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The invention discloses a sludge age self-adaptive regulation and control method and system based on dissolved oxygen trend recognition. Aiming at the problem of impact response lag caused by difficulty in COD on-line measurement, the method comprises the following steps: under the condition of stable water inlet and aeration, filtering and sliding window feature extraction are performed on an on-line DO signal to obtain a regression slope representing the change of DO along with time, and COD rising impact is reliably identified in combination with an ORP persistence criterion. A mechanism and machine learning fusion model is adopted to determine an identification threshold value and a target sludge age SRT, the sludge discharge amount is rapidly adjusted after impact triggering, the treatment capacity is synchronously matched, and aeration is used for assisting in maintaining DO stable. The system integrates an online monitoring module, a DO recognizable interval judgment module, a feature calculation module, a load recognition module, an SRT decision module and a sludge discharge execution module. According to the method, rapid impact recognition and closed-loop regulation and control can be realized without an online COD instrument, and the impact resistance and the operation stability of the process are remarkably improved.

This invention discloses a coupled design method for UHPC panel structures in permafrost foundations, relating to the field of permafrost materials technology. The method includes the following steps: calculating the equivalent heat flux between the bottom of the panel and the surface of the foundation; calculating the equivalent depth of action of the permafrost foundation; calculating the equivalent design normal stress of the UHPC panel structure; calculating the safety margin coefficient of the panel structure; calculating the equivalent shear stiffness of the connecting structure; establishing an overall stability evaluation model for the panel structure and calculating the system stability coefficient; and performing joint optimization design to complete the coupled design of the UHPC panel structure in permafrost foundations. This invention constructs a thermo-mechanical coupled design system between the UHPC panel structure and the permafrost foundation, integrating the thermal disturbance of the panel structure, the freezing depth of the permafrost foundation, and the frost heave pressure of the foundation into the structural design process. It also coordinates the crack resistance of the panel with the stiffness of the connecting structure, achieving a full-process coupled analysis from the influence of heat transfer to the stress response of the structure.

The present application relates to waterproof construction field, more specifically to a kind of earth-rock dam cofferdam anti-seepage system construction method, comprising: clay core wall, for dam body anti-seepage;Plastic concrete cutoff wall, it is arranged between clay core wall and curtain grouting defense wall, for dam body and bedrock anti-seepage;Curtain grouting defense wall, it is arranged in the lower end of plastic concrete cutoff wall, for depth bedrock anti-seepage.The clay core wall is conical shape and is arranged in dam body.The plastic concrete cutoff wall is fixed in earth-rock dam and bedrock by anchoring structure.The curtain grouting defense wall is curtain shape and is arranged in permeable bedrock.Earth-rock dam cofferdam anti-seepage system construction method includes the following steps: construction machinery preparation, build construction platform, and drill pilot hole;According to the demand of geological condition, implement pre-grouting operation;Plastic concrete cutoff wall construction;Permeable bedrock curtain grouting;Through reciprocating drive slope roller compactor on clay core wall, filling and rolling are carried out.

The application relates to a multi-unmanned platform scheduling method under a multi-task frequent mode, and belongs to the technical field of path planning. The method comprises the following steps: assigning a polling-received new task to an unmanned platform; calculating the Manhattan distance required by the unmanned platform assigned with the new task and / or the unmanned platform with a planned non-executed task to complete the corresponding task, determining the priority of each unmanned platform based on the Manhattan distance and the running speed of the unmanned platform; and sequentially performing path planning for each unmanned platform according to the priority, which comprises the following steps: obtaining obstacle information based on the running path of an executing task and a planned task, determining whether a path scheme exists for a node in path planning to reach a next adjacent node based on the obstacle information, and determining a next reaching node from the adjacent node without conflict. The method can obtain a suboptimal solution in a short time, and solves the problems of high algorithm time cost and high priority sensitivity in the prior art.

This utility model provides a foldable traverse module assembly, comprising: a foldable truss module, a foldable stabilizing module, and a lighting module. The foldable truss module includes a foldable left cantilever, a foldable right cantilever, and a load-bearing truss. The foldable left and right cantilever are connected to the load-bearing truss via stepped shaft bolts and are locked and unlocked using U-shaped locking pins. This foldable traverse module assembly has the advantages of being easy to fold, easy to operate, portable, space-saving, and saving physical and manpower. It can promote the construction of outdoor sports, adventure, and rope traverse rescue equipment systems and improve water rescue capabilities. The industry market demand potential is huge, and it can be equipped by various outdoor sports and adventure teams, fire rescue teams, and professional water rescue teams. It has broad development prospects and is of great significance to public fire safety.