The invention discloses a thrust-load-
simulation hydraulic
system of a
tunnel boring machine. A rodless cavity of a thrust oil cylinder is communicated with an oil opening of a thrust oil path, a rod cavity of the thrust oil cylinder is communicated with another oil opening of the thrust oil path, and the thrust oil cylinder is connected with a
piston rod of a thrust-load oil cylinder; an oil inlet of a reset one-way valve is communicated with a large cavity of the thrust-load oil cylinder and an
oil tank; one path of an oil outlet of the reset one-way valve is communicated with the rod cavity of the thrust-load oil cylinder, and the other path of the oil outlet of the reset one-way valve is connected with the
oil tank after passing through a slender hole electromagnetic proportional
throttle valve, a thin
cutting edge electromagnetic proportional
throttle valve and an electromagnetic proportional overflow valve; an oil inlet and an oil outlet of an oil and
liquid air-cooling valve group are communicated with the
oil tank. According to the thrust-load-
simulation hydraulic
system of the
tunnel boring machine disclosed by the invention, the electromagnetic proportional
throttle valve and the electromagnetic proportional overflow valve with different opening forms are connected in series and are subjected to uniform parameter adjustment, so that the setting of the thrust-load, the setting of rock-soil static pressure and the advance speed are considered in an unified manner to realize high-fidelity
simulation of the thrust-load of the
tunnel boring machine. The thrust-load-simulation hydraulic
system is also suitable for other
dynamic simulation occasions of linear thrust-load.