Quantitative and volume aircraft

At the beginning of this week, helicopters crashed near the Kadoorie Farm in Tai Po. Most of the news reports mentioned that the departments involved in the aftermath and investigation did not mention the Lands Department. Readers may ask, how does the Lands Department relate to the crash? It is no wonder that the work of the Department in this area is of a special nature and is not regular. However, the staff of the Survey and Mapping Office of the Department is like a fire brigade stationed at the airport. It is 24 hours old. Whenever a crash occurs, the emergency measurement team members of the department responsible for assisting the search will be on call and will be rushed to the scene. During the typhoon Senm attack in 1999, there was a crash of the China Airlines aircraft at the Chek Lap Kok airport at dusk. After the flaps were turned over on the runway, the personnel of the emergency survey group risked their own storms. I rushed to the scene to start work.

What exactly is the surveyor doing on the spot? Since the planes are mostly in remote mountainous areas, they first need to provide maps and plans for the inter-departmental search and rescue team to help determine the location of the wreckage of the aircraft, as well as aerial and ground photos of the scene of the crash. The data and measurements will be sent to the transport. And the Civil Aviation Accident Investigation Agency under the Housing Bureau has followed up.

For example, in the above-mentioned 1999 turn-over incident, surveying and mapping personnel used the computer technology at that time to simulate the landing of an aircraft in an accident, reorganizing the case like an investigating agent, and letting the investigating experts know the accident process (how) As for the cause of the accident (why), of course, civil aviation experts should be dismantled.

When it comes to technology applications, the Survey and Mapping Office of the Lands Department is one of the many government departments. In recent years, it has taken the lead in using unmanned aerial vehicles for aerial photography. It has also used ground 3D laser scanners and other tools to construct three-dimensional models. Make the accident investigation more specific and comprehensive.

Measuring the crash of a plane or hitting a mountain is not only a technical challenge for the surveyor, but also a test of physical strength and guts. In a plane accident last year, the site was located in a remote Maweizhou special area. The survey team was different from other disciplined personnel responsible for search and rescue. It did not have physical fitness and related training. It was only backed by willpower and responsibility in unstable weather. Wading in the mountains to complete the task. Another helicopter accident occurred in 2010. The scene of the accident was the water surface of the Shing Mun Reservoir. The urgent measurement was to shoot at low altitude. The surveyor in charge of this work is also required to shoot outside the cabin of another helicopter. Less courage can’t be done.

In the past, Hong Kong people nicknamed the “employed people” for the unemployed or idlers. Although they did not intend to speak out about the land surveyor industry, they were not fair. Hong Kong’s land is precious, and there is no clear land measurement. The disputes are inevitable. Effective land management and control, dealing with land boundary and title disputes, land compensation, and construction of evidence, relying on our land surveying personnel who go up the mountain, the sea and the flying sky, I