This paper introduces the necessity and importance of final survey of underground water supply line, expounds the contents of and methods for the surveying, and advances some suggestions.
介绍了城市地下给水管线竣工测量工作的必要性和重要性，阐述了测量的内容及施测方法，提出了一些建议。
Application to a conduit project shows that the system can be applied to the construction and safety monitoring of underground projects surveying.
通过在顶管工程中的实际应用，表明系统在地下工程施工、安全监测中均有较好的应用价值。
Ground penetrating radar (GPR) has been used widely in the underground metal mines, and the results of surveying are often influenced by the complicated subsurface environment.
探地雷达技术(GPR)在地下金属矿中应用日益广泛，然而复杂的井下环境时常影响雷达的测试效果。
The electricity character of karst cave has much difference than that of wall rock, so the surveying method of direct current can find out if there be karst cave underground.
由于地下岩溶与周围围岩存在明显的电性差异，可以通过直流电法勘探查明地下是否存在岩溶形态。
Seismic exploration is a feasible method for surveying geo-structure in underground.
地震勘探对地下地质结构的调查是一种行之有效的方法。
Seisemic exploration is a feasible method for surveying geo-structure in underground.
地震勘探对地下地质结构的调查是一种行之有效的方法。
With the development of electromagnetic applications in modern science and technology, electromagnetic wave surveying underground targets become an important area of application.
随着电磁波应用在现代科技中的飞速发展，电磁探测地下目标成为电磁波应用的一个重要领域。
The engineering practice indicates the above-mentioned control surveying technique for underground engineering of city is applicable and valuable.
工程实践表明，上述采用的测控技术和方法对于城市地下工程施工有实用价值。
GPSGSM is the core of Management System of Geology and Surveying in Underground Mine, with the goal of automatic processing of graphic data, computer aided mapping and its dynamic modification.
地下矿地测图形处理系统是“地下矿地测信息管理系统”的核心部分。
Surveying underground is influenced by all kinds of factors, which is frequently conflicted with other work.
作业受各种因素影响，经常与其他工作发生冲突。
Surveying underground is influenced by all kinds of factors, which is frequently conflicted with other work.
作业受各种因素影响，经常与其他工作发生冲突。
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