TSP203在高速铁路岩溶隧道中的应用

在分析TSP测量原理的基础上,以沪昆客专长昆段湖南境内的分水坳隧道为工程实例,对其展开了岩溶的预测预报,通过现场采集数据,经过数据处理,对图像进行分析,从而成功对分水坳隧道DK422+632~DK422+732里程段进行了岩溶探测。     

化学气相沉积镀膜机控制研究

以RF-500型镀膜机为例介绍了化学气相沉积（CVD）镀膜机的结构以及工作原理;为克服RF-500型CVD镀膜机传统的电气控制缺点,开发了一套基于工业控制计算机的控制系统。描述了该镀膜机控制系统的硬件结构和软件功能。对基片温度、气体流量及开关量的控制效果进行了大量的实验研究。结果表明：基片温度控制精度达到±1℃、工作（反应）气体的流量控制精度达到10mL/min,可以进行精确的开关量控制。应用表明：该控制系统可以实时监控RF-500型CVD镀膜机的运行。     

广珠城际前山车站特大桥深基坑钢板桩围堰设计与施工

结合广珠城际轨道交通工程ZH-3标前山车站特大桥承台基坑钢板桩围堰的设计与施工方法,旨在分析总结在城市道路中央进行深基坑施工的设计方法以及施工技术,给同类工程提供经验.     

崇启大桥50m箱梁冬季超早强高性能混凝土配制技术

结合崇启长江公路大桥江苏段施工特点,介绍了箱梁湿接缝施工工艺。详细讲述了混凝土配合比技术要求、配制思路及措施、配制技术难点,工程技术措施、主要原材料及配合比选定等。对混凝土配合比水化热、耐久性、冬季湿接缝C55混凝土配合比力学性能进行试验检测,结果满足规范要求,并有效缩短工期,节省施工成本,工程质量得到保证。     

隧道爆破开挖数值分析研究

山岭隧道施工的常用方法是钻爆法,其关键技术是光面爆破。本文采用AUTODYN数值计算软件,对隧道IV级围岩全断面爆破开挖时的压应力场、爆破振动速度场进行了数值分析计算,根据数值分析计算结果,得出了相应的优化爆破设计的结论,从而达到隧道后期安全快速施工的目的,并为类似隧道工程爆破施工提供了较好的借鉴。     

后张法预应力空心板张拉裂缝试验分析

对后张法预应力空心板张拉过程中端部加强区纵向裂缝问题进行了对比试验 ,分析了裂缝产生的原因 ,提出了施工建议。     

Non-thermal pasteurization of milk by an innovative energy-saving moderate electrical field equipped with elongated electrodes and process optimization

Environmental concerns and consumer demand necessitate alternative pasteurization techniques that sustainably produce safe and high-quality milk. To this end, a new non-thermal (<42 °C) moderate electric field (MEF) system was developed with elongated electrodes and a reduced electrode gap. Response surface methodology optimized technical and thermo-physical attributes, including viscosity, density, freezing point, solid non-fat (SNF), temperature, power usage, and specific energy consumption (SEC), by altering electrical field intensities (EFI) and mass flow rates (ṁ) from 25 to 30 V/cm and from 0.017 to 0.033 kg/s, respectively. The results were then compared with the conventional thermal pasteurization (CP, 63 °C for 30 min). Besides, process cost analysis in terms of electricity consumption was performed to identify cost reduction opportunity for the industry, and milk samples were analyzed by scanning electron microscopy to elaborate on the mechanisms involved. MEF optimal processing conditions were 29.8 V/cm EFI and 0.018 kg/s ṁ, which reduced 98.58% of energy consumption, 98.51% of SEC, and 99.09% of processing time in comparison with CP. Also, MEF possessed higher productivity than CP. D-value for total count bacteria (TCB) in MEF was significantly lower than CP (0.06 vs. 14.80 min), and MEF and CP reduced TCB by 99% and 88.61%, respectively. Compared with the previously reported MEF milk pasteurizer, the MEF system developed in this study saved energy, cost, and time by 99.2%, 99.0%, and 78.4%; therefore, this emerging technology could further contribute to sustainable manufacturing of foods.