7 results about "Mine reclamation" patented technology

The invention relates to the technical field of mining area reclamation, in particular to a mining area reclamation land soil heavy metal fixing device which comprises a vehicle body and two rotating discs arranged at the front end of the vehicle body, a motor is installed on the outer wall of one rotating seat and fixedly connected with a rotating shaft, and a plurality of connecting rods are fixedly connected to the edges between the two rotating discs. A plurality of binding ribs are arranged between the two rotating discs, connecting ribs are fixedly connected between the binding ribs and the connecting rods, a feeding hole is formed in the middle of one rotating disc in a penetrating mode, a conveying hose extending to the outer end of the mounting frame is inserted into the inner end of the feeding hole, and inner frames are mounted at the positions, located at the inner end of the mounting frame, of the outer walls of the two rotating discs; according to the device, the binding ribs are driven to be flexibly deformed, the falling amount of the adsorption blocks is precisely adjusted, soil is turned over to enable the soil and the adsorbed adsorption blocks to fall into the soil, and an adsorbent can be supplemented to a severely polluted area to strengthen the fixing effect.

This invention discloses a method for preparing a red mud-like soil matrix synergistically modified by agricultural and forestry solid waste and microorganisms. This method not only introduces agricultural and forestry solid waste with different carbon-to-nitrogen ratios—high carbon-to-nitrogen ratio solid waste providing a recalcitrant carbon source to maintain long-term metabolism, medium carbon-to-nitrogen ratio solid waste serving as a readily degradable carbon source to accelerate initial fermentation, and low carbon-to-nitrogen ratio solid waste supplementing nitrogen to avoid carbon-to-nitrogen imbalance—but also ensures sufficient carbon source for microorganisms to continuously produce acid and reduce alkali while avoiding excessive nitrogen loss, thus promoting efficient mineralization and humification of organic matter. Furthermore, by introducing biochar-loaded modified microorganisms, the method utilizes the organic acids secreted by microorganisms to deeply reduce alkali, and also utilizes the extracellular polymers secreted by the microorganisms to combine with red mud metal ions to form organic-mineral composite colloids, enhancing the stability of red mud aggregates. This invention features a simple process, low cost, and is suitable for widespread application in fields such as ecological restoration of red mud dumps, mine reclamation, and saline-alkali land improvement.

The application discloses an ecological restoration type shallow mineral resource mining equipment and method, and relates to the technical field of solid mineral resource mining.The equipment comprises a portal frame, a carrier bucket and a connecting rod assembly.The portal frame comprises a horizontal rod and two vertical rods, the two ends of the horizontal rod are connected with the upper ends of the two vertical rods respectively, and the lower ends of the two vertical rods are provided with pulleys.The carrier bucket is arranged between the two vertical rods and connected with the horizontal rod through the connecting rod assembly.The carrier bucket is used for mining and restoring the mining area during work.The application can meet the requirements of cost saving, production efficiency, mine reclamation, dust and noise reduction and the like according to the occurrence of the shallow mineral resource, and can also play a role in green ecological restoration of the surface damaged by the mining of the mineral resource.

This invention discloses a carbon sequestration enhancement system for mine reclamation areas based on the symbiosis of microalgae and resilient plants, belonging to the field of mine ecological restoration and carbon sequestration enhancement technology. It includes a photovoltaic power generation unit, a water storage unit, a microalgae cultivation unit, a resilient plant community unit, a rhizosphere atomization spraying unit, and a control system. This invention constructs a dual-channel synergistic carbon sequestration system—a "rapid carbon sequestration channel" and a "sustainable carbon sequestration channel"—through deep symbiosis between microalgae and the living root systems of resilient plants. Experimental data demonstrates that the carbon sequestration intensity of the symbiosis is approximately 20 times higher than that of single-plant remediation and approximately 3 times higher than that of plant + mycorrhizal + irrigation methods, achieving efficient conversion of mine wastelands from "carbon source" to "carbon sink." Employing a strategy of "using living root exudates as signals and nutrients," atomization devices buried 0.5–2 m deep in the root layer directly spray the concentrated microalgae solution, which has reached the required standard, onto the surface of the living root system in atomized form, forming a stable algal-root composite film.

The invention relates to a soil conditioner produced by utilizing forestry and agricultural residues as well as a preparation method and application of the soil conditioner. The fertilizer comprises a pretreated agricultural and forestry waste mixture, a mineral additive and a beneficial microbial agent. The raw materials comprise, by mass, 80-92 parts of a pretreated forestry and agricultural residue mixture, 5-15 parts of a mineral additive, and 1-5 parts of a beneficial microbial agent. Forestry and agricultural residues are converted into stable organic matters through a composite pretreatment process, so that waste recycling is realized. The product is scientifically compounded with decomposed organic matters, minerals and functional microorganisms to form a'physical structure improvement-chemical nutrient supplementation-biological activity activation 'triple synergistic mechanism, so that the soil structure can be quickly improved, the nutrients can be continuously activated, and the soil fertility can be comprehensively improved. The method is especially suitable for degenerated soil in mine reclamation and the like, can quickly reconstruct a healthy soil ecosystem, and has remarkable ecological value.

The invention discloses a mining area reclamation sugar cane high-sugar and high-yield planting method for optimizing physical and chemical properties of Guangxi soil, and relates to the technical field of agriculture and environmental remediation. A formula is improved based on the typing preparation, and formula quantification parameters are output; applying the improved formula layer by layer according to depth to obtain layered application amount distribution data; selecting a pairing scheme according to the layered release amount distribution data and the layered physicochemical improvement result to obtain a paired plant group scheme; carrying out cultivation regulation and control based on the paired plant group scheme to obtain a sugar content and yield time sequence curve; the sugar and yield time sequence curve is used for triggering a monitoring-adjusting closed loop, and long-term stability treatment measures are output; according to layered application, an active modifier and a passivator are placed at key layers of crop main root system activity, so that root zone pores, ventilation and nutrition accessibility are preferentially improved, and the rhizosphere environment quality is improved without greatly changing the overall soil structure of the earth surface.

The invention relates to stabilized soil for mine reclamation, in particular to stabilized soil for mine reclamation. The stabilized soil comprises the following components in parts by mass: 80-120 parts of in-situ soil, 2-10 parts of an inorganic curing agent, 0.01-0.1 part of an organic curing agent and 0.2-0.8 part of a water reducing agent, the inorganic curing agent is composed of cement, fly ash and desulfurized gypsum, and the mass ratio of the cement to the fly ash to the desulfurized gypsum in the inorganic curing agent is (10-15): (5-12): (2-5). According to the invention, the anti-sedimentation and anti-bleeding capabilities are obviously improved, and the technical problem of poor stability of high silt content slurry is solved.