17 results about "Ravine" patented technology

The invention relates to the technical field of collapse hill identification methods, in particular to an unmanned aerial vehicle image collapse hill intelligent identification method based on a coordinate attention mechanism. The system comprises an unmanned aerial vehicle image acquisition and preprocessing module, a CA-Unet model construction module, a coordinate attention calculation module and an intelligent collapse hill identification output module. According to the method, a high-resolution image and laser radar point cloud data are collected through an unmanned aerial vehicle, a digital orthoimage and a digital elevation model are generated through orthorectification, and a deep learning data set is constructed; a coordinate attention mechanism is embedded in a U-Net model, the recognition capability of long-distance gullies and steep edges of collapse hills is enhanced through feature coding and dynamic weighting in the horizontal and vertical directions, direction-sensitive feature enhancement is achieved through a coordinate attention calculation module, and finally collapse hill boundary vectors and morphological parameters are output. According to the method, the limitation of a traditional method in the aspects of spatial dependence modeling and boundary extraction is broken through, and accurate recognition and surveying and mapping of the collapse slope erosion landform are achieved.

The invention discloses a bridge pile foundation karst cave treatment method, and relates to the technical field of buildings. Comprising the following steps: acquiring three-dimensional model information of a karst cave; determining a filling mode of the karst cave according to the three-dimensional model information of the karst cave; the karst cave is filled according to the filling mode and the corresponding filling slurry; wherein the fluidity of the filling slurry is 220 to 300 mm. The three-dimensional model information of the karst cave is obtained, the karst cave is filled according to the filling mode and the corresponding filling slurry, accurate filling can be conducted according to the actual shape of the karst cave, waste of filling materials is reduced, and localized and quantitative controllable treatment is achieved. The fluidity of the filling slurry is 220-300 mm, so that the filling slurry can be in a flow state and flow among complex gullies in the karst cave, filling of the karst cave is achieved, and the filling strength is improved.

The invention provides a black soil water seepage capacity simulation test device, and relates to the technical field of simulation test devices, the black soil water seepage capacity simulation test device comprises a mounting mechanism, a movable block can drive a main body to realize angle adjustment on a base through a bottom rod by rotating a screw rod in an inner groove, and water seepage and water holding capacity of soil under different slope conditions can be accurately simulated; simulation experiments can be carried out on both gentle slopes and abrupt slopes by means of the device, solid technical support is provided for all-around research on the water seepage and water holding capacity of soil, and the problems that most simulation test devices at the present stage have congenital limitations on design architecture, can only detect the water seepage and water holding capacity of soil under the condition of flat ground, and cannot detect the water seepage and water holding capacity of soil under the condition of flat ground are solved. However, the actual black land landforms are complex and diverse, a large number of landforms with slopes, such as gentle slopes of hilly lands and slopes of gully edges, exist, and due to the fact that an existing device cannot simulate the water seepage and water retention conditions of soil on the landforms with the slopes, the obtained simulation test results are too one-sided.

The invention discloses an erosion gully treatment method, and relates to the technical field of agricultural production. According to the method, differentiated treatment measures are implemented according to the size difference of the gullies. A slope fixing and impact reducing technical mode is adopted for a large erosion gully with the width exceeding 2 m; and for the small erosion gully with the width smaller than 2m, a straw / rock ballast landfill and second ploughing technical mode is adopted. By means of the comprehensive treatment method, farmland water and soil loss can be effectively prevented, the utilization efficiency of farmland water and soil resources is improved, and remarkable positive influences are achieved on comprehensive treatment of black land and improvement of the national grain production capacity.

The utility model belongs to the technical field of collapsible foundation reinforcement, and relates to a lateral water seepage prevention and treatment structure for gully high fill engineering, which comprises an original slope body, a fill body and a gully, the gully is positioned below the ground level of the original slope body, and the gully penetrates through a plurality of staggered underground soil layers and opposite water-resisting layers below the ground level of the original slope body along the depth direction; a seepage well which is vertically and downwards arranged from the ground is arranged in the valley, the ground position of the seepage well is located at the boundary of the original slope and the fill body and faces one side of the fill body by at least two meters, and the seepage well at least penetrates through one opposite water-resisting layer and further at least penetrates through a seepage horizontal flowing layer or a water-resisting layer which is 10 meters below the bottom of the fill body; the lateral dredging channel is formed through the seepage well, underground seepage water is dredged and drained to a seepage water horizontal flowing layer or a water-resisting layer at the deeper position of the fill body, the fill body is prevented from sinking or deforming, the common lateral seepage problem in the fill project is effectively solved, and the precision and the effect of seepage water prevention and control are improved.

The invention provides a visual target device for monitoring large-fall gully surface collapse and a layout method, and relates to the technical field of geological disaster monitoring. The device comprises: a target; a target protection cover, wherein the target is fixedly arranged in the target protection cover; the target protective cover is fixedly arranged at one end of the buffer reset connecting rod; the supporting and fixing platform is arranged at one end, far away from the target protective cover, of the buffering and resetting connecting rod, is used for supporting the target protective cover and is fixed on the earth surface of the large-fall gully; when the target protection cover is impacted by an external disaster source, the buffer reset connecting rod generates elastic deformation to absorb and disperse the impact force, and drives the target protection cover to restore to the original position when the impact is finished. According to the scheme, the continuity, accuracy and reliability of surface collapse dynamic monitoring can be improved.

The application discloses a geomorphologic stage division and DEM construction method based on space-time indexes, relates to the technical field of surveying and mapping, remote sensing and geographic information processing, and comprises the following steps: firstly, high-resolution DEM is spatially cropped, independent watershed samples are extracted, and topographic elements such as valley lines, ridge lines, gully lines and watershed boundary lines are extracted from the samples, which are spliced with the DEM to construct image pairs; secondly, four types of space-time indexes, including area-elevation integration, main gully branch gully ratio, gully density and surface roughness, are calculated for each sample, weights are assigned to the indexes in combination with expert knowledge, and the samples are divided into the juvenile stage, the mature stage and the old stage according to the weighted results to obtain a space-time dataset; finally, a CGAN network is trained in stages to generate high-resolution DEMs in different development stages; through scientific geomorphologic stage division, the expression ability of the model to terrain details is improved, and the adaptability and interpretability to different geomorphic evolution stages are also enhanced.

The present invention provides a black soil water seepage capacity simulation test device, which relates to the technical field of simulation test devices, including: a mounting mechanism, wherein by rotating a screw in an inner groove, a movable block can drive a main body to realize angle adjustment on a base through a bottom rod, thereby accurately simulating the water seepage and water holding capacity of soil under different slope conditions. Whether it is a gentle slope or a steep slope, the present invention can be used to carry out simulation experiments, thereby providing solid technical support for the all-round research on soil water seepage and water holding capacity, and solving the problem that most simulation test devices at this stage have inherent limitations in their design architecture, and can only detect the water seepage and water holding capacity of soil under flat ground conditions. However, the actual black soil landform is complex and diverse, and there are a large number of terrains with slopes, such as gentle slopes in hilly areas, slopes at the edge of gullies, etc. Since the existing devices cannot simulate the water seepage and water holding conditions of soil on such sloped terrains, the obtained simulation test results are too one-sided.

The present invention relates to the technical field of soil environmental protection, and specifically relates to a method and system for monitoring the depth of soil erosion gullies based on photogrammetry. The present invention analyzes the length of existing shadows through the orthophoto images of soil erosion gullies, converts the lengths of existing shadows at different angles, and obtains the vertical shadow lengths of existing shadows; based on the vertical shadow lengths of existing shadows, analyzes the change rate of soil erosion gullies to obtain the virtual vertical shadow lengths of parallel gully areas; according to the vertical shadow lengths of existing shadows and the virtual vertical shadow lengths of parallel gully areas, obtains the measured depth of soil erosion gullies. Through the method and system of the present invention, the problem that the use of shadow length for gully depth detection fails due to the fact that soil erosion gullies are parallel to the direction of sunlight irradiation and no effective shadow can be formed is solved, the effective range of gully depth detection can be improved, and it has operability.

The application discloses a complex geological high and steep slope water drainage system and a construction method thereof. The system comprises a waterlogging pool arranged at the top of the slope, a stone retaining wall arranged in the middle of the slope, a high-pressure concrete layer and an upper anchor rod riveted in the upper slope, a drainage ditch and a lower anchor rod riveted in the lower slope, a water inlet of the drainage ditch connected with the waterlogging pool through a lower inspection well, a slope drainage pipe and an upper inspection well, and a water outlet of the drainage ditch connected with a water storage pool through a drainage ditch. The rainwater convergence and transportation efficiency are remarkably improved through the multi-node and multi-channel design. In terms of structural safety, the slope sliding and scouring damage are effectively prevented through the multiple anchoring, protection and anti-filtration drainage system. In terms of resource utilization, the drainage end is connected with the water storage facility, the rainwater can be used for agricultural irrigation, and the water resource utilization rate is improved. In terms of adaptability, the system can stably operate in the complex terrain such as the loess plateau, many gullies and steep slopes, and the safety and durability of the drainage system are remarkably improved.

The invention provides a pier anti-collision device for preventing rolling stone collision in mountainous valley, and relates to the technical field of bridge engineering.The anti-collision device comprises a protection mechanism, the protection mechanism comprises three sets of eccentric rings, and the three sets of eccentric rings are sequentially arranged on the surface of a pier from top to bottom in a sleeving mode and rotationally connected with the pier; an inner ring sleeves the outer side wall of each group of eccentric rings, crankshafts are rotationally connected in the connecting holes, three groups of cranks are arranged between the crankshafts in each group, an included angle of 120 degrees is formed between connecting lines of center shafts of the three cranks and center shafts of the crankshafts on a horizontal projection plane, and the inner rings and the cranks are arranged in a staggered manner; the device further comprises an adjusting and reinforcing mechanism, the adjusting and reinforcing mechanism comprises fixing rings, the two fixing rings are located at the upper end and the lower end of the pier correspondingly, the outer side walls of the fixing rings are sleeved with connecting rings, and the device is designed through a fracturable graded protection mechanism, so that graded response and differentiated protection strategies aiming at rolling stones of different scales are achieved.

The utility model belongs to the technical field of collapsible foundation reinforcement, and relates to a three-dimensional water seepage prevention and treatment structure for gully high-fill engineering, which comprises an original slope body, a fill body, a gully, a plurality of staggered underground soil layers and opposite water-resisting layers which penetrate through the ground level of the original slope body along the height direction, and isolation cushion layers which are attached to the gully and are arranged at the bottom and the side direction of the gully, the filling body and the original slope body are isolated on the inner side and the outer side of the isolation cushion layer through the isolation cushion layer. The isolation cushion layer sequentially comprises a cushion soil layer, a fine grain layer and a coarse grain layer in the thickness direction from inside to outside. The three-dimensional anti-seepage structure is adopted, the hidden danger of water seepage of the filling body is eliminated, it is guaranteed that the filling body is not threatened by surrounding water seepage, and the problem that after filling is completed, slope water seepage causes large-area differential settlement of a filling project, and project operation is difficult is effectively solved; therefore, the quality of a filling project is guaranteed, and large-area differential settlement in the later period is avoided.

This invention belongs to the field of water conservancy and hydropower construction technology, specifically providing a construction method for excavating a single-sided bridge across a steep folded rock face road cut. The method includes the following steps: measuring and setting out according to design drawings; fabricating steel beams and installing them at the target location in the ditch; using machinery to excavate the slope along the designed route; excavating the slope overburden and upper strongly weathered rock; excavating the lower weakly weathered rock of the pre-splitted slope, using stepped blasting for rock excavation in stages; and completing the excavation of the single-sided bridge across a steep folded rock face road cut after inspection and acceptance. This invention solves the problems of large excavation volume, difficulty for machinery to cross gullies, collapse of upper deposits, and significant construction hazards associated with existing mechanical + blasting methods for excavating steep folded rock faces. This invention features minimal over-excavation, shorter construction period, guaranteed quality, safety and reliability, and reduced ecological impact.

The application provides a collapsible loess area gully high fill foundation deformation monitoring method and system, relates to the technical field of foundation deformation monitoring, and the method comprises the following steps: acquiring foundation parameter data; acquiring multi-source monitoring data at multiple monitoring moments; acquiring foundation settlement rules according to the foundation parameter data; acquiring fusion settlement prediction values according to the multi-source monitoring data and the foundation settlement rules; acquiring a settlement health index according to the foundation parameter data, the multi-source monitoring data and the fusion settlement prediction values; and performing foundation deformation monitoring according to the settlement health index. According to the application, the accuracy of collapsible loess area gully high fill foundation deformation monitoring is improved.

The invention discloses a complex geology high and steep slope drainage system and a construction method thereof.The system comprises a waterlogging pool arranged at the top of a slope, a stone retaining wall arranged in the middle of the slope, a high-pressure concrete layer poured on the upper slope and upper anchor rods riveted and fixed to the upper slope, and a drainage channel arranged on the lower slope and lower anchor rods riveted and fixed to the lower slope; the drainage channel water inlet is connected with the waterlogging pool through the lower inspection well, the slope drainage pipe and the upper inspection well, and the drainage channel water outlet is connected with the reservoir through the drainage channel. Through the multi-node and multi-channel design, the rainwater confluence and conveying efficiency is remarkably improved; on the aspect of structural safety, slope slippage and scouring damage are effectively prevented through multiple anchoring, protection and an anti-filtration drainage system; in resource utilization, the drainage tail end is communicated with a water storage facility, it is guaranteed that rainwater can be used for agricultural irrigation, and the water resource utilization rate is increased; in the aspect of adaptability, the drainage system can stably run in complex terrains such as loess plateau, gullies and abrupt slopes, and the safety and durability of the drainage system are remarkably improved.

The invention discloses a mountain torrent ditch disaster monitoring and early warning method based on deep learning, and relates to the field of disaster early warning, and the method comprises the following steps: obtaining mountain torrent ditch region information, and collecting corresponding disaster monitoring data; analyzing and processing corresponding disaster monitoring data in the mountain torrent ditch area information, constructing a meteorological monitoring interpolation model, and setting a mountain torrent ditch area monitoring image; performing visual display on corresponding disaster monitoring data in the mountain torrent ditch area monitoring image, and obtaining dynamic monitoring change data of each coordinate point according to a visual display result; performing dynamic region division according to the dynamic monitoring change data of each coordinate point to obtain a real-time monitoring sub-region image, and performing early warning evaluation on disaster monitoring data in the real-time monitoring sub-region image to obtain disaster early warning evaluation data; performing statistical analysis on the obtained disaster early warning evaluation data to generate comprehensive disaster early warning evaluation data; according to the invention, the monitoring and early warning efficiency and accuracy are improved.

The invention discloses a geomorphic stage division and DEM construction method based on an air substitution time index, and relates to the technical field of surveying and mapping remote sensing and geographic information processing.The method comprises the steps that firstly, space cutting is conducted on a high-resolution DEM, an independent watershed sample is extracted, terrain elements such as a valley line, a ridge line, a channel line and a watershed boundary line are extracted from the independent watershed sample, the terrain elements are spliced with the DEM, and an independent watershed model is obtained; constructing an image pair sample; secondly, for each sample, calculating four types of air generation time indexes including area elevation integral, main ditch-branch ditch ratio, gully density and surface roughness, giving weights to the indexes in combination with expert knowledge, and dividing the samples in the juvenile period, the adulty period and the old period according to a weighting result to obtain an air generation time data set; and finally, training the CGAN network in stages, and generating high-resolution DEMs in different development stages. Through scientific landform development stage division, the expression ability of the model to landform details is improved, and the adaptability and interpretability to different landform evolution stages are also enhanced.