112 results about "Sand mining" patented technology

The invention belongs to the field of geological environment, and particularly relates to an ecological treatment method oriented to geological environment disasters caused by riverway goafs. The ecological treatment method oriented to geological environment disasters caused by riverway goafs includes the following steps that firstly, the geology of a sand excavation area is observed, the geological environment of the riverway goafs is analyzed, and soil property parameters are determined according to the range and the shape of sand excavation hanging-in-air caves; secondly, the destructing mode of the disasters in the riverway goafs is determined, and the long-time sinking rule and the action mechanism of the hanging-in-air caves are determined; thirdly, the sinkage of the HuLu caves is controlled with a filling grouting method. The geological environment of the riverway goafs is treated ecologically with the method, an optimum method is obtained through on-site exploration, analytic demonstration, theoretical analysis and filling experiments, potential danger of accidents is eliminated, and the method has extensive application prospects and promotional value for guaranteeing smoothness and safety of riverways, reducing geological environment disasters and maintaining ecological balance and has great social and economic benefits.

The invention discloses a manufacturing method of automatic efficient multi-level sand washing and screening equipment. The equipment comprises a cylinder, a material distributing base, an air cylinder and a sand sucking pump; a material distributing plate is arranged in the cylinder, multiple feeding openings are formed in the material distributing base, a connecting plate on the inner wall of the cylinder is connected with the air cylinder through a connecting rod, a first sand outlet cylinder, a second sand outlet cylinder, a third sand outlet cylinder and a fourth sand outlet cylinder are arranged at the bottom end of the cylinder from inside to outside, all the sand outlet cylinders are connected with a first mesh screen, a second mesh screen, a third mesh screen and a sliding plate fixed to the connecting plate through hinges respectively, and multiple vibrating plates are arranged on the connecting plate; a nozzle is arranged on a clean water pipe at the lower end of the material distributing base, a water inlet pipe of the sand sucking pump is arranged in a riverway sand layer with water, and a water outlet pipe is arranged on the upper portion of a feed hopper. The automatic efficient multi-level sand washing and screening equipment can screen and clean mixed gravels during sand mining in a multi-level mode, and the cleaning and screening efficiency is high.

The invention discloses a sand dredger sand excavation monitoring method based on deep learning, and the method comprises the following steps: obtaining a sand excavation monitoring video of a tipping bucket type sand dredger, and processing a to-be-recognized video to obtain an image; constructing a sand excavation detection model and a sand excavation tracking model of the sand dredger based on a Pytorch framework; training the sand excavation detection model; transplanting the trained model to an edge calculation module; an edge calculation module is used for controlling a camera to obtain a sand excavation real-time monitoring video of the tipping bucket type sand dredger, target detection and recognition of a sand excavation hopper are carried out on the sand excavation real-time monitoring video, and then target tracking is carried out on the recognized sand hopper; the sand excavation monitoring device can detect the number of sand excavation hoppers of the sand excavation ship within a period of time, identify the filling condition of each sand excavation hopper, judge whether the sand excavation hoppers are full or empty, perform target tracking on the identified sand hoppers and count the number of the sand excavation hoppers within a period of time. The sand excavation condition and quantity are monitored and counted, so that sand excavation management becomes more scientific, efficient and normative.

An eco-restoration system of a sand mining riverbed includes a riverbed restoration device and a server. The riverbed restoration device includes a connecting plate, wherein the connecting plate comprises connecting ring plates and lengthening plates, the connecting ring plates are connected with one another, a formed cross section is a closed figure, and the lengthening plates are connected withthe bottom edges of the connecting ring plates to increase the height of the riverbed restoration device; the connecting plate comprises planting devices for placing plant seeds for restoring a riverbed, and the server is used for storing riverbed morphological data and calculating the height and quantity required for the riverbed restoration device. The eco-restoration system of the sand mining riverbed provided by the invention can adjust the height of the riverbed restoration device according to the river bed condition, the riverbed are initially fixed, the river bed landslide is preventedthrough the growth of plant roots, the flood control effect is ensured, the aquatic organism habitat is protected, and thus the self-purification ability of the water body is provided.

The invention discloses an automatic monitoring method and system for an illegal sand mining ship based on an underwater acoustic signal. The method uses a hydrophone to collect underwater acoustic data, and transmits the data to the edge computing module through the signal line of the hydrophone. The underwater acoustic signal processing module amplifies and filters the signal collected by the hydrophone, removes the underwater background noise, amplifies the underwater target voiceprint signal, and sends the processed signal to the target feature judgment module. The judging module extracts the acoustic features of the signal through the signal transformation algorithm, and matches them with the features in the pre-established sand dredger voiceprint feature library. When the matching degree reaches the set threshold, a reminder signal is sent.