Single-mode optical fiber having automatic control heat source specifically produced for hydraulic seepage measurement

A single-mode optical fiber having an automatic control heat source specifically produced for hydraulic seepage measurement, comprising:

• a single-core optical fiber, an inner protective elastic layer, a heat insulation steel ring, an inner-layer filling protection ring, an elastic hard ring, and an anti-seepage heat insulation hard sleeve ring arranged in sequence from inside to outside, wherein the single-core optical fiber is connected to a plurality of outer circular sheathing protection pipes respectively, the outer circular sheathing protection pipes sequentially pass through the inner protective elastic layer, the heat insulation steel ring, the inner-layer filling protection ring and the elastic hard ring and are connected to the anti-seepage heat insulation hard sleeve ring, each outer circular sheathing protection pipe is filled with a drainage water storage cotton sleeve, the drainage water storage cotton sleeve is connected to a second filter screen, the second filter screen is provided with a gauze through-hole of the second filter screen, the second filter screen is connected to a first filter screen externally, and the first filter screen is provided with a gauze through-hole of the first filter screen.