811 results about "Deep water" patented technology

The invention is suitable for the technical field of multi-source data processing, and provides a water body adaptive extraction method based on multi-source remote sensing data fusion, and the method comprises the steps: obtaining multi-source data of a target region, constructing an improved water body index based on optical remote sensing image data, and enhancing the spectral separation degree of a deep water region and a shallow water region; constructing a scattering feature distinguishing rule set based on synthetic aperture radar image data, and separating a water body from typical interference ground features; generating a terrain gradient constraint condition based on the digital elevation model data; generating a fusion data set according to the improved water body index, the scattering feature distinguishing rule set and the terrain gradient constraint condition; dynamically segmenting the fused data set through an adaptive threshold segmentation algorithm to obtain an initial water body extraction result; and performing mixed pixel decomposition and morphological boundary optimization processing on the initial water body extraction result to generate an optimized result, and outputting a water body spatial distribution diagram, thereby effectively improving the water body extraction precision, the adaptability to complex scenes and the anti-interference capability.

The utility model discloses a water depth adjusting device of a test pool, and relates to the technical field of deepwater test pools. Comprising a floating bottom body, a lifting mechanism, a jacking device and a distributed detachable platform, each lifting mechanism comprises a winch, a steering pulley and a steel wire rope, one end of the steel wire rope is connected with the winch, and the other end of the steel wire rope bypasses the steering pulley at the bottom of the deepwater experiment pool and is connected with the floating bottom body; the jacking device comprises an air cylinder, a connecting shaft, a guide wheel and a base, the air cylinder located on the base is connected with the guide wheel through the connecting shaft, and the guide wheel is connected with the guide sliding groove of the floating bottom body in a clamped mode; the jacking devices are symmetrically arranged on the two sides of the floating bottom body. The distributed detachable platform is laid on the floating bottom body through the connecting support. The device can meet the water depth requirement in an ocean engineering experiment, meet the ground elevation requirement in a civil engineering experiment and a wind tunnel experiment, and meet the requirement that the floating bottom does not move, rotate or get stuck in the operation process of experimental equipment.

The invention relates to the field of oil and gas reservoir drilling, and provides a borehole wall stability analysis method for a deepwater shallow long horizontal well, which comprises the following steps: carrying out mechanical parameter test on a weakly cemented rock sample to obtain basic mechanical characteristic parameters; performing time-varying strength modeling on the weak cementation constitutive structure to obtain a damage evolution model; performing three-dimensional finite element modeling on the stratum around the borehole to obtain a numerical calculation model; establishing a control equation set, and discretely solving the control equation set through the numerical calculation model to obtain a field variable solving result; and well wall stability analysis is carried out based on the field variable solving result, and an analysis result is obtained. According to the method, the well wall stability prediction precision of the deep-water shallow-layer long horizontal well is improved, and the safety of well drilling is improved.

A floating power-generation group comprises a floating hub such as a spar buoy that is anchored to subsea foundations by anchor lines. Floating power producer units such as wind turbines are connected electrically and mechanically to the hub. The power producer units are each moored by mooring lines. At least one mooring line extends inwardly toward the hub to effect mechanical connection to the hub and at least one other mooring line extends outwardly toward a subsea foundation. The groups are combined as a set whose hubs are connected electrically to each other via subsea energy storage units. Anchor lines of different groups can share subsea foundations. The storage units comprise pumping machinery to expel water from an elongate storage volume and generating machinery to generate electricity from a flow of water entering the storage volume. The pumping machinery can be in deeper water than the generating machinery.

The application provides an underwater broken stone base leveling device and a leveling method thereof, which comprises a ship body, the bottom of the ship body is provided with a leveling device, the leveling device comprises an outer frame, outer support leg oil cylinders are arranged at four corners of the outer frame, a sliding leveling mechanism is arranged on the outer frame, inner support leg oil cylinders are arranged at four corners of the leveling mechanism, and an elevation adjusting oil cylinder is arranged at the top of the leveling mechanism. The leveling device is automatically adjusted to be in a horizontal state, then the height of the outer frame is measured, the leveling head is automatically adjusted to a required height according to a set leveling thickness, the movement of the propelling oil cylinder is controlled, the leveling head is leveled at one station of the frame of the support, the walking type advancement of the leveling robot is realized through the interactive support of the four outer support leg oil cylinders and the four inner support leg oil cylinders, the overall device utilizes the fusion and coordination of multiple sensors, the automatic leveling of the underwater broken stone outer frame can be realized, the overall device is automatically leveled, and the problems that the traditional method is difficult to adapt to deep water and has low construction efficiency are overcome.

The utility model relates to a water quality advanced treatment device, which is provided with a reactor and a filtering device, the effluent of the reactor is connected to the water inlet of the filtering device, the reactor is provided with a reactor shell for accommodating water, an electrode for electrochemical reaction is arranged in the reactor shell, and the water outlet of the reactor is connected to the water inlet of the filtering device. The reactor is characterized in that a plurality of graphite nodules are further arranged in the reactor shell, a reflux pump is arranged in the reactor shell and used for reflux circulation of water in the reactor shell, a filter separation net is arranged at the bottom in the reactor shell, the baffle plate is located above the filter separation net, an inlet of the circulating pipe is located below the filter separation net, and an outlet of the circulating pipe is located below the filter separation net. And a filtering layer is arranged in the filtering device. According to the utility model, the reaction capacity of the electro-catalytic reactor is improved, the preparation cost and the operation cost of the reactor are reduced, and effluent with high purification degree is obtained.

The invention discloses a steel wire rope splicing device and method for deepwater salvage, and relates to the technical field of salvage and salvage of offshore sunken ships, the steel wire rope splicing device comprises a sunken ship, a crane ship and a crane installed on a deck of the crane ship, a stern side jack is arranged at the stern of the deck of the crane ship, and a bow side jack is arranged at the bow of the deck; a 80t anchor gear is arranged at one end of the stern side jack, and a wave compensator is arranged at the other end of the stern side jack; one end of the bow side jack is provided with a rope container used for storing bow side steel wire ropes, the crane is provided with two main hook steel wire ropes, each main hook steel wire rope is provided with a triangular plate, the main hook steel wire ropes are spliced or disassembled through the bow side steel wire ropes and a second steel wire rope, and the triangular plates can achieve switching of lifting force when the steel wire ropes are spliced; the stern side jack is used for bearing ship sinking acting force when the steel wire rope is spliced or detached; the ship bow side jack plays a role in temporarily fixing the steel wire rope B in seawater when the crane of the crane ship is connected with or dismantled from the steel wire rope B.

A piping system for oil and gas in very deep water includes two opposing flanges and a seal ring between the flanges. Each flange has an annular ridge between concentric grooves. The seal ring has a radial web that connects longitudinal inner and outer sealing portions, which are received in the concentric grooves with the annular ridge received sealingly between the inner and outer sealing portions. The inner sealing portion of the seal ring is longer than the outer sealing portion. The web is as thick as or thicker than the inner and outer sealing portions. The seal ring comprises inner and outer concentric hollow cylinders having a non-uniform wall thickness and an annular rib that connects the hollow cylinders together, where one cylinder is longer than the other and where the rib has a longitudinal thickness that is as great as the radial thickness of the walls of the hollow cylinders.

The invention provides a dual-drive deepwater wellbore integrity failure risk evaluation method, and belongs to the technical field of deepwater drilling safety, and the dual-drive deepwater wellbore integrity failure risk evaluation method comprises the following steps: based on fault tree analysis in a bowknot model, identifying a wellbore integrity failure mode; constructing a differentiated evaluation path according to the failure mode, and quantifying a static equipment failure risk and a dynamic structure failure risk respectively; constructing a wellbore system-level failure probability model through a fault tree and Bayesian network dynamic mapping mechanism; based on event tree analysis, modeling is conducted on the safety barrier state after shaft integrity failure, accident consequences are deduced, and the occurrence probability of the accident consequences is calculated; and outputting the system-level failure probability, the key path contribution degree, the bottom event sensitivity sequence and the accident consequence probability, and solving the technical problem that the system-level failure risk is difficult to accurately predict and dynamically prevent and control because static empirical data and a dynamic mechanical mechanism are separated and cannot be coupled and updated in real time.

The invention relates to the technical field of submerged plant planting, and discloses an intelligent submerged plant planting method and system based on bionic light compensation and a storage medium. The system comprises the steps that a bionic sea anemone tentacle flexible base disc is constructed, and a shape memory polyurethane fixing arm and a silica gel suction cup are arranged; preparing a three-layer gradient nutrient sustained-release microcapsule and loading the microcapsule into a nutrient cavity of the basal disc; a water depth spectrum attenuation coefficient is calculated through a chlorophyll fluorescence attenuation inversion algorithm, and a depth adaptive light compensation parameter is generated; degradable spiral barb ground anchors are adopted for fixing, and intelligent planting of submerged plants is achieved. The technical problems that anchoring is unstable, nutrition supply is not matched and light compensation is not accurate in the deep water area submerged plant planting process are solved, and the success rate and the ecological restoration effect of plant planting in the deep water area 3 m or above are improved.

The invention relates to the technical field of Larsen steel sheet pile construction, and discloses a Larsen steel sheet pile cofferdam construction method suitable for a deepwater area, which comprises the following construction steps: 1) arranging a construction platform; (2) four positioning piles are driven into the construction position to form a construction area; 3) arranging a guide frame in the construction area, wherein the guide frame is provided with a guide arm; (4) a plurality of Larsen steel sheet piles are driven along the guide arms, the bottoms of the Larsen steel sheet piles extend into the solid soil layer, and adjacent Larsen steel sheet piles are arranged in a sealed mode; (5) enclosing purlins are arranged on the pile rows, and steel supports are arranged between the enclosing purlins to form an inner supporting structure; (6) water and sludge in the construction area are sucked till the solid soil layer is exposed at the bottom, and the Larsen steel sheet pile cofferdam is formed by the multiple Larsen steel sheet piles and the multiple inner supporting structures; the bottoms of the Larsen steel sheet piles extend to a solid soil layer and are arranged in a sealed mode, and a plurality of inner supporting structures are arranged, so that the water stopping performance of the cofferdam is improved, and meanwhile the stability and the water flow impact resistance are enhanced.

The invention relates to the technical field of composite armored cables, and discloses an intelligent sensing type photoelectric composite armored cable for deep-sea mining equipment, which comprises a cable core formed by twisting a plurality of power cable core conductors, an optical fiber communication unit, a medium conveying pipeline and an intelligent sensing unit, and an outer coating layer, tin-plated annealed copper wires and high-strength copper foil wires are arranged in a conductor of the power cable core, an insulation shielding layer is wrapped outside the conductor, the intelligent sensing unit integrates a plurality of optical fibers and optical fiber grating sensors, a loose structure is arranged outside the intelligent sensing unit, one intelligent sensing unit is used for monitoring strain distribution, the other intelligent sensing unit is used for monitoring temperature distribution, and other redundant optical fibers are used as redundant backups. A certain length of grid region interval is preset, distributed measurement along the length of the cable is realized, a sensing optical fiber in the intelligent sensing unit is connected to an optical fiber demodulator of a deck control room, a software system displays strain, temperature, vibration and form data of each point of the cable in real time, an alarm threshold value is set, and the structure is highly integrated and can adapt to a deepwater environment.

The invention discloses a multifunctional multi-anchor plate pile wharf structure suitable for deepwater berth and a construction method thereof, belongs to the technical field of port engineering, and solves the problems that the section of a deepwater berth plate pile wall structure is too large, deformation control is difficult, and the synergism of an anchorage system is poor. The wharf structure comprises a front sheet pile of the front sheet pile wall structure and a front track beam arranged on the front sheet pile. The pull rod system is arranged between a pavement structure and a pool bottom elevation, at least two common layered pull rods and a multifunctional pull rod are sequentially arranged at intervals from bottom to top, one end of each common layered pull rod is connected to a front sheet pile, and one end of each multifunctional pull rod is connected to a front track beam. The anchorage system comprises at least two common layered anchorage bodies and a multifunctional anchorage body, the common layered anchorage bodies are correspondingly connected with the common layered pull rods, the multifunctional anchorage body is composed of a rear track beam and a rear track beam pile, and the rear track beam is connected with the other end of the multifunctional pull rod. The wharf structure is mainly used for deepwater berth wharf construction, multi-anchor support can be provided, and track beam displacement can be coordinated.

The application relates to the technical field of robots, and discloses a robot leg walking mechanism and a quadruped robot, which comprise a plurality of large arms, one side of each large arm is connected with a floating assembly, the floating assembly comprises a connecting box and an air bag, the connecting box is fixedly connected with one side of the large arm, a placing groove is formed in the side of the connecting box away from the large arm, and the air bag is fixedly connected in the placing groove; the large arm is sequentially connected with an air charging assembly, an air discharging assembly and a jetting assembly from top to bottom on one side; and the connecting box is connected with a closing assembly on one side. The robot leg walking mechanism and the quadruped robot utilize the floating assembly, the quadruped robot can float in a deep water area, the body is prevented from being completely immersed in water, the risk that a camera lens is splashed with water is reduced, the quality and accuracy of real-time image transmission are ensured, a clear field of vision and stable walking ability are provided for the quadruped robot, visual misjudgment or distortion is reduced, and the accuracy and efficiency of a patrol task are improved.

The invention discloses a deepwater bank protection unit row construction error reverse modeling correction method and device, and relates to the field of data processing. Obtaining water body profile data of a target construction area where the deepwater bank protection unit row is located; according to the water body profile data, constructing a hydrological state tensor; inputting the hydrological state tensor into the prediction correction model, and constructing a layered water resistance field and a non-uniform sinking path dynamic response equation of the unit drainage body; determining a prediction result based on the stratified water resistance field and the non-uniform sinking path dynamic response equation; obtaining an attitude response vector flow sent by the sensor equipment after the unit row body enters water; dynamically matching the attitude response vector flow with a prediction result, and outputting an arrangement path correction value and a pitching attitude adjustment suggested amount; and dynamically correcting the attitude and the sinking path of the unit row body based on the arrangement path correction value and the pitching attitude adjustment suggested amount. The construction precision of the deepwater revetment unit row in a complex hydrological scene can be improved conveniently.

The embodiment of the invention provides a remote sensing image atmospheric correction method and system for an ocean near-shore scene, and relates to the technical field of ocean remote sensing image atmospheric correction. According to the method, after remote sensing data is obtained, solar flare correction is executed by extracting a target mask and using a secondary simulation model of a satellite signal in a solar spectrum. And then a multi-band darkness index is calculated, and an optimal aerosol optical thickness value is inverted through a radiation transmission model. And calculating the atmospheric correction coefficient of each wave band according to the optimal aerosol optical thickness value so as to generate correction result data. According to the method, on the basis of robust flare correction of the SWIR proxy, scene-adaptive flare proxy is constructed by utilizing water body reflection and path radiation physical characteristics of the SWIR under a deepwater condition, and flare deduction is realized. Inversion is carried out through multiband combined darkness indexes, and the spectral characteristics of the deep water body reflected in the visible spectrum are utilized, so that single-band random noise is smoothed, and the accuracy of an AOT estimation result is improved.

The utility model discloses a multifunctional deep sea environment simulation system, and relates to the technical field of deep sea engineering experiment devices. Comprising a wave flow experiment water tank which is a containing cavity capable of bearing water, and the top of the water tank is of an open structure; a deepwater experiment area, a transition experiment area and a shallow water experiment area are sequentially arranged in the water tank according to the wind direction; the fan array is used for providing a wind field with a preset condition required by an experiment above the water body; the flow guide array is used for guiding and controlling air generated by the fan array; the current generation array is used for generating current and completing circulation of the water body in the wave current experiment water tank through a backflow channel; the wave making array is used for generating waves with different periods and wave heights for the water body; and the wave absorbing plate is used for dissipating energy of the generated waves. According to the system, multi-factor combined action experiment simulation can be synchronously carried out, and the design precision is remarkably improved; the wind wave coupling effect on the structure is achieved, and the real sea wind wave environment is simulated.

The invention discloses a deep-water explosion container dynamic response prediction method, and relates to the technical field of deep-water structure safety protection, a deep learning prediction model is established, material characteristic parameters and external load parameters are taken as inputs, container dynamic response indexes are taken as outputs, model training, verification and testing are carried out by using a sample set, and a deep-water explosion container dynamic response prediction model is obtained. And a deep-water explosion container dynamic response prediction model capable of rapidly predicting the dynamic response of the container is obtained. According to the method, a high-quality training data set is constructed through numerical simulation, so that the physical authenticity and prediction precision of a machine learning model are ensured; and the trained model can realize rapid prediction of dynamic response, so that the problem that the precision and the efficiency are difficult to balance in the existing method is effectively solved, and the requirements of rapid evaluation and real-time early warning in engineering are met. The data set contains the explosion load parameters and the deepwater environment parameters, the defect that the application range of a traditional empirical formula is narrow is overcome, and the engineering application cost is reduced.

The invention provides an adsorption pressure return type blowout control method, which comprises the following steps: intervening when well control abnormity occurs at the beginning (such as overflow precursor), compounding a methane adsorbent and a conventional drilling fluid additive to prepare high-density composite well control fluid, and injecting the high-density composite well control fluid into a shaft by a special device at a position 100-200m below a wellhead according to preset displacement and pressure parameters. According to the method, bubbles in a shaft are adsorbed through an adsorbent, the slippage speed and the gas phase volume fraction are reduced, and the synergistic effect of static pressure constraint and active adsorption is achieved. Therefore, back pressure fluctuation can be stabilized in the early stage of gas cut, gas column expansion and pressure rising are limited, the risk of pressure leakage and secondary eruption is reduced, the purpose of preventing or restraining blowout is achieved, and the gas cut blowout prevention device is suitable for complex working conditions such as fractured stratums, deep water, high temperature and high pressure and narrow-density windows.

The invention discloses a wetland ecological restoration method combined with water ecological restoration monitoring, and relates to the technical field of ecological restoration. The method comprises the following steps: acquiring water depths, nitrogen and phosphorus concentrations, dissolved oxygen and biodiversity indexes of a deep water area, a shallow water area and a coastal zone of a wetland through a sensor network, and generating an initial data set; dividing a wetland region by adopting a K-means clustering algorithm, and constructing a classification region feature model; based on the nitrogen and phosphorus concentration and the water depth of each region, configuring plant species, simulating a water flow gallery and optimizing the pollutant removal efficiency; integrating coastal zone data, optimizing the external pollution interception efficiency by using a genetic algorithm, and obtaining an optimal matching parameter; generating a collaborative ecological restoration framework by iteratively adjusting plant parameters, and establishing a comprehensive numerical evaluation model; and a management data set is generated according to an evaluation result, and quantitative optimization of the wetland ecological restoration effect is realized. According to the method, the pollutant removal efficiency can be effectively improved, and collaborative recovery of ecological functions can be ensured.

The invention provides a decapterus maruadsi deepwater net cage culture method, and belongs to the technical field of decapterus maruadsi culture. According to the method, the submersible net cage is adopted, the decapterus maruadsi is located in the optimal growth water layer at the temperature of 20-25 DEG C all the year round according to rising and falling of seasons (surface water temperature), a guide pipe is adopted for fixed-point feed feeding, and the feed coefficient is reduced to 1.25 or below. According to the method, a water temperature-feeding amount-allicin-probiotics coupling model is established, the enteritis incidence rate in the high-temperature period is controlled within 2%, and annual continuous growth of decapterus maruadsi in deep and far sea is achieved.

The disclosed relates to systems and methods for generating wave energy incorporated into the floating production, storage and offloading units, which comprises: one or more energy extraction chambers arranged on sides of a floating production, storage and offloading unit; each energy extraction chamber having a lower opening being obtained from removal of a bottom plate of the chamber to provide fluid communication between the interior of the chamber and the seawater; an upper opening made at the top of the chamber for passage of air flow; and an energy generation assembly for converting air flow from the opening into electrical energy; wherein each air chamber is obtained by widening a ballast tank in the direction opposite to the center of the unit to create a resonance condition in the chamber so that a final chamber widening width is determined based on a resonance period of interest of the chamber.

The application discloses a kind of deep water detection sealed cabin and underwater acoustic communication equipment thereof, it is related to underwater communication equipment class technical field, the deep water detection sealed cabin includes main sealed cabin and side sealed cabin, side sealed cabin is detached fixed at the two ends of main sealed cabin, main sealed cabin is fixed with nut by bolt between side sealed cabin, the outer side wall of side sealed cabin is slidably connected with outer sealing shell, at least one jack is opened at the end of outer sealing shell, the outer side wall of main sealed cabin is movably installed with the equal number of plug pin of jack, spring is always pushed to its assembly on plug pin, after plug pin and jack assembly, outer sealing shell can seal bolt and nut completely.The application is sealed by setting outer sealing shell when the detection sealed cabin is located in deep water, bolt and nut can be effectively separated from water, so as to avoid seawater corrosion bolt, nut, when maintaining or overhauling its internal underwater acoustic communication equipment subsequently, it is more convenient to disassemble.

The application discloses a kind of static water pressure simulation device and pressure sampling method with pressure, it is related to sediment-water interface biogeochemical process simulation technical field, the application includes container cylinder, top sealing installation has sealing cylinder cover;Pressure gauge and temperature table are located on sealing cylinder cover;Air inlet assembly and air release assembly are located on sealing cylinder cover;Discharge pipe is located in the lower part of container cylinder, and first control valve, sampling tube, second control valve are sequentially connected in series.The application has broken through to realize the sampling without pressure relief under the condition of in-situ static water pressure, effectively avoids systematic error caused by dissolved gas due to decompression escape;It is suitable for a variety of sediment types and gas types, and provides a high-fidelity experimental platform for greenhouse gas emission research under extreme conditions of deep water reservoir, thermal stratification area;Provide key data support and methodological basis for constructing pressure-corrected methane flux model and deep water carbon emission inventory, serve the national "double carbon" strategy and global change research needs.

The present application belongs to the field of deep and deepwater oil and gas resource development and exploitation in the oil and gas exploitation industry, and particularly relates to an experimental device and method for simulating and evaluating instability and sand production of an ultra-deepwater ultra-shallow gas reservoir. The present application provides a complete evaluation experimental device, experimental condition setting method, experimental method and quantitative evaluation method for evaluating the whole process of reservoir and interlayer instability and sand production in the process of ultra-deepwater ultra-shallow gas exploitation, and can realize process simulation and quantitative evaluation, thereby providing direct support for the selection and design and implementation of sand control completion methods for ultra-deepwater ultra-shallow gas reservoirs.

The invention provides a deep-sea high hydrostatic pressure resistant ionic polymer hydrophone structure and an assembly method, and belongs to the technical field of underwater acoustic sensing, the deep-sea high hydrostatic pressure resistant ionic polymer hydrophone structure comprises an upper shell, a shielding copper net, a substrate, a circuit board, a lower shell, a dry state sensitive film, a screw, a pressing plate, a positive electrode and a negative electrode, the shielding copper net is arranged at the top of the lower shell, a dry-state sensitive film is fixed on the front surface of the substrate, a circuit board is adhered to the back surface of the substrate, the substrate is inserted into the lower shell, a cavity at the lower part of the substrate is encapsulated and cured, and after the pressure-resistant shell is packaged, water is injected into the shell of the ionic polymer hydrophone and defoaming is performed. And finally, sealing and curing the water injection hole of the lower shell by using a sealant to form the ionic membrane polymer hydrophone. According to the invention, perfect packaging, low sound wave loss and good low-frequency sensitivity of the hydrophone in a deep water condition can be ensured, and the hydrophone has important popularization and application values for the work of the hydrophone in a deep sea level.

The utility model discloses a floating type draught fan platform which comprises a buoy temporarily supported on a supporting column, the buoy is connected with the draught fan platform through a vertical steel cable, during construction, after a draught fan is provided with part of components, the draught of the floating type draught fan platform is increased, the buoy is emptied to provide vertical buoyancy, part of the weight of the draught fan is offset, and after the draught fan is hoisted, the buoy is connected with the draught fan platform through the vertical steel cable. The method comprises the following steps: dragging a floating fan platform to a deepwater area, injecting water into the platform to sink in the deepwater area, injecting water into the buoy to sink, and after the buoy is supported on a supporting structure of the platform, releasing a vertical connecting steel cable of the buoy and the platform, draining ballast water of the buoy, floating the buoy, separating from the platform, assisting in displacement of the buoy, and finishing installation of the fan. Construction is completed under the condition that the water depth of a wharf is insufficient by combining the separated floating cylinder with the fan platform.

The application discloses a calibration target posture adjusting mechanism of a deep water towing pool PIV system and a use method thereof. The posture adjusting mechanism is connected with the PIV system, and the structure of the posture adjusting mechanism is as follows: a flat base is provided, a lower adjusting plate is mounted on the flat base, an upper adjusting plate is mounted above the lower adjusting plate in a matched mode, a yaw angle adjusting module and a roll angle adjusting module are respectively mounted at two ends of the flat base, two vertical supports vertically downward are fixed to the bottom surface of the flat base, a horizontal support is mounted between the two vertical supports through fasteners, a calibration target frame is mounted between the two vertical supports below the horizontal support, a calibration target is fixedly mounted in the calibration target frame, grooves are formed in the two ends of the upper edge frame and the lower edge frame of the calibration target frame, cuboid aluminum rods are placed in the grooves, and a silicon reflecting mirror is mounted at the outer end of the calibration target frame. A reference block is further arranged on the top surface of the posture adjusting mechanism, two vertical lines are fixed to the reference block, and a counterweight is arranged at the bottom of each vertical line. The adjusting precision is high.

The application provides a method for judging ancient marine water body environment. The method comprises the following steps: obtaining a target shale reservoir core sample in a work area; wherein the target shale reservoir is radiolarian siliceous shale lamina; determining the composition of the shell cavity filling and the filling amount of calcite in the shell cavity in the target shale reservoir based on the target shale reservoir core sample; and determining the ancient marine water body environment during the deposition period of the target shale reservoir in the work area according to the composition of the shell cavity filling and the filling amount of calcite in the shell cavity in the target shale reservoir. The method for judging ancient marine water body environment can effectively combine the oxidation-reduction state of the ancient marine deep water body and the precipitation and dissolution conditions of calcite, so as to better promote the reconstruction of the ancient marine environment.

The application relates to a buoyancy-driven telescopic device for a deep-water pool, which comprises a fixed truss serving as a base support structure of the whole device, a guide mechanism installed inside the fixed truss for limiting the sliding path of a buoyancy system and a movable truss in the fixed truss, the buoyancy system being installed at the bottom of the movable truss and used for driving the movable truss to realize long-distance floating and sinking movement, and the movable truss being arranged in a nested mode with the fixed truss and realizing telescopic movement by being driven by the buoyancy system. The device realizes long-distance floating and sinking movement of the movable truss by changing buoyancy, and does not need to rely on external power or hydraulic energy. The device is compact and reasonable in structure, convenient to operate, does not need external power or hydraulic energy by using the buoyancy system as a driving mechanism, thereby solving the problems of deep-water environment adaptability and low long-term use reliability, and reducing energy consumption and maintenance cost.