Patent RU-2735787-C2 (RU)
Inventor: Sergeev Sergei Sergeevich
IPC: G01V3/11
Filed: 2019-03-29
Granted: 2020-11-09
Abstract: FIELD: measuring equipment. 
     SUBSTANCE: invention can be used to search for passage point of at least two underground utilities: cable lines, pipelines of water supply and heating network, gas and oil pipelines. Method for determining location of communication, characterized by that, in the presence of at least two communications, an approximate communication route is determined, after which generator with transmitting antenna is installed over assumed passage point of second communication, receiver of electromagnetic radiation, which contains at least one electromagnetic field sensor, is installed above a prospective place of passage of the first communication at a predetermined distance from the generator. Formation of induced current in first communication is carried out using transmitting antenna of generator by changing value and spatial distribution of electromagnetic induction field of transmitting antenna of generator to moment of minimum electromagnetic signal fixation by at least one electromagnetic field sensor from first communication. Position of spatial distribution of field of electromagnetic induction of generator antenna is fixed. Receiver is moved along measurement points of electromagnetic field signals passing at a predetermined distance along the expected passage point of the second communication, with subsequent determination of second communication passage point by moving the electromagnetic radiation receiver across the intended location of the second communication path at each measurement point of the electromagnetic field signals to the moment of maximum electromagnetic signal fixation by at least one electromagnetic field sensor from the second communication corresponding to the second communication passage place. A generator with a transmitting antenna is installed over the assumed passage point of the first communication. An electromagnetic radiation receiver is mounted above the intended location of the second communication at a predetermined distance from the generator. Performing formation of induced current in second communication using transmitting antenna of generator by changing value and spatial distribution of electromagnetic induction field of transmitting antenna of generator to the moment of at least one electromagnetic field sensor fixing minimum value of electromagnetic radiation signal from the second communication. Position of spatial distribution of field of electromagnetic induction of generator antenna is fixed. Receiver is moved along measurement points of electromagnetic field signals, passing at a predetermined distance along the expected passage point of the first communication, with subsequent determination of the first communication passage point by moving the electromagnetic radiation receiver across the intended place of passage of the first communication at each measurement point of electromagnetic field signals until the maximum electromagnetic signal value is fixed from the first communication corresponding to the first communication path. 
     EFFECT: high accuracy of determining location of communication. 
     14 cl, 6 dwg