect this harbor expansion, discusses the process by which the EWC assisted the PRC in the preparation of the environmental assessment and evaluates the assessment product against PRC regulations and U.S. standards. The most important contribution of the EWC was the provision of guidelines adapted from the EIA experience in several countries which will assist the PRC in the environmental evaluation of future pon expansion projects.     

煤矸石路堤施工质量研究

通过对煤矸石基层配合比和压实机理的研究,分析了煤矸石路基的压实过程和含水量、压实能量、铺筑层厚度等施工条件对填筑质量的影响,并提出了对填筑质量进行控制的方法。     

炊事车水路系统结构设计

介绍了炊事车水路系统结构设计时应考虑的问题,并结合多年的产品设计提出新的设计思路供有关人员设计参考。