17 results about "Sand mining" patented technology

The application discloses a kind of tailings pond dry stoping process based on multistage belt conveyor, belong to tailings stoping technical field, mainly include tailings pond exploration, stoping area division and parameter determination, transport laying, stoping sequence planning and drainage facility arrangement;The application is based on the drainage mode of "chute+drainage culvert", including stoping I area, stoping II area, stoping area, block by using sand taking strip, sand taking path, in-pit transport road, belt transport and sand mining pit guide drainage pit, zoning, strip division is carried out in tailings pond in-pit, each area in the pit is layered and taken sand in strip by using excavator+small transport vehicle, and the dam top to dam foot is transported by belt transport, and is transported to large self-unloading truck by unloading buffer bin, effectively solve the stoping condition that tailings pond upper dam road cannot be transported by car, improve the efficiency of tailings pond stoping.

The utility model discloses a riverway sand excavation pit ecological restoration structure which comprises a bottom plate, the top of the bottom plate is fixedly connected with a plurality of vertical rods, the inner walls of the plurality of vertical rods are provided with anti-loss devices, and each anti-loss device comprises a plurality of filter plates which are movably connected to the inner walls of the plurality of vertical rods; the plurality of planting boxes are arranged on the inner wall of the bottom plate; wherein the filter plate can filter silt in water flow in the river channel into the planting box. The utility model relates to the technical field of riverway sand excavation and treatment, in particular to an ecological restoration structure of a riverway sand excavation pit, soil loss is prevented through a loss prevention device, a small amount of soil and aquatic plant seeds are added into a planting box, and a filter plate can filter sludge in river water; the filtered sludge is stored in the planting box to provide nutrients for aquatic plant seeds, soil and seeds do not need to be loaded into a plurality of ecological bags, and the ecological restoration structure is convenient to popularize and use.

The invention belongs to the technical field of quartz sand screening processes and equipment, and particularly relates to a halter anti-blocking obstacle removing device for a sand dredger. The prior art lacks a special device capable of efficiently, actively and continuously preventing and removing various flexible and winding sundries at a sand suction opening on the premise of not interrupting normal sand excavation operation. The invention provides a halter anti-blocking obstacle removing device for a sand dredger, which is assembled at the end part of a sand suction pipe of an existing sand dredger and is used for removing possible impurities capable of blocking a halter and preventing the halter from being blocked by the impurities to influence the sand dredger to supply mortar raw materials to a silica sand production line. The circumferential rotary rail is adopted to support the cutter sliding along the rail, sundries and grass roots wound on the halter are cut and eliminated, the scheme is simple, convenient and easy to implement, maintenance is fast, and the obstacle removing device is not prone to being wound by weeds and roots for the second time.

This invention discloses a simulation calculation method for the impact of river sand mining on navigation flow conditions, including: collecting and integrating basic geographic information and hydrological data of the sand mining area to construct a digital elevation model and hydrological database covering the entire area; based on the integrated data and Cartesian coordinate system, using an unstructured grid to partition the sand mining area to obtain a grid file of the sand mining area; given the initial conditions, boundary conditions, and dynamic boundary technology of the model, establishing a two-dimensional planar hydrodynamic model based on two-dimensional continuity equations and two-dimensional momentum equations through data collection and preprocessing; conducting model verification and calibration experiments based on existing historical measured data; and designing two sets of working conditions before and after sand mining according to the sand mining scheme and navigation engineering design scheme, obtaining prediction results based on the simulated values ​​of the hydrodynamic model.

The application discloses a kind of based on the real-time monitoring device of sand dredging behavior of sand dredger of multi-beam system.The monitoring device includes satellite signal receiving module, multi-beam sounding module, information processing module, communication module and power control module.Satellite signal receiving module is used to receive Beidou satellite signal;Multi-beam sounding module includes the multi-beam depth finder for emitting and receiving water depth detection acoustic wave, and the attitude sensor for collecting ship body attitude data;Information processing module is used for position solution, topography and sand dredging amount calculation;Communication module communicates with ground control center, and real-time sends the topography and sand dredging amount of measured position;Power controller is used to automatically cut off the power system of sand dredger after sand dredging amount exceeds limit, realizes the real-time control of sand dredging behavior.The application can monitor the behavior of sand dredger in real time, and control over-dredging behavior in real time;And when multiple ships are simultaneously dredging, the sand dredging amount of each ship can be distinguished, and accurate control can be achieved.

The invention belongs to the technical field of quartz sand screening processes and equipment, and particularly relates to a conical roller screen with a multi-layer screen structure. The front end of a production line is not provided with an efficient and special impurity screening device, and a simple grating or manual sorting is mostly adopted, so that the problems of incomplete screening, high labor intensity, easiness in blockage and the like exist. Therefore, the special screening equipment capable of efficiently and continuously removing the impurities in the raw ore is urgently needed and is arranged behind a sand dredger and in front of a hydraulic classifier so as to guarantee stable operation and product quality of a whole production line. The invention provides a conical roller screen with a multi-layer screen structure, which is arranged at the front end of a silica sand mining and dressing production line, is positioned between a raw ore outlet provided by a sand dredger and a hydraulic classifier, and is mainly used for screening out non-silica sand raw materials such as branches, garbage and sundries in raw ores. The device has the characteristics of high screening efficiency, high treatment capacity, difficulty in blockage, compact structure and the like.

The utility model discloses a dust isolation device with centrifugal fan for open-air quartz sand mining, which comprises: a centrifugal fan body, a mounting motor arranged outside the centrifugal fan body, and an impeller back disc mounted at the output end of the mounting motor, wherein the outside of the impeller back disc is connected with a blade, and the lower end of the centrifugal fan body is provided with a mounting bracket, and the outside of the mounting bracket is welded with an outer support plate; the outside of the blade is connected with an impeller front disc; the outside of the centrifugal fan body is fixed with an external interface plate, and the inside of the external interface plate is provided with an exhaust port; and the air inlet of the centrifugal fan body is provided with a dustproof assembly. The dust isolation device with centrifugal fan for open-air quartz sand mining can filter the air before entering the device through the setting of the dust screen, thereby playing a dust isolation role, and the dust screen can be disassembled and replaced under the setting of the dustproof assembly.

The utility model discloses a spray dryer for ceramic colored sand, which relates to the technical field of ceramic colored sand processing, and comprises a mixing tank, a heating box body and a motor, the bottom end of the mixing tank is connected with a discharge pipe in a penetrating manner, a feeding through hole is formed right above the mixing tank in a penetrating manner, a drying mechanism is arranged on the outer side of the heating box body, and the motor is connected with the heating box body. The drying mechanism heats the surface of ceramic and meanwhile heats and dries the sprayed dyeing material, the time of colored sand in the processing process is shortened, a processing mechanism is arranged in the mixing tank, the processing mechanism continuously mixes ceramic sand and stone, and meanwhile the dyeing material is sprayed to the surface of the sand and stone, so that the color sand processing time is shortened. And then ceramic sand excavation processing is completed. In the using process, the motor drives the fan blades to rotate at the same time, meanwhile, the motor is used for driving the spiral blades to rotate, and therefore materials and ceramic particles are evenly heated while the materials are lifted and sprayed.

The utility model relates to quartz sand mining and mineral processing technical field especially, relates to a kind of quartz sand mining recovery device of adaptation different granularity, including support frame, hopper, mounting frame, mineral processing filter frame and filter screen etc., support frame top fixedly connected mounting frame, mounting frame top is equipped with the hopper of front high rear low inclination arrangement, mounting frame left and right sides slidingly connected three vertical arrangement mineral processing filter frame, each is located directly below hopper, each mineral processing filter frame is equipped with filter screen, aperture increases gradually from top to bottom, the filter screen of first mineral processing filter frame is rear high front low inclination arrangement, filter screen higher end lower side is equipped with discharge port.The utility model is arranged three vertical arrangement and filter screen aperture increases gradually from top to bottom mineral processing filter frame, and in combination with each layer filter screen inclination arrangement and vibrating screen design, reached to quartz sand material according to granularity high-efficiency classification, continuous screening effect, significantly improved the separation precision and recovery efficiency of different particle size particles.

The invention discloses a crushing, slurry-making and slag-isolating machine for upstream type tailing pond wet mining. The crushing, slurry-making and slag-isolating machine is formed by combining a crushing, slurry-making system and a screening and slag-removing system. The crushing and slurry making system comprises a shearing and crushing device, the shearing and crushing device is composed of a double-shaft central pipe (4) and rolling blades (3) installed on the double-shaft central pipe (4), and the slag separating and removing system comprises a rolling screen (9). And detachable buoys (18) and rolling wheels (19) are arranged at the bottom of the crushing and pulping system and the bottom of the screening and deslagging system. The tailings are separated and purified by using the crushing and slurry making system and the screening and deslagging system. Tailings are crushed by the rolling blades (3) to form primary tailing slag slurry, and impurities in the slag slurry are filtered out by the rolling screen (9). The crushing, slurry-making and slag-isolating machine is convenient to assemble and disassemble, low in construction cost, high in operability, capable of effectively solving the problems that wet mining and slurry-making of tailings are difficult and a conveying pump pipe is blocked, capable of improving the efficiency of stoping and slurry-making, high in sand mining quality, free of impurities and convenient for subsequent comprehensive utilization.

This invention discloses a big data-driven optimization method and system for tailings dam recovery schemes, relating to the field of mineral resource recovery and intelligent optimization technology. The system's operation includes: constructing a detailed three-dimensional digital model of the dam area; conducting value zoning evaluation to delineate high-value recovery zones and low-value replacement zones; implementing surface mining and pipeline transportation of high-value zones using a floating sand mining platform; simultaneously filling low-value materials into the goaf to maintain stress balance; and dynamically regulating the hydraulic system based on intelligent monitoring data of the entire dam area to ensure the safety of the dry beach length and phreatic line. The system comprises six modules: multi-source data acquisition, digital modeling, intelligent zoning evaluation, recovery operation execution, synchronous filling and reinforcement, and dynamic monitoring and balance control. This application achieves synergistic optimization of efficient high-value tailings recovery and dam structural safety through spatial replacement and dynamic balance mechanisms.

The application discloses a sand mining ship identification method, a sand mining activity dynamic monitoring method and a system for large rivers, and the sand mining ship identification method comprises the following steps: S100, processing low-resolution remote sensing images of a target river basin at multiple time sequences into low-resolution slice images; S200, performing super-resolution image reconstruction on the low-resolution slice images by using a super network to obtain high-resolution reconstructed slice images at multiple time sequences; and S300, performing sand mining ship identification on the high-resolution reconstructed slice images by using a sand mining ship instance segmentation model, and outputting multiple time sequence images containing sand mining ship identification results; the sand mining ship identification results comprise a boundary box, a target category, a confidence degree and a sand mining ship instance mask. The application can accurately identify sand mining ships with various sizes and dynamic multi-directional characteristics in large rivers, and can meet the complex scene requirements of sand mining ship monitoring in large rivers.

The present application relates to an ecological restoration method for in-situ resource utilization of contaminated pond sediment of sandy coast, and belongs to the technical field of ecological restoration and solid waste resource utilization. The method comprises the following steps: evaluating the pollution condition of the sandy sediment at the bottom of the eutrophic pond of the sandy coast; under the condition that the water pollutants exceed the standard but the greening planting soil does not exceed the standard, using the dry dredging and temporary storage method, transporting the sandy sediment to the greening planting area in the project area after excavation, and using the pretreated sandy sediment as the greening planting soil of the local sand vegetation. The present application avoids the secondary pollution caused by the external transportation of the sandy sediment, the restriction of the sand mining policy and the pollution disposal problem, reduces the cost, fully utilizes the nutrient elements in the sandy sediment to provide nutrition for the vegetation, plants the local sand vegetation, maximizes the survival rate of the vegetation, avoids the introduction of alien species to cause damage to the local ecology, and realizes the resource utilization and harmless utilization of the sandy contaminated sediment.

The application discloses a kind of cross-sea immersed tunnel siltation and sudden silt load calculation method, comprising: sufficient investigation, collect tunnel area marine environment monitoring data basis, theoretical analysis, according to field test results, establish siltation thickness theoretical model and calculation method under two conditions of sand mining open period and closed period.According to the characteristics of the project area, the siltation load calculation model is established, and the siltation thickness is layered and stacked based on the siltation thickness model.The total load and the incremental load of the tunnel siltation under the siltation state are established.According to the collapse and formation characteristics of the sudden silt material in seawater, a marine sudden silt geometric model is established.The probability density function is used to establish the sudden silt spatial distribution function and the corresponding sudden silt load distribution function.According to the application, the theoretical model and calculation method of the marine environment siltation load and the disaster load formed by the rare sudden siltation in the project area are established, which provides a practical method for calculating the dynamic load on the immersed tunnel during operation.

The invention relates to the technical field of intelligent monitoring, and provides an illegal sand excavation behavior identification method and system, and the method comprises the steps: collecting image data of a sand excavation region; sand excavation equipment is selected from the image data, and position information of the sand excavation equipment is extracted; for the sand excavation equipment in the sand excavation state, generating a movement track; calculating the speed and the acceleration of the sand excavation equipment based on the motion trail, and constructing a space-time diagram based on the motion trail, the speed and the acceleration of the sand excavation equipment; extracting spatiotemporal features of the sand excavation equipment based on the spatiotemporal diagram; time sequence action features of the sand excavation equipment are extracted from the image data of the sand excavation areas at the multiple different visual angles, and the time sequence action features are fused to obtain fused action features; and on the basis of the fused action features and the spatial-temporal features, illegal sand excavation behaviors of the sand excavation equipment are judged. According to the method, comprehensive real-time monitoring of the sand excavation area can be realized, and illegal sand excavation behaviors can be accurately identified.

The application discloses a kind of river and lake water area dynamic monitoring method based on remote sensing image, for suspected sand mining and other activities concealment, difficult to take evidence, method with difference detection identifies change patch, generates constraint boundary and labels space-time information with concurrent water level line and main flow direction;Patch is semantically classified, extracts shoreline cut-in angle, channel center line normal distance, contour slope and spatial relationship with channel, shoal, management range, dynamic electronic fence;Multi-agent model of electronic fence, unmanned aerial vehicle, suspected sand mining ship and transfer point is constructed, according to contour passage zone and time window, evasive path is deduced, narrow corridor is set in intersection section and trigger threshold, and unmanned aerial vehicle standby point and flight path are arranged and operated in linkage;After triggering, evidence is pushed to law enforcement terminal for comparison and disposal;The method realizes closed loop from monitoring to evidence.

The invention discloses a novel upstream type tailing pond wet mining pulping method. A tailing pond wet mining crushing pulping filter composed of a crushing pulping system and a screening deslagging system is adopted. The crushing and slurry making system comprises a shearing and crushing device, the shearing and crushing device is composed of a double-shaft central pipe (4) and rolling blades (3) installed on the double-shaft central pipe (4), and the slag separating and removing system comprises a rolling screen (9). And detachable buoys (18) and rolling wheels (19) are arranged at the bottom of the crushing and pulping system and the bottom of the screening and deslagging system. The tailings are separated and purified by using the crushing and slurry making system and the screening and deslagging system. Tailings are crushed by the rolling blades (3) to form primary tailing slag slurry, and impurities in the slag slurry are filtered out by the rolling screen (9). The method can effectively solve the problems of difficulty in wet mining and slurry making of tailings and blockage of a conveying pump pipe, is simple and convenient to operate, can improve the efficiency of stoping and slurry making, is high in stoping efficiency and high in sand mining quality, does not contain impurities, and is convenient for subsequent comprehensive utilization.