Urban suburban railway wiring system with three-way interconnection and intercommunication and two-way independent turn-back operation functions

The invention discloses a urban suburban railway wiring system with three-way interconnection and interworking and two-way independent turn-back operation functions. The scale of an existing rail transit network is gradually enlarged, and optimal configuration is difficult to achieve. An uplink main line, a downlink main line, an uplink main line of an uplink main line left connection line 1, an uplink main line of a right connection line 2, a downlink main line of a downlink main line left connection line 1 and a downlink main line of the right connection line 2 are arranged between an uplink platform and a downlink platform; an uplink main line and a downlink main line of a line 3 are arranged on the outer sides of the uplink and downlink platforms respectively; a first single crossover and a third single crossover are arranged on the right side between the uplink main line and the downlink main line, and a second single crossover and a fourth single crossover are arranged on the right side between the down