AMEX-10-SEAL在输水钢管局部修复中的应用

以上海市区原水引水管渠闸凌支线输水钢管局部修复为例,探讨了国内首次将AMEX-10-SEAL修复技术应用在输水钢管中的情况。分析了AMEX-10-SEAL管道接头修复技术的原理、工艺特点、施工流程和使用效果,工程实践表明,该技术在输水钢管局部修复中具有工艺成熟、施工便捷、工期短、对周边环境影响小等特点。

The Kinetic Energy Budget and Circulation Characteristics of the Tropical Storm Irma during AMEX Phase Ⅱ

By using the data from observation on the Chinese research vessel Xiang Yang Hong No.5 and other sources during AMEX phase II, the kinetic energy budget and circulation characteristics of the tropical storm Irma were analyzed.Irma formed on the ITCZ of the Southern Hemisphere. During the formative stage of the storm, the SE trades and monsoon westerlies on both sides of the ITCZ strengthened, and more importantly, there was a strong divergent flow in upper troposphere. These contributed to the intensification of Irma. At the time when Irma formed, the Richardson number (Ri) in middle and lower troposphere was much smaller than that prior to and post the formation.When Irma intensified rapidly, the area-averaged kinetic energy in the general flow increased in the whole troposphere . The largest contribution came from kinetic energy generation term, -[v.(?)(?)] .indicates that there existed a strong ageostrophic accetration. As to the generation term , the conversion of available potential energy to kinetic energy, - |ωα|, made the largest contribution. This illustrates the importance of internal sources and of the ensemble effect of cumulus convection to the kinetic energy.To the increase of area-averaged eddy kinetic energy during the rapid intensification of Irma, the most impor tant source in the whole troposphere was the dissipation term - [E'], that should be interpreted as the. feeding of eddy kinetic energy from smaller to larger scale disturbances. Another important source was generation term, - [v' (?)(?)'], in the lower troposphere. Rather small contribution came from the energy conversion from the kinetic energy of area-mean flow to eddy kinetic energy. Therefore, the eddy kinetic energy of the developing tropical disturbance extracted both from smaller an, .arger scale motions. The former was much more important than the latter In addition, the disturbance acting as a generator and exporter, generated and exported eddy kinetic energy to the environmental atmosphere.

浅谈AMEX-10-MONO SEAL非开挖修复技术

以长江引水三期DN2400承插管接口检修工程为例,通过将AMEX-10-MONO SEAL修复技术在大口径输水钢管中的应用情况,分析AMEX-10-MONO SEAL管道接口修复技术的原理、施工流程、工艺特点和使用效果。工程实践表明,该技术在输水钢管接口修复中具有施工便捷、工期短、工艺成熟、对周边环境影响小等特点。

国内管道非开挖修复技术AMEX-10-SEAL的最新应用

由于城市给排水和燃气的管道老化，或受到外部环境的影响而造成破坏．使管道系统运行能力降低甚至丧失，并造成管道内污染。管道修复技术由此逐渐发展起来的。与传统的开槽修复和管道更新技术相比较．非开挖管道修复技术具有土方工程量少，对城市交通影响最小、施工迅速可靠，经济合理从而降低了工程成本等优点。近年来，我公司采用HDPE管内衬法等非开挖管道更新技术已被广泛应用于实际工程中。本文介绍的AMEX-10-SEAL修复技术是在欧洲较为成熟的一种非开挖管道修复技术，主要用来修复管道接头及环向裂缝。具有操作简便，安装迅速，水头损失极小，成本低，使用寿命长（达50年）等优点。上海浦东供排水建设工程有限公司承接的昆明“罗家营-五水厂DN1200A钢筋混凝土管道接头修复工程（四甲-中营段）”采用了AMEX-10-SEAL技术修复管道接头。以下将以该工程为例，结合本人的施工经历，着重介绍AMEX-10-SEAL修复技术的工艺特点和工艺流程，希望借此推广这种修复技术。

一种LC_CDMA信道估计方法

在 L C_ CDMA通信系统中 ,由于在多径衰落信道下使用了时变扩频码 ,使得信道估计非常困难 ,而对接收机的设计往往需要信道的先验知识。通过利用 L C_ CDMA的输出进行信道估计 ,建立一个CDMA通信系统数学模型和多径频率选择性衰落信道的 FIR滤波器模型 ,用线性神经网络结构的子空间分解方法获得噪声子空间 ,提取噪声分量的信道估计算法 ,并结合信道估计 ,利用噪声子空间与信号子空间正交的特性 ,求解出频率选择性多径信道的响应系数。构建了一个长码条件下的多用户检测器 ,并仿真分析算法的性能。

Ames试验检测堆肥处理后工业固体废弃物致突变性的变化

利用Ａｍｅｓ试验检测两种工业固体废弃物堆肥样品的致突变性，其方法是对堆肥当天和４０天后采集的样品先后用二氧甲烷和甲醇萃取。萃取物用菌株ＴＡ９８和ＴＡ１００检测。结果表明堆肥处理降低了废弃物的致突变性。废渣Ａ的致突变毒性显著降低，废渣Ｂ原先具有弱致突变性，处理后变成阴性。但废渣Ａ处理后仍保持阳性结果。说明堆肥处理需要更长的时间和某些改进。试验结果同时显示堆肥可以去除废渣Ｂ的抑菌毒性。