主要介绍了凿岩台车DCS12液压系统发热、欠压的主要原因及诊断、处理的办法。
The paper mainly introduces hydraulic system of DCS12 rock drilling rig about main cause of heating and low voltage and means of diagnosis and treatment.
着重论述了水平井段欠平衡钻井负压差值的选择依据，以及泡沫流体各参数的设计方法。
How to select the proper different pressure of UBD in the horizontal part of the well was discussed in this paper, as well the design of foam parameter.
恢复正常供电的前提下，在失压或应急源的持续欠压下提供延迟的自动失效。
Provides automatic defeat of delay on loss of voltage or sustained undervoltage of emergency source, provided normal supply has been restored.
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