166results about How to "Lower the water table" patented technology

The invention relates to the technical field of severe saline-alkali soil greening, in particular to a method suitable for directly planting macrophanerophyte in natural soil of coast silt severe saline-alkali soil of which 1 m soil body contains more than 2.0 percent of total salt. The method comprises the following steps: building a burrock-type platform field through drainage trenching; paving a water supplying pipeline; broadcasting phosphogypsum and humic acid; then broadcasting semi-decomposed maize straw manure for soil amelioration; conducting mechanical deep tillage and land leveling; paving water seepage pipes; leaching salt through fresh water; electing a macrophanerophyte type; planting. According to the invention, the physical chemical property of the soil is improved through 'soil amelioration, fertilization and deep tillage', so that soil leaching is accelerated while the soil is fertilized. Therefore, a soil ecological environment suitable for tree growth is formed gradually, and lasting greening is further realized. Compared with the greening method in which the ground is elevated through soil dressing, the method has the advantages that cost is reduced; the macrophanerophyte survival rate is higher than 95 percent; low-cost lasting greening of severe saline-alkali soil is realized in very deed; the economic benefit and ecologic landscape of severe saline-alkali soil greening are improved remarkably.

The invention discloses a method for planting cotton in coastal heavy saline-alkali land. The method comprises the following steps of: A, consolidating land, and building a strip field or a platform field; B, irrigating by using saline water in winter and icing; C covering by using a mulching film; D, sowing; E, performing growth period management; and F, picking in time after cotton bolls are fully cracked and opened. In the method, a series of measures such as land consolidation, icy irrigation of saline water in winter, ice melting spraying of saline water in spring, salt inhibition and soil moisture conservation through mulching film coverage and the like are adopted, so that the salt content of soil in cotton root layers is reduced, and the normal growth of the cotton is ensured; and the method is easy to operate and low in cost, can be applied to coastal saline and alkaline areas, and has remarkable economic, social and ecological benefits.

This invention relates to a device in hydraulic engineering groundwater extraction, especially a spontaneity underground reservoir of water corridor. There is vertical well in sand stone. Collecting tunnel and diversion tunnel located in the groundwater below the water makes the vertical wells connect from one another. The direction of diversion tunnel is the same to the terrain slope. The diversion tunnel makes the water of vertical well out of the ground. This invention can replace small river valley emerges surface reservoir functions, storing basin of water, so that the groundwater basin rational allocate its resources, its quantity, water wide range of low-cost water, reducing water evaporation. This invention can directly get water in deep coverage river bed, and is appropriate to get water in mountain underground water reservoir.

The invention relates to the technical field of agricultural production, and particularly provides a coastal heavy saline-alkali land potato high-yield cultivation method. According to the coastal heavy saline-alkali land potato high-yield cultivation method, a series of technical measures including ditching for a raised field, basin irrigation, additional organic fertilizer application, ridging, film covering, seeding, under-film adjustment acid drip irrigation and the like are adopted, a high yield of potatoes in a coastal heavy saline-alkali land is realized. The coastal heavy saline-alkali land potato high-yield cultivation method has the advantages that through the ditching for the raised field, the underground water level can be lowered; through the basin irrigation, salt materials in soil can be subjected to leaching; through the additional organic fertilizer application, soil fertility can be enhanced, and soil microbial communities are increased; through the ridging, the film covering and the under-film adjustment acid drip irrigation, the salt materials on ridges are further subjected to the leaching, evaporation is reduced, and the surface aggregation property of the salt materials is eliminated; and irrigation water is used for adjusting potential of hydrogen, an environment more suitable for growth of the potatoes can be created, and disease occurrences can be reduced, and therefore the high yield of the potatoes in the coastal heavy saline-alkali land is realized.

The invention belongs to the field of crop planting, in particular to a high-efficiency corn cultivation method in saline-alkali land. The high-efficiency corn cultivation method in the saline-alkaliland includes the following specific cultivation steps: soil improvement, flat land preparation and application of base fertilizer, corn sowing and film covering, irrigation and fertilization. The method achieves the aim of improving corn emergence rate, seedling preservation rate, water and fertilizer utilization efficiency and further improving corn yield by improving the corn planting method and optimizing the irrigation and fertilization system, breaks through the technical bottleneck of difficult corn planting and improvement in saline-alkali land in low-lying areas, and can play a technical supporting role in efficient improvement and utilization of saline-alkali land and improvement of ecological environment. On the one hand, ridge film furrow planting can effectively reduce the evaporation and consumption of soil moisture, and thus water collection and moisture preservation are favorable, so that crop yield and water use efficiency are improved; on the other hand, the utilization of groundwater can be further promoted, the groundwater level is lowered, and the phenomenon of soil salinization is reduced.

The invention relates to the technical field of drainage of low-permeability geotechnical engineering, in particular to a permeation increase siphon drainage system for a low-permeability soil slope. The permeation increase siphon drainage system is especially suitable for engineering drainage of low-permeability-coefficient water-rich strata. The permeation increase siphon drainage system is composed of a water-permeable concrete fracturing injection system and a siphon drainage system body. For the loess slope with low permeability and collapsibility, water-permeable concrete is pressed into the loess slope with low permeability, a high-permeability network channel is formed, and the range of influence that a cone of depression is generated by a single siphon drainage hole is widened. By means of a high-permeability water-permeable network, the drainage efficiency is increased; based on the high-lift siphon principle, redundant underground water in the slope is automatically and efficiently drained in real time, the underground water level of the slope can be controlled to be blow the safety water level, and no external power is needed; and the beneficial effects of being low in manufacturing cost and high in efficiency are achieved.

The invention relates to a method for constructing a prestress anchor rope anti-skid tunnel on a thicker layer landslide. The method comprises the following steps: carrying out on-site investigation, examination and engineering geologic investigation of the thicker layer landslide; confirming corresponding situation like the slip surface position of the thicker layer landslide and the like; calculating through the landslide thrust; carrying out the prestress anchor rope anti-skid tunnel design prior to the space position laid out by the prestress anchor rope according to the landslide thrusting force under the most unfavorable load assembling conditions; constructing from both sides of the landslide body section by section, and minimizing the section length; casting a rib post and a ground beam of reinforced concrete in place on the mountain side of the tunnel and the ground, and casting linings of the reinforced concrete in place at other positions; laying out the prestress anchor rope on the rib post and the ground beam, and making the anchor rope pass through the mountain landslide surface. An anchor is fixed in the stable and hard terrane. The top arc of the tunnel is provided with a water draining hole, and the bottom is provided with a drainage ditch. The construction method can improve the stability of the thicker layer landslide and has the advantages of economy, expeditiousness, convenience and safety.

The invention discloses a fill channel anti-frost heaving and anti-seepage structure and a construction method. The structure is characterized in that drainage channels are arranged on the two sides of the channel; a wind-blown sand layer is arranged on the bottom and two sides of an embankment of the channel; a plastic film is arranged on the wind-blown sand layer; a slope toe on a connection position of the bottom and the embankment of the channel is cast-in-place concrete; prefabricated concrete blocks are laid on the plastic film; and a capping concrete board is arranged on the top of the embankment of the channel. The construction method comprises the following steps: digging a drainage open channel; clearing channel base earth; carrying out filling to form the embankment of the channel; laying wind-blown sand; laying the plastic film; casting the arc channel-bottom concrete in place; laying the prefabricated concrete blocks; and laying the capping concrete board. The problems of the common channel design such as seepage, frost heaving and destruction, and not stable quality are eliminated, the wind-blown sand layer is arranged on the bottom and the two sides of the embankment of the channel, the foundation bearing force is increased, the frost heaving is lightened; the polyethylene plastic film is laid on the wind-blown sand layer to prevent seepage of the channel; concrete is arranged on the film to prevent water flow from scouring and seeping; the concrete arc channel bottom is cast in place, the stress condition is good and the stress concentration is prevented; and the drainage open channel prevents underground water retention and eliminates frost heaving.

The invention discloses a draining and salt-removing method for a newly-ploughed salinized farmland, comprising the following steps of: making a simple farmland concealed pipe by utilizing a building PVC (Poly Vinyl Chloride) sewer pipe, uniformly drilling holes with the diameter of 3mm on the wall of a 100mm plastic sewer pipe by the punching rate of 75 percent, coating two to three layers of crude chemical fiber outside the wall of the pipe, and strapping with plastic ropes; digging several rows of concealed pipe ditches in the newly-ploughed salinized farmland, wherein the depth of the concealed pipe ditches is 1.5-2.0m, the bottom width is 30cm and the specification of the side slope is 1:0.5; paving plastic weaved cloth with the width of 40cm at the bottoms of the ditches, paving sand gravel with the thickness of 15cm on the plastic weaved cloth, paving a coated concealed pipe, paving and spreading sand gravel with the thickness of 15-20cm at the surrounding and the upper part of the concealed pipe, paving the plastic weaved cloth with the width of 40cm on the sand gravel and refilling. The invention mainly solves the technical problem of draining by the concealed pipe in the newly-ploughed salinized farmland in aired regions and has a wide application value on the aspects of prevention and control of salinization and secondary salinizaiton of farmland in the dried regions, reformation and utilization of the farmland in the dried regions as well as prevention and control of desertification.

The invention discloses a high-ridge cultivation method of high-yield and high-quality kiwifruit orchard establishment and relates to the field of kiwifruit orchard establishment and soil amelioration. The high-ridge cultivation method comprises the steps of (1) clearing away ground foreign matters and leveling the land parcel, (2) spreading a soil amelioration to the ground, (3) deeply turning up the soil by 50cm, (4) marking lime lines according to one half of a line spacing, starting from the edge, (5) ridging, (6) planting seedlings and (7) performing later maintenance and management. The high-ridge cultivation method of high-yield and high-quality kiwifruit orchard establishment has the following advantages: the soil layer is raised to reduce the risk that the root system suffers from water logging; the mellow soil of the original surface layer is gathered and piled up to facilitate rapid growth of the root system; coarse organic matters and organic fertilizers are added in the soil amelioration process to increase the organic substances and the permeability of the soil; the high-ridge cultivation method is suitable for a plurality of types of soil, in particular heavy soil of a high underground water level, and for sandy soil, the vertical height from the ridge top to the ridge bottom can be reduced appropriately.

The invention discloses a north coastal region saline soil irrigation method and system in winter. The north coastal region saline soil irrigation method in winter comprises the following steps of 1) digging a well; 2) pumping saline groundwater from the well and storing the pumped saline groundwater through a storage reservoir; 3) freezing the pumped saline groundwater in the step 2) into ice under the natural condition; 4) covering the frozen ice blocks in the step 3) on the surface of the soil to form into an ice coating irrigation layer; 5) pumping unfrozen saline water under the ice layer in the step 4) from the storage reservoir; 6) pumping the saline groundwater from the well and storing the saline groundwater into the storage reservoir when the natural condition changes and the ice coating irrigation layer starts melting; 7) repeating the step 2) to the step 6) and achieving north coastal region saline soil irrigation in winter. The north coastal region saline soil irrigation method in winter has the advantages of fully utilizing saline water sources, reducing exploitation of deep fresh groundwater and being benefited to reduction of the underground water level and restriction of accumulation of salt in the surface deep soil.

The invention discloses a method for transplanting arbor in saline-alkali soil. The method for transplanting arbor in saline-alkali soil comprises the following steps of: (1) surveying and setting out; (2) cutting tree roots and shaping and pruning tree crowns; (3) wrapping trunks; (4) digging earth-balls, modifying lumps, tidying bottoms and packaging; (5) loading, unloading and transporting trees; (6) starting digging tree pits; (7) laying and arranging an isolation layer, a water permeable pipe and an exhaust pipe; (8) back filling the tree pits with planting soil; (9) covering the tree pits; and (10) conducting post-conservation and management of the trees. According to the method for transplanting the arbor in the saline-alkali soil, not only can returning of saline and alkali be controlled, the groundwater level can be reduced, but also a comfortable growth environment can be provided for the transplanted large-scale arbor so that the arbor can be prevented from invasion of the saline and alkali; besides, the soil of the saline-alkali soil can be improved locally, so that the growth of plants and the continuous improvement of the soil quality of the saline-alkali soil are facilitated.

The invention relates to a device and an implementation method thereof, in particular relates to a rock foundation small guide pipe partial water level lowering device and an implementation method thereof. The rock foundation small guide pipe partial water level lowering device is characterized in that a PVC (Polyvinyl Chloride) water filter pipe is connected with a PVC connection pipe, wherein the PVC connection pipe is connected with a steel guide pipe; the steel guide pipe is connected with an annular water stopping steel plate; rubber water discharging pipes are inserted into pipes for connecting the steel guide pipe, the PVC connection pipe and the PVC water filter pipe. With the adoption of the technical scheme, the rock foundation small guide pipe partial water level lowering device has the advantages and active effects that the operation is simple, the construction is convenient, the technical difficulty is low, the pertinence on water precipitation and drainage regions is strong and the arrangement is flexible; the cost is low, natural drainage is realized by sufficiently utilizing underground water, and the energy source consumption is reduced; the underground water level can be effectively reduced, a foundation keeps dry and the construction of other procedures is not influenced; a foundation working surface can be more rapidly provided and the engineering progress is effectively promoted; the construction quality is guaranteed and the engineering cost is reduced.

The invention discloses a method for banking with silt filled geotextile bags, and relates to dike construction. Silt, the geotextile bags, plastic drainage plates and precipitation wells are used for constructing a dike; the method is characterized in that the content of particles of which the particle size is greater than 0.075mm in the silt do not exceed 50 percent of the total mass; side faces of the geotextile bags are made of composite geotextiles, and upper and lower surfaces of the geotextile bags are made of woven fabrics; two sides of the dike are provided with prisms formed by the geotextile bags filled with silt, silt is filled in the middle of the dike to form a core, and the horizontal plastic drainage plates are buried among the silt filled geotextile bags to form a horizontal drainage channel; during construction, the silt in a borrowing area is borrowed and filled to the core by a hydraulic fill process, and the silt is taken from the core to fill the geotextile bags to form the bagged silt prisms; after the silt is filled to the core, the precipitation wells and low-energy-level dynamic consolidation are adopted, the drainage consolidation of the silt filled core is quickened, and the compactness and the bearing capacity of the core are improved. The method is suitable for causeway, cofferdam, revetment, approach bank, breakwater, seawall, embankment construction.

The invention discloses a whole-course wheat mechanical planting method. The method comprises the following steps that a good variety is selected, and a proper number of seeds are sown in proper time; a proper machine type is selected, and the seeding quality is improved; a standard channel is established, and four-channel matching is guaranteed; soil testing and fertilizer recommendation are carried out, and balanced fertilization is emphasized; chemical regulation is well done, and field weeds are prevented and removed; the diseases and pests are comprehensively controlled; mechanical harvesting is carried out. According to the purpose method, wheat growth can be promoted through chemical seed dressing, tillering is enhanced, and the disease resistance is improved. Mechanical seeding is carried out, seeding is uniform and consistent, seedling emergence is neat, the growth vigor is consistent, and the high yield of wheat is facilitated. Four-channel matching is carried out, the field underground water level is reduced, the root system of the wheat is prosperous, and increase of the yield is promoted. The whole-course mechanization is carried out, labor intensity is lowered, labor cost is reduced, and the land benefit is increased.

The invention discloses a regional water and soil environment comprehensive treatment method. The method comprises the following steps that an underground water level regulation and control system isconstructed based on a water circulation process under a to-be-treated region, a regional rain flood reduction system is constructed on the surface of the to-be-treated region, and combining the underground water level regulation and control system based on the water circulation process and the regional rain flood reduction system, water and soil environment of the to-be-treated region is subjected to isolation protection and permeation enhancing treatment. According to the method, by constructing a seepage intercepting ditch and laying a drainage underground pipe, the underground water levelis lowered, the region soil salinization trend is blocked, the region water and soil environment is improved, the sustainable development capacity of the to-be-treated region is enhanced, meanwhile, the water resource quantity increased in an underground water level regulation and control process is utilized for replenishing ecological water for the to-be-treated region, and the region ecologicalwater available amount is increased.

The invention discloses a film mulching and irrigation method for saline-alkaline land in Yellow-river irrigating region. In detail, the film mulching and irrigation method comprises the steps of 1) leveling the land and ditching; 2) laying irrigation system; 3) sowing crop and salt-adsorbing plant in interval; 4) mulching film; 5) making up drip irrigation liquid and dripping; 6) managing field and preventing diseases and pests until harvest. The method uses special methods of ditching, pipe laying, sowing, film mulching and irrigation. The method can not only control the stalinization of saline-alkali land in Yellow-river irrigated region effectively, but also guarantee the normal growth of crop in the condition until harvest. The method provides new thought and new method for the effective application of saline-alkaline land in Yellow-river irrigated region.

The invention discloses an information intelligent monitoring system based on an irrigation district and a method thereof, and belongs to the technical field of irrigation district engineering. The method mainly comprises the following steps: information collection: the information of discharge and water level of the irrigation channel is collected on the irrigation district canal; the informationof gate position is monitored; the information of water charge and irrigation operation is collected in real time; the gate monitoring system on the canal is monitored on real time and the video monitoring information is obtained; Information transmission: the irrigation business data, water charge information, flow information, water level information, gate location informationestalish a communication connection with the information collection platform through the Internet network; Information management: the information collection platform stores the discharge information, water level information, sluice location information, water charge information, irrigation business data and video monitoring information in the comprehensive database of irrigation districts; Information collection platform for the application of various information and data; In order to improve the engineering standards of irrigation districts, improve the matching of irrigation districts, improve the results ofmanagement means, is conducive to overcoming the current negative environmental impact of irrigation districts.

The invention relates to a dome repairing method that drills some deep holes on the dome by jack hammer or drilling machine, adds mixture vegetation in it and plants climbing plant on it, and uses the haulm of the plants to cover the dome. The method has little engineering work load, and the nutritive layer is not easy to be swept away, and it could also fix the dome.