Warning: file_put_contents(): Only 0 of 5593 bytes written, possibly out of free disk space in /home/www/wwwroot/zidian/69228.com/index.php on line 55 五月天婷五月天综合网在线,超碰人人做人人爽人人
When confined aquifer under the bottom of the pit, the foundation excavation will reduce the thickness of overlying impermeable layer. 在基坑底部以下存在承壓水層的情況下，基坑開挖減少含水層上覆不透水層的厚度。