It was analyzed in detail how the working efficiency of ventilating-dusting system attached to the returned sand cooler influenced the moulding sand quality and castings quality, and the improving measures were also proposed.
简单介绍了K·W气流预紧实高压造型线及其通风除尘设施,详细分析了双盘冷却器通风除尘系统工作效率对型砂质量和铸件质量的影响,指出了现用通风除尘系统存在的问题,同时给出了改进措施。
Research purposes: Based on the characteristics of primary bracing stress and its deformation during the excavation of tunnel,the researches are done on the bracing rationality for sand loess tunnel and the rational bracing measures are presented for the purpose of overcoming the problem in construction of large sectional sand loess Hanguguan Tunnel.
研究目的:针对郑西客专函谷关大断面砂质黄土隧道,隧道开挖过程中初期支护受力及变形特点,进行砂质黄土隧道支护合理性的研究,提出有效的支护措施。
Based on the analysis of the measured results,the basic methods of supervisory measurements on tunnel construction under the complex conditions that surrounding rocks are mainly sandy clay are introduced;and the basic deformation regularity of similar tunnel and ground are also summarized.
01标段57#～61#隧洞施工监控量测结果的分析,介绍了复杂环境条件下围岩为砂质粘土隧洞施工监控量测的基本方法,总结出该类隧洞及地面变形的基本规律,对今后类似工程的施工监测提供重要的参考价值。
With engineering practice,the article analyzes reasons of ground settlement when shield driving is conducted through sandy silt stratum; and it also sums up the secured measures.
文章结合施工实例,对盾构在②-3层砂质粉土中推进引起地面沉降的原因进行分析,同时对所采取的措施进行了总结。
An introduction is given to the comprehensive construction technology for the tunnel with sandy silt and complicated surrounding environment, including waterproof technology, settlement prevention, and old tree protection.
结合杭州解放路隧道过水厂暗挖段的施工实例,介绍了浅埋暗挖法在饱和砂质粉土及复杂周边环境 条件下的综合施工技术措施,包括防水、防沉和保护古树等方面的措施。