长钢走新型工业化道路的实践与思考

党的十六大报告鲜明地提出了“新型工业化”这个概念．并指出，要完成本世纪头20年经济建设和改革的主要任务，首要选择是“走新型工业化道路，大力实施科教兴国战略和可持续发展战略”。长治钢铁(集团)有限公司坚定不移地贯彻落实党的十六大精神，坚持改革发展，走新型工业化道路，有效解决几十年来一直想解决而一直不能得到很好解决的效率与效益、机制与活力、发展与环境及资源保护等一系列问题。长钢的实践证明，走有时代特点，符合客观规律和我国国情的新型工业化道路，必将使国有企业，特别是国有老企业焕发生机。     

浅议环境经济手段在我国的应用

随着经济的快速发展,环境污染问题成为制约我国经济进一步发展的瓶颈之一,严重地阻碍着我国经济与社会可持续发展战略的实施。本文指出了环境污染问题的特征,分析了以行政干预为主的方法本身所造成的缺陷,提出必须运用适当的环境经济手段来促进环保事业的发展。同时提出了选择环境经济手段的思路,并对其理论渊源、现状和前景等方面进行了分析。     

三峡左岸电站水轮发电机组失步保护

介绍了在2003年投产发电的三峡电站水轮发电机组VGS机型的配套失步保护。其中,重点介绍了失步保护的原理、失步逻辑、参数整定等;并就参数整定中的阻抗整定、系统振荡最大滑差频率做了详细阐述。     

粉质土地基中水冲沉板桩的单桩承载力试验

对粉质土地基中水冲沉板桩进行了单桩静力载荷试验，试验数据表明承载力为预制桩规范估算值的16％～20％。在采取水泥返浆进行桩土固结后。竖向承载力将提高，达到预制桩规范估算值的22％～27％。     

“Always a shadow of hope”: Heteronormative binaries in an online discussion of sexuality and sexual orientation

In this article, I examine an asynchronous online discussion about sexuality that lasted for several weeks and involved students at three different universities, seven of whom I interviewed. Although issues of gay rights and alliance groups were brought up, students focused primarily on the causes of homosexuality and whether homosexuality is natural or not, with one student insistently posting that homosexuality is unnatural because same-sex couples cannot experience “true love-making.” On one level the focus on the causes and naturalness of homosexuality (with few references to heterosexuality) reinforced the heteronormative binaries that often structure thinking and discussions about sexuality, a reinforcement that I initially found disheartening. However, in many ways I came to realize that this online thread still served important academic and personal purposes for students despite and because of being situated in binaries. Drawing from my reading of the posts and from discourse-based interviews with participants, I show that online discussions developed around heteronormative binaries can serve as catalysts for movement in students’ thinking about complex issues and that online spaces in particular are valuable forums for students to articulate and then complicate their understandings of issues relating to sexuality and sexual orientation.     

弯道零件的斜孔加工

对于零件弯道的两个3空间斜孔,原通过组合夹具定位后,采用划线加工,加工质量不能满足图纸要求。针对该问题,指出了划线加工的不足,并采用新的加工方法,即在立卧转换加工中心上,开发并运用其潜在的"循环19(即零点跟踪)"功能,从而显著提高了整机的性能。     

An approach based on Support Vector Machines and a K-D Tree search algorithm for identification of the failure domain and safest operating conditions in nuclear systems

The safety of a Nuclear Power Plant (NPP) is verified by analyzing the system responses under normal and accidental conditions. This is done by resorting to a Best-Estimate (BE) Thermal-Hydraulic (TH) code, whose outcomes are compared to given safety thresholds enforced by regulation. This allows identifying the limit-state function that separates the failure domain from the safe domain.In practice, the TH model response is affected by uncertainties (both epistemic and aleatory), which make the limit-state function and the failure domain probabilistic.The present paper sets forth an innovative approach to identify the failure domain together with the safest plant operating conditions. The approach relies on the use of Reduced Order Models (ROMs) and K-D Tree.The model failure boundary is approximated by Support Vector Machines (SVMs) and, then, projected onto the space of the controllable variables (i.e., the model inputs that can be manipulated by the plant operator, such as reactor control-rods position, feed-water flow-rate through the plant primary loops, accumulator water temperature and pressure, repair times, etc.). The farthest point from the failure boundary is, then, computed by means of a K-D Tree-based nearest neighbor algorithm; this point represents the combination of input values corresponding to the safest operating conditions.The approach is shown to give satisfactory results with reference to one analytical example and one real case study regarding the Peak Cladding Temperature (PCT) reached in a Boiling Water Reactor (BWR) during a Station-Black-Out (SBO), simulated using RELAP5-3D.     

Consolidation grouting technology for fire prevention in mined‐out areas of working face with large inclined angle and its application

The phenomenon of linear flow of slurry in mined‐out areas of working face with large inclined angle is a crucial issue that hinders grouting for fire prevention. The traditional way of grouting exerts a poor effect on inhibiting coal spontaneous combustion, so it is in urgent need of a suitable grouting technology for fire prevention in mined‐out areas with large inclined angle working face. This paper brings up the consolidation grouting method for fire prevention for the first time and conducts a systematic study on the flow characteristics of slurry and sedimentation characteristics of slurry in mined‐out areas with large inclined angle working face. Consolidation slurry materials and their ratio are optimized by experiments. Test platform has been established, and effectiveness of the consolidation grouting for fire prevention has been simulated. The results show that settling velocity of yellow mud increases at first and then decreases as the concentration of consolidation slurry materials ascends. The optimum mass concentration is 0.2%–0.8%. The flow speed of mud is greatly reduced by laying consolidation slurry materials (The decreasing range is approaching 50%). The retention of yellow mud in mined‐out areas has significantly increased. Finally, technology in working site has been developed; meanwhile, compressed air and spray between frames have been used during the period of working face, and the consolidated way of expansion bags in wood crib to lay consolidation slurry materials has been adopted during the period of stopping work. Field application shows that CO concentration at upper corner decreases significantly and eliminates signs of spontaneous combustion. Besides, the flowing water becomes clearer, and effectiveness of the consolidation grouting is remarkable after laying consolidation slurry material band. Research results can provide theoretical guidance to technology for fire hazard prevention in mined‐out areas with large inclined angle. Copyright © 2016 John Wiley & Sons, Ltd.