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基于优化克里金插值方法的隧道主结构面建模 被引量:5
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作者 张琦 马艳宁 +2 位作者 王肖骏 沈益鑫 易文杰 《土木工程学报》 EI CSCD 北大核心 2022年第S02期74-82,共9页
在围岩地质条件复杂的隧道施工过程中,对隧道开挖面前方地质体的描述是安全设计施工的关键。隧道主结构面的展布形态是围岩物理力学性质以及围岩稳定性的控制性因素之一。采用几何概率方法对隧道主结构面在三维空间内的产状和尺寸进行估... 在围岩地质条件复杂的隧道施工过程中,对隧道开挖面前方地质体的描述是安全设计施工的关键。隧道主结构面的展布形态是围岩物理力学性质以及围岩稳定性的控制性因素之一。采用几何概率方法对隧道主结构面在三维空间内的产状和尺寸进行估计,并确定地质钻孔相关孔位参数,以准确获取用于插值的地质数据库。利用蚁群优化算法在离散数据中快速找到“巢穴”到“食物”之间最优路线的独特优势,将其应用于隧道主结构面建模中克里金插值方法的变异函数模型选择和参数优化,以克服其主观性和不确定性。通过结构面方差模型和结构面粗糙度系数的计算分析,验证优化克里金插值方法在隧道主结构面建模方面的有效性,实现较高的插值精度,可以应用于后续的三维复杂地质建模。 展开更多
关键词 主结构面模型 迹线 地质钻孔 克里金插值 蚁群优化算法
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岩体主结构面控制爆破技术的实践
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作者 赵继银 《矿业快报》 2005年第3期14-16,共3页
岩体中主结构面是控制岩体爆破效果的主要因素之一。在地下矿山深孔爆破中,合理运用主结构面控制爆破技术,可以提高每米崩矿量、降低炸药单耗、减少二次破碎量,极大地改善矿岩的爆破效果。
关键词 主结构面 控制爆破 爆破效果
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岩体主结构面控制爆破技术在矿山的应用试验
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作者 谷宝松 何思为 《首钢科技》 1996年第6期29-32,共4页
首钢建材化工厂应用岩体主结构面控制爆破技术在矿山进行了试验。试验结果表明:延米爆破量提高了54.5%;炸药单耗降低了22.1%,并优化了主要孔网参数,取得了显著的经济效益。
关键词 矿山 控制爆破 岩体主结构面
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岩体主结构面控制爆破试验研究
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作者 周智春 《中国矿山工程》 2004年第5期8-10,共3页
对岩体主结构面控制爆破理论进行分析研究和工业试验,并对今后发展方向提出个人的看法。
关键词 岩体 主结构面 菱形六
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结构体爆破机理及应用研究 被引量:1
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作者 肖正学 郭学彬 张志呈 《西南工学院学报》 1998年第3期49-53,共5页
本文通过理论分析和模型试验,探讨了岩体结构面对爆破效果的控制作用。同时对结构体爆破的基本原理及破岩机理作了较深入的分析。研究表明,合理布置炮孔和爆破作用方向,可以改善爆破效果,降低爆破成本。
关键词 结构体爆破 主结构面 应力波 破岩机理
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应用“结构体爆破技术”的问题与建议
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作者 银开州 《海南矿冶》 1995年第1期1-3,共3页
关键词 结构体爆破 爆破技术 主结构面 爆破参数 爆破质量 孔网参数 矿岩类型 炸药单耗 海钢公司 常规爆破
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结构体爆破技术的试验与应用
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《海南矿冶》 1994年第2期20-22,共3页
关键词 主结构面 爆破技术 结构体爆破 孔网参数 岩石结构 海钢公司 药量计算 延米爆破量 爆破效果 生产试验
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中深孔落矿工艺在有底柱崩落采矿法中的应用 被引量:2
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作者 姬书清 《有色冶炼》 2002年第6期113-115,139,共4页
爆破参数的优化在中深孔落矿的有底柱分段崩落采矿法中处于非常重要的地位 ,面对通过研究和试验所产生的各种孔网参数 ,如何择优而用是采矿技术人员面临的实际问题。本文从几年来采场爆破效果分析和理论探讨入手 ,分析了各种参数在胡矿... 爆破参数的优化在中深孔落矿的有底柱分段崩落采矿法中处于非常重要的地位 ,面对通过研究和试验所产生的各种孔网参数 ,如何择优而用是采矿技术人员面临的实际问题。本文从几年来采场爆破效果分析和理论探讨入手 ,分析了各种参数在胡矿的应用条件 。 展开更多
关键词 爆破参数 密集系数 抵抗线 孔底距 主结构面
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George Orwell's Non-linear Narrative in The Road To Wigan Pier
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作者 Bechir Chaabane 《Journal of Literature and Art Studies》 2014年第11期872-890,共19页
Orwell's text The Road to Wigan Pier, henceforth referred to as RWP, is problematic due to the ambiguity of its status as a literary genre. The text is subversive on many levels, namely on the level of form. In order... Orwell's text The Road to Wigan Pier, henceforth referred to as RWP, is problematic due to the ambiguity of its status as a literary genre. The text is subversive on many levels, namely on the level of form. In order to show some aspects of the author's challenge of the conventional norms and methods of literary writing, a comparison between the writer's original diary of the journey to the industrial North of England, the main site of the coal mines, and the present book could be of great import. This reveals the author's genuine intellectual ability to manipulate and rearrange the events and scenes of the story on the discourse level. The author's manipulation and rearrangement of the story (the journey), events and scenes, clearly reveals his potential literary creativity and imagination. Orwell has deployed many strategies to fulfil this purpose. Each strategy is actually a contribution to the author's overall argument and at the same time it constitutes a further aspect of subversion. The first aspect of subversion lies on the level of form itself. The form of the book is effectively very challenging. Contrary to the conventional view of the fictional novel, the study of Orwell's text based on Grrard Genette's model reveals his challenge of the basic novelistic parameters. The novelistic ingredients such as setting, characterisation, and plot development have been treated in a subverting way. Though not totally discarded, they have been manipulated for the purpose of the author's general argument, which is Socialism. For instance, characters in the novel are treated as types, that is, representatives of their class. Besides, the order of scenes and events has been rearranged for the purpose of foregrounding representative scenes like the description of the Brookers' lodging-house. The author's treatment of the material of the text is primarily based on his personal experience as an outside observer during his journey to the North. Therefore, the exploration of the novel from a structuralist perspective based on Genette's model does not merely aim at the pure application of some literary and critical approaches to Orwell's text. This may be misleading since the investigation may fall in superficiality and simplicity. But the strategy deployed is actually a further contribution to the author's general argument and a manifestation of the novel's status as a creative and subversive text. 展开更多
关键词 LITERARINESS fictionality TEMPORALITY non-linearity DEFAMILIARIZATION STRUCTURALISM formalism SOCIALISM
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Holism and the Individual: A Theoretical Conundrum
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作者 Jiri Subrt 《Sociology Study》 2013年第8期559-572,共14页
This article deals with one of the theoretical dilemmas of contemporary sociology: the dualism of the individualistic and holistic approaches. One of the most famous attempts to overcome this dualism is the structura... This article deals with one of the theoretical dilemmas of contemporary sociology: the dualism of the individualistic and holistic approaches. One of the most famous attempts to overcome this dualism is the structuration theory of Anthony Giddens, and alongside this is found the conception of social realism of Roy Bhaskar and Margaret Archer. Their efforts to link individualistic and holistic approaches are based on a varifocal attempt to explain the theoretical issues from both individualistic and holistic perspectives. The author of this article believes that there is an alternative solution to this problem, where both perspectives are "blended" in a theoretical explanation demonstrating that the concepts which we use in sociological theory--actor, action and structure--are inherently of dualistic nature, i.e., they are "duplex". 展开更多
关键词 Sociological theory INDIVIDUALISM HOLISM theoretical dilemma DUALISM
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Green House in Semi-arid Regions of Mexico
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作者 Maria de los Angeles Rechy Carvajal Emil von Roth Jose Alberto Murillo Rodriguez 《Journal of Environmental Science and Engineering(B)》 2016年第5期224-227,共4页
The subject structure was consisted of a proto-type house with plan dimensions of 8 m ×4 m. A variety of materials was used to the construction, with special emphasis on using environmentally friendly non-toxic m... The subject structure was consisted of a proto-type house with plan dimensions of 8 m ×4 m. A variety of materials was used to the construction, with special emphasis on using environmentally friendly non-toxic materials. The structure's core consisted of reinforced concrete frames with masonry infill walls. Inside faces of the walls and the roof's outside face were covered with proprietary composite panels, which are manufactured with a mixture of cement, volcanic ash, and local sawmill waste. These panels were analyzed for their physical and chemical properties, as well as for their resistance to decay and insects when subjected to extreme conditions for 15 years. The panels have also shown to provide thermal insulation and nonflammable when in direct contact with fire. The roof surface was further covered with a blend of local drought-resistant succulents and cacti. This study provides a detailed review of the construction process and materials employed. 展开更多
关键词 Prototype house thermal insulation non-combustible resistant to decay.
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