Aiming to solve the diversity and complexity in arranging machine,great difficulty in excavation and long time in the process of top-down project,queuing theory will be applied to optimizing the arrangement of machine and the construction process and choosing the perfect method of construction.
针对采用逆作工程中,挖土难度大、工期长以及机械配套问题存在的多样性和复杂性,将排队论应用于该施工过程当中,对机械配套和施工过程进行优化,选择最佳的施工方案。
C diagonal brace as enclosure system, anchorage of H steel brace by post-insertion, Trestle-type excavation in layers and so on.
采用地下连续墙加钢筋混凝土斜撑作围护体系,以后插入法锚固H型钢立撑,栈桥式分层挖土等方案,保证了围护安全和基础施工质量。
The earthwork excavation of the foundation pit project was excavated with 3 layess with depths of-4.
软土地基下基坑土方开挖分三层开挖(-4。
Foundation pit support and earth excavation of underground garage in a certain residential engineering;
某住宅工程地下车库基坑支护及土方开挖
On earth excavation and support scheme;
浅谈土方开挖及支护方案
Comparisons on economical and optimal plans of earth excavation;
浅谈土方开挖方案经济优化的比较
wheeled tractor shovel
轮式“拖头”挖土机
One that excavates, especially a backhoe.
挖掘者，挖土机挖掘的人或装置，尤指反向铲挖土机
The farmer was digging potatoes.
那农夫正在挖土豆。
He uses a spade to dig the garden.
他用铁锹在花园里挖土。
His proper tradeis a navvy.
他本来是个挖土的苦力。
They helped the commune members dig up potatoes.
他们帮助社员们挖土豆。
it's too slow for to dig out earth manually, so let's use the digging machine.
用人工挖土太慢了, 咱们还是使用挖土机吧。
A machine, such as a bulldozer or backhoe, that is used for digging or pushing earth.
推土机一种可用来挖掘或推动泥土机器，如推土机或挖土机
The excavator can cast up great heaps of earth
这台挖土机能堆积起许多泥土。
Heavy earth-moving equipment was used to carve a 200-yard channel to drain the water.
人们用重型挖土机挖了一条200码的通道来排水。
To tunnel under(the earth or a surface feature.
挖沟在（土地或表层）之下挖沟
To make holes in(soil)with a pointed implement.
用挖穴器挖用带尖的工具在（土中）
The main task of hydraulic excavator is to dig soil.
挖掘机的主要工作就是土壤的挖掘。
He dug out some Turkish gold coins at the excavation site.
他在挖掘现场挖到几枚土耳其金币。
This project involved 400000 cubic metres of earthwork.
这项工程要挖40万土方。
balanced earthworks
填挖平衡的土方工程
We dug up 180 cuBic metres of earth.
我们挖了180 立方米的土。
A pig roots for acorns with its nose.
猪以鼻挖泥土寻找橡子。