安全技术培训是提升员工素质的一种主要方法,经过多年的努力,煤矿企业员工素质有了长足进步,但各类煤矿安全事故的发生,仍鲜红地烙印着安全技术培训不到位的情况,因此,采用什么样的培训教育途径和方法已成为如何提高煤矿安全技术培训效果的主要课题,在工作实践中,通过建立完善“六个基地”、推行“六个一批”、采用“十种方法”,有效推动了安全技术培训工作的扎实开展.
In this paper,the beam-wave interaction of a 170 GHz megawatt-level corrugated coaxial-gyrotron operating at TE31,12 mode was studied numerically.Based on the self-consistent nonlinear theory and sing
In this paper,a dielectric loaded grating for Smith-Purcell(SP)device is proposed.The results obtained from two-dimensional particle-in-cell(PIC)simulation show that,comparing with metal grating,the u
Particle swarm optimization(PSO)is used to searching the start oscillation conditions of gyrotron backward wave oscillator(gyro-BWO),the results are more accurate than the original algorithms.
The phase signal is usually distorted when it is unwrapped from raw file.The time delay is related to the phase information.We manage to get perfect phase data by time delay data,and in this paper we
Quantitative measurement based on THz absorption spectrum is of great importance in THz applications.This paper used the newly developed terahertz time-domain spectroscopy(THz-TDS)to detect melamine a
In this paper,the sensing of Para-substitued Anilines in THz region has been reported by using terahertz time-domain spectroscopy(THz-TDS).Several aniline compounds,such as p-chloroaniline,p-toluidine
Changing weather condition,region height and meteorological parameters of atmosphere determines the feasibility of proposed research,technical and commercial applications of THz electromagnetic wave t
页岩的脆性能够显著影响井壁的稳定性，对压裂的效果影响显著。采用RFPA2D_Flow软件系统对脆性对水力裂缝起裂和延伸开展了数值模拟研究。不同脆性条件下的岩石水力压裂裂纹延伸扩展，以及裂纹的形态具有很大的不同，对压裂效果具有显著影响。数值模拟结果表明：脆性指数和残余强度系数成反比，残余强度系数越大，脆性指数越小。脆性指数较大，容易形成多裂纹、分叉裂纹，在一定水平应力差条件下，水力压裂裂纹延伸扩展过
岩石极限拉应变是工程设计和安全评估的重要参数，而目前测试岩石极限拉应变的拉伸试验方法并不成熟.为了完善岩石直接拉伸试验方法，本文采用数值分析方法模拟了不同尺寸、不同高径比、不同粘接剂厚度岩石试件的轴向拉伸试验破坏过程，并获得岩石完整的拉应力～拉应变曲线.计算分析结果表明：岩石轴向拉伸试验试件应采用直径为50mm的圆柱形试件；试件的最优高径比为2：1；应采用粘结式拉伸试验方式，且粘结剂的抗拉强度不低