中国安全科学学报最新文献_第10页

Study on performance of gas-liquid extinguishing agent for lithium iron phosphate battery modules 磷酸铁锂电池组件气液灭火剂性能研究

中国安全科学学报 Pub Date : 2020-03-28 DOI: 10.16265/J.CNKI.ISSN1003-3033.2020.03.009

H. Qiang, Tao Fengbo, Liu Yang, Sun Lei, Niu Zhiyuan, Jin Yang

引用次数: 0

Dynamic vehicle speed control model of edge rate in long tunnel sections 隧道长断面边率车辆动态速度控制模型

中国安全科学学报 Pub Date : 2020-03-28 DOI: 10.16265/J.CNKI.ISSN1003-3033.2020.03.019

Z. Can, Wang Hong, LU Hua, Zhu Shunying, Xiao Wenbin

{"title":"Dynamic vehicle speed control model of edge rate in long tunnel sections","authors":"Z. Can, Wang Hong, LU Hua, Zhu Shunying, Xiao Wenbin","doi":"10.16265/J.CNKI.ISSN1003-3033.2020.03.019","DOIUrl":"https://doi.org/10.16265/J.CNKI.ISSN1003-3033.2020.03.019","url":null,"abstract":"Currentlyꎬ when static edge rate is used for vehicle speed controlꎬ cycle length of edge rate period and total length of pavement corresponding to all vehicle speeds are fixedꎬ so it is not well ̄targeted and achieves no obvious effects in speed reduction. In order to make up for this defectꎬ a dynamic speed control edge rate model for tunnel segment was established with minimum vehicle speed dispersion as objective function based on the positive correlation between accident rate and vehicle speed dispersion. Thenꎬ speed control system of dynamic edge rate was installed in central section of long tunnel on expressways for intelligent linkage studies between dynamic edge rate and traffic flow. Finallyꎬ vehicle speeds with or without control system of dynamic edge rate were compared and analyzed. The results show that speed control system based on dynamic edge rate model for tunnel sections can effectively control it with overspeed ratio decreasing by 16􀆰 69%ꎬ 85 percentile speedꎬ average speed and speed standard deviation decrease by 6􀆰 67%ꎬ 7􀆰 96% and 13􀆰 45% respectivelyꎬ and its control effect is more remarkable than that of static edge rate.","PeriodicalId":9976,"journal":{"name":"中国安全科学学报","volume":"1 1","pages":"122"},"PeriodicalIF":0.0,"publicationDate":"2020-03-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82934559","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Immersion acoustic positioning method of corrosion for large tank bottom plate 大型罐底板腐蚀的浸没声定位方法

中国安全科学学报 Pub Date : 2020-03-28 DOI: 10.16265/J.CNKI.ISSN1003-3033.2020.03.006

Zhang Ying, Zhang Xiao, Zhu Zidong, Dang Na, C. Xiaolong

引用次数: 0

Measurement of stress-relief zone width of roadway by borehole gas continuous flow method 用钻孔瓦斯连续流法测量巷道应力消除带宽度

中国安全科学学报 Pub Date : 2020-03-28 DOI: 10.16265/J.CNKI.ISSN1003-3033.2020.03.013

Tian Shixiang, MA Ruishuai, Zou Yihuai, Xu Shiqing, Li Huaying, Yu Zhaoyang

引用次数: 0

A PCA-LSTM neural network-integrated method for phreatic line prediction 一种PCA-LSTM神经网络集成的潜水线预测方法

中国安全科学学报 Pub Date : 2020-03-28 DOI: 10.16265/J.CNKI.ISSN1003-3033.2020.03.015

Dai Jianfei, Yang Peng, Z. Liyi, Guo Pan, Guan Huaiguang

{"title":"A PCA-LSTM neural network-integrated method for phreatic line prediction","authors":"Dai Jianfei, Yang Peng, Z. Liyi, Guo Pan, Guan Huaiguang","doi":"10.16265/J.CNKI.ISSN1003-3033.2020.03.015","DOIUrl":"https://doi.org/10.16265/J.CNKI.ISSN1003-3033.2020.03.015","url":null,"abstract":"In order to prevent dam ̄breaking accidents of tailings pondsꎬ to excavate effective information of online monitoring system and improve prediction accuracy of phreatic linesꎬ a prediction model was set up based on PCA and LSTM neural network. Thenꎬ with Chenkeng tailings pond as an exampleꎬ Pearson correlation coefficient and variable combination method were introduced to determine 18 features of model inputsꎬ including location of phreatic line of measuring point in the first three daysꎬ location of two adjacent surrounding saturation linesꎬ water level of pondsꎬ longitudinal displacement of dam body and rainfall. Finallyꎬ PCA was used to eliminate data redundancy between input variablesꎬ and LSTM neural 第 3 期戴健非等: 集成 PCA 和 LSTM 神经网络的浸润线预测方法 network was applied to predict location of phreatic line for the next three days. The results show that PCA ̄ LSTM neural network ̄based method presents higher predication accuracy with an average absolute error of 0􀆰 011 and a decision coefficient of 0􀆰 805. And it can achieve stable prediction of phreatic lines for tailings ponds under different rainfall conditions.","PeriodicalId":9976,"journal":{"name":"中国安全科学学报","volume":"72 1","pages":"94"},"PeriodicalIF":0.0,"publicationDate":"2020-03-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81202011","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

Effect of cooling vest on heat and humidity transfer of stab-resistant body armor 冷却背心对防弹衣热湿传递的影响

中国安全科学学报 Pub Date : 2020-03-28 DOI: 10.16265/J.CNKI.ISSN1003-3033.2020.03.027

Li Nan, Chang Suqin, Guo Zerong, HE Jingjie, Y. Mengqi

{"title":"Effect of cooling vest on heat and humidity transfer of stab-resistant body armor","authors":"Li Nan, Chang Suqin, Guo Zerong, HE Jingjie, Y. Mengqi","doi":"10.16265/J.CNKI.ISSN1003-3033.2020.03.027","DOIUrl":"https://doi.org/10.16265/J.CNKI.ISSN1003-3033.2020.03.027","url":null,"abstract":"In order to quantitatively study the heat and moisture transfer performance of SRBA and improve the thermal comfort of SRBAꎬ a thermal manikin was used to measure and analyze thermal insulation and evaporative resistance of cooling vestꎬ SRBA and both stacks at different temperatures (25ꎬ 30ꎬ 40 °C) and humidity (40%ꎬ 55%ꎬ 70%). It is found that the thermal insulation changes at the three temperatures measured as SRBA> both stacks > cooling vestꎬ and the evaporative resistance follows this characteristic above 30 °Cꎬ that the higher the temperature isꎬ the greater the effect of the cooling vest on the heat transfer efficiency of the SRBA will beꎬ and that the thermal insulation can be reduced by up to 46􀆰 75% and the evaporative resistance can be reduced up to 82􀆰 97%. The results show that at higher ambient temperature ( > 30 °C)ꎬ the cooling vest can effectively reduce the thermal insulation and evaporative resistance of the SRBA and improve the heat and moisture transfer efficiencyꎬ and that the influence of the cooling vest on the heat and moisture transfer of the SRBA changes with the ambient temperatureꎬ humidity and design characteristics.","PeriodicalId":9976,"journal":{"name":"中国安全科学学报","volume":"46 1","pages":"178"},"PeriodicalIF":0.0,"publicationDate":"2020-03-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84125566","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Effect of SDBS of different mass fractions on coal's wettability by molecular simulation 不同质量分数的SDBS对煤润湿性的影响

中国安全科学学报 Pub Date : 2020-03-28 DOI: 10.16265/J.CNKI.ISSN1003-3033.2020.03.004

Li Shugang, Guo Doudou, Baixue Yang, Yan Min, Lin Haifei, Shi Yu

{"title":"Effect of SDBS of different mass fractions on coal's wettability by molecular simulation","authors":"Li Shugang, Guo Doudou, Baixue Yang, Yan Min, Lin Haifei, Shi Yu","doi":"10.16265/J.CNKI.ISSN1003-3033.2020.03.004","DOIUrl":"https://doi.org/10.16265/J.CNKI.ISSN1003-3033.2020.03.004","url":null,"abstract":"In order to study effects of surfactant on coal ' s wettabilityꎬ with SDBS taken as research objectꎬ Wiser coal chemical structure model and Material Studio molecular simulation software were used to establish a system where SDBS of six different mass fractions coexisted with water and coal. Thenꎬ the system' s adsorption configurationꎬ energy changesꎬ relative concentration distribution as well as mean square displacement (MSD) of water molecules were analyzed. The results show that hydrophobic alkyl chains of SDBS molecules are adsorbed on coal surfaceꎬ and hydrophilic group with benzene ring warps to water phaseꎬ which reduces liquid ̄solid interfacial tension of water and coal. As mass fraction of SDBS 中国安全科学学报 China Safety Science Journal 第30卷 2020年 increasesꎬ the system's total energy decreasesꎬ but interaction energy between SDBS and coal increasesꎬ indicating that adsorption between molecules is more stable and wettability is enhanced. Spatial distribution difference of hydrophobic alkyl chains of SDBS molecules is one of the main factors affecting wettability. Diffusion coefficient of water molecules increases along with the growth of SDBS mass fractionꎬ which has a significant effect on wettability of coal.","PeriodicalId":9976,"journal":{"name":"中国安全科学学报","volume":"17 1","pages":"21"},"PeriodicalIF":0.0,"publicationDate":"2020-03-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81632466","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 4

Health risk assessment caused by productive dust in coal-fired power plants 燃煤电厂生产粉尘的健康风险评价

中国安全科学学报 Pub Date : 2020-02-28 DOI: 10.16265/J.CNKI.ISSN1003-3033.2020.02.024

XU Surui

引用次数: 1

Risk analysis of gas storage separator based on RBI technology 基于RBI技术的储气分离器风险分析

中国安全科学学报 Pub Date : 2020-02-28 DOI: 10.16265/J.CNKI.ISSN1003-3033.2020.02.004

Wang Jinjiang, Wang Shuhui, Z. Xing, Zhang Laibin

引用次数: 0

Helmet-wearing detection considering human joint 考虑人体关节的头盔检测

中国安全科学学报 Pub Date : 2020-02-28 DOI: 10.16265/J.CNKI.ISSN1003-3033.2020.02.028

Zhang Bo, Song Yuanbin, Xiong Ruoxin, Z. Shichao

引用次数: 4