Visible test system and rock mass heating method

A rock mass heating method, comprising:

• step S100, encapsulating a sample by a sample encapsulation device;
• step S200, constructing first fluid communication between the sample and a magnetic fluid loading pump through a magnetic fluid injection pipeline, an upper spacer block, and a first permeable spacer block to form a magnetic fluid injection channel;
• and
• constructing second fluid communication between the sample and the magnetic fluid loading pump through a magnetic fluid discharge pipeline, a lower spacer block, and a second permeable spacer block to form a magnetic fluid discharge channel;
• activating a high-energy accelerator CT detection system to obtain a first state of the sample;
• step S300, injecting hydraulic oil into a pressure chamber until the sample is hermetically encapsulated by the hydraulic oil, to form confining oil to simulate a lithostatic confining pressure;
• increasing a pressure applied to the sample to a set axial pressure value by an axial pressure control device arranged in an axial direction of the sample to simulate an in-situ stress;
• obtaining a second state of the sample based on scanning detection of the high-energy accelerator CT detection system;
• step S400, injecting magnetic fluid into the sample in the second state through the magnetic fluid injection pipeline, and obtaining a third state of the sample based on a seepage state of the magnetic fluid inside the sample or based on a set injection time, wherein the seepage state of the magnetic fluid is detected by the high-energy accelerator CT detection system;
• step S500, heating the magnetic fluid through an alternating magnetic field generator arranged externally to heat an interior of the sample in the third state;
• heating the confining oil through a resistance wire heating device provided under the sample to heat an exterior of the sample in the third state;
• and
• based on temperatures of different positions in the pressure chamber, uniformly heating the sample to a set target temperature, wherein the temperatures of the different positions in the pressure chamber are detected by a temperature detection device.