Huge deformation of wall rock has a strong impact on the stability of roadway in many underground opening engineering.
在许多地下巷道工程中，围岩巨大的变形严重影响巷道稳定性。
The stability probability of blocky surround rocks in a large underground opening is calculated according to the reliability model.
并利用该模型分析了某大型地下空间块状岩体的稳定概率。
By analysing for engineering examples, we find that the calculating model reflect sufficiently the effect of anchor supporting for. underground opening.
对某地下工程实例的分析，证明这种计算模式充分反映了锚杆支护对于围岩稳定的支护效应。
A study is made for the influence of the factors, such as tectonic geostress, excavation sequences, and reinforcement, on stability of underground opening.
研究地应力、洞室开挖和加固等因素对地下洞室围岩稳定的影响，以验证地下洞室长轴选向的正确性。
Opening the underground corridor for the public will coincide with the extensive restoration of the Colosseum.
向公众开放地下通道将与罗马圆形大剧场的大规模修复同时进行。
And, since they were created underground and not from flowing surface water, not all these passageways have an opening to the outside world.
并且，由于它们是在地下形成的，而不是由地表水流形成，所以并不是所有的通道都有通向外部世界的开口。
"If all such activities go underground, they would be more difficult to control," Lee says, potentially opening a greater market for trafficking.
Lee指出，如果所有活动都转入地下的话，监管会更加困难，而且还可能会滋生一个更大的人口贩卖市场。
Inside the tent was an opening to an underground passageway. They walked in the passageway for about 30 minutes before emerging on the other side.
帐篷里有个一个地下通道的入口，他们沿着这条地下通道走了大约半个小时才到达另外一端。
The main conclusions in this paper are as follows:(1) It's feasible and convenient to simulate the opening process of underground engineering by the large general programme of ANSYS.
主要结论如下：（1） 利用大型通用有限元程序ANSYS模拟地下岩土介质的开挖（采）过程是方便可行的。
The vertical flow of underground thermal fluid resulted from the opening fracture is the important cause of geothermal anomaly.
开启断裂造成的地下热流体的垂向流动是造成地下热异常的重要原因。
Mine fire is one of five big disasters in coal mine. The problem of probing underground fire source's position and limit is still an opening task in our country.
矿井火灾是煤矿五大灾害之一，探测地下火源位置的问题在我国仍然是一项开放性的课题。
This paper presents a new approach to obtain the optimal opening structure of underground mining method by genetic programming.
提出用遗传规划优化地下采矿方法巷道布置的新方法。
The installing and debug of the domestic laser director in underground oblique opening excavation are mentioned. The merit and notice of using laser director is mentioned too.
本文主要叙述了国产激光指向仪在地下斜巷掘进中的安装、调试以及使用激光指向仪的优点和注意事项。
The installing and debug of the domestic laser director in underground oblique opening excavation are mentioned. The merit and notice of using laser director is mentioned too.
本文主要叙述了国产激光指向仪在地下斜巷掘进中的安装、调试以及使用激光指向仪的优点和注意事项。
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