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- It is a very difficult problem of overbreak in tunnel excavation. 超欠挖一直是隧道开挖中遇到的一大难题。
- The tunnel excavation mechanics behavior of the banding rocks was simulated by the ANSYS general finite element computation software. 并用ANSYS通用有限元计算软件对层状岩体中隧道开挖的力学行为进行了数值模拟。
- Methods of tunnel excavation in unconsolidated formations and the collapse zone treatment are intro-duced according to the formation properties fo exit section of Yangzong No. 针对阳宗海一号隧道出口段的地层特点，介绍了在松散土体地层中遂道施工方法的选择及在施工中出现坍塌的处理方法。
- The surface ground subsidence caused by tunnel excavation is a high nonlinear course of self-organization.It is formed by disordered rock mass self-organization. 摘要隧道开挖引起的地面沉陷是由于隧道开挖在地下形成空洞，受扰动岩体通过自组织在地面形成的一种损害形式，其形成过程具有高度非线性。
- Due to the difference in stress paths between the loading and unloading conditions, it is unsuitable to apply mechanical model under loading condition to stability of tunnel excavation. 由于岩体在加载和卸载条件下应力路迳的不同，仅采用加载条件下所建立的力学模型来研究隧道的开挖稳定性问题是不适合的。
- Because of the weak borehole sealing and inadequate use of the initial free face, the higher investment and unsatisfactory blasting effect still exist in the mine tunnel excavation blasting. 由于炮孔堵塞不牢和初始自由面利用不充分,井下平巷的掘进开挖爆破仍存在投入大、爆破结果欠理想等问题。
- In this paper, based on project excavation of the Wansongling tunnel, the monitoring way and controlling technology of vibration of blasting earthquake wave induced by tunnel excavation were studied. 以万松岭隧道工程开挖为研究对象,对隧道工程开挖施工爆破地震波的振动监测方法及控制技术进行了研究。
- double tube tunneling excavation 双孔平行隧道
- tunnel excavation and dewatering 隧道开挖及疏水
- Tunnel excavation by blasting can be directly influenced by karst cavities when tunnelling through the karst strata with blasting method,which brings a lot of damages such as landslide and casualties. 在岩溶地区采用钻爆法进行隧道开挖施工;溶洞的存在对隧道爆破开挖安全有直接影响;严重者会造成塌方、伤亡等重大事故.
- In this PaPer,a digital simulation was made to the temPerature distribution and variation in country rocks of tunnel excavated 20 years ago. 本文对井巷开掘后20年内,围岩中温度分布及其变化情况进行了数值模拟。
- Drill and Blast Method of Tunnel Excavation on Hard Rock 硬岩地铁隧道钻爆法开挖结合盾构法衬砌的施工技术
- Alternative option of TBM and Drill-and-blast in tunnel excavation TBM与钻爆法隧洞开挖方式的选择
- They are building a submarine cable tunnel. 他们正在建设一条海底电缆隧道。
- Excavation of the site will begin tomorrow. 明天开始挖掘工作。
- They are digging through the hill to make a tunnel. 他们正在凿山建一条隧道。
- The excavation of the buried city took a long time. 发掘埋在地下的城市花了很长时间。
- The excavation of the bur city take a long time. 发掘埋在地下的城市花了很长时间。
- Model Test on Single Four-lane Highway Tunnel Excavation 单洞四车道公路隧道开挖的模型试验
- The kid dug a tunnel in the sand. 小孩在沙堆里挖了一个地道。
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