工业VOC_S精细化环境管理的对策研究

近年来,我国雾霾的严重性已达到不可忽视的地步。因此,有关挥发性有机化合物(VOC_S)的控制和治理已成为我国大气环境治理领域的主流问题之一。介于我国工业VOC_S管理起步比较晚,各方面管理都不成熟,有关VOC_S的定义也一直比较模糊。本文将以国外发达国家有关VOC_S环境管理经验加以借鉴,并对我国VOC_S环境管理问题作出分析后,提出一些有效的建议。

城市精细化管理水平时空差异及影响因素识别

文章利用层次分析法与面板回归模型分析2009—2018年中国主要大城市精细化管理水平的时空差异及其影响因素。结果显示:全国精细化管理水平呈波浪式上升态势;东部地区城市精细化管理水平最高,中部、西部和东北地区三大板块均低于全国均值,中部地区长时间处于全国最低水平;四大板块的城市精细化管理水平与各自影响因素呈现不同关联性,据此提出提高不同区域城市精细化管理水平的思路。

Key technologies of precision demolition blasting of ultra-long urban viaduct in complicated surroundings

The key technologies of precision blasting were put forward based on the characteristics of urban via- duct blasting demolition in complicated surroundings. Initial bending instability mechanics model of reinforcing steel bar frame of blasting fragmented pier and sequenced collapsed dynamic model were established for quanti- tative blasting design. Technologies of water pressure blasting were applied in multi-cell box girder fragmenta- tion. The detonating network of non-electric duplication crossover was adopted for the safety and reliability of ultra-long delay. The rationality of blasting scheme and parameters were validated by physical model test. Harm- ful effects were forecasted and controlled by integrated protective technologies. Specialization, cooperation, pre- cision, execution （SCPE） project management method was put forward for precision management. The key tech- nologies of precision demolition blasting can provide reference for similar proiects.