This study investigates the Arctic Ocean warming episodes in the 20th century using both a high-resolution coupled global climate model and historical observati
摘要:本文以西宝客专小村隧道为例,着重介绍客专大断面黄土浅埋隧道在V级围岩段,采用三台阶预留核心土开挖法快速穿过大变形段施工措施。 关键词:黄土;隧道;三台阶; 预留核心土; 沉降;裂缝;安全距离; 措施 Abstract: this article with the XiBao guest designed small village tunnel as an example, this p
A model study is conducted to examine the role of Pacific water in the dramatic retreat of arctic sea ice during summer 2007.The model generally agrees with the