The invention discloses an open-pit mine internal drainage stratum
reconstruction method for rapid fertilization by increasing the
soil moisture content. In the internal dump site, a soil layer, an
aquifer, a water-repelling layer, and a conventional soil drainage layer are sequentially arranged from the surface downwards. A number of
water collection channels are laid horizontally at intervals in the soil layer, and the top surface of the
water collection channels is exposed to the surface. A plurality of
water diversion blind alleys are horizontally laid at intervals in the soil layer. The water blind
alley intersects with the
water collection canal, and a water guide blind
alley is divided into multiple sections by multiple water collection canals; the fertilization and water replenishment seepage
pipe is laid inside the water collection canal, and the laying direction of the fertilization and water replenishment seepage
pipe is the same as that of the water collection canal. Fertilization and water replenishment wells are arranged longitudinally in the initial section, and the fertilization and water replenishment wells are connected with the seepage pipes for fertilization and water replenishment. The invention reduces the
evaporation of soil
moisture, increases the
rainfall infiltration, can realize rapid fertilization and water replenishment under the condition of weak
ecological self-repair ability in the early reclamation stage of the inner dump site, saves reclamation cost and improves the
survival rate of
vegetation.