Based on the depth of the hole and on reports that the district later had its water cut off , american troops concluded that a massive amount of homemade explosive had been stuffed into an underground pipe to avoid leaving any trace on the surface 根据洞的深度和报道说这一地区稍候的停水，美军推测大量自制炸弹被埋在地下管道以防地面留下路痕迹被暴露。
Magnesium silicate temperature preservation dope is kind of ropypaste , it features with well spread , small shringking after dry , the temperacially used in the temperature reservation project fo abnormity equipment andunderground pipes 硅酸盐（镁）保温材料为稠膏体，涂敷性好，干燥收缩小，使用温度范围宽，防水效果好，适用性强，特别适合二异形设备和地下管道的保温。
2 ) the probabilistic model of seismic damage prediction of buried pipeline is presented . both the seismic response and the resistance of pipe structures are treated as the random variables , and their statistical characteristics are discussed 应用可靠性理论，改进了地下管道地震破坏的概率预测方法，将地震作用效应和管道的抗力均作为随机变量，并讨论了其统计特征。
Send a specified electrical signal to the underground cable , when the probe is vertical cutting to the magnetic horizon , the signal is smallest ( almost to zero ) . we can find the locationand depth of the cable according to this principle 通过向地下管道发送出特定的电磁波信号，探测仪利用探头与磁力线地平面垂直相切时，收到的信号最小（几乎为零）的原理来测定埋地电缆的走向和深度。
The computing method of reliability is developed base on damage of pipeline due to earthquake wave and second order damage due to liquefaction . in succession , the paper discusses the method for negative pressure for damaged pipeline according to the method for normal state 论述了地震波造成的管道破坏和由地表液化造成的二次破坏的管道可靠性及其计算方法；对地下管道进行震害预测；并对给水管网的整体可靠性进行了分析。
Take the breakage of the pipe joints caused by seismic wave propagation as main damage mode ; the velocity of seismic wave propagation along the pipelines , soil - pipe interaction , and the correlation between the damage of pipe units are discussed 综合分析了地下管道的地震破坏特征和反应机理，提出以管道在地震波作用下的接头损坏作为主要破坏模式；探讨了地震波沿管道的传播速度，管-土相互作用，管单元的失效相关性等问题。
The conveying medium in pipe has great effect on buried pipeline ’ s damage , its flow pattern , temperature , pressure change , velocity , all of these can influence the shell of pipe and its stress distribution . so it is very important to analyze the fluid - pipe coupling 管道内部的输送介质对管道破坏影响也很大,管内介质的流态、温度、压力变化、流速等对管壁变形和应力分布都有影响,故管道内流体和管道间的耦合分析对地下管道破坏分析很重要。
Secondly , two applications of gpml abc in modeling pulse radar are shown : one is detecting pipeline underground , and the other is its application to highway technology . thirdly , with back - projection algorithm , we have formed the image of tree - trunks . in summary , the application of fdtd in uwb fopen so far is impressive 然后，对适用于有耗媒质的gpml边界条件的应用开展了深入研究，对脉冲雷达探测地下管道和测量高速公路沥青层厚度进行了fdtd算法模拟。
The deformation of parallel buried pipelines and perpendicularly crossing buried pipelines induced by pipe jacking is analyzed by 3 - d fem . the displacement pattern of buried pipelines and its influence factors are studied . the measures for protecting neighborhood underground pipelines and relevantly controlling measures for minishing the ground movements during pipe jacking are advanced 采用ansys程序进行了三维有限元建模，模拟了顶管施工对相邻平行地下管线和垂直交叉地下管线产生的影响，研究了地下管道的位移模式，对影响地下管线位移的主要因素进行了分析，提出了顶管施工中对邻近地下管线的保护措施以及减小地层移动的控制措施。
After the completion of stage 1 in 2001 , which involved the construction of deep underground tunnels to transport the sewage generated from kowloon and the northeastern part of hong kong island to a chemically enhanced primary sewage treatment plant at stonecutters island , the government is considering proceeding to a two - phased hats stage 2 第一期工程包括修建地下管道，将九和港岛东北部产生的污水，运到昂船洲的化学加强初级污水处理厂，有关已于2001年1月完成。如今政府正考虑分两阶段推行净化海港计划第2期。
