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637 results about "Slope gradient" patented technology
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Slope gradient is the angle of inclination of the soil surface from the horizontal. It is expressed in percent, which is the number of feet rise or fall in 100 ft. of horizontal distance. Importance of slope. Slope gradient is important because it influences the rate at which runoff flows on the soil surface and erodes the soil.
Gradient structures interfacing microfluidics and nanofluidics, methods for fabrication and uses thereof
ActiveUS7217562B2Improve throughputReduces the local entropic barrierMaterial nanotechnologyNanostructure manufactureVertical gradientMicrofluidics
The present invention relates to a device for interfacing nanofluidic and microfluidic components suitable for use in performing high throughput macromolecular analysis. Diffraction gradient lithography (DGL) is used to form a gradient interface between a microfluidic area and a nanofluidic area. The gradient interface area reduces the local entropic barrier to nanochannels formed in the nanofluidic area. In one embodiment, the gradient interface area is formed of lateral spatial gradient structures for narrowing the cross section of a value from the micron to the nanometer length scale. In another embodiment, the gradient interface area is formed of a vertical sloped gradient structure. Additionally, the gradient structure can provide both a lateral and vertical gradient.
Owner:PRINCETON UNIV
Indoor analog experiment device for roadbed slope erosion
InactiveCN103245772AAdequate test basisSimple structureEarth material testingPropellerAgricultural engineering
The invention discloses an indoor analog experiment device for roadbed slope erosion. The indoor analog experiment device comprises a movable liftable slope analog device and an artificial rainfall analog device, wherein the movable liftable slope analog device comprises a base device, a panel groove device and a slope gradient adjusting device, the base device and the panel groove device are connected together through a movable hinge, and the panel groove device can rotate freely around the hinge; the artificial rainfall analog device comprises a water supply device, a support device and a spraying device, the water supply device comprises a water supply pool, a water pipe, a water pump, an adjusting valve, a branch valve and a hydrometric propeller, the support device comprises movable wheels, an expansion bracket, a transverse support rod and a longitudinal support rod, and the spraying device comprises a water guide pipe and a prayer head. According to the indoor analog experiment device, a large amount of roadbed slope erosion data is obtained under different working conditions and different rainfall conditions within a short period of time. The indoor analog experiment device is simple in structure, convenient to operate, safe and reliable, low in cost and high in efficiency, and is convenient to popularize and apply.
Owner:HUNAN UNIV
Protection method for high and steep side slope ecological restoration technology
InactiveCN105297745APermanent natural succession functionNo secondary damageExcavationsHorticultureVegetationEcological environment
The invention relates to a protection method suitable for the high and steep side slope ecological restoration technology. The protection method is characterized by comprising the following steps that, 1, the slope surface is tidied, and a side slope is measured; 2, an anchor rod is driven into a high and steep side slope and grouting is conducted for support; 3, vertical and horizontal support lines are installed, and a grille net is laid and hung on the slope surface; 4, a steel wire rope net is laid and hung on the grille net; 5, an angle steel bracket is installed, in addition, the angle steel is fixedly welded with the anchor rod; 6, a gabion mesh and a nutrient geotextile are laid in a layered mode; 7, primary level vegetation concrete is seeding-sprayed; 8, a nutrient substrate is seeding-sprayed on the primary level vegetation concrete; 9, top-level vegetation concrete is seeding-sprayed on the nutrient substrate; 10, an independent planting groove is formed in the top-level vegetation concrete to plant seedlings; and 11, maintenance and management are conducted. According to the protection method for the high and steep side slope ecological restoration technology, the ecological restoration problem of the side slope with the slope being greater than 60 degrees can be solved effectively, the ecological environment is restored, and a new method is provided for solving the problems of high and steep side slope ecological restoration and side slope stability.
Owner:青岛润国生态科技发展有限公司 +1
Glacier lake outburst pre-warning method
The invention belongs to the field of debris flow prevention and control engineering and hydraulic engineering and relates to a glacier lake outburst pre-warning method. A potential outburst glacier lake serves as a pre-warning monitoring region, a glacier tongue slope alpha and a glacier slope direction theta of the potential outburst glacier lake are measured and determined, meteorological data are examined to determine the average positive accumulated temperature Ty2 of glacier lake outburst points in the last two years and the many-year average positive accumulated temperature Ty of glacier lake outburst points, the positive accumulated temperature T0 before certain time and the average temperature sum T7 of seven days before the time are monitored in real time, and with a pre-warning monitoring region glacier lake outburst critical value Cr as a monitored value, glacier lake outburst pre-warning levels are divided according to the monitored value. According to the glacier lake outburst pre-warning method, the internal mechanism of the glacier lake outburst happening degree is researched by researching temperature factors and terrain factors, and a glacier lake pre-warning and forecasting model is established; influences of the temperature factors and the terrain factors on a glacier lake outburst are comprehensively considered, and the glacier lake outburst is forecast quantitatively.
Owner:CHENGDU UNIVERSITY OF TECHNOLOGY
Method and device for simulating axial interaction between undersea pipe system structure and seabed soil body
InactiveCN103969068AChange surface roughnessImprove surface roughnessStructural/machines measurementData synchronizationClassical mechanics
The invention discloses a method and device for simulating axial interaction between an undersea pipe system structure and a seabed soil body. The method includes the following steps that a model pipeline is selected, counterweight is conducted on the model pipeline according to the requirement, and then a tension sensor for measuring axial sliding resistance of the model pipeline is installed in the model pipeline; a water tank is selected, and a simulated seabed with the needed slope is manufactured in the water tank; a guide restraint device is installed on the model pipeline, the model pipeline is made to horizontally move only in the axial direction of the model pipeline and the direction perpendicular to the bed surface of the simulated seabed, meanwhile a displacement measurement device for measuring displacement of the model pipeline in the axial direction of the model pipeline and the direction perpendicular to the bed surface of the simulated seabed is installed on the guide restraint device, and the model pipeline is arranged on the simulated seabed; axial loading is conducted on the model pipeline, the model pipeline is made to axially slide, and meanwhile a data synchronous acquisition system is used for synchronously acquiring measurement data. An ideal means is provided for research on axial interaction between an undersea pipeline and the seabed.
Owner:INST OF MECHANICS - CHINESE ACAD OF SCI
Coastal saline-alkali soil terrace type afforesting method for improvement of dredger fill
InactiveCN103262689AConducive to storageFull rinseSoil lifting machinesClimate change adaptationTerrainAlkali soil
The invention discloses a coastal saline-alkali soil terrace type afforesting method for improvement of dredger fill. The coastal saline-alkali soil terrace type afforesting method for improvement of the dredger fill comprises water seepage ditches, foundation terrain dredger fill, straw curtains, geotechnical cloth, improved planting soil, local models and the like, wherein square seepage ditches of the water seepage ditches are longitudinally excavated in the lowest position of the foundation terrain dredger fill, particle-size ballast stones are filled into the square seepage ditches, the distance between the foundation terrain dredger fill and the ground is 1-1.5m, the gradient of the foundation terrain dredger fill is 15 degrees to 30 degrees, straw is distributed on the foundation terrain dredger fill, the geotechnical cloth is laid on the straw curtains, and then the improved planting soil is laid on the geotechnical cloth. Due to the fact that the coastal saline-alkali soil terrace type afforesting method for improvement of the dredger fill is combined with the terrace type shape, the coastal saline-alkali soil terrace type afforesting method for improvement of the dredger fill is beneficial to retaining rainwater, enables salinity to be effectively leached and reduced, is beneficial to fertilizer and soil conservation, and enables the survival rate of landscape plants to be more than 90%, the waste is effectively utilized, natural resources are protected, and afforesting cost is reduced by more than 50%.
Owner:TIANJIN TA LANDSCAPE PLANNING & DESIGN CO LTD
Measuring method for researching runoff and sediment production rule of overland flow and underground pore fracture flow
Owner:GUIZHOU UNIV
Method for spraying to green side slope of hard rock with joints being not developed
InactiveCN103250536AMeeting nutritional needsEasy to store waterHorticulture methodsEcological environmentSoil science
A method for spraying to green a side slope of hard rock with joints being not developed comprises the steps of processing a slope surface, setting up a simple scaffold, using a compressed air drilling machine for drilling vegetative holes, filling nutrient soil in the vegetative holes, laying a metal net and binding vegetative strips, spraying and seeding matrix materials which can instantly make artificial soil with good water stability performance in the slope surface, and conducting necessary maintaining management in the seedling stage of plants. The method is a spray-seeding technology directing at the side slope of the hard rock with the joints being not developed, and common construction methods can not be implemented on the slope surface of the type. The method for spraying to green the side slope of the hard rock with the joints being not developed has the advantages of being simple, strong in operability, low in cost and suitable for various hard rock side slopes with the gradient less than 80 degrees. After spray-seeding, phytocoenosium is formed, wherein ligneous plants are mainly included, shrub and herbaceous plants are combined, the phytocoenosium is long lasting and stable, and is in harmony and consistency with the surrounding ecological environment, after closing of the plants, cultivating does not need any more, and the slope surface of the hard rock with the joints being not developed can be greened and beautified permanently.
Owner:青岛冠中生态股份有限公司
Vehicle speed control system and vehicle speed control method of vehicle
ActiveUS20100100295A1Increase speedIncrease rapidlyVehicle fittingsDigital data processing detailsSpeed control systemControl system
If a condition for finishing speed limit control is satisfied, a gradient of a slope of the road is estimated based on a steady component of the longitudinal acceleration of the vehicle, and a correction factor is computed based on the slope gradient of the road, while a target acceleration of the vehicle is computed based on the vehicle speed. Then, a target vehicle speed is computed by adding the target vehicle speed of the last cycle to the product of the correction factor, target acceleration and the cycle time of the control, and the braking or driving force of each wheel is controlled so that the vehicle speed becomes equal to the target vehicle speed. In this manner, a passenger of the vehicle is prevented from feeling uncomfortable about the speed increase after the completion of the vehicle speed limit control.
Owner:TOYOTA JIDOSHA KK +1
Method for building orchard via building soil at bare purple rock sloping fields
InactiveCN102172156AConducive to changing barrennessConducive to changing the economyCultivating equipmentsHorticultureFruit treeSoil science
A method for building orchard via building soil at bare purple rock sloping fields comprises the following steps of: (1) selecting purple shale interbedding bare rock or purple shale bare rock gentle sloping fields with gradients of less than 15 degrees at the southeast slope of purple rock hillock to be used as the object for orchard soilbuilding; (2) delimiting explosion lines and shot hole points at the selected soilbuilding sloping fields along the contour line; (3) performing two times of layered directional explosions in spring, and stacking thin layers to form ditches, connecting the ditches with drainage ditches; (4) stirring the gravels in thin piles 1-2 times in high temperature seasons like summer and autumn; (5) backfilling the weathered broken gravels and half-weathered materials and weathered materials in next autumn, and filling organic fertilizers; (6) building horizontal ladder soils at the same height; (7) importing new soil and fertilizing according to standards, and importing fine granular soils; (8) after fruit trees are planted, turning over the surface soil layer; (9) interplanting crops, increasing the soil fertility, wherein watermelon and leguminous crops are planted in the first two years for improving soil fertility; and 1000-1500 kg of livestock and poultry manures are applied in every 667m<2> for interplanting watermelon. By adopting the invention, soils can be built in the bare purple rock sloping fields, and orchard is built; the purpose of recycling and highly-efficient utilization of the lands difficult to use in purple rock areas is realized.
Owner:谢庭生
Construction method capable of measuring panoramic picture
InactiveCN102096938AMeasurable realizationTrue reactionImage analysis3D-image renderingScale-invariant feature transformStereo cameras
The invention relates to a construction method capable of measuring a panoramic picture, which comprises the following steps of: 1) performing cylindrical projection on horizontal view angle original pictures acquired by a stereoscopic camera in a 360-degree range; 2) extracting control points from cylindrical pictures after the cylindrical projection by adopting a scale-invariant feature transform (SIFT) algorithm, and then calculating relative postures of other pictures through the control points by taking one of the pictures as a basis; 3) splicing the cylindrical pictures after the cylindrical projection according to the relative postures of the other pictures to generate the panoramic picture; and 4) reversely projecting the panoramic picture to a plane, establishing a linkage relationship of the panoramic picture and the original pictures, then selecting any point on the panoramic picture to obtain pixel coordinates of the point on the original pictures through inverse computation, and finally measuring the coordinates, the distance and the slope gradient of the point according to calibrated stereoscopic camera parameters through a forward intersection principle. The construction method not only realizes the measurement of the panoramic picture, but also can actually reflect three-dimensional geographic information.
Owner:REMOTE SENSING APPLIED INST CHINESE ACAD OF SCI
Deviation rectifying method for pile foundation architecture inclination
ActiveCN101307609AEasy to implementEasy to control the correcting processFoundation engineeringObservation pointCorrection method
The invention relates to a correction method for a pile foundation building after tilted. The correction method comprises the following construction steps that: six observation points are arranged on a roof floor of the building; inclination values of various points are measured and the maximum inclination value is taken; the settling amount of the building in the inclined direction and the settling amount of the building opposite to the inclination direction are calculated; the hole pitch of core drawing holes and the number of the core drawing holes arranged are calculated; the settling amount of each core drawing hole provided during the correction process is calculated; a first batch of the core drawing holes are arranged and silt in the holes is drawn out, and then the building is settled opposite to the inclination direction; the sedimentation values of the six points are measured after 24 hours, and the daily average sedimentation speeds of three pairs of the observation points are calculated and are all less than or equal to 10 millimeters per day; a second batch of the core drawing holes, a third batch of the core drawing holes and a fourth batch of the core drawing holes are arranged and measured according to the same method as the first batch; when the slope gradient of a point with the maximum inclination value among the six observation points is less than or equal to 0.3 percent of the safety standard and is still less than the safety standard after 90 days, the correction operation is over. The method is easy to implement and has high precision and low cost.
Owner:江苏华都建设有限公司
Angle slope level indicator and uses thereof
Owner:HORUS VISION
Combinational control method of gear shift by automatic mechanical transmission (ATM ) system of electric automobile running on upslope
InactiveCN102425657ASmooth shiftingImprove ride comfortGearing controlMotor driveAutomatic transmission
The invention provides a combinational control method of gear shift by an automatic mechanical transmission (ATM) system of an electric automobile running on an upslope. The method comprises the following steps: a control system of a motor drive system monitors in real time and stores motor rotating speed; when shifting gear, the AMT system sends a gear shift effective signal to the motor drive system; after the AMT system has finished gear shift, the motor drive system uses the speed difference before and after gear shift to calculate slope gradient, and thereby calculating the current running resistance of the automobile; the motor drive system performs calculation according to the current running resistance and the maximal torque of the motor drive system to obtain a required variable peed ratio of the AMT when the automobile currently runs; and the motor drive system sends the variable speed ratio obtained by calculation to the AMT system, and then the AMT system regulates the gear of the automobile. Therefore, by adopting the method provided by the invention, successful gear shift can be realized when the electric automobile is running on the upslope, and running smoothness of the automobile can be improved.
Owner:BEIJING INSTITUTE OF TECHNOLOGYGY
Arsenic sandstone slope treating method
InactiveCN103821153AHigh spray construction efficiencySpray construction efficiency is convenientExcavationsVegetationSoil science
The invention discloses an arsenic sandstone slope treating method and mainly applies to conservation of water and soil, vegetation and stabilization treatment of the arsenic sandstone slope. The arsenic sandstone slope treating method includes a steep slope treatment process, a slope crest treatment process and a slope base treatment process. The slope treatment process includes excavating a catchwater at the position distant from the slope crest by 1-3m, and excavating fish-scale pits at the position of the catchwater distant from the abrupt slope by more 2m; spraying resin solution in 5-15% concentration onto rock soil between the catchwater and the top edge of the slope to form a water-resisting layer. The steep slope treatment process includes dividing the slope into a steep slope, a moderate slope and a gentle slope according to the gradient of the slope; spraying different concentrations of resin solution on the surface of the slope according to different slopes. The slope base treatment process includes spraying the resin solution in 3-5% concentration on the surface of the slope base to form a greening layer, and planting herbaceous plants and woody plants. Compared with the prior art, the arsenic sandstone slope treating method has the advantages of high efficiency and convenience in resin spraying and construction, stability in the slope after implementation and the like.
Owner:SOUTHEAST UNIV +1
Terrain geometric parameter extraction method based on hierarchical elevation cloud atlas
ActiveCN108389255AThe method of automatic identification is simpleSimple method3D modellingColor mappingImaging processing
The invention relates to a terrain geometric parameter extraction method based on a hierarchical elevation cloud atlas, which comprises terrain classification and recognition, terrain simplification and terrain geometric parameter extraction processes. For a 401*401 DEM grid terrain specified in the digital map of the GeoTIFF format of the ASTER GDEM type, the relative height is first calculated to divide the terrain into five types: the plain, the hill, the low mountain, the middle mountain, and the high mountain through programming; the hierarchical elevation cloud atlas of the specified terrain is obtained through elevation layering and color mapping; the eight neighborhood boundary tracking algorithm is used in image processing to obtain the terrain bottom surface boundary, the bottomsurface area and the center of the bottom surface, and the color representing the maximum elevation interval is identified to obtain the average elevation of the highest area of the terrain; finally,the geometric parameters of the plain, spherical crown, cone and wedge shape of the terrain simplified geometric model are obtained by combining the terrain classification, the calculation of the bottom shape factor and the slope calculation. The invention has the advantages of simple method, small calculation amount, real-time performance and practicality.
Owner:XIDIAN UNIV
Space-time conversion exploitation method for high and steep rock slope stock ground near river
InactiveCN101644157APrevent rollingGuaranteed supplyUnderground miningClimate change adaptationTerrainYard
The invention relates to a space-time conversion exploitation method for a high and steep rock slope stock ground near a river, aiming at the situation of very hard exploitation condition with steep terrain in the direction along the river of the high and steep rock slope stock ground near the river, and the gradient along the river is more than 50 degrees. In the invention, terrain creases on the halfway up the mountain are sufficiently utilized according to the principle of space-time conversion; a ballast cutting slot is excavated in advance in the direction along the river of a strip stock ground, and ballast storing space is reserved on the upper part of the high and steep rock slope yard near the river; and the vertical excavation and transportation with extreme difficulty of the upper part of the yard is converted to the relatively easy horizontal space excavation and transportation with excavating ballast materials on the upper part and sliding to the creases on the halfway upthe mountain. A winze is arranged in the proper position of the ballast cutting slot, and excavated materials slide to smashing equipment through the winze to be smashed. A ballast blocking pit is reserved outside the ballast cutting slot and is heightened, and a high stone blocking pit is arranged at the foot of the mountain along the river for preventing rock ballast from rolling to the river. The invention achieves the goals of preventing river jam and ensuring the safe and normal excavation of the high and steep rock stock ground.
Owner:CHINA GEZHOUBA GROUP NO 5 ENG
Overflow water level warning method for glacial lake outburst and application thereof
ActiveCN107749144AImprove the accuracy of early warningImprove applicabilityHuman health protectionAlarmsCalculated resultWidth ratio
The invention discloses an overflow water level warning method for glacial lake outburst, which comprises the following steps: (a) the thickness T of the top of an ice trace dam, the width b of the outburst mouth, the average width w0 of a glacial lake, the length-to-width ratio c of the glacial lake, the average slope Beta of the shore slope of the glacial lake before outburst, and the characteristic particle size d of incipient sediment are surveyed; (b) the critical overflow water depth H of glacial lake outburst is calculated; and (c) the water level of the glacial lake above the overflowmouth rises suddenly for more than 30s, and when HCr<0.6H, there is very small probability that the glacial lake bursts; when 0.6H<=HCr<0.8H, there is small probability that the glacial lake bursts; when 0.8H<=HCr<H, there is medium probability that the glacial lake bursts; and when the HCr>=H, there is large probability that the glacial lake bursts. The method fully considers the factors influencing the critical overflow water depth of glacial lake outburst. The calculated result is more in line with the actual situation. The accuracy of warning is high. The method is of higher applicability.
Owner:CHENGDU UNIVERSITY OF TECHNOLOGY
Design method and use of transversal dentated sill embedded depth of foundation based on debris flow soft foundation energy dissipating
InactiveCN101463593AAchieving a dynamic balance of scour-sedimentationLong-term safe operationClimate change adaptationMarine site engineeringEngineeringDrainage canal
Owner:INST OF MOUNTAIN HAZARDS & ENVIRONMENT CHINESE ACADEMY OF SCI
Repair treatment method of mine
The invention discloses a repair treatment method of a mine. The method comprises following steps of mountain slope cutting and side-benching; slope green retrieving; slope toe retaining wall construction; slope toe backfill greening; intercepting ditch construction; and later maintenance. During mountain slope cutting and side-benching, the mountain gradient is larger than or equal to 60 degrees,during slope green retrieving, according to whether the slope is a slope cutting area, the slope is divided into a spray sowing treatment area and a fish-scale pit planting area; a backfilling area is arranged on the side, close to the mountain, of a constructed slope toe retaining wall, and the backfilling material is stone generated by mountain slope cutting and side-benching; through the abovescheme, mountain slope cutting and side-benching can adapt to the mountain with the larger gradient, the stability of vegetation retrieving is improved, the constructed slope toe retaining wall can improve the stability of the mountain, disasters of landslide and the like are reduced, meanwhile, stone generated by slope cutting and side-benching is adopted in backfilling of the slope toe retaining wall, and can be well used, and pollution and transport cost is reduced.
Owner:湖北安达泰建设工程有限公司
Risk judgment method for rock landslide and application of risk judgment method
The invention discloses a risk judgment method for a rock landslide and the application of the risk judgment method and belongs to the technical field of landside control projects. The risk judgment method for the rock landslide is characterized by comprising the following steps that a, basic topographic data of a landslide mass are determined through field investigation and mapping, and the basic topographic data include the landslide mass gradient alpha, the landslide mass area A, the landside mass upper side face area Au, the landside mass upper side face gradient beta, the landslide mass left side face area AL, the landslide mass left side face topographic undulating gradient theta1, the landslide mass right side face area AR and the landslide mass right side face topographic undulating gradient theta2; b, the steep terrain factor U and the two-side comprehensive factor C are calculated; c, the terrain comprehensive judgment factor T is calculated; and d, the risk grades of the rock landslide are classified. According to the risk judgment method for the rock landslide and the application of the risk judgment method, topographical influence factors of the rock landslide are taken into comprehensive consideration, the risk area of the rock landslide is accurately classified in a quantitative mode, the accuracy of the risk judgment of the rock landslide is greatly improved, and a good landslide early-warning effect is achieved.
Owner:CHENGDU UNIVERSITY OF TECHNOLOGY
Composite method for controlling rill erosion of slope farmlands
InactiveCN102177776AOvercome buildingOvercome costsClimate change adaptationAgriculture gas emission reductionVegetationRill erosion
The invention discloses a composite method for controlling the rill erosion of slope farmlands, which realizes soil and water conservation of the slope farmlands by utilizing comprehensive engineering measures and plant measures, and relates to the fields of the improved utilization of sloping fields and the prevention and control of soil erosion. By means of the theory that rills are eroded by sloping surfaces to form critical slope length, terrace banks are constructed by separation distance which is less than or equal to Lc among the sloping surfaces along a contour line according to the critical slope length formed by the rill erosion by the sloping fields, namely the rills are eroded under the condition that the specific slope farmlands are less than the current gradient to generate the separation distance with critical slope length values, the terrace banks are designed and constructed along the contour line, and vegetation zones are planted on the constructed terrace banks to form a layout mode that small units of the sloping surfaces, the terrace banks of the sloping surfaces and the vegetation zones coexist; and the critical slope length Lc formed by the rill erosion by the sloping fields can be obtained by measuring on site in a mode of natural rainfall or artificial rainfall, and also can be obtained by theoretical calculation.
Owner:INST OF MOUNTAIN HAZARDS & ENVIRONMENT CHINESE ACADEMY OF SCI
Full-section rock ripper for long-distance heavy-gradient inclined shaft
ActiveCN102704945AEnsure safetySolve a lot of water gushingUnderground chambersTunnel liningSlagEngineering
The invention discloses a full-section rock ripper for a long-distance heavy-gradient inclined shaft. The full-section rock ripper comprises a shield body, a handpiece arranged on the front end of the shield body and composed of a cutterhead and a main driving system, a cutterhead capable of rotating in two directions to discharge slag, an excavation cabinet located behind the cutterhead, a sealable slag receiving hopper and an anti-surge door, which are arranged in the excavation cabinet, a stabilizer arranged at the top part in the shield body, a propelling oil cylinder arranged in the shield body and hinged with the handpiece, an explosion proof drainage system, an explosion proof ventilating and dedusting system and a mainframe belt conveyor, wherein the full-section rock ripper further comprises a duct piece assembling machine arranged at the back end of the shield body, an assorted back belt conveyor connected with the mainframe belt conveyor and a quick material pouring and conveying system. The full-section rock ripper disclosed by the invention can effectively solve such problems in the long-distance heavy-gradient inclined shaft as burst of massive water and harmful gases, tunneling speed and efficiency, auxiliary material transport, mainframe overturning and lateral rolling of mainframe.
Owner:CHINA RAILWAY CONSTR HEAVY IND
Intelligent early warning and forecasting method for soil slope dangerous situations
ActiveCN111504268AAccurate predictionPrediction is accurateRainfall/precipitation gaugesTransmission systemsEnvironmental resource managementLandslide
The invention discloses an intelligent early warning and forecasting method for soil slope dangerous situations. , belongs to the technical field of geology, and aims to provide an intelligent early warning and forecasting method for soil slope dangerous situations, which can accurately forecast soil slope dangerous situations, and is characterized by comprising the following steps: S1, selectinga monitored slope area, and dividing a slope into a plurality of monitoring areas according to a finite element method; S2, establishing an information acquisition system and a dangerous case prediction system, and acquiring the height, gradient and area of the monitored area through the information acquisition system; and S3, enabling the information acquisition system to send the monitoring areas to the dangerous case prediction system in a wireless mode. A soil permeameter and a displacement meter acquire the soil permeability and the soil displacement of the monitoring areas in real time;the information obtaining system obtains the heights, gradients and areas of the monitoring areas in real time, then a three-dimensional model is established through the dangerous case prediction system, the three-dimensional model obtains various parameters in real time, the slope is dynamically predicted, and prediction of the possibility of slope landslide is more accurate.
Owner:深圳市地质局 +1
Small-radius curve large-slope shield construction method in coastal soft soil stratum
ActiveCN104389615AImprove construction qualityFine constructionUnderground chambersTunnel liningDisplacement controlEngineering
The invention discloses a small-radius curve large-slope shield construction method in a coastal soft soil stratum. The construction method comprises the two following major steps of an axial line control measure and a duct piece displacement control measure, wherein in an axial line control measure, the precorrection regulation on a shield machine needs to be firstly carried out; an overbreaking cutter is set; a proper duct piece is selected; the duct piece deviation correction is carried out; the shield posture precorrection is needed in a duct piece displacement control measure; the total thrust is reduced; a grouting hole position is set; and finally, a duct piece screw bolt is tightened again in time in the tunneling process. The construction method has the advantages that the shield axial line control and dust piece control measures and methods in the coastal special soft soil stratum are comprehensively stated from all aspects, so that the goal of fine construction is achieved, and the shield tunnel construction quality is improved; and meanwhile, the method provides the guidance opinion and reference for the shield construction in similar strata under similar conditions.
Owner:THE SECOND CONSTR OF CTCE GROUP
Stepped horizontal subsurface flow constructed wetland combined system and application thereof
ActiveCN105198085ASimple structureEasy constructionSustainable biological treatmentBiological water/sewage treatmentConstructed wetlandTerrain
The invention relates to a stepped horizontal subsurface flow constructed wetland combined system and application thereof. The combined system is built along clinoform and comprises multiple stages of stepped horizontal subsurface flow constructed wetland units which are distributed in a stepped mode from top to bottom according to the slope gradient, and a pipe network unit through which all the stages of stepped horizontal subsurface flow constructed wetland units are communicated. The side face water inlet mode is adopted for the stepped horizontal subsurface flow constructed wetland units. Water flow in the stepped horizontal subsurface flow constructed wetland units horizontally flows in the length direction of the stepped horizontal subsurface flow constructed wetland units. Compared with the prior art, the limitation of terrains on application of constructed wetlands is broken through, slope space can be fully used, the structure is simple, construction is easy and convenient, cost is low, the stepped horizontal subsurface flow constructed wetland combined system and application can be widely applied to processing of various types of sewage such as domestic sewage, municipal sewage, industrial wastewater, animal husbandry sewage, agricultural surface resource pollution, surface flow and tail water of sewage treatment plants in slope areas such as mountainous regions, hills and water body banks, and the application range of constructed wetlands is greatly widened.
Owner:TONGJI UNIV
Method and system for early warning mountain flood debris flow based on steep slope convergence and cross section flow calculation
The invention provides a method for early warning mountain flood debris flow based on steep slope convergence and cross section flow calculation. The method comprises the following steps of: (1) processing high-precision DEM terrain data and remote sensing data of debris flow single ditches and flow domains where the debris flow single ditches are located, so as to obtain a scattered point elevation and a slope of each grid unit; (2) obtaining a rainwater infiltration amount of each grid unit by combining with continuous long-term rainfall data, according to actual geological conditions of different debris flow ditches; (3) calculating surface flow concentration of the debris flow ditches and the flow domains where the debris flow ditches are located using a calculation method based on thesteep slope flow convergence; and (4) performing early warning base on flooding range of the mountain flood debris flow corresponding to the rainfall amount in different time periods. The invention further provides a system for early warning the mountain flood debris flow. The method and the system are applied to early warning of mountain flood and valley type debris flow. The effects are obviouson the early formation of the early warning result for the mountain flood debris flow and the improvement of the early warning efficiency. It has great practical significance for safeguarding personnel, emergency hedging, and reducing lives and property losses of people.
Owner:李潇 +2
Multifunctional geotechnical model testing system and method
PendingCN107907662ASave spaceEasy to testPreparing sample for investigationEarth material testingRainfall simulationSoil science
The invention provides a multifunctional geotechnical model testing system and method and relates to a geotechnical model testing system and method, aiming at solving the problem that an existing model box cannot simulate conditions of a temperature field. The multifunctional geotechnical model testing system comprises an outer framework, the model box, a rainfall simulation mechanism, a refrigerating mechanism, a heating mechanism and a data acquisition system, wherein the model box is mounted on the outer framework; a water outlet of the rainfall simulation mechanism is arranged at the top of the model box; the refrigerating mechanism and the heating mechanism can provide environment temperature to the model box; the data acquisition system is used for acquiring frozen soil working condition indexes in the model box. The method comprises the following steps: 1, determining the size and the model similarity ratio of the model box and the length and the slope ratio of a roadbed model;2, preparing a soil body material for simulation; 3, establishing a corresponding simulation procedure; 4, acquiring and displaying data. The multifunctional geotechnical model testing system and method are used for a frozen soil test.
Owner:NORTHEAST FORESTRY UNIVERSITY
Novel open-pit mining method suitable for steep slope topography
InactiveCN106869936ASimple processSolve difficult construction problemsOpen-pit miningOpen-pit miningSteep slope
The invention discloses a new open-pit mining method suitable for steep slope terrain. The steep slope terrain is divided into 2 to 4 steps, the stripping operation surface is arranged along the strike, and a vertical strip L is divided every 14 to 16m in the vertical strike direction. , the step height H is not greater than 1.5 times the maximum excavation height of the hydraulic excavator (10), and the width of the bottom loading platform (11) is greater than 18m, so as to meet the operation requirements of the mine transport vehicle (12), implement single-step operation, blasting operation Finally, the hydraulic excavator (10) is used for mining from top to bottom, from outside to inside, and gradually advances to the final side. The ore is unloaded to the bottom by the hydraulic excavator (10) from top to bottom, from inside to outside The loading platform (11) is transported out through the mining transport vehicle (12). The invention has the advantages of simple process, easy-to-obtain equipment, safety and feasibility, and effectively solves the problems of large steep slope terrain, impossibility to build transportation roads, and difficult construction when conventional step mining is adopted.
Owner:SINOSTEEL MAANSHAN INST OF MINING RES
Forming method of large shallow foundation pit with soft soil foundation
InactiveCN101565949AReduce slippageImprove securityExcavationsBulkheads/pilesEngineeringEarth surface
The invention relates to a forming method of a large shallow foundation pit with a soft soil foundation, which comprises the following steps: firstly, slope making: the slope making is performed for a soil body within 1.5-2.0 m under the earth surface of the foundation pit, the slope gradient is 1:1-1:0.5, and the side slope of the soil body is protected by adopting cement mortar with the proportion being 1:3; secondly, shoring: a shoring structural pile and a top beam are fixedly arranged near the wall of the foundation pit after the slope making, and the top level of the shoring structural pile and the top beam is 1.5-2.0 m less than that of the earth surface; thirdly, raining; fourthly, earthwork excavating; fifthly, pit bottom reinforcing: the pit bottom surface is reinforced by adopting a cement mixing method in a flower arrangement way, the reinforcement depth is 0.4-0.6 times of that of the foundation pit, and the foundation pit is formed after the bottom surface of the foundation pit is reinforced. The invention has simple construction method, good stability after forming and high safety factor and can effectively reinforce the shallow foundation pit, especially the large shallow foundation pit with a 3.5-6 m soft soil foundation in depth.
Owner:MCC TIANGONG GROUP
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