| 摘要 |
The present invention relates to a first grade gravity station surveying system of an underground structure for gravity surveying for public surveying which is installed in an underground system and checks a gravity in real time includes a gravity surveying apparatus having a case body, a fall rod, a pneumatic controller, an elevator, a falling body fixing rod, a condition detection sensor, a cover and controller, and is capable of managing reliable gravity surveying information through precise gravity surveying in an underground structure which is not suitable for gravity surveying. [Reference numerals] (131) Pneumatic detection module; (132) Pump; (140) Controller; (141) Verticality detection sensor; (142) Shock detection sensor; (143) Timer; (144) Distance sensor; (150) Elevator; (160) Falling body fixing rod; (170) Communication device; (180) Condition detection sensor; (200) Data collection device |
