The invention discloses a modular filling
retaining wall structure, which belongs to the technical field of paste filling and comprises a
permeation module and a topological support module. The
permeation module comprises permeable
geotextile, a reinforcing mesh and a water drainage
pipe, the permeable
geotextile is detachably anchored on the surrounding rock to seal the roadway, the reinforcing mesh is attached to the permeable
geotextile, bleeding holes are formed in the permeable geotextile from top to bottom, the water drainage
pipe comprises a liquid inlet section and a liquid drainage section, the liquid inlet section penetrates through the bleeding holes to extend into the paste filling area, and the liquid drainage section penetrates through the liquid drainage section to extend into the paste filling area. The liquid
discharge section is fixed on the reinforcing mesh, and the liquid inlet section is wrapped with a filler filter layer through reverse filter geotechnical cloth; the topology supporting module comprises a supporting matrix which is detachably anchored on the surrounding rock. The
permeation module is of a three-stage permeation structure of permeable geotextile-reinforcing mesh-drain
pipe, so that the permeation module has high permeability; the
support matrix provides support and can ensure the stability of the structure; and the permeable geotextile and the supporting matrix are detachably anchored on the surrounding rock, so that the cyclic utilization of materials is realized.