Control of shield machine in the construction of three Liu Wenru Paodingjieniu 

As a qualified shield driver, Liu Wen, the driver of the 80's three construction company, has been driving a shield machine for 10 years. For him, every job is a new challenge.

Liu Wen once had a number of major project experience, in these important projects, shield machine is complex, use is also very troublesome, shield machine light, machine, electricity, liquid, sensor, information technology in one, known as "the king of machinery"".

Although its shape is huge, its inner space is very narrow. Liu Wen, a 1.85 metre tall man, shuttled into the shield machine every day. He studied the system of the machine very thoroughly, and could correctly determine the fault of the machine through the sound emitted by the shield machine, so as to timely adjust and eliminate the hidden danger.

"It's like a magical craftsmanship'as, only in-depth understanding of the shield machine, in order to control it." Liu Wen said.

In the eyes of Liu Wen, the shield machine is a "robot", and the sound of the machine is its breathing. "My fellow soldier shield machine is like an industrial robot. The steel is its skeleton, the hydraulic system, the geomantic omen system is its blood and internal circulation system, and the electrical system is the nervous system.". As a shield driver, you need to check every part, system, and take care of it." Liu Wen painted the shield machine structure diagram, while introducing to the author.

The shield machine in different parts of the sound operation will be different, such as shield machine startup, normal voice is "buzz buzz", if a failure occurs, the voice will become fragmented; and the normal operation of oil pump is a regular interval of a "puff out puff out 'voice. If the sound interval changes, it may be grease after the need to replace, but also may be the grease valve broken." Liu Wen said: "if there is no timely detection of failure, there will be leakage, mud and other circumstances, it may be flooded the entire tunnel.". Of course, the operation of the machine is normal, can also be detected by data, but I think through sound judgment, as a qualified shield driver essential skills."

Before each construction, the Engineering Bureau needs to draw up the tunnel axis according to the survey results. The tunneling accuracy of the national standard is no more than 5 cm with the tunnel axis error, while Liu Wen's requirement is within 5 millimeters of the positive and negative.

It is not easy to do so high, but Liu Wen is still hard, every time his performance is very good, even the foreign professional also give him a thumbs up.