Mining subsidence area oil gas pipeline monitoring system

The utility model relates to a mining subsidence area oil gas pipeline monitoring system based on the fiber bragg grating technology, which comprises a pipe body strain monitoring device, a pipe-soil relative displacement monitoring device and a mining subsidence area horizontal deformation monitoring device, wherein, a fiber bragg grating strain sensor a (3) and a pipe-soil relative displacement sensor a (4) are mounted on the monitoring section of an oil gas pipeline a (2) of a mining subsidence area 1, sensors on each section are serially connected in a welded manner, the sensors are connected with an optical cable a (7) through an optical junction box a (6), the optical cable a (7) is connected with an optical switch (8), the optical switch (8) is connected with a fiber bragg grating demodulation instrument (9), the demodulation instrument (9) is connected with a lower computer (10), data pretreated by the lower computer (10) is transmitted through a wireless communication module a (11), a wireless communication module b (12) receives and sends the data to an upper computer (13), and a fiber bragg grating sensor network a (5) monitors the horizontal displacement of a soil body in real time and sends the data to the upper computer (13).