In this paper we combining connecting tunnel project of Subway Line 4 at Xidan-lingjing bystreet in Beijing. To aim at the difficulties of building large-span connecting tunnels in the fine sand layer, through roads and underground pipelines, construction nearby buildings and other project difficulties. Using theoretical analysis, numerical simulation, field tests and other research methods to comprehensive and systemic research the stratum deformation mechanism and process control techniques of shallow excavation method, and a series of results were obtained. Firstly, use the stochastic media theory to analyze the stratum deformation mechanism, concretely analyze the analytic equation of surface horizontal displacement and deformation which were caused by the excavation of single-hole and double-hole tunnel, and further discussion on ground settlement, vertical deformation, surface horizontal displacement and horizontal deformation. Analyzing the main influence factors of surface displacement, and combined with practical work to proof the theory which was applied to shallow buried single-hole tunnel in fine sand layer was scientific.

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Custmo cabinetry helps to organize parts, materials and tools nearby where they can be easily and quickly reached.

custmo櫥柜有助于組織零件，材料和工具的地點的附近欧美A片一级在线观看嗯啊，他們可以很容易地和迅速地達成共識老师洗澡让我吃奶羞羞漫画。

Stephane Simmonet is a military historian at the War Memorial Museum in nearby Caen.

斯特凡Simmonet是在戰(zhàn)爭紀(jì)念館在卡昂附近的軍事歷史學(xué)家。

In the end, the parents had to go to the nearby cyber cafes in search of their children.

最后第1页欧美高清视频看片在线观看网站，那幾位家長不得不到附近的幾家網(wǎng)吧尋找他們的孩子欧美永久视频免费。

The third day early morning, a pair of morning calisthenics old person arrives nearby the garden.

第三天清晨，一對晨練的老人來到花園邊日韩精品欧美视频一区。

The old campaigner in our factory seldom go to the nearby supermarket with young people in spring.

我們廠的老軍人春天很少同年輕人一道去附近的超市中文字幕在线观看2022。

On the one hand, for the area nearby Dawen river and the Jinghang Canal, peasant can use surface water to irrigate, which reduce the use of underground water and the grounder water was protected.

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The things that came home, my mother went to a nearby fruit shop bought candy year.

把東西那回家后亚洲精品色婷婷在线影院，媽媽又到附近的水果店買過年的糖果久久久久久亚洲日韩精品一区区三区。

I entered into nearby an ancient canonical expression building marked as "Engineering Building".

我走進了附近標(biāo)記為工程館的一座古典式大樓。

As she laid down the facts, a nearby Jawa cantina patron collapsed with visible symptoms of Bledsoe's.

就在她陳述事實的時候国产人爱视频A片在线观看，附近一個加哇酒客倒下了欧美精品视频专区在线，其皮膚表現(xiàn)出布萊索病的癥狀。