Abstract: The present invention has disclosed a movable water-permeable pile spur dike and an operation method thereof. The pile spur dike includes a fixed rail, a plurality of movable rails, a plurality of movable water-permeable piles, pressure sensors, flow meters and a control platform, wherein the plurality of movable water-permeable piles are arranged on the fixed rail and the plurality of movable rails, the pressure sensor and the flow meter are arranged at each monitoring point on the outer side wall of each movable water-permeable pile, the control platform is used for analysis and calculation according to the monitoring data from each pressure sensor and each flow meter and adjusts the positions of each movable rail and each movable water-permeable pile, so that the water flow velocity and spur dike's pressure at each monitoring point are less than a corresponding flow velocity threshold value and pressure threshold value.

Abstract: The invention discloses a biological water-quality detection method using said obstructive multi-module biological water-quality detection device. This device includes an obstruction index-selecting device and a water-quality testing device, wherein the obstruction index-selecting device is used to select a qualified or valid stepped obstruction level combination, the water-quality testing device detects the water-quality of the water body to be tested depending on the behavior at each obstruction in the valid obstruction level combination after injecting indicator organisms into the water body to be tested. The relationship between the degree of water pollution and the distribution area of indicator organisms is established and the distribution area of indicator organisms is counted in this method based on the difference between the behaviors of indicator organisms in the clean water body and the polluted water body count, so as to determine the degree of water pollution.

Abstract: Provided are antenna arrays based on three-dimensional special-shaped wave-absorbing structures by the disclosure, and includes an antenna array fixing plate and a plurality of antenna array units, where the antenna array units are sequentially fixed on the antenna array fixing plate; each of the plurality of antenna array units includes an antenna transmitting channel, two antenna receiving channels and a pair of three-dimensional special-shaped wave-absorbing structures; the antenna transmitting channel is used for transmitting antenna signals; the antenna receiving channels are used for receiving the antenna signals; and the three-dimensional special-shaped wave-absorbing structures are used for isolating antenna signals of antenna transmitting channels of other antenna array units.

Abstract: A water environment temperature measurement tool includes measurement boxes and a counterweight box; a plurality of groups of the measurement boxes are provided; the counterweight box is movably connected with a group of measurement boxes; and each measurement box is provided with a temperature measurement instrument inside. The water environment temperature measurement tool further comprises: control mechanisms, each comprising a water inlet pipe, a water retaining member, an elastic member, a control assembly, a rotating seat, a rotating shaft, a second screw rod, a control seat and a rotary assembly. In the water environment temperature measurement tool of the present invention, the control mechanisms can achieve extraction and temperature measurement of water at different water body depths by cooperating with the measurement boxes and the temperature measurement instruments.

Abstract: An anti-cavitation damping composite metal structure for a flow passage component and a preparation method thereof are provided. The preparation method includes: cladding a gradient functional material layer by layer on a substrate of a flow passage component; forming periodic structures on a surface of each layer of the gradient functional material through etching by an ultrafast laser to absorb a part of an impact load energy caused by cavitation of the flow passage component, where the layers of the gradient functional material form a gradient coating with a toughness increasing layer by layer and a hardness decreasing layer by layer from bottom to top; and forming nano twins on a surface layer by a laser shock peening technique, and implanting a residual compressive stress to further improve anti-cavitation resistance of a surface.

Abstract: Water conservancy construction sewage treatment mechanism, including a support mounting cylinder, where a variable-diameter sedimentation cylinder is arranged at one end of the support mounting cylinder, one half of the cylinder wall of the support mounting cylinder is a thin wall and the other half is a thick wall, and the thin wall and the thick wall are disposed oppositely. The water conservancy construction sewage treatment mechanism also includes: a variable-diameter diversion cylinder, which is arranged on the thin wall at the other end of the support mounting cylinder; several displacement diversion modules, which are arranged on the thick wall of the support mounting cylinder and include guide displacement structures and combined diversion structures; and a magnetic attraction displacement adjusting structure, which is arranged on the outer side of the thick wall of the support mounting cylinder and is matched with the guide displacement structures and the combined diversion structures.

Abstract: A method for extracting a dam emergency event based on a dual attention mechanism is provided. The method includes: performing data preprocessing, building a dependency graph, building a dual attention network, and filling a document-level argument. The performing data preprocessing includes labeling a dam emergency corpus and encoding sentences. Building a dependency graph includes assisting a model to mine a syntactic relation based on a dependency. Building a dual attention network includes weighing and fusing an attention network based on a graph transformer network (GTN) and capturing key semantic information in the sentence. Filling a document-level argument includes filling a document-level argument by detecting a key sentence and ordering a semantic similarity. The method introduces a dependency and overcomes the long-range dependency problem based on the dual attention mechanism, thus achieving high identification accuracy and reducing a lot of labor costs.

Abstract: The present invention belongs to the technical field of rock and soil reinforcement, and specifically relates to a plant urease-containing soil solidification agent and a zero-waste production process thereof. A crudely-purified plant urease solution includes a large amount of irrelevant proteins, which seriously affects the treatment effect of the soil solidification agent, makes it impossible to achieve an expected construction purpose, and also causes serious waste and environmental pollution. In the present invention, a common plant urease extraction method on the market is optimized to significantly reduce a protein concentration in a plant urease solution, greatly improve the infiltration performance of a plant urease-containing soil solidification agent, and broaden an application range of such a soil solidification agent.

Abstract: Disclosed is a maximum communication delay measurement method for safe braking of a smart connected vehicle; the measurement method is: first performing parameter initialization, the parameters for initialization comprising vehicle braking parameters, kinematic/kinetic parameters, and communication parameters; then generating a braking force function of the vehicle, taking the minimum distance between vehicles as the objective, and solving for the maximum allowable communication delay between vehicles on the basis of the proposed evaluation method.

Abstract: A method for optimizing a reservoir operation for multiple objectives based on a GCN and a NSGA-II algorithm. The method includes collecting relevant data for reservoir flood-control operation and establishing a multi-objective optimization model for the flood control. An initial population is obtained. Grouping individuals by an encoding operation and the grouped classifications are nodes of the GCN, and mapping parent-child relationships obtained by crossover and mutation operations as edges between the nodes in the GCN. A preliminary Pareto frontier is obtained, abscissas of the preliminary Pareto frontier are grouped and labeled, and a GCN model is trained by using the grouping labels and the graphic structure obtained in Step 2. The nodes in the graphic structure are classified by using the trained GCN model, and a uniformity of the Pareto frontier is adjusted. A set of non-inferior schemes of the multi-objective optimization problem for the reservoir operation is output.

Abstract: A convex type guide plate waterwheel energy increasing device with gradually dense holes is provided. The convex type guide plate waterwheel energy increasing device comprises fixed devices, a main diversion plate and auxiliary diversion plates, wherein an upwards convex arc structure is arranged on the top surface of the main diversion plate, gradually dense first through holes are formed in the main diversion plate from the middle to the two ends, the diameters of the first through holes are gradually increased, the auxiliary diversion plates are connected to the two sides of the main diversion plate, second through holes are formed in the auxiliary diversion plates, fixed devices are fixed to the two sides of the auxiliary diversion plates, and the fixed devices are used for fixing the main diversion plate and the auxiliary diversion plates to the riverbed.

Abstract: The present invention discloses an immersed active infrared self-cleaning secondary sedimentation tank sludge blanket induction device and an application method thereof, the induction device comprises an upper sleeve and a lower sleeve that are connected up and down and form a communicated inner cavity, a set of infrared emitters and infrared receivers that are located on an inner wall of the upper sleeve and are oppositely arranged, a transparent hard ring that is annularly adhered to front sides of the infrared emitters and the infrared receivers, and a push rod assembly that can move up and down in the inner cavity and is used for cleaning the transparent hard ring; wherein a sludge outlet hole and a water outlet hole located below the sludge outlet hole are arranged on the upper sleeve, a bearing plate is arranged in the inner cavity of the lower sleeve.

Abstract: A control method of a drill jumbo is provided. The drill jumbo includes a pre-splitting arm, a drill arm, and a chamber. The pre-splitting arm includes a positioning device, a fixing buckle, a longer rod, an electric telescopic rod, and a water injection opening. The chamber includes a constant pressure valve, an excitation circuit, and a port. A computer controls the positioning device to perform positioning, afterwards, the fixing buckle is opened, the telescopic rod is started, the longer rod is jacked into a position in the hole, and oil is injected into a hydraulic expansion capsule. After blocking of the hole is completed, water is injected into the water injection opening. The port is opened to inject a mixed-phase fluid. The port is closed, the excitation circuit is started, and after a pressure rises to a set value, the constant pressure valve is opened.

Abstract: A method for extracting a dam emergency event based on a dual attention mechanism is provided. The method includes: performing data preprocessing, building a dependency graph, building a dual attention network, and filling a document-level argument. The performing data preprocessing includes labeling a dam emergency corpus and encoding sentences. Building a dependency graph includes assisting a model to mine a syntactic relation based on a dependency. Building a dual attention network includes weighing and fusing an attention network based on a graph transformer network (GTN) and capturing key semantic information in the sentence. Filling a document-level argument includes filling a document-level argument by detecting a key sentence and ordering a semantic similarity. The method introduces a dependency and overcomes the long-range dependency problem based on the dual attention mechanism, thus achieving high identification accuracy and reducing a lot of labor costs.

Abstract: A method for determining flow velocity distribution in the roughness sublayer is provided, which uses the experimental device that includes a variable-slope circulating flume system and a flow-measuring system, the variable-slope circulating flume system is used to study flow in the roughness sublayer, and the flow-measuring system is used to measure flow velocity in each zone in the flume. In the variable-slope circulating flume, the method according to the invention uses cylindrical aluminum rods to simulate large-scale roughness elements, and the submergence, the average bulk flow velocity and the distribution density of roughness elements are changed.

Abstract: A control method of a drill jumbo is provided. The drill jumbo includes a pre-splitting arm, a drill arm, and a chamber. The pre-splitting arm includes a positioning device, a fixing buckle, a longer rod, an electric telescopic rod, and a water injection opening. The chamber includes a constant pressure valve, an excitation circuit, and a port. A computer controls the positioning device to perform positioning, afterwards, the fixing buckle is opened, the telescopic rod is started, the longer rod is jacked into a position in the hole, and oil is injected into a hydraulic expansion capsule. After blocking of the hole is completed, water is injected into the water injection opening. The port is opened to inject a mixed-phase fluid. The port is closed, the excitation circuit is started, and after a pressure rises to a set value, the constant pressure valve is opened.

Abstract: The present invention discloses an optimized preparation method of a carbonization-based lightweight CO2 foamed cement-based material, and belongs to the field of geotechnical engineering materials. The preparation method includes: step S1: pre-screening existing common cement-based foaming agents and foam stabilizers; step S2: preparing a water-based carbon dioxide foam; step S3: preparing a cement slurry, and mixing the water-based carbon dioxide foam with the cement slurry to prepare a lightweight CO2 foamed cement-based material; step S4: selecting foaming agents of different types and different concentrations and foam stabilizers of different types and different concentrations to prepare slurries, subjecting the slurries to slurry performance tests, and selecting the optimal ones; step S5: optimizing initial water-to-cement ratio and foam-to-slurry ratio parameters; and step S6: optimizing a gas-filling volume parameter (water pump speed).

Abstract: Provided in the present invention is a diagenetic cementation solution and a method for manufacturing a sand sculpture with the same. The diagenetic cementation solution includes a urease-containing plant powder, urea, calcium salt and a cementation solution, wherein the urease-containing plant powder is dissolved in the cementation solution in a mass ratio of 10:50 to 1:50, a resulting mixture is stirred and left to stand for a period of time, and a supernate is reserved; a mixture of the urea and the calcium salt is dissolved in the supernate in a mass ratio of 1:5 to 1:20. The method for manufacturing a sand sculpture includes: ramming a foundation by means of the diagenetic cementation solution, mounting a form and piling sand, pouring and ramming, and removing the form and carrying out sculpturing.

Abstract: The present invention belongs to the technical field of rock and soil reinforcement, and specifically relates to a plant urease-containing soil solidification agent and a zero-waste production process thereof. A crudely-purified plant urease solution includes a large amount of irrelevant proteins, which seriously affects the treatment effect of the soil solidification agent, makes it impossible to achieve an expected construction purpose, and also causes serious waste and environmental pollution. In the present invention, a common plant urease extraction method on the market is optimized to significantly reduce a protein concentration in a plant urease solution, greatly improve the infiltration performance of a plant urease-containing soil solidification agent, and broaden an application range of such a soil solidification agent.

Abstract: The present invention discloses an immersed active infrared self-cleaning secondary sedimentation tank sludge blanket induction device and an application method thereof, the induction device comprises an upper sleeve and a lower sleeve that are connected up and down and form a communicated inner cavity, a set of infrared emitters and infrared receivers that are located on an inner wall of the upper sleeve and are oppositely arranged, a transparent hard ring that is annularly adhered to front sides of the infrared emitters and the infrared receivers, and a push rod assembly that can move up and down in the inner cavity and is used for cleaning the transparent hard ring; wherein a sludge outlet hole and a water outlet hole located below the sludge outlet hole are arranged on the upper sleeve, a bearing plate is arranged in the inner cavity of the lower sleeve.