85 results about "Lake basin" patented technology

The invention discloses a lake water quality evaluation prediction system and method based on a factor weighting model. The method comprises the following steps: through different lake area pollution thermal graph color conditions, knowing each lake pollution contrast; through obtaining lake basin weather indexes, feeding time vector weather temperature information and each weather index to a user; displaying an accomplishment of an improved factor weighting model; and through combination with a correlation analysis algorithm, emitting an alarm to the user for each current standard-exceeding water quality index and prediction standard-exceeding indexes. According to the invention, the factor weighting evaluation model capable of more accurately evaluating water quality is established. Through numerous data tests of the model, it is proved that the algorithm operation efficiency and the water quality evaluation accuracy are greatly improved. A factor weight based evaluation model is established, a future lake water quality and environment development trend is reasonably predicted and analyzed, most visual water quality change and lake area differences can be given to the user, and water supply environment management advice is provided for sustainable development of a nine-like basin.

The invention belongs to the technical field of watershed management and provides a water environment intelligent management platform for river and lake watershed. The system combines the real-time monitoring system of multi-source data of river and lake basin, automatic data transmission, storage and intelligent analysis system, the multi-source data fusion visualization system on the same platform, aiming at realizing more comprehensive, scientific and efficient management of the water environment of the river and lake basin. The invention relates to a water environment intelligent management method of the river and lake watershed, which comprises the following steps of: real-time monitoring water quality factor, ecological factor, environmental factor, hydrological characteristic factor, building information factor and external destruction factor. Water quality factor is subjected to remote sensing inversion by multi-spectral UVA, the detecting indexes includ total nitrogen, total phosphorus, ammonia nitrogen, chemical requirement COD, chlorophyll, and the distribution of water quality is obtained by post-processing analysis. The real-time monitoring of ecological factors is toobtain orthophoto images through UAV remote sensing. The invention is mainly applied to environment monitoring occasions.

The present invention discloses a research method of trajectory design and on-site tracking and adjustment of a shale oil horizontal well, including identification and evaluation of shale oil sweet spots, optimal selection and trajectory design of the horizontal well, and on-site tracking and adjustment of the shale oil horizontal well. The “four-optimal and two-fine” practice in the research method of trajectory design and on-site tracking and adjustment of the shale oil horizontal well of the present invention lays a foundation for high and stable production of shale oil in closed lake basins and the integration of production and reserves increase. It provides a set of technical methods for the design and research of optimal selection of horizontal well locations and dynamic tracking analysis of drilling in shale oil development areas, and has great significance for reference and popularization.

The invention provides a lake basin ancient landform restoration-based quantitative method. The method comprises the following steps of 1, establishing a high-precision isochronal stratigraphic framework in a recessed area; 2, selecting a marker bed, and determining the thickness of a two-section residual stratum in the recessed area; 3, adopting the mudstone sound wave time-difference method, andcorrecting the residual stratum thickness of a target layer to be the actual stratum thickness; 4, carrying out stratum inclination angle correction; 5, subjecting the actual formation thickness of arecovery layer to de-compaction treatment so as to determine the initial deposition time thickness; 6, restoring ancient water depth values at a plurality of well points through rock core analysis and thickness measurement, and converting the thickness of the stratum into the distribution of the paleo-water-depth according to the thickness correspondence relation between the paleo-water-depth andthe thickness of the initial sedimentary period, namely quantitatively restoring the lake basin shape. According to the invention, not only the influence problem of stratum dip angle, stratum erosionand stratum compaction effect on the thickness is solved, but also the lake basin shape can be quantitatively represented. The distribution of the paleo-water-depth is quantified. The precision problem when the lake basin shape is recovered is solved. The recovery precision of the lake basin shape is improved.

The invention discloses a continental lake basin sedimentation micro-facies plane distribution map compiling method. The method comprises the following steps: 1) five-level sequence framework divisionand sedimentary boundary determination; 2) identification of the sedimentary environment; 3) determination of sediment provenance and range of influence; 4) single well sedimentation micro-facies identification; and 5) sedimentation micro-facies plane mapping. The sedimentation micro-facies spatial distribution characteristic is indicated to be expressed under the scale of the five-level sequenceframework, sedimentation micro-facies identification is faced with the problem of dominant facies selection under the three-level or four-level sequence framework and the sedimentation micro-facies identification result is difficult to be objectively mastered. The geological information expressed by all the data is fully utilized to make good for deficiency, and the key operation steps are quantified so that the standard can be established for concrete operation and the situation of influencing the analysis result because of subjective judgment can be reduced. The mapping process is industrialized, and the compiling work of multiple sedimentation micro-facies maps under the constraint of the five-level sequence framework can be completed within a short period of time through batch statistics and data processing so that seamless connection of the basic research and the production requirements can be realized.

The present invention relates to a nearshore subaqueous fan conglomerate sedimentation unit body division method. The nearshore subaqueous fan conglomerate sedimentary unit body division method under the erratic event gravity flow spin back sedimentation effect control is established, with the accurate division of a rift lake basin steep slope belt nearshore subaqueous fan conglomerate sedimentation unit body as an object, on the basis of the research of a nearshore subaqueous fan sedimentation cause mechanism and a sink sedimentation simulation experiment, nearshore subaqueous fan conglomerate sedimentation unit body division identification and classification standards are established, with the nearshore subaqueous fan conglomerate sedimentation unit body division classification standard as a guidance, the seismic data and drilling data division of a nearshore subaqueous fan sedimentation unit body is carried out, with the seismic data and drilling data division of the nearshore subaqueous fan sedimentation unit body as a basis, with single well time-depth relation as a constraint, the crosswell comparison of the nearshore subaqueous fan sedimentation unit body is developed, the accurate identification and division of the rift lake basin steep slope belt nearshore subaqueous fan conglomerate sedimentation unit body are carried out, the nearshore subaqueous fan conglomerate sedimentation unit body can be accurately and effectively divided, and the spatial distribution range is determined.

The invention provides a preparation method of a wetland plant and pig manure composite biochar, and an application of the composite biochar in the adsorption of heavy metals in water. Typical wetlandplants of Poyang Lake are selected, the aerial parts of the wetland plants are harvested in the growing season, pig manure is obtained from a pig farm, the collected wetland plant biomass is washed with water, dried and crushed, the pig manure is dried and crushed sequentially, and the plant biomass and pig manure biomass are mixed according to a ratio 1:1 to form a mixed biomass; chitosan and alkali residues are dried, and are crushed and mixed according to a mass ratio of 1:1; the mixed biomass and the obtained chitosan and alkali residue powder are mixed according to a ratio of 10:1 to prepare a composite biomass; and the composite biomass is added to an iron solution, anaerobic hydrothermal carbonization is carried out to form the composite biochar, and the composite biochar is used for adsorbing heavy metals in water. The preparation method fully utilizes several typical wastes in the Poyang Lake basin, achieves the purpose of treating pollution with wastes, and also has the advantages of wide sources of raw materials, low cost, simplicity, and easiness in operation, and the prepared biochar adsorbent is nontoxic and harmless, and is friendly to the environment.

The invention provides a method for identifying a rift lake basin steep slope zone nearshore subaqueous fan sedimentary facies belt, which comprises the steps of 1, acquiring seismic data of a block,conventional well logging data of a drilled well and well logging lithologic data; 2, determining single well sedimentary facies by using single well synthetic record calibration; 3, summarizing seismic facies characteristics of the nearshore subaqueous fan sandstone rock through a well-tie seismic section according to each single well synthetic record calibration; 4, identifying a sedimentary facies belt interface according to the seismic facies characteristics of the nearshore subaqueous fan sandstone rock; 5, dividing the sedimentary facies belt interface; and 6, determining planar distribution of the nearshore subaqueous fan sandstone rock sedimentary facies belt according to the combination of the seismic section and a well-tie sedimentary facies contrast section. The method for identifying the rift lake basin steep slope zone nearshore subaqueous fan sedimentary facies belt identifies a sandstone rock sedimentary facies belt through combining well drilling and seismic facies characteristics, is simpler and more convenient than a test method, and is more accurate and reliable than an empirical method.

The invention discloses a logging quantitative recognition method for gravity flow sediments in a down-warped lake basin and belongs to the technical field of recognizing gravity flow sediments. According to the technical scheme of the invention, firstly, with the observation on the core of a cored well, the identification of an indoor rock slice and the logging information as a basis, the type recognition, the summarization of lithological characters and the summarization of sedimentary tectonics are conducted. After that, according to the geological thought that indirect data (the logging information) are calibrated based on direct data (the rock cores of different types of gravity flow sediments), logging suites of good response performances for different types of gravity flow sediments are preferably adopted through the data mining approach. In combination with the macroscopic and microscopic analysis on the rock cores of different types of gravity flow sediments, a logging response standard for different gravity flow sediments and deep-lake mudstones is established. Finally, the above method is verified based on the cored well. The established recognition method is good in quantitative recognition effect for gravity flow sediments in a research area and can also be applied to other areas.

The invention relates to the technical field of paleoenvironment recovery, and specifically relates to a quantitative recovery method and apparatus for a paleo-water depth. The method comprises the following steps: determining a beach and dam development region in a research layer of a paleo lake basin; determining a single-point paleo-water depth of at least one typical well in the beach and dam development region; determining a Th content and a U content in the at least one typical well in the beach and dam development region, and according to the Th content and the U content, calculating a ratio of the Th to the U; according to the single-point paleo-water depths of all the typical wells and the Th/U ratio corresponding to positions of the single-point paleo-water depths, fitting a relation equation between the single-point paleo-water depths and the Th/U value, and recovering quantitative paleo-water depths of the typical wells; and according to the relation equation between the single-point paleo-water depths and the Th/U value, recovering quantitative paleo-water depths of other wells in a non-beach-dam development region in the paleo lake basin. Through the method, continuous quantitative paleo-water depth data of water body depth vertical and planar change of the paleo lake basin in the same deposition period can be obtained.

The invention provides a method and device for obtaining a growth law and a sedimentary model of a shallow water lake basin delta. The method comprises the steps that multiple time-phase remote-sensing images with certain time spans are obtained, and the time-phase remote-sensing images are combined and preprocessed; the water levels of the combined and preprocessed time-phase remote-sensing images are classified, and the time-phase remote-sensing images with the same water level class are selected to be analyzed; when the water levels of the selected time-phase remote-sensing images are the same, synchronous field sedimentary inspection is conducted, and various kinds of sedimentary microfacies recognition templates of the shallow water lake basin delta are built; according to the various kinds of sedimentary microfacies recognition templates of the shallow water lake basin delta, global-scope sedimentary microfacies explanation of the whole shallow water lake basin delta is conducted on the time-phase remote-sensing images with the same water level class, and multiple time-phase interpretation vectors are obtained; according to the multiple time-phase interpretation vectors, remote-sensing quantitative analysis is conducted on growth factors of the whole shallow water lake basin delta; according to the analyzed result, the growth law and the sedimentary model of the shallow water lake basin delta are obtained.

The invention discloses a primer and method for detecting leuciscus waleckii in the Dalai Nur lake basin and relates to a primer and method for detecting the leuciscus waleckii. The primer for detecting the leuciscus waleckii in the Dalai Nur lake basin is a pair of microsatellite marker primers. A forward primer nucleotide detection sequence is shown as SEQ ID NO:1 and a backward primer nucleotide detection sequence is shown as SEQ ID NO:2. The method for detecting the leuciscus waleckii in the Dalai Nur lake basin comprises the steps that 1, the DNA of a sample is extracted; 2, PCR amplification is conducted; 3, gel electrophoresis is conducted on the capillary tubes, a sample fish with a 148bp stripe amplified is the leuciscus waleckii in the Dalai Nur lake basin, and if not, the sample fish is not the leuciscus waleckii in the Dalai Nur lake basin. The primer and method can be applied to the fields of fishery detection and animal resource protection.

The invention relates to a reconstruction method for large-sized aquatic plants; particularly, oxygen-containing soil is used for coating sprouts of submerged plants for the restoration of the submerged plants on polluted bottom sediment. Nitrogen, phosphorus and organic matters are removed from soil in a lake basin, and load oxygen of a solid-liquid interface serves as a coating agent through oxygenation treatment, so that the oxidation-reduction environment of the bottom sediment can be improved, the oxygen content of a bottom-layer water body can be improved, and a growth microenvironment independent from the bottom sediment is provided for the sprouts of the submerged plants; the coating agent slowly releases oxygen at the initial stage of the seed germination through different oxygenation methods such as homogenate aeration of the soil at low temperature, the mixing of the soil and oxygen-containing water and the like, so that sufficient oxygen is provided for the sprouts without leading to damage on the plants; clay minerals such as sepiolite, diatomite and the like are added in the coating agent, so that the porosity of rhizosphere can be increased, and the flow of oxygen surrounding the rhizosphere can be improved; and the coated sprouts of the submerged plants can resist against the influence of external disadvantages by the action of the coating agent; therefore, germination, growth and colonization can be quick, and the purpose of reconstructing the large-sized plants is finally achieved. Compared with the prior art, the technology needs low cost, is easy to operate and does not lead to secondary pollution and ecological risks.

The invention discloses a method for evaluating formation and evolution of continental facies shale oil of a large freshwater lake basin, which is used for evaluating shale oil content recovery, a longitudinal dessert layer and a planar dessert area by utilizing a method of combining conventional core taking and geological experiment analysis of drilling, pressure-maintaining closed coring, frozensample oil content calibration and a logging technology. A continental facies shale oil formation and evolution evaluation mode is established by utilizing parameter indexes such as depth, Ro, kerogen, chloroform asphalt A, free oil quantity, absorbed oil quantity, gas-oil ratio and the like, so requirements of shale oil exploration are met. The method comprises the following steps of evaluatingthat a large amount of absorbed oil is converted into free oil at Ro1.1%-1.6%, the method is the most favorable stage of shale oil formation, the shale oil in the maturation and high maturation stagesis 1.5-3.5 times of that in the classic oil production mode, the optimal selection and exploration breakthrough of the shale oil dessert in the Songliao basin are guided, the exploration depth can beexpanded to 2600 m, the area of the dessert area is expanded by 1.2 times, and a material foundation for large-scale exploration of the continental facies mud shale oil in the large-scale freshwaterlake basin is laid.

The invention provides a mud shale pulveryte facies research method. The mud shale pulveryte facies research method comprises the steps of 1, determining a mud shale pulveryte facies division scheme adopting combination of three elements including rock components, a structure and organic matter content; 2, building a mineral component, organic matter and structure well logging identification model; 3, according to the well logging identification model built in the step 2, performing well logging model identification on a segmented mud shale facies type of a single well in a research area; 4, performing restriction and correction on the mud shale facies type identified by the well logging model; and 5, performing full-area mud shale pulveryte facies identification and distribution law research. The mud shale pulveryte facies research method improves the precision of mud shale pulveryte facies prediction and lays a solid basic theoretical basis for shale oil and gas exploration and development of land facies fault lake basins.

The invention provides a reference lake quantitative determination method based on human disturbance intensity. The reference lake quantitative determination method based on the human disturbance intensity mainly includes: 1) in a target area, determining candidate reference lakes in the area, applying a principal component analysis method to determine human disturbance intensity indexes of lake basins, and establishing an evaluation index system and grade standards of the candidate reference lakes; 2) determining evaluation index weight, comparing importance of evaluation indexes of the candidate reference lake in pairwise mode, establishing a fuzzy complementary judgment matrix A based on a hierarchical structure, and performing consistent judgment on the matrix A, wherein the matrix A=(aij) 6*6, and 0<=aij<=1, aij+aji=1; 3) calculating single index connection degree between the candidate reference lakes and evaluation grades and comprehensive connection degree between the candidate reference lakes and the evaluation grades by using a set pair analysis method under the evaluation indexes of the candidate reference lakes; and 4) evaluating grades of the candidate reference lakes, and determining the reference lakes. The reference lake quantitative determination method based on the human disturbance intensity has important and real meaning for quantitative selection of the reference lakes and protection, evaluation and management of lakes.

A lake basin hydro-ecological function three-level zoning method comprises: selecting a set of lake basin hydro-ecological function three-level zoning indexes, dividing a target basin DEM as a base map into zoning function units through hydrological analysis, spatially discretizing the zoning indexes on the zoning function units, and combining the similar hydro-ecological zoning function units with a second-order spatial clustering analysis method in combination with a lake basin hydro-ecological function two-level zoning boundary to preliminarily form a hydro-ecological function zoning draft; performing zoning check by utilizing hydro-ecological survey data, and adjusting the zoning indexes according to a zoning check result to correct the zoning draft; and finally determining a hydro-ecological function zoning boundary and making a lake basin hydro-ecological function three-level zoning map.

The present invention discloses a plant colony optimization method capable of improving a Dianchi Lake basin forest land water source conservation capability. Indigenous tree species occupy a large part, arbors are not lower than 1.5m and shrubs are not lower than 0.2m. Under the condition of not damaging previous vegetations, the arbors are replanted in a distance 0.6m far away from the roots of the arbors, and the shrubs are replanted in a mutual distance of 0.2m to form a compound vegetation system matching the arbors and the shrubs. A land with the gradient smaller than 25 degrees is prepared in a hole-shaped manner; and a land with the gradient more than or equal to 25 degrees is prepared in a fish-scale pit manner and the depth is 0.3m. In rainy seasons, nursery-grown plants are put by adopting a seam planting method. After the plants are planted, surrounding shrubs are properly cultured in a light transmitting manner, and trimmed branches and leaves are dispersed and paved on a forest land, and the process is continued for 3 years and is carried out once every year. At the second year after replanting, the forest land with the conservation rate not reaching 85% is replanted. The plant colony optimization method disclosed by the invention has the beneficial effects that the interception of canopy classes can be improved, litter layers and soil layers keep moisture, the direct surface runoff is reduced, and the water source conservation capability is improved.

The invention relates to a water environment safety regulation and control model dynamic integration method and assembly based on WebService. The method is based on the WebService technology of cross-programming language and cross-operating system platform. A model integration interface is designed, and a data layer-supporting layer-application layer three-layer architecture organization is adopted; calling, linkage calculation and operation state real-time interaction of a water environment safety regulation and control model are achieved; effect evaluation after Taihu lake river network water environment safety regulation and control is achieved. The problems that model research and development environments are different, platform integrated code rewriting workloads are large, models cannot be called remotely, multiple models cannot run at the same time, and model calculation results cannot interact with a platform in real time are solved. The model in the method is suitable for allmodels in the field of water environment safety regulation and control, through dynamic integration of the water environment safety regulation and control model based on WebService, the cooperative computing efficiency of a business platform is improved by 20% or above, and the scientificity of a water environment safety regulation and control decision of the Taihu Lake basin is greatly improved.

The invention provides a shallow lake basin reservoir prediction method and device based on micro-ancient landform recovery, and the method comprises the steps: determining the position of a shuntingriver through the research of the micro-ancient landform recovery and earthquake facies of a target stratum series shallow lake basin; according to the deposition compensation principle, performing micro-ancient landform recovery, and determining the distribution mode of the diversion riverway; determining reservoir distribution characteristics in the shallow water lake basin of the target stratumsystem according to the distribution mode of the diversion riverway and the recovery of the micro-ancient landform; determining wave impedance attributes capable of quantitatively characterizing reservoir distribution characteristics; performing wave impedance seismic waveform indication inversion according to the determined wave impedance attribute; and slicing the inversion data volume to obtain a plurality of stratum slices so as to determine a deposition system and reservoir change of a target stratum series shallow water lake basin. By means of the scheme, the problem that the predictionresult is inaccurate when the shallow lake basin is predicted only through seismic data is solved, and the technical effect of accurately determining the reservoir distribution and development degreeof the shallow lake basin is achieved.

The invention provides a continental lake basin tight reservoir pore throat effectiveness quantitative evaluation method under geological conditions. The method comprises the following steps: establishing a relational expression between nuclear magnetic resonance signal intensity and porosity; measuring a T2 spectrum of a to-be-measured reservoir rock core after saturated water treatment in a normal-pressure environment; sequentially applying confining pressure with different pressure values to the to-be-measured reservoir rock core after saturated water treatment to simulate the pressure-bearing change condition of a rock pore structure in the stratum burying process, and respectively measuring T2 spectra of the to-be-measured reservoir rock core after saturated water treatment under theconfining pressure with different pressure values; and according to the measured T2 spectra and the established relational expression between the nuclear magnetic resonance signal intensity and the porosity, determining the pore diameter-porosity distribution of the to-be-measured reservoir rock core under different pressure values, and quantitatively evaluating the change of different-scale effective pore throats of the tight reservoir under geological conditions, thereby realizing the quantitative evaluation of the effectiveness of different-scale pore throats of the continental lake basin tight reservoir under geological conditions.