41 results about "Soil zone" patented technology

The invention relates to a soil sampling device for exploration, and belongs to the technical field of exploration equipment. The soil sampling device comprises a bottom plate, a fixed plate is fixedly mounted on the upper surface of the bottom plate, a baffle plate sleeves the outer side of the fixed plate, the baffle plate is mounted on the bottom plate and is fixedly connected with the bottom plate, and a first through hole is formed in the fixed plate; and a side surface soil sampling mechanism is mounted in the first through hole, and a driving mechanism for driving the side surface soilsampling mechanism is fixedly mounted at the upper end of the fixed plate. The driving mechanism is arranged to be matched with the side surface soil sampling mechanism, the side surface soil samplingmechanism is pushed outwards under the driving of the driving mechanism to obtain a complete soil layer, then the obtained soil is brought back to the interior and taken out integrally, the completeness of an exploration sample is guaranteed, and the exploration accuracy is improved; meanwhile, a supporting mechanism is arranged for matching, so sampling at a suitable depth is facilitated, the soil sampling device is convenient to operate, the sampling efficiency is improved, and the soil sampling device is more convenient and practical.

The invention discloses a method for reducing loss of chemical fertilizer in soil. The method is to divide soil into a plastic film covered zone and planting zones which are at two sides of the plastic film covered zone, cover the soil in the plastic film covered area with a plastic film, apply chemical fertilizer in soil in the plastic film covered area to protect the chemical fertilizer from rain and plant seeds or seedlings of plants in soil of the planting area. The method uses soil zone division, plastic film covering and other technologies to realize water and fertilizer separation to reduce loss of nutrition with water and environment pollution caused by lost fertilizer flowing into the environment and improve use rate of the chemical fertilizer, thereby improving the input-output ratio of the chemical fertilizer for farmers.

The invention provides a testing apparatus used for simulating foundation pit three-dimensional seepage caused by combined effects of separating-lowering-pouring and ground deformation mechanism. The testing apparatus is used for solving a problem of lack of experiment equipment, which is used for simulating foundation pit three-dimensional seepage caused by combined effects of separating-lowering-pouring and ground deformation mechanism, and systematic researches on relating data and mechanism at present. The testing apparatus comprises a model casing, geotextile, permeable steel plates, underground diaphragm walls, a pumping well, a recharge well, measuring devices and data collecting devices. The model casing is divided into a water zone, a soil zone and a foundation pit zone; the measuring devices comprise a flowmeter, a stratum displacement meter, a water manometer, a contact electric displacement meter, a pore water pressure gauge, and the like, and is capable of realizing accurate measurement on flow displacement pressure; and the data collecting devices are connected with the measuring devices. The testing apparatus is capable of realizing researches on the mechanism of pumping depression cone and recharge lifting underground water level three-dimensional seepage effects, and the relationship between ground deformation and groundwater table fluctuation.

The invention discloses a freeze-proof method for a deep water well in a frozen earth zone and a freeze-proof deep water well with a good freeze-proof effect and low freeze-proof energy consumption. The freeze-proof deep water well in the frozen earth zone comprises an outer sidewall (11), an inner well casing (12) and an outer well casing (13) which is installed between the inner well casing (12)and the outer sidewall (11) in a sleeving mode. A gap (14) is arranged between the outer well casing (13) and the inner well casing (12). The outer well casing (13) is tightly connected with the lower end of the inner well casing (12) in a closed mode, at least one circulating water inlet (61, 62) is formed, and the circulating water inlet is connected with outlets of circulating water pumps (51,52). The outer well casing (13) is tightly connected with the upper end of the inner well casing (12) in a closed mode. Circulating water outlets (63, 64) which communicates with the gap (14) betweenthe inner and outer well casings (12, 13) and the inner portion of the inner well casing (12) are formed in the side wall of the upper portion of the inner well casing (12).

The invention discloses a film pressing soil zone stacking and anti-blocking mechanism of a ridging and plastic film mulching machine. The film pressing soil zone stacking and anti-blocking mechanismcomprises a rack; a land axle is mounted below the rack; two sides of the land axle are provided with land wheels; the middle of the land axle is provided with a round connecting rod; the land axle isprovided with a copying cam device rotating along with the land wheels; the copying cam device is matched with one end of the round connecting rod; the other end of the round connecting rod is movably connected with a lower-piece soil dithering plate doing circular motion along with the round connecting rod; a first soil sliding hole and a second soil sliding hole are distributed in two sides ofthe lower-piece soil dithering plate; and soil is discharged from the soil sliding holes to press a film when the lower-piece soil dithering plate does not move. The soil sliding holes of the lower-piece soil dithering plate are provided with soil scrapping devices. The film pressing soil zone stacking and anti-blocking mechanism of the ridging and plastic film mulching machine, which is simple instructure and practical in function, is used for stacking soil piles with equal density and quality in a vertical direction of a mulching film when paving the mulching film.

The invention discloses a vibrating type marine hydrate pressure maintaining sampler. The vibrating type marine hydrate pressure maintaining sampler consists of a positioning mechanism, a vibration coring mechanism, a hydraulic lifting mechanism, a flushing mechanism and a pressure maintaining mechanism. Gas hydrate exists stably in the high-pressure and low-temperature sea floor and frozen soil zone, and is sensitive to temperature and pressure changes; and non-pressure-maintaining hydrate sampling can cause hydrate decomposition. Marine hydrate generally exists in pores of shallow sedimentary sandstones at the bottom of the sea, is low in degree of consolidation, is loose and easy to be washed out, and is difficult for coring. Aiming at seabed argillaceous powder sand type hydrate, in-situ pressure maintaining coring of a hydrate layer is carried out in a mode of providing power by armored cables, coring with vibration, eliminating solid phase particles with cleaning liquid and maintaining pressure by a flap valve.

The invention relates to a block stone layer slope protection roadbed with sun shading and ventilation cooling efficacy. The structure of the block stone layer slope protection roadbed is characterized in that block stone layers, earthwork clothes and rammed clays are sequentially laid on embankment slopes respectively; the particle size of the block stone layers is controlled to be 12-30cm, the thickness of each of the block stone layers is 80-120cm, and the void ratio of block stones is 25-30%; and random throwing and extrusion are carried out, and the block stone layers horizontally extend 2.0m width in the slope bottom position to form open boundaries. One earthwork cloth is laid on the slop of each of the block stone layers, clays are laid on the earthwork clothes, and ramming is carried out to realize compactness. The sunshade effect of clay layers is used to weaken the heating effect of sunshine radiation on the slopes of the roadbed; and the slope block stone layers are used to reinforce natural convection and forced convection in cold season block stone layers, so the cold energy suction capacity of the roadbed is improved, and heat in the roadbed is carried away. The heat shielding effect of the block stone layers is used in warm seasons to obstruct invasion of extraneous heat, so the heat suction capacity in the warm seasons is effectively controlled. The block stone layer slope protection roadbed realizes reduction of the temperature of overlaid soil below the slope protection roadbed, and plays a positive and great role in maintenance of long-term stability of several-years frozen soil zone roadbeds.