逃生路线论文-吴静

逃生路线论文-吴静

导读:本文包含了逃生路线论文开题报告文献综述及选题提纲参考文献,主要关键词:water,inrush,channel,minimum,rock,thickness,escape,routes,optimization,karst,water,tracing

逃生路线论文文献综述

吴静[1](2018)在《岩溶隧道突水通道扩展机理、最小防突厚度及逃生路线优化研究》一文中研究指出Water(mud)inrush is one of the main geological disasters during the karst tunnel construction.The occurrence frequency and death toll caused by water(mud)inrush are both on the top levels in serious tunnel accidents at home and abroad.So in this thesis,the expansion mechanism of water inrush channel,minimum rock thickness between excavation opening and filling-type karst cave,and escape routes optimization after water inrush from the karst tunnel are systematically investigated by theoretical analysis,numerical simulation and engineering projects.Moreover,as for the Qiyueshan karst tunnel,solute transport characteristics and groundwater connection structures of karst water tracing,risk evaluation of water and mud inrush are further researched by field tests,numerical simulation,theoretical analysis and engineering application.(1)Considering the effects of water erosion,seepage force and soil cohesion,three-dimensional force analysis for the soil particle on the side wall of water inrush channel is conducted.The critical condition for incipient particle motion is established.The incipient flow velocity for sliding instability and rolling instability of the particle is deduced respectively.The criterion of incipient particle motion is proposed.The expansion mechanism of water inrush channel is revealed.The influencing factors of the incipient flow velocity are analyzed and the rules of particle loss are discussed.Finally,through the analysis of particle-fluid coupling and calculation of DEM-CFD coupling,numerical simulation for the incipient particle motion and channel expansion is implemented,and the proposed mechanism of incipient particle motion is verified.(2)Four typical karst cave locations(i.e.,at the top,bottom,lateral and front of the tunnel),two types of filled karst caves,with water and with water-mud mixture,are studied,to estimate the required thickness of supporting rock stratum in order to prevent water and mud inrush under earthquake conditions.Generalized models and computational techniques are developed for such conditions.The models consider the shear,bending and punching failures of the supporting rock stratum against the pressure from filling materials in the karst caves.Combined with quasi-static and dynamic theories,computational models are developed to estimate the minimum safety thickness of the rock stratum between the excavation opening and the filling-type karst cave.The factors governing the minimum safety thickness of the supporting rock stratum to resist water and mud inrush from the karst caves are analyzed.Finally,the theoretical models and computational methods are verified with case studies.(3)Numerical simulation of the gas-liquid two-phase flow is carried out by using the FLUENT software to probe water flow characteristics after water inrush.Eight common cases of water inrush from the working face and the floor during double-line tunnel excavation are researched.The variation rules of velocity,pressure and water volume fraction in the tunnels after water inrush are analyzed.The optimized escape routine is respectively formulated for the eight water inrush cases.The water movement laws under the conditions of different excavation situations and different water inrush positions are further discussed by comparing the above case studies.(4)The solute transport characteristics and groundwater connection structures of karst water tracing are studied by numerical simulation and field tracer tests.The simulation method of solute transport is first proposed.Then five kinds of representative geological models of karst water tracing are built,and the process of solute transport is simulated in the FLUENT software.The variation characteristics of solute transport under the conditions of straight pipeline,bend,depression,waterfall and branch pipeline are analyzed based on the simulation results.The effects of the pipeline width.flow velocity,size of the bend,depression depth,the number of bends,depressions and waterfalls,and path difference of the branch pipeline on the tracer curve are discussed.General laws of groundwater connection tracer curve are summarized.Finally,according to field test results,the groundwater connection structures are analyzed and speculated in detail by the flow velocity and local monitoring curve.(5)In order to effectively control the water and mud inrush risk and guarantee the safety of tunnel construction,an unascertained measure model of water and mud inrush risk evaluation is established based on the unascertained measure theory.First,according to geological factors and engineering factors in tunnel zone,unfavorable geology,formation lithology,ground water level,topography and geomorphology,attitude of rocks,contact zones between soluble rock and non-soluble rock,crack in rock stratum,surrounding rock grade,construction technology level,and management level are selected as risk evaluation indexes of water and mud inrush,which constitutes the index system of water and mud inrush risk evaluation.Through collecting and collating information of typical water and mud inrush examples of karst tunnels,the uncertainty measure function of each evaluation index is obtained based on the measured data.Meanwhile,the index weight of each factor is ascertained by the entropy-information theory,and the risk grade of water and mud inrush is judged by the credible degree recognition criteria.In engineering application,the water and mud inrush risk of the Qiyueshan karst tunnel is evaluated based on the established unascertained measure model.(本文来源于《山东大学》期刊2018-11-29)

苏航,田逸宁,陈惠迪,沈思旸[2](2016)在《基于物联网技术的模块化多传感器高楼火灾逃生路线规划装置》一文中研究指出本文介绍了一款基于物联网技术的模块化多传感器高楼火灾逃生路线规划装置,能够在火灾发生时通过传感器将火灾中环境数字化以检测各逃生道路中已发生的状况及是否适宜楼内人员从所监测通道逃生,在通过单片机进行数据处理后为逃生人员规划出最佳的逃生路线,并通过配套的主机程序及客户端、服务器两款手机app软件用于直接将自动路线规划结果反馈给逃生人员及用于监测人员进行人工调度。(本文来源于《消防界(电子版)》期刊2016年07期)

程振兴,徐圆,朱群雄[3](2016)在《基于模糊理论的火灾逃生路线算法研究与仿真》一文中研究指出针对传统的逃生寻路算法没有考虑到火灾发生时的动态性和随机性,无法对火灾的发展趋势进行预测,导致选择的路径不能保证安全逃生且效率不高的现状,本文提出了一种基于模糊理论的逃生路线算法。将场景抽象建模并计算每个燃料点火灾发生时间,使用模糊理论对可能燃烧的燃料点计算逃生人员抵达的最短时间,并预测逃生人员到达时燃料点的火势情况;建立几何模型计算火灾蔓延的安全临界边界点集,并由贪心思想选择一个安全的中间逃生点。最后用虚拟现实技术对火灾模型模拟仿真,仿真结果表明,提出的算法能够提供安全且距离更短的高效逃生路径。(本文来源于《北京化工大学学报(自然科学版)》期刊2016年04期)

左维,吕清文[4](2016)在《浅谈第六代超深水钻井船逃生路线的设计》一文中研究指出文章主要从各个功能区域入手结合规范要求对钻井船的逃生路线设计作了个简单的介绍,供大家参考。(本文来源于《科技创新与应用》期刊2016年08期)

帅文斌[5](2015)在《隧道突涌水仿真模拟计算与逃生路线设计研究》一文中研究指出以六盘山隧道A4标段为研究对象,进行了基于FLUENT的隧道突涌水仿真模拟计算,得到了涌水的流通特点,参照模拟计算结论,并结合现场实际,设计了逃生路线,在隧道突涌水应急演练中取得了较好效果,可为制定隧道突涌水应急预案与临灾处理提供依据。(本文来源于《山西建筑》期刊2015年15期)

朱海滨,艾辉,刘志勇,暴运生[6](2015)在《活动式逃生路线牌底座的研制与应用》一文中研究指出逃生路线牌是目前施工现场施工中必用设备。而目前安插逃生路线指示牌底座是固定安放且用锤击易损坏;井场砖渣较多不易放置、砸入,在锤击时用手扶的过程中易伤人,且在送油管或者吊送工具时要多次夯击,这样即浪费了时间,又增大了劳动强度,因此我们把逃生路线牌的固定式底座,设计改为活动式逃生路线牌底座,这在施工中拿取方便起着非常重要的作用。(本文来源于《山东工业技术》期刊2015年08期)

鱼建英[7](2013)在《“山谷中突遇山洪、泥石流灾害时逃生路线的选择”实践活动设计》一文中研究指出【课题提出】在人教版《普通高中课程标准实验教科书自然灾害与防治(地理)》(选修五)中,关于在野外遇到泥石流时,教材讲述的逃生路线是"要向垂直于泥石流前进的方向跑"。又如近年来关于自然灾害考查的一道练习题:读图回答:(本文来源于《地理教学》期刊2013年14期)

邓四林,马鑫[8](2012)在《可精准计算火灾发生时的最短逃生路线》一文中研究指出甘肃省兰州市七里河区西湖街道辖2.65平方公里,包括9个居委会,常住人口近7万人。在这里,有全国首创的“叁维数字”社区管理系统,当地消防部门开动脑筋,“借梯登高”,依托这一平台精心搭建了一张“数码防火网”,为做好消防工作提供了极大便利。 “数码(本文来源于《人民公安报·消防周刊》期刊2012-12-05)

童曙泉,兰洁[9](2011)在《照图优选逃生路线避险收听家中广播》一文中研究指出本报讯 “9号楼303室发生火灾,紧急疏散楼内居民。”看着电子应急疏散避险地图,应急中心指挥人员快速优选疏散路线,通过社区应急广播系统指挥救援人员赶到现场引导居民疏散。同时,安装在居民家中的接收终端响起火灾警报,播放疏散通知。仅用了10多分钟,社区各居民(本文来源于《中国安全生产报》期刊2011-10-22)

朱军备,徐猛挺,吴培维,黄成峰[10](2011)在《奉化易发山洪灾害的44个村 村村有了“逃生路线图”》一文中研究指出昨天下午四时半,来到溪口镇石门村,天色朦胧。村委会办公大楼前的墙上挂着一张《石门村山洪地质灾害转移图》,十分醒目,图上全村地貌、村民住屋一目了然,村道上用箭头标明了村民避灾的线路和避灾点位置。    正在值班的村支书毛信达说,这张图是去年就画好的(本文来源于《宁波日报》期刊2011-08-06)

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逃生路线论文参考文献

[1].吴静.岩溶隧道突水通道扩展机理、最小防突厚度及逃生路线优化研究[D].山东大学.2018

[2].苏航,田逸宁,陈惠迪,沈思旸.基于物联网技术的模块化多传感器高楼火灾逃生路线规划装置[J].消防界(电子版).2016

[3].程振兴,徐圆,朱群雄.基于模糊理论的火灾逃生路线算法研究与仿真[J].北京化工大学学报(自然科学版).2016

[4].左维,吕清文.浅谈第六代超深水钻井船逃生路线的设计[J].科技创新与应用.2016

[5].帅文斌.隧道突涌水仿真模拟计算与逃生路线设计研究[J].山西建筑.2015

[6].朱海滨,艾辉,刘志勇,暴运生.活动式逃生路线牌底座的研制与应用[J].山东工业技术.2015

[7].鱼建英.“山谷中突遇山洪、泥石流灾害时逃生路线的选择”实践活动设计[J].地理教学.2013

[8].邓四林,马鑫.可精准计算火灾发生时的最短逃生路线[N].人民公安报·消防周刊.2012

[9].童曙泉,兰洁.照图优选逃生路线避险收听家中广播[N].中国安全生产报.2011

[10].朱军备,徐猛挺,吴培维,黄成峰.奉化易发山洪灾害的44个村村村有了“逃生路线图”[N].宁波日报.2011

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