高速公路噪声防治措施分析

论述了高速公路噪声防治工作目标和实施原则,分析了高速公路现有噪声防治措施的特点和适用条件,提出了噪声防治措施方案比选方法,在高速公路的规划、设计中得到了较好的应用。     

53例下肢静脉血栓超声临床诊断价值

目的：探讨下肢静脉血栓超声征象特点。方法：回顾性分析超声诊断下肢静脉血栓53例。结果：急性21例,亚急性和慢性共32例;完全栓塞18例,不完全栓塞35例;肌肉内静脉1例、浅静脉血栓9例、深静脉血栓43例;左侧39例、右侧10例、双侧4例;或有低、中等回声团,或有点状、束状血流信号。结论：超声运用二维与彩色多普勒血流信号检测,配合乏氏试验等方法,诊断效用高。     

高速公路声环境保护措施的方案比选研究

分析了高速公路建设对环境产生噪声污染的噪声源及其危害性,着重研究了高速公路交通噪声污染的防治对策与措施,并对以上声环境保护措施进行了比选研究,以便合理选择声环境保护措施,减少噪声危害。     

大型工程项目管理理论方法研究

阐述了大型工程项目管理的基本概念与特点,并从项目质量、成本与进度以及风险管理三个方面对项目管理的理论与方法进行了探讨研究,以实现项目的经济效益、社会效益最大化。     

浅析山区公路噪声防治措施

通过对公路及其噪声现状,山区公路特点以及公路噪声一般防治措施的分析,提出了山区公路噪声防治措施,通过这些措施的实施,从而将山区公路对生态环境的破坏降低到最小程度。     

江苏高速公路声环境监测与保护对策研究

从江苏高速公路声环境现状入手,以省内几条主要高速公路为研究对象,研究了几处声环境敏感点的监测方法,探讨了相应声环境敏感点的保护对策,并提出了江苏高速公路声环境的防治措施,以实现公路建设和环境保护的协调发展。     

Application of Improved Comprehensive Water Quality Marking Index Method in Water Quality Evaluation of Pearl River EstuaryEI北大核心CSCD

To study the characteristics of water quality variation in the Pearl River Estuary during the recent years, the water quality in the Pearl River Estuary is evaluated and the tempo-spatial distribution characteristics of water quality is analyzed, based on data from 51 monthly collected water quality sampling points from 2018 to 2020, with evaluation indices filtered using principal factor analysis and improvement on traditional comprehensive water quality identification index method using combinatorial integration method.Results show that the comprehensive water quality identification index method combined with combinatorial integration method takes both excessive pollutants index and other indices into account, so as to obtain reasonable and reliable results, which means the method is suitable for large-scale watershed water quality assessment. The water qualities in all drainages tend to improve over the years, mainly from class of inferior Ⅴ to Ⅲ, which met the water quality goals in water environment function zones. The water quality in the western regions was slightly worse than that in the eastern regions.The river water quality in the Nanshan district was better than that in the Dakonggang district, however the improvement in river water quality in Dakonggang and Qianhai district was more significant. The water quality of the upstream was generally better than that of the downstream. Estuary water quality fluctuates greatly with the seasons, which was generally affected by sea water pollution and the tidal sluice operations. © 2022, Editorial Board of Water Resources Protection. All rights reserved.     

台阶式蓄水沟在坡面治理中的应用

坡地水土保持造林整地工程蓄水沟,过去均采用梯形断面,这在土质比较好的地方是切实可行的,但在成土母质裸露、土壤理化性能差、植物立地条件恶劣的地方效果却不尽人意。据黑龙江省林口县六合小流域过去的经验,栽种在梯形蓄水沟沟埂上的苗木成活率只有57%。造成成活率低的原因主