浯溪水电站厂房岩溶地质基础处理措施

浯溪水电站位于灰岩岩溶强发育地区，岩溶形态为溶沟、溶槽及溶洞，连通性好，部分充填砂砾卵石，结构松散，透水性强，厂房基础条件差。文章简单介绍了浯溪水电站厂房工程岩溶地质情况及处理措施。     

On dynamic output feedback robust MPC for constrained quasi-LPV systems

This paper considers the dynamic output feedback robust model predictive control (MPC) of a quasi-linear parameter varying (quasi-LPV) system with bounded noise. In our previous works, for the unknown true state, either its ellipsoidal bounds or its polyhedral bounds were solely applied in the main optimisation problem. The recursive feasibility of the main optimisation problem was guaranteed by a simple refreshment of the ellipsoidal bound, but might be lost by applying the polyhedral bounds. This paper shows how and to what extent the recursive feasibility can be restored when the polyhedral bounds are still utilised. First, we propose a new approach which, at each sampling time, utilises either the ellipsoidal bound or the polyhedral bound in the main optimisation problem, the latter being used if and only if it is contained in the former. Then, we show the sufficient conditions under which the approaches based on polyhedral bounds preserve the property of recursive feasibility. A numerical example is given to illustrate the effectiveness of the controller.     

浅谈二次回路抗干扰的措施

针对近年来内蒙古达拉特发电厂在二次回路中遇到的典型事例,给出二次回路抗干扰的措施,如采用接地和屏蔽、合理布二次回路电缆、根据要求加装隔离继电器、抑制来自电源的干扰等方法,有效地解决了运行中对微机保护干扰的问题。     

德士古煤气化装置设计问题探讨

本文对国内德士古煤气化装置运行中暴露出的设计问题进行了探讨     

正峰油气藏概述（Ⅰ）

正峰油气藏概念的提出,开启了对油气藏属性与结构的新认识,以及对其勘探开发的一套新观念。正峰油气藏的属性之一就是它的储量是动态的,最终储量大于容积、产量大于可采储量,其结构不是单一的“藏”,而是由“油气藏”、“油气场”、“油气源”组合而成的有机统一体。正峰油气藏结构的优质与否决定了藏续能力,藏续能力是指油气藏继续捕获油气的能力。文章分别简单分析了准噶尔盆地中拐凸起的油气场结构、鄂尔多斯盆地延长油矿的复苏原因和渤海湾盆地东营凹陷所存在的正峰油气藏实例,从我国西、中、东部的实例选择性地说明了我国存在着这种油气藏。     

核电站汽轮发电机组与供汽系统的功率匹配

压水堆核电站汽轮发电机组与核蒸汽供应系统的功率匹配是使燃料棒表面的热负荷小于临界热负荷 ,并留有一定裕度。核电站核蒸汽供应系统的热工设计裕度中有一部分如 4 %可用于增加堆芯热功率和汽轮机出力。压水堆核电机组广泛采用一回路平均温度和二回路蒸汽压力都做适当变化 ,即汽轮机额定蒸汽流量与核蒸汽供应系统额定蒸汽流量相匹配 ,汽轮机最大蒸汽流量与核蒸汽供应系统最大蒸发量相匹配。     

雷达测量数据精度评估方法研究

本文针对靶场多设备组网测试引导需求,提出了基于最小二乘划窗法的测量数据精度评估算法;应用最小二乘方法分析了雷达测量数据系统误差模型和随机误差,并进行了实例验证;本文提出的精度评估算法正确可靠,实时及事后精度分析效果良好,可以对雷达测量数据进行实时及事后精度评估.     

海参花成分分析及对小鼠认知辨别能力的影响

本研究主要对海参花进行了成分分析并研究了其对小鼠认知辨别能力的影响。70只SPF级雄性ICR小鼠按体重随机分为空白组、东莨菪碱模型组、吡拉西坦阳性组(400 mg/kg),海参花低、中、高剂量组(75、150、450 mg/kg)。每天灌胃给药30 min后腹腔注射1 mg/kg东莨菪碱造模。30 d后进行旷场实验、新物体识别实验、Y迷宫、Morris水迷宫、避暗实验等行为学实验。在行为学实验训练期继续灌胃给药并造模。结果表明:与模型组相比,海参花组能显著增加小鼠在旷场中心区域活动的时间(P0.05),在新物体识别实验中能显著提高小鼠的辨别指数(P0.05),在Y迷宫实验中能显著增加自发交替(P0.01),在Morris水迷宫空间探索实验中能显著减少小鼠的逃避潜伏期(P0.01),同时显著增加小鼠在平台所在区域的穿越次数(P0.05)和累计时间(P0.05)。在避暗实验测试期中能显著增加小鼠进入暗室的潜伏期(P0.05)和降低错误次数(P0.05)。     

阿姆河右岸区块碳酸盐岩气藏H2S成因与分布规律

土库曼斯坦阿姆河右岸区块内的气藏天然气中普遍含有H₂S,尤其是西北部气藏H₂S含量相对较高,深入研究其成因和分布规律,才能最大限度地减少和控制由此产生的危害。根据该区地质条件和天然气组分特征,结合H₂S形成机理,分析认为：①天然气中的H₂S主要来源于硫酸盐热化学还原反应。由于西北部卡洛夫-牛津阶碳酸盐岩储层顶部为石灰岩和膏盐岩互层,并直接被膏盐层覆盖,具有发生硫酸盐热化学还原反应的物质条件,故其H₂S含量高;东南部无石灰岩和膏盐岩互层,且有泥岩段将石灰岩储层与上覆膏盐岩层分隔,故其H₂S含量低。②H₂S含量的高低整体上受沉积相带的控制。在深水高伽马泥岩分布区及开阔台地深水沉积区,H₂S含量普遍较低;而在无高伽马泥岩分布区H₂S含量普遍较高。③东南部较大的逆断裂破坏了高伽马泥岩层的封隔性,使H₂S分布规律更复杂化。     

On service provisioning using light-trails in WDM optical networks with waveband switching

As the number of wavelengths in a single optical fiber increases, so does the number of ports needed for wavelength switching in optical cross-connects (OXCs), which may significantly increase the cost and difficulty associated with controlling large OXCs. Waveband switching (WBS) treats several wavelengths as a bundle that is switched through a single port if they share the same switch route, so that the number of ports needed can be reduced. On the other hand, light-trails in wavelength division multiplexing (WDM) optical networks allow intermediate nodes on established optical paths to access the data paths whereas light-paths only allow two end nodes to access the data paths. Therefore, light-trails offer significantly better flexibility for service provisioning and traffic grooming. In this article, we study service provisioning using light-trails in WDM optical networks with the WBS capability under a static traffic model. For comparison, integer linear programs are formulated for establishing light-trails with and without WBS. Numerical studies show that in certain cases, service provisioning with WBS in light-trail networks can reduce the number of ports needed while providing a more flexible sub-wavelength service provisioning capability. However, contrary to intuition, in most cases applying the WBS technique requires more ports in OXCs in light-trail networks. This study provides insights into the network design problem that applies the WBS technology to light-trail based optical networks.