Abstract: A low-altitude frequency domain electromagnetic detection device and an electromagnetic detection method are disclosed. A transmitting wireframe, a receiving wireframe I, a transmitting and receiving system and a receiving wireframe II of the detection device are connected with supporting rods at intervals, and the supporting rods are connected with an unmanned aerial vehicle. A sine wave generation module of the transmitting and receiving system is connected with the transmitting wireframe, the receiving wireframes I and II are connected with a dual-channel synchronous data acquisition module, and the dual-channel synchronous data acquisition module is connected with a main control module. The main control module controls the sine wave generation module, receives data of an altimeter, a GNSS module and the dual-channel synchronous data acquisition module and records the data in a storage module.

Abstract: The present disclosure relates to the technical field of geotechnical engineering digitization, and in particular to a digital and intelligent operation and maintenance system for a tailings pond. The present disclosure has a better supplementary effect on the operation and maintenance of the tailings pond, can judge and warn the stability of the dam body and the pollution degree of the surrounding environment during the operation of the tailings dam, and can provide a good tailings discharge mode.

Abstract: A low-altitude frequency domain electromagnetic detection device and an electromagnetic detection method are disclosed. A transmitting wireframe, a receiving wireframe I, a transmitting and receiving system and a receiving wireframe II of the detection device are connected with supporting rods at intervals, and the supporting rods are connected with an unmanned aerial vehicle. A sine wave generation module of the transmitting and receiving system is connected with the transmitting wireframe, the receiving wireframes I and II are connected with a dual-channel synchronous data acquisition module, and the dual-channel synchronous data acquisition module is connected with a main control module. The main control module controls the sine wave generation module, receives data of an altimeter, a GNSS module and the dual-channel synchronous data acquisition module and records the data in a storage module.

Abstract: The present disclosure relates to the technical field of geotechnical engineering digitization, and in particular to a digital and intelligent operation and maintenance system for a tailings pond. The present disclosure has a better supplementary effect on the operation and maintenance of the tailings pond, can judge and warn the stability of the dam body and the pollution degree of the surrounding environment during the operation of the tailings dam, and can provide a good tailings discharge mode.

Abstract: The present disclosure relates to the field of survey and stability evaluation of a tailing fill dam, in particular to a method and system for survey and stability evaluation of an upstream tailing fill dam, wherein the method comprises the following steps: selecting a drill bit and a soil sampler for a target tailing fill dam; collecting tailing sand at different depths of the target tailing fill dam using the drill bit and the soil sampler; detecting an undisturbed soil sample of the tailing sand; setting a preset standard according to the undisturbed soil sample, and screening the tailing sand using the preset standard to obtain a tailing sand sample; detecting the particle composition of the tailing sand sample; detecting the mechanical property of the tailing sand sample; and evaluating the stability of the target tailing fill dam through the particle composition and the mechanical property.

Abstract: A method and device for calculating an optimal leveling stiffness of pile top displacement regulators in a composite foundation are disclosed. The method includes: determining basic parameters for calculating the optimal leveling stiffness of the pile top displacement regulators in the composite foundation; building an optimal mathematical model for calculating the optimal leveling stiffness of the pile top displacement regulators in the composite foundation, and solving the optimal mathematical model for calculating the optimal leveling stiffness of the pile top displacement regulators in the composite foundation to obtain the optimal leveling stiffness. The method and device maximize the bearing capacity of the composite foundation by taking an optimal value of the leveling stiffness of the pile top displacement regulators. The method and device realize accurate quantitative analysis for composite foundation design by adjusting the value of the leveling stiffness of the pile top displacement regulators.

Abstract: A high-efficiency particle analysis method includes the following steps: taking representative air-dried samples and measuring a moisture content; boiling, sieving, weighing and adding a dispersant; conducting a particle analysis test; reading four readings of 1st to 59th and 60th to 90th samples; and drawing a particle size distribution curve showing the relationship between the particle size and the percentage of below a certain diameter. According to the method, a time difference is used to change the measurement mode, and the four readings of the 59th and 90th samples are read in a cycling manner; and a novel test method is provided on the premise of ensuring quality, thus greatly improving the efficiency of a particle analysis test and meeting production requirements.