63 results about "Soil processes" patented technology

The invention discloses a stabilizing processing method of heavy metal contaminated soil. The stabilizing processing method comprises the following steps of (1) excavating the heavy metal contaminated soil, airing and drying the heavy metal contaminated soil, then feeding into a ball grinder, simultaneously feeding clay mineral the mass fraction of which is 0.4%-1%, and carrying out ball milling; step (2) adding calcium salt mass fraction of which is 0.2%-0.8% and a surface active agent mass fraction of which is 0.02%-0.2% to the ball grinder after finishing ball milling, unceasingly rolling and milling the soil in the ball grinder for 10-20min, and regulating soil moisture content; and (3) backfilling the soil processed in the step (2) in a foundation pit, and tamping the soil. The invention provides a physical impacting and bonding method aiming at the problems of existing heavy metal contaminated soil restoration technology that the additive amount of medicament is large, secondary pollution is easy to generate, and the stabilizing effect is not lasting, an exogenous heavy metal pollutant is packed and stabilized in soil granules, the release of heavy metal is reduced, and a stabilizing effect is achieved.

The invention discloses a soil remediation system. The soil remediation system comprises a primary spiral conveyer, a vibrating screen, a secondary spiral conveyer, a thermal desorption rotary kiln, a three-level spiral conveyer, a crusher, a first water condenser, a cyclone dust collector, a combustion furnace, a condenser group consisting of a gas condenser and a second water condenser, a bag type dust collector, a draught fan and a cooling tower. The soil remediation system has simple integration, is simple in operation when being used for soil remediation, simultaneously enables the harmful substances in the soil processed at last to be extremely low, can be used in a recycling manner.

The invention provides a high-speed railway ballastless track subgrade rising soil test system, which comprises a track-subgrade structure model, a high-speed train load model loading device, a rainwater drip immersion device and a measurement and observation device, wherein the track-subgrade structure model is a two-way prestress reinforced concrete structure; the high-speed train load model loading device comprises a plurality of actuators; the rainwater drip immersion device comprises a water storage box and at least one kind of component of a support layer side surface water dripping component and a drill hole water immersion component on a track plate; the measurement and observation device comprises a comprehensive test instrument, a soil body moisture sensor, a tensioning meter, a soil body moisture data collector, a hole water pressure meter, an ultrasonic wave flow rate meter, a dynamic penetrometer and the like. The device structure is simplified; the operation is convenient. The invention also discloses a rising soil test method using the device. The method has the advantages that the steps are simplified; the whole rising soil process can be well simulated; the experiment basis is provided for the rising soil prevention and control.

The invention discloses an automatic agricultural pit digging, planting and soil burying integrated device. The automatic agricultural pit digging, planting and soil burying integrated device comprises a vehicle body, wherein a cab is arranged on the vehicle body, a hydraulic rod is arranged on the vehicle body, a movable rod of the hydraulic rod is connected with a transverse plate, a sapling box is arranged on the transverse plate, seedling clamping devices are arranged on the front side and the rear side of the left end of the transverse plate, cylinders are arranged on the front side and the rear side of the vehicle body, first sleeves are arranged in the middles of the cylinders, a first motor is arranged on the vehicle body, a first gear is arranged on the first motor, a first box body is connected with the inner wall of each cylinder, a soil block smashing device is arranged at the bottom of each first box body, an L-shaped rod is arranged on the inner wall of each first box body, an automatic shear fork clamping device is arranged on the lower side of each L-shaped rod, an automatic earth cutting device is arranged at the bottom of each cylinder, and a master controller is arranged in the cab. According to the device, the first motor drives the first gear to rotate, so that the first sleeves are driven to rotate, then the cylinders are driven to rotate, the processes of digging pits, planting saplings and covering soil are alternately carried out, the integrated process is achieved, the planting efficiency is improved, and the soil block smashing devices smash large soil blocks into small blocks, so that the saplings are prevented from being damaged by crashing.

The invention discloses a lime drying sludge stabilizer of heavy metal compound contaminated soil. The lime drying sludge stabilizer is prepared from the following components in parts by weight: 10 parts of lime drying sludge, and 2-3 parts of ferrous sulfate. The invention also provides an application method of the lime drying sludge stabilizer. The method concretely comprises the following steps: 1) paving the heavy metal compound contaminated soil on flat ground after crushing; 2) scattering the lime drying sludge stabilizer on the heavy metal compound contaminated soil; 3) carrying out rotary cultivation for the first time; 4) carrying out alternation of wetting and drying for 15 days, and carrying out rotary cultivation for the second time to obtain stabilized soil; 5) doping straw according to the volume ratio, and carrying out rotary cultivation for the third time, so as to obtain the tillable repaired soil. The invention also provides application of the lime drying sludge stabilizer of the heavy metal compound contaminated soil and the application method thereof in soil heavy metal pollution control. The invention also provides application of repaired soil obtained by using the application method of the lime drying sludge stabilizer in crop planting. The soil processed by the method is significant in heavy metal stabilization effect.

The invention relates to a hand-operated soil sampler including: a T-shaped handle, an extending rod, scales, square-shaped grooves, a bottom end of the extending rod, a separate-type drill, sawtooth-shaped single-blade annular cutter, and a plurality of aiding apparatuses. In the invention, the action force of a conventional T-shaped rod, according to torque, is converted into action force basedon lever principle, so that force application modes during drilling and fetching soil can be converted; meanwhile, by adjusting the length of a telescopic rod, work load on an operator can be reduced;the square-shaped grooves in the extending rod can be matched with the aiding apparatus, so that different square-shaped grooves can be changed according to depth of drilling and fetching soil; if the soil is hard and needs to drill to a farther depth, the aiding apparatuses can act on one drilling rod at the same time. By means of the sawtooth-shaped single-blade annular cutter, the drill can drill the soil conveniently; the separate-type drill can achieve separation between a soil column and the inner wall of the drill. The soil sampler has reasonable design, can save manpower, is high in working speed, effectively solves the problems of drilling and fetching soil during soil collection, and greatly improves work efficiency.

The invention discloses a modularized dehydration method for polluted bottom mud of rivers, lakes, reservoirs and ponds. The method comprises the steps: sequentially carrying out pretreatment on the polluted bottom mud, carrying out primary slurry concentration, carrying out secondary slurry treatment, carrying out slurry dehydration treatment, buffering and collecting residual water, carrying out physical and chemical treatment on the residual water and carrying out deep treatment on the residual water. The dredged mud is primarily concentrated after being subjected to impurity removal and screening, the solid content of the mud is increased to 15-20% from 1%-5% of that of pretreatment; compared with a traditional sedimentation tank concentration process, the method has the advantages that the mud concentration can be remarkably increased, then secondary dosing treatment is carried out, along with the increase of the mud concentration after primary concentration, and the dosage in the link is reduced by about 20%; ad finally, dehydrating is carrying out to produce solidified soil and residual water, the collected soil is recycled, the residual water is purified by matching with recycling modes such as a baking-free brick process, a greening soil process and the like, and the residual water is discharged to a receiving water body after the residual water meets the discharge requirement. Through multistage treatment in the dehydration method, the dehydration speed of the polluted bottom mud can be integrally accelerated, and the treatment efficiency of the polluted bottom mud is improved.

The invention provides a photochemistry reduction repairing method for soil polluted by hexavalent chromium. The method has the advantages that operation is simple, chromium can be directly removed from polluted soil, and secondary pollution is avoided. The technology scheme of the method comprises following steps: (1) soil polluted by hexavalent chromium is dip rinsed by a [S,S]-EDDS eluent; (2) the soil processed by the step (1) is filtered, and after solid-liquid separation, iron salt and multi-carboxylate are added into the eluent; (3) hexavalent chromium is subjected to a photochemical reduction reaction in the presence of light. The photochemical reduction repairing method for soil polluted by hexavalent chromium has the advantages that operation is simple, cost is low, hexavalent chromium in polluted soil can be high-effectively separated and degraded, and secondary pollution is avoided.

The invention discloses a device for simulating development of a fractured pipeline in a karst region. The device, which simulates the development of underground fractured pipelines in the karst region through PVC steel hoses of different pore sizes, simulates the influence of the fractured pipelines on the soil loss and material migration in the karst region under the influence of the different degrees of bending (bending coefficients) under different development levels (aperture size change), constructs monitoring micro-areas of the surface-underground binary space water and soil process inthe karst region, analyzes the influence of the development of the fractured pipelines on the loss and material migration in the karst region through indoor artificial rainfall experiment, and revealsthe spatial coupling relationship between hydrological process and material migration process in underground fractured pipelines.

The invention discloses a novel method for repairing soil polluted by heavy metals such as cadmium, lead, mercury and chromium. The repairing method comprises two steps for repairing the soil polluted by the heavy metals such as cadmium, lead, mercury and chromium: the first step is to add composite materials such as a sulfur-containing material and a phosphorus-containing material, and carry out soil acidification process to enhance release of positive ions of the heavy metals such as cadmium, lead and mercury, wherein through an oxidation-reduction reaction in the soil acidification process, hexavalent chromium is reduced into harmless trivalent chromium; and the second step is to add a composite combination material and a passivation material for improving the pH value of the soil, so that passivation and fixation of heavy metals such as cadmium, lead, mercury and chromium are realized in the process of improving the pH value of the soil. The method has the outstanding advantages of being rapid in acidification, accurate in acidification, thorough in repair, high in safety, simple in repair link and the like. By applying the combination material and the method disclosed by the invention, a complete repair of soil in single-element pollution or combined pollution of heavy metals such as cadmium, lead, mercury and chromium can be realized.

The invention discloses a ground anchor device suitable for a saturated sandy soil site. The ground anchor device comprises a drill rod and a drill bit. The drill bit is installed at the bottom end of the drill rod, and a plurality of water permeable holes are evenly distributed on the wall of the drill rod. The ground anchor device aims at reducing and solving the problem that in the process that a traditional ground anchor device drills into the saturated sandy soil site, overlarge disturbance is generated, and therefore, wide-range liquidation occurs to sandy soil around a ground anchor as much as possible. The water permeable holes are formed in the outer side of the drill rod. In the drill rod in-soil process, excess pore water caused by disturbance can permeate into the drill rod through the water permeable holes so that dissipating of the excess pore water is accelerated, therefore, the liquidation occurring possibility is reduced, and the pulling-resistant property of the ground anchor drill rod is ensured.

A disclosed classification processing method for high-liquid-limit soil in roadbed engineering comprises the following steps: S1, doping quicklime with high-liquid-limit soil for reducing water content; S2, employing plasticity index, CBR (California bearing ratio) value, liquid limit and fine-particle content to classify the high-liquid-limit soil processed in the step S1; and S3, respectively processing classified high-liquid-limit soil. The method helps to obviously reduce water content of soil, comprehensively gives consideration to improvement difference degree of doping sand, quicklime and cement to various physical properties of soil, and helps to effectively improve construction quality, reduce discarded soil or borrowed soil quantity, and save engineering cost, thereby promoting scientific utilization of high-liquid-limit soil.

The invention provides an environment-friendly soil water controlling agent capable of directly converting soil into road surface layer. The soil water controlling agent can prominently improve the hardness of soil and control the water content, is very practical, is convenient for construction, and is capable of directly converting soil on site into a road surface layer. The soil processed by the water controlling agent can directly replace the cement layer and the asphalt layer only by mixing the soil with a trace amount curing agent. The compression strength can reach 3 to 8 MPa after 7 days. The soil layer can directly replace the basic layer, the water stabilizing layer, and the surface layer in road construction, and the construction cost can be reduced by 30 to 50%. The soil layer has the advantages of low cost, simple construction, good fireproof and anti-seismic property, and durability. A novel road basic layer and surface layer construction method is provided. The road composed of the soil processed by the water controlling agent can be crushed for cultivation in the future, and thus the road is according with the social development trend of scientificity, environment-friendliness, ecology, and energy saving.

The invention discloses a road and bridge connection structure capable of effectively relieving bridge bump. The connection structure comprises an inverted frustum-shaped structure and filler. A flexible structure layer good in integrity and large in stiffness is formed by using the inverted frustum-shaped structure and mixing soil processed by sodium silicate, namely sodium silicate stabilized soil. By using the modulus gradual change principle and taking settlement factors including a foundation and a roadbed into consideration, an inverted frustum-shaped structure reinforcing area is arranged on a road and bridge transition section, the sodium silicate stabilized soil is added into the structure reinforcing area, one end of the flexible structure layer is fixed to an abutment, the other end of the flexible structure layer is connected with the roadbed, too large differential settlement is eliminated, and stable transition between the modulus of the rigid abutment and the modulus of the flexible roadbed is achieved. The connection structure can effectively reduce bridge bump and secondary bump problems, improves comfort and safety of driving, greatly reduces maintenance cost for bridge processing, and is remarkable in economic benefit.

The invention aims at providing a medicine for treating anhypnia. The medicine is prepared by taking radix angelica sinensis, radix paeoniae alba, moutan bark, tangerine peel, atractylodes macrocephala koidz. (soil processed), platycladi seeds, amber, Chinese magnoliavine fruit, roses, radix glehniae, magnets, rhizoma pinellinae praeparata, massa medicata fermentata fujianensis, poria cocos, radix ophiopogonis and prepared radix licorice, mixing the components after flowing steam sterilization and drying are conducted, smashing the mixture into medicine powder of 100 meshes or above and filling capsules with the medicine powder. The medicine is free of toxic and side effects and has a good treatment effect when used for treating anhypnia.

The invention discloses a rare camellia introduction and cultivation method including the following steps of A. deeply plowing the soil in the greenhouse and paving a sand layer at a depth of 30-40cm from the soil surface; B. sowing camellia seeds into the soil processed in step A, fertilizing for the first time after the sowing, and watering once every 2-3 days; C. selecting the branches having the diameter of 1.5-2mm and cutting the branches into the branches having the length of 12-15cm when the branches of the camellia seedlings are semi-lignified; D. grafting the branches made at step C into the cultivation soil for continuous plantation; and E. fertilizing the cultivation soil grafted with the camellia branches for the second time and watering once every other day. The rare camellia introduction and cultivation method overcomes the defects in the prior art, and improves the survival rate of camellia introduction.

The invention discloses a rice transplanting mechanism of a mulch applicator for agricultural planting, and particularly relates to the field of agricultural machine.The rice transplanting mechanism comprises a traveling frame and a fixing frame, a first through groove is formed in the middle of the top of the traveling frame in a penetrating mode, a second through groove is formed in the right side of the top of the traveling frame in a penetrating mode, a charging barrel is arranged in the second through groove, the bottom of the outer side of the charging barrel is sleeved with two clamping sleeves, a motor is fixedly installed on the back side of the fixing frame, the output shaft end of the motor is fixedly connected with a rotating shaft through a coupler, the end, away from the motor, of the rotating shaft is fixedly sleeved with a rocker, and the end, away from the rotating shaft, of the rocker is hinged to a connecting rod. In the process that the clamping sleeves move downwards to be inserted into soil, extrusion can be generated between a pressing part and a baffle, the clamping sleeves are opened in the downward moving process, a mulch application function is achieved, a pit digging function and a function of automatically planting seedlings into pits are also achieved, and the practicability and the working efficiency of the rice transplanting mechanism are improved.

The invention relates to the field of soil process analysis, in particular to a microcosm culture device and application thereof in quantitative analysis of soil carbon diffusion and microorganism utilization processes. The microcosm culture device comprises a closed container as well as a culture box and a dialysis tube which are positioned in the closed container, the incubator comprises a soil layer; the dialysis tube is connected with the incubator, part of the tube body penetrates through the side wall of the incubator in the length direction and extends into the soil layer, a carbon source is contained in the dialysis tube, the dialysis tube can enable the carbon source to be diffused to the soil layer, and the water potential inside and outside the dialysis tube is always kept consistent. The quantitative analysis method for the soil carbon diffusion and microorganism utilization process is provided on the basis of the microcosm culture device, the relationship between the efficiency of utilizing the exogenous carbon source by the microorganisms and the space can be explored through the method, and the influence of the carbon diffusion distance on the efficiency of utilizing the exogenous carbon by the microorganisms is further quantitatively analyzed.

The invention provides a method for improving heavy metal contaminated soil through earthworm-plant coupling. The method includes the steps of firstly, normally mining a heavy metal mine lot, and evenly scattering corn straw, straw and other organic matter smashed particles on surface layer soil by the coverage thickness of 15 cm; secondly, plowing and preparing the soil and the organic matter smashed particles covering the upper layer through a plowing machine; thirdly, smashing and refining the soil plowed in the second step through a soil preparing machine, mixing the refined soil with organic matter, and controlling the particle size at 2-5 mm; fourthly, spraying a sodium hypochlorite solution with a certain concentration on the soil in the third step, conducting disinfecting and adjusting the soil water content; fifthly, selecting eisenia fetida obviously with the clitellum individual mass of 250-400 mg, putting the eisenia fetida into the soil processed in the fourth step, and scattering a certain number of herbaceous plants with robust plant root systems. The life habits of earthworms and fertilizer tendency of the plants are sufficiently used for processing the bare earth surface in the heavy pollution area, and the method has the quite positive effects.