深部强采动大巷硐室修护补强技术——以万家庄煤矿为例

以万家庄煤业2#煤层深部强采动一号变电所硐室为工程背景,探究深部大巷硐室强采动破坏机理及强采动围岩稳定性控制原理,分析深部强采动大巷硐室修护补强方案,并结合现场工业性试验优化相关支护技术参数。研究结果表明：2#煤层顶板为复合软岩顶底板,极易受到采场周围的岩层运动、应力集中和应力重新分布的影响,导致一号变电所硐室围岩矿压显现剧烈;煤壁前方支承压力幅值随着远离工作面呈现出近场快速增加、远场缓慢降低的趋势;硐室受到的采动影响较为剧烈,在两翼工作面回采期间,围岩最大变形量为155.8 mm,支护效果显著改善,有力地保障了工作面安全高效回采。     

Do promotion and prevention focus influence impulse buying: The role of mood regulation,shopping values,and impulse buying tendency

Earlier researchers have observed that an individual consumer's mood plays a significant role in increasing the impulsiveness, which leads to impulsive buying. The literature on shoppers' motivational traits has profoundly acknowledged the impact of these traits and mood regulation constructs on individual shopping values. The present study is a pioneer attempt proposing a comprehensive model, which incorporates three main antecedents (motivation, mood and value) of buying behaviour that influence the consumer purchasing decision. The paper empirically explores the liaison between the regulatory focus (promotion-focused and prevention-focused motivations), mood regulation (mood monitoring, mood clarity and mood repair), shopping values (hedonic and utilitarian), and impulsive buying behaviour. The outcomes suggest that two regulatory focus motives influence mood clarity. Mood repairing and mood monitoring impact hedonic shopping values, which has a substantial impact on consumers' impulsive buying tendency. The paper closes with theoretical and practical inferences, limitations, and discussion on the potential scope for future research.     

静电除尘器常见故障的诊断及修复

本文探讨了静电除尘器在专业化煤炭码头应用中的常见故障,原因分析等,并提出了静电除尘器的故障修复方法。     

浅谈农用拖拉机维修保养技术

随着市场经济的不断发展和进步,大小农用运输车和拖拉机逐渐增多,而"半路出家"的生手也很多,出现故障束手无策,所以学习和掌握农用运输车和拖拉机的一般知识,学会农用运输车和拖拉机常见故障的应急修理是当务之急,本文结合一些实际工作经验,简要地阐述了农用拖拉机维修保养技巧及其应注意的问题。     

变压器运行和维护

保证设备处于良好的技术状态是确保变压器安全运行的重要内容.为了确保设备的安全运行,应及时发现与消除设备缺陷,做到防患于未然,并以此为日后的设备检修及试验等工作计划提供依据.     

The impact of consumers' time constraint and conspicuous consumption behaviour on the throwaway society

In highly competitive economies, productivity is always increasing as entrepreneurs, driven by the profit motive, strive to build a better mousetrap. Over time, this has given consumers a wealth of material goods. However, within this type of economy, the consumers need to consume all that is produced or else there will be distortions in the labour markets. However, as it turns out, we are able to consume all that is produced by having transitioned into a throwaway society, but there are environmental consequences associated with the replacing of malfunctioning household products instead of repairing and reusing these products. There are a number of factors responsible for causing consumers to replace a malfunctioning household product as opposed to repairing the product for reuse. The research in this paper will focus on two of these factors. The first factor is the time constraint that consumers are faced with and the second factor is conspicuous consumption. This research uses the results of an international survey conducted in seven different countries at different stages of economic development. The survey was conducted between November, 2015 and December, 2016. The results show that both the time constraint factor and the conspicuous consumption factor are significant in determining that if a consumer will look to replace a malfunctioning household product as opposed to repairing the product for further reuse. Furthermore, as more nations continue to develop economically and their GDP per capita grows, then the environmental impacts resulting from an increasing throwaway society by those nations will yield more hazardous environmental consequences.     

浅析公路桥梁维修养护质量控制要点

本文就如何做好桥梁养护维修工作,特别是高等级公路桥梁养护及其维修工作,提高旧桥承载能力和行车性能,延长服务年限等进行了详细的论述。     

高速公路沥青路面裂缝原因分析及维修技术应用探析

文章从高速公路养护管理方面对高速公路沥青混凝土路面的裂缝破损的类型、破损机理进行了分析,对裂缝维修技术的应用进行了初步探析。     

A minimum cost flow model for level of repair analysis

Given a product design and a repair network for capital goods, a level of repair analysis determines for each component in the product (1) whether it should be discarded or repaired upon failure and (2) at which location in the repair network to do this. In this paper, we show how the problem can be modelled as a minimum cost flow problem with side constraints. Advantages are that (1) solving our model requires less computational effort than solving existing models and (2) we achieve a high model flexibility, i.e., many practical extensions can be added. Furthermore, we analyse the added value of modelling the exact structure of the repair network, instead of aggregating all data per echelon as is common in the literature. We show that in some cases, cost savings of over 7% can be achieved. We also show when it is sufficient to model the repair network by echelons only, which requires less input data.     

自卸汽车车厢举倾机构液压系统故障分析与维修

液压举升倾卸机构是自卸车的重要工作系统,其性能的优劣直接影响着汽车的多个性能指标。本文先具体分析了若干种"液压自卸系统的故障的分析与排除"的情况,然后指出了自卸汽车的一些维修和保养技巧,最后总结了液压系统的相关注意事项。