桥梁隧道施工常见问题及控制对策探析

近年来,随着桥梁隧道事业的发展,我国交通网络日趋完善。在桥梁隧道工程建设中,桥梁隧道施工相对于其他工程来说更加危险,因此在施工中要考虑到工程的整体施工质量和效率,还要考虑到人员的安全。施工必须结合地形条件,做好防水和防腐处理,确保桥梁隧道工程运行的稳定性和安全性。然而许多工程建设由于技术应用不当、管理问题和材料使用问题,会导致各种问题的发生。基于此,本文分析了桥梁隧道施工中的普遍问题,提出了加强桥梁隧道施工技术和管理控制的相关建议。

权力结构变迁下的城市社区治理问题研究

随着我国现代化建设进程的不断加快,各方面的建设都呈现出由单一性向多元化发展的趋势.城市作为国家的重要组成部分,社区治理的优劣直接影响国家发展的步伐,是首要解决的民生问题.因此,城市社区治理问题也需要紧随时代发展的步伐,不断推进创新城市社区治理体系,确保社会的和谐稳定.与此同时,伴随着城市社区类型从'单位制'向'街居制'的转变,城市社区治理权力结构也在发生巨大的变迁,权力类型更加趋于多元化.在此基础之上,本文将着重围绕权力结构变迁下的城市社区治理问题,进行详细的研究.

Ecological Environment Problems and Countermeasures of Small and Middle-sized Rivers in Shandong Province

Water uses in small and middle-sized rivers, and non-ecological treatment model has deteriorated local environment in Shandong. The research reviewed ecological environment status quo of small and middle rivers and concluded existing problems. Finally, ecological treatments were proposed based on treatments at home and abroad in order to improve eco-environment of rivers and build better Shandong.

Problems and Countermeasures of the Bio-energy Development in China

The current development and utilization status of bio-energy at home and abroad was summarized, and a multi-angle in-depth analysis and reflection was given to the problems encountered in the development of bio-energy. Furthermore, some suggestions were put forward to accelerate the further development of bio-en-ergy industry in China.

Research on Southern Herbs and Li Medical Plants in Hainan

The current situation, development advantages and presenting problems of southern herbs and Li medical plants in Hainan Province were analyzed in this pa-per. ln addition, some ideas and solutions were proposed, providing a reference to government departments and investors.