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Introduction

Bimonthly, started in 1957
Administrator
Shanxi Provincial Education Department
Sponsor
Taiyuan University of Technology
Publisher
Ed. Office of Journal of TYUT
Editor-in-Chief
SUN Hongbin
ISSN: 1007-9432
CN: 14-1220/N

Links

Shanxi Provincial Education Department

Taiyuan University of Technology

location： home> 2020,51(02)

Study on the Rarity of Coking Coal Based on Correlation Analysis

Coking coal resources are very scarce, but the factors causing its scarcity are unclear. The contingency table analysis method was used to study the correlation between coking coals and coal-forming plants, coal-forming age, sedimentary environment, metamorphic power and geothermal gradient. The results show that, coking coal only exists in the partial coal-forming period of coal gathering period in China; the gel-forming material in coal-forming plants is a necessary condition for coal formation...

Taiyuan University of technology 2020,51(02): WU Yucheng, JIN Zhixin, BAO Yanke, DENG Cunbao, HAO Chaoyu, WANG Xuefeng, CHEN Xi, LI Yucheng. ;

PDFviewed：abstract

Pose Measurement of Detection Robot in Hydraulic Supports Based on the Motion Process Restoration Me

The pose, straightness and working state of hydraulic supports are important indexes for engineering quality evaluation of fully-mechanized mining face and the key to ensure the continuous advancement of unmanned working face. The motion process restoration method describing the pose of the hydraulic support with 6 degrees of freedom(DOF), 3 position DOF(u, v, w) and 3 orientation DOF(θ, φ, ψ), was proposed. Based on this method, a model for measuring the pose and straightness of the hydraulic...

Taiyuan University of technology 2020,51(02): YANG Xuejun, WANG Ranfeng, WANG Huaifa, LI Weiguo. ;

PDFviewed：abstract

Back Analysis of Soil Parameters of Metro Shield Site Based on PSO-BP Neural Network

The difference between soil parameter assignment and actual engineering is one of the main reasons that numerical calculation results are inconsistent with actual project. Aiming at the shortcomings of BP neural network in parameter inversion, on the basis of the measured surface settlement data of Taiyuan metro, this paper constructed PSO-BP neural network by using MATLAB neural network toolbox combined with orthogonal method and numerical simulation technology, and inverted soil parameters and ...

Taiyuan University of technology 2020,51(02): GUO Ziqi, YANG Shuangsuo, LI Yanbin, YANG Huanhuan, PANG Xing, LUO Baisheng. ;

PDFviewed：abstract

Analysis of Influence of Interlayer Rock Thickness on Ascending Mining Coal Seam

The mining of the lower group of coal directly affects the upper coal and its top and bottom, and the thickness of the interlayer rock and its fall characteristics are the key to whether it can be used for ascending mining. Based on the interlayer rock between the No.4 coal seam and the 42 mining coal seam of Lvliang mine, according to the variation of interlayer rock thickness, theoretical analysis, numerical simulation and field measurement were used to study the influence of different thicknes...

Taiyuan University of technology 2020,51(02): WANG Qinglong, YANG Yongkang, ZHANG Zhimin, ZHANG Huijun, HE Hongwei. ;

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Numerical Simulation of Gas Control by Using Low-level High Extraction Roadway in Fully Mechanized C

In order to effectively solve the problem of gas overrun in some areas of fully mechanized caving face with large mining height, numerical simulation method was used in this study to compare and analyze gas flow law and gas concentration distribution law along the vertical height, strike depth and dip length of the stope in different layers of high extraction roadway. On the basis of upper corner gas concentration and extraction concentration, gas concentration and extraction volume were investig...

Taiyuan University of technology 2020,51(02): ZHANG Lina, LIU Xianxin, SONG Bo, LI Zetian, WANG Mingyuan. ;

PDFviewed：abstract

PET Image Reconstruction Using Dilated U-Net

In order to improve PET image quality, a Dilated U-Net(D-Unet) based PET image reconstruction method was proposed. First, to better enhance the contextual semantic information and extract deeper image features without increasing the number of parameters, we designed the residual density blocks nested with dilations(RnD Blocks) to process the PET image with high noise and striatal artifacts. In addition, the end-to-end PET image reconstruction network was constructed by combining the perception lo...

Taiyuan University of technology 2020,51(02): DU Qianqian, QIANG Yan, LI Shuo, YANG Xiaotang. ;

PDFviewed：abstract

Discriminant Research on Screw Locking Results Based on Two-stage Random Forest

The judgment of screw locking results is the key point of intelligent screw locking machine. In order to better distinguish the results of screw locking, aimed at the characteristics of unequal length and category imbalance of screw locking data, and the problem of misjudgment of similar categories, a discrimination model was established for the screw locking data in two-stages based on random forest. In the first stage, the characteristics are constructed according to the physical characteristic...

Taiyuan University of technology 2020,51(02): DENG Yu, LI Ming, ZHOU Daoxiang. ;

PDFviewed：abstract

Design of Bridge Strain Acquisition System and Study of Temperature Effect

Addressed in this paper are the issues of low measuring accuracy, single point measurement and complicated connection of strain gauge about data acquisition used in engineering. By utilization of FPGA technology, an acquisition system of bridge strain based on vibrating wire extensometer was designed, which can simultaneously collect 8-channel strain data, and the frequency measurement method was optimized. Meanwhile, on the basis of the field monitoring of Jinmeng Yellow River Bridge in Shanxi P...

Taiyuan University of technology 2020,51(02): WANG Yu, LI Yanping, ZHANG Bo, LYU Licheng, SONG Xiangrong. ;

PDFviewed：abstract

Comparative Study of Transmission Line Component Detection Models Based on UAV Front End and SSD Alg

Owing to its complex model structure and the need for computing power, the deep learning-based object detection technology can not be used in UAV transmission line inspection to achieve efficient and accurate detection on the airborne front end. In response to this problem, Single Shot MultiBox Detector(SSD) object detection algorithm was adopted for the three types of component, that is, insulators, suspension clamps and anti-vibration hammers, in the front-end inspection of UAVs, and compares p...

Taiyuan University of technology 2020,51(02): YANG Gang, SUN Changwen, WANG Dawei, JIN Tao, XU Chengyu, LU Zhibo, ZHANG Xingzhong. ;

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Semantic Retrieval Model Based on Tourism Domain Ontology

Traditional keyword search method lacks the semantic processing of search content, and the search results may appear incomplete and inaccurate, unable to meet users requirements. In order to improve the quality of retrieval, on the basis of the construction of tourism domain ontology, the retrieval module was used to analyze the search conditions selected in the process of retrieval preprocessing at semantic level, and the semantic similarity calculation method was used to expand the semantic ana...

Taiyuan University of technology 2020,51(02): ZHANG Ting, DUAN Yuexing, ZHANG Yueqin. ;

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Study on Noise Reduction Performance of Bionic Blades of Mining Contra-rotating Local Fan

When the local fan is working, there is a strong aerodynamic noise due to the high speed rotation of the blade. In order to study the influence of bionic blade on the aerodynamic performance and noise of fan, by reference to the noise reduction performance of the trailing edge saw-tooth shape and the leading edge non-smooth shape of owl wing, the bionic structure design of the blade was conducted for a mine-used rotary local fan. A comparative study was made on the bionic structure of three kinds...

Taiyuan University of technology 2020,51(02): CHEN Qingguang, LI Xiaokai. ;

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Database System Construction and Process Template Design of Barrel Finishing Technology for User App

The large-scale application of barrel finishing technology in high-end equipment and parts manufacturing enterprises has effectively solved the problem of surface quality and surface integrity of parts. Under the constantly changing circumstance of enterprise manufacturing parts material, structure, shape, size and processing requirements, the use of distributed multi-category and multi-model barrel finishing equipment and the implementation of barrel finishing technology by field operators are e...

Taiyuan University of technology 2020,51(02): GAO Wei, YANG Shengqiang, TIAN Jianyan, LI Wenhui, GAO Yunsong. ;

PDFviewed：abstract

Influence of Shape Control Process on Contact Stress and Wear of Roll

The six-high UCM cold rolling mill currently adopts working roll shift, intermediate roll shift and bending processes to improve the quality of plate-shape. But the process adopted to control the plate shape also can influence the contact stress distribution between the rolls and wear of rolls, which may further affect the ability of shape control of mill. In this paper, the 1/2 finite element model of roll system of six-high UCM cold rolling mill was established and the contact stress under diff...

Taiyuan University of technology 2020,51(02): WU Qiong, QIN Xiaofeng. ;

PDFviewed：abstract

Effect of Y on Microstructure and Mechanical Properties of Mg-5Si Alloy

In order to meet the needs of heat-resistant magnesium alloy applications, Mg-5 Si base alloys were used as a research object and Mg-5 Si-Y alloys were prepared by permanent mold casting method. The microstructure and composition of the alloys were analyzed by scanning electron microscopy, energy dispersive spectroscopy, optical microscopy and ICP spectrometry. The yield strength, tensile strength, elongation and hardness of the alloys were tested on cupping machine and Vickers hardness tester. T...

Taiyuan University of technology 2020,51(02): FAN Jinping, WANG Hao, WU Gailin, JIANG Yifeng, WANG Hao, LI Shangming. ;

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Synthesis and Photocatalytic Activity of Bi2MoO6/g-C3N4Z-Scheme Heterojunction

In this study, Bi2MoO6/g-C3N4 Z-scheme heterojunction photocatalyst was prepared and characterized by XRD and ultraviolet-visible diffuse reflectance spectroscopy. The crystal structure and light absorption properties of the catalyst were tested. The results show that by doping Bi2MoO6 to form heterojunction, the band gap of g-C3N4 was narrowed and the photocatalytic activity was enhanced. By taking Rhodamine B(RhB) as the target pollutant, the effects of pH on photocatalytic degradation of RhB o...

Taiyuan University of technology 2020,51(02): MENG Yachu, LI Yuzhen, ZHANG Aiming, SHI Jianhui, LI Zhen, WANG Xiaojin. ;

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The Preparation of Ni2S Nano-hollow Particles by Self-template to Remove Lead Ion in Wastewater

The self-template method was used to synthesize nickel sulfide hollow nanoparticles for selective removal of lead ions in wastewater. Experimental results show that Ni2S hollow nanoparticles have good adsorption effect on lead ions in wastewater, and the adsorption capacity is as high as 695.47 mg/g, which can rapidly reduce the concentration of lead ions from 10 mg/L to trace level of 3 μg/L in 10 minutes. The adsorption kinetics is in agreement with the pseudo-second-order model, indicating th...

Taiyuan University of technology 2020,51(02): DU Juan, LI Dali, WANG Zhongde. ;

PDFviewed：abstract

Gas Transport Characteristics of Natural Rubber/Carbon Nanotube Mixed Matrix Membranes

In order to improve the performance of CO2 separation membrane, multi-walled carbon nanotubes(MWCNTs) were added into natural rubber(NR) to prepare NR/MWCNTs mixed matrix membranes(MMMs). The effect of MWCNTs content on the mechanical properties of mixed matrix membranes was investigated. The effects of MWCNTs content, pressure and thermal cross-linking time on the separation performance of NR/MWCNTs MMMs and the anti-aging properties of the membranes were investigated. The CO2 transport mechanis...

Taiyuan University of technology 2020,51(02): LI Long, WANG Yonghong, WANG Juanjuan, ZHANG Xinru, LIU Chengcen, GAO Honghua. ;

PDFviewed：abstract

Study on the Law of Bottom Pressure During the Compacting Process of Loessial Silt

The law of pressure transfer in soil during compaction reflects the effect of compaction energy. Through a series of laboratory compaction tests in door, the curves of soil bottom pressure changing with compaction time, compaction energy, number of soil layers and water content were obtained by using the independently developed soil bottom pressure testing system, so as to reveal the law of development of soil bottom pressure under different compaction conditions. The results show that the change...

Taiyuan University of technology 2020,51(02): LI Jie, MA Fuli, BAI Xiaohong. ;

PDFviewed：abstract

Static Load Test Study and Bearing Capacity Evaluation of Pedestrian Bridge—Arch-beam Composite Stee

By taking a predestrian bridge(steel bridge) built by the combination of arch-beam in Binhe West Road, Taiyuan as an example, in order to ensure the safe operation of the bridge, the static load test and bearing capacity evaluation were carried out to determine its actual working state.The finite element simulation calculation was carried out by using MIDAS software. The static load test scheme was determined: the loading method of the concrete test block and the square wood support method on the...

Taiyuan University of technology 2020,51(02): WU Zhian. ;

PDFviewed：abstract

Numerical Simulation on the Temperature and Moisture Fields of Shallow Soil in Solar Greenhouse

To investigate the temperature and moisture fields of shallow soil in solar greenhouse, a mathmatical model was built up and used to simulate the dynamic temperature and moisture of shallow soil in solar greenhouse. The results show that the soil temperature and moisture changes at different depths had the same trend, showing periodic changes with time; with the increase of soil depth, the amplitude of temperature and moisture wave decreases gradually, and the delay degree increased gradually; 50...

Taiyuan University of technology 2020,51(02): ZHANG Yan, DU Zhenyu. ;

PDFviewed：abstract