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275 results about "Embankment dam" patented technology
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An embankment dam is a large artificial dam. It is typically created by the placement and compaction of a complex semi-plastic mound of various compositions of soil, sand, clay, or rock. It has a semi-pervious waterproof natural covering for its surface and a dense, impervious core. This makes such a dam impervious to surface or seepage erosion. Such a dam is composed of fragmented independent material particles. The friction and interaction of particles binds the particles together into a stable mass rather than by the use of a cementing substance.
Device and method for clay core wall hydraulic fracturing experiments
ActiveCN103389249AReduce distortionReduce intensityPreparing sample for investigationMaterial strength using tensile/compressive forcesWater volumeAxial pressure
The invention relates to a device and a method for clay core wall hydraulic fracturing experiments under simulated coupling conditions. The method is characterized in that two semi-cylindrical molds are specially made and assembled into a sample mold which is easy to assemble and disassemble; the internal temperature of a pressure chamber is controlled through changing the temperature and amount of water in a copper water pipe; internal water pressure is applied to a sample by a water flow passing through a base of the pressure chamber, a permeable plate, coarse sand and finally a blowhole; and hydraulic fracturing features of the clay sample under different conditions are studied through changing the water temperature and loading schemes of the fracturing water pressure, the axial pressure and the confining pressure, etc. The method overcomes the defects of hydraulic fracturing experiments in the prior art on core walls of earth and rock-fill dams, simulates features, force conditions, influencing factors and the like of clay core walls more accurately, and thus can be widely applied in hydraulic engineering and geotechnical engineering.
Owner:HOHAI UNIV
Distributed optical fiber test platform for monitoring earth rock dam seepage condition
ActiveCN103364321AImprove engineering applicabilityThe design concept is complete and novelPermeability/surface area analysisPorous mediumGeophysics
The invention discloses a distributed optical fiber test platform for monitoring an earth rock dam seepage condition. The distributed optical fiber test platform comprises a heating system, a seepage system and a DTS system; the distributed optical fiber test platform is a practical platform having strong operability, aimed at dam seepage monitoring and based on construction of a dam seepage monitoring two-field coupling simplified model; with combination of the DTS system, the distributed optical fiber test platform provides a possibility for a practical application of seepage monitoring engineering of a porous medium structural body, such as an earth rock dam and a dyke-dam, and builds a reliable test platform for various related test researches; and the distributed optical fiber test platform has the advantages of wide test range, high precision, simple layout, low monitoring cost, high working efficiency, strong engineering applicability and the like.
Owner:HOHAI UNIV
Anti-seismic measure and construction method of a high earth-rock dam
ActiveCN102261053ASmall sizeImprove skid resistanceEarth-fill damsRock-fill damsRockfill materialEarthquake resistant structures
Owner:HOHAI UNIV
Rapid construction method for stone dam rolling asphalt concrete cutoff core wall
The invention relates to a method for quickly constructing sand bank rolling pitch concrete anti-leakage wall, especially the method for laying two layers of concretes on the wall while each layer is 30cm, at the condition as low-temperature as -5Deg. C and isohyetal amount is lower than 2mm / h, to effectively increase the days that applying said wall constructions.
Owner:CHINA GEZHOUBA GROUP CO LTD
Earth and rockfill dam seepage field monitoring system and early warning method thereof
PendingCN108267394AImprove the level of informatizationScientific masteryPermeability/surface area analysisReal time analysisMonitoring system
The invention provides an earth and rockfill dam seepage field monitoring system and an early warning method thereof, and belongs to the technical field of earth and rockfill dam seepage disaster early warning. The earth and rockfill dam seepage field monitoring system comprises an electrical acquisition instrument, a data transmission device, an upper computer and a plurality of electrodes arranged in a dam body, wherein the plurality of electrodes are connected with the input end of the electrical acquisition instrument; the output end of the electrical acquisition instrument transmits datainformation to the upper computer through the data transmission device. The early warning method of the earth and rockfill dam seepage field monitoring system comprises the steps of field monitoring,monitoring system arrangement and terminal early warning. The monitoring system shows dam seepage characteristics in a full cross-section way; the full-coverage comprehensive assessment on the dam health state is facilitated; only once installation is needed; the test time period is more flexible; the dam inside seepage field change features are analyzed in real time; the long-period monitoring isrealized; the monitoring system field arrangement is flexible; the device structure is simple and the installation is convenient.
Owner:ZHEJIANG INST OF HYDRAULICS & ESTUARY +1
Anti-seismic combination slab for earth and rockfill dam and construction method thereof
ActiveCN101831889ANo damageDoes not affect anti-seepage safetyEarth-fill damsRock-fill damsMaterials scienceCushion
The invention discloses an anti-seismic combination slab and a construction method thereof. The anti-seismic combination slab consists of concrete slabs of upper and lower layers and pitch layers, wherein the concrete slabs are formed by combining rectangular concrete blocks, the rectangular concrete blocks of the concrete slabs of the upper and the lower layers are arranged in a staggered mode, and longitudinal and horizontal parting seams are reversed among the rectangular concrete blocks; the pitch layers are arranged between the concrete slabs of the upper and the lower layers, and pitch is filled in the horizontal seams and the longitudinal seams among the rectangular concrete blocks. The construction method comprises the technical steps of paving cushion layers, pouring the concrete slab of the lower layer for asphalting in the parting seams, paving the pitch layers, pouring the concrete slab of the upper layer for the asphalting in the parting seams and the like. The anti-seismic combination slab has the advantages of high capability of adapting to deformation due to earthquake, simple and convenient construction, low construction cost and good effect.
Owner:HOHAI UNIV
Polymer grout injected earth-rock dam and construction method thereof
ActiveCN102561271AAvoid risk of collapseTo achieve overflow functionFoundation engineeringEarth-fill damsStructure of the EarthPolymer
The invention discloses a polymer grout injected earth-rock dam and a construction method thereof. The polymer grout injected earth-rock dam comprises rockfill, polymer grout injected rockfill and a face slab. A dam body is built with the rockfill, with the rockfill and a clay core wall or with the face slab and the rockfill by filling. Overall dam grouting or grouting on the upstream surface and the downstream surface of the dam body are performed during filling. The problems that conventional earth-rock dam allows no passage of water, accelerations at the top of the dam are high, the rockfill mass is easy to loosen and the like are solved, and the polymer grout injected earth-rock dam is simple in structure and convenient in construction, has evidently improved seismic stability, has wide application prospect and is an economical and practical dam.
Owner:HOHAI UNIV
Construction method for vibrated asphalt concrete anti-infiltration core wall of earth rockfill dam
ActiveCN1807763AImprove uniformityGood anti-seepageProtective foundationEarth-fill damsEmbankment damMaterials science
Owner:CHINA WATER NORTHEASTERN INVESTIGATION DESIGN & RES
Earth-rock dam construction teaching model
InactiveCN102277852ASolve teachingSolve the problem of practiceEarth-fill damsHydraulic modelsBrickEngineering
The invention discloses a teaching model for construction of an earth and rockfill dam. The earth and rockfill dam has a clay core and is constructed by filling and laminating earth and rockfill layer by layer, clay masonry is substituted by bricks within 60cm of the outline of the earth dam, two sides of the cross section of the earth and rockfill dam are supported by channel steel 6.3, pulled and fixed by round steel phi20 and enclosed by toughened glass with the thickness of 8mm; the earth and rockfill dam comprises an earth and rockfill dam top, a dam body seepage-proofing body, a drainage facility, a protective slope and dam slope drainage facility and a visiting passageway, wherein a standard traffic road is built on the earth and rockfill dam top, border stones and drainage ditchesare arranged on the downstream side of the earth and rockfill dam top; rock mounds and the drainage ditches are arranged at the foot of the earth and rockfill dam to constitute the drainage facility;a dry stone pitching is arranged on the upstream face of the dam body of the earth and rockfill dam, and a turf protective slope provided with concrete meshes is arranged on the downstream slope of the dam body of the earth and rockfill dam; and the visiting passageway is arranged in a laboratory. According to the invention, field teaching and actual practices are combined to make the shortage ofthe work site practice outside schools.
Owner:YANGLING VOCATIONAL & TECHN COLLEGE
Anti-seepage structure capable of adapting to settlement of earth and rockfill dam
ActiveCN105464056ASafe and reliable structureBarrages/weirsEarth-fill damsStructural engineeringAsphalt concrete
Provided is an anti-seepage structure capable of adapting to settlement of an earth and rockfill dam. The anti-seepage structure is technically characterized in that a concrete anti-seepage wall is arranged below a dam foundation; an asphalt concrete core wall is arranged inside the rockfill dam; an arched anti-seepage wall connecting section is arranged between the concrete anti-seepage wall and the asphalt concrete core wall, wherein the top of the concrete anti-seepage wall is embedded in an arched entrance of the arched anti-seepage wall connecting section, and the bottom of the asphalt concrete core wall is arranged at the arched top end of the arched anti-seepage wall connecting section; the two sides of the asphalt concrete core wall are filled with sand gravel transition materials; and the inner side of the arched anti-seepage wall connecting section is further filled with flexible anti-seepage body materials. Due to the adoption of the arched anti-seepage wall connecting section, the foundation anti-seepage wall is allowed to penetrate into the connecting section in the filling process of the earth and rockfill dam, and the connecting section is filled with the flexible anti-seepage materials after primary settlement of the earth and rockfill dam and the foundation is basically completed. Meanwhile, according to the structure, a worker can enter the connecting section for observation and inspection at any time in the construction process or in the later period.
Owner:INVESTIGATION & DESIGN INST OF WATER RESOURCES & HYDROPOWER LIAONING PROVINCE
Composite panel earth and rockfill dam and anti-seepage body construction method
InactiveCN103233446APlay the role of slope protectionHigh water levelEarth-fill damsRock-fill damsWater storageEngineering
The invention discloses a composite panel earth rockfill dam and an anti-seepage body construction method. The composite panel earth rockfill dam comprises a capsule blanket, a panel seat, a composite panel, a wave-resistant wall, a transitional layer, an earth dam body and the like, wherein the cross section of the composite panel earth dam is ladder-shaped; the wave-resistant wall is arranged at the dam top; the capsule blanket is tiled on the upstream river bed; the panel seat from the river bed to dam abutments on two sides is arranged at the upstream toe; a drape is arranged below the panel seat; the composite panel is arranged on the whole upstream dam slope surface; the bottom surface of the composite panel is connected with the panel seat; the top surface of the composite panel is connected with the wave-resistant wall; the inclined transitional layer with thin upper part and thick lower part is arranged between the composite panel and the earth dam body; a stone revetment and a packway are arranged on the downstream dam slope surface; and a slope-clinging drainage body is arranged at the downstream toe; and the capsule blanket, the resin film seal, the panel seat, the drape, the composite panel, the dam abutment on both sides and the wave-resistant wall form the closed anti-seepage body. The composite panel earth rockfill dam is suitable for being built on rock, gravel, earth and other different dam foundations, has the characteristics of high water storage level, good anti-seepage effect, simple structure, simplicity and convenience in construction and the like, and is a novel water-retaining building in the reservoir pivot.
Owner:HEFEI UNIV OF TECH
Anti-seepage anti-corrosion cement-clay solidifying slurry and preparation method thereof
The invention relates to an anti-seepage anti-corrosion cement-clay solidifying slurry, which is prepared from the following raw materials in parts by weight: 25 to 30 parts of common clay (water-free soil), 6 to 8 parts of kaolin, 3 to 6 parts of cement, 1 to 3.5 parts of curing agent, 0.5 to 1.5 parts of early strength agent, 0.01 to 0.1 part of organic stabilizer, and 55 to 60 parts of water. According to the anti-seepage anti-corrosion cement-clay solidifying slurry provided by the invention, the curing agent, the early strength agent and the stabilizer are added in a clay-cement slurry, so that the clay slurry with poor cementation becomes the anti-seepage anti-corrosion cement-clay solidifying slurry with short setting time, high erosion resistance, good mobility, simplicity in construction, and low cost, and the problem that the cement slurry is poor in solidification boundary fusion in an earth and rockfill dam, and the problems of ground stabilization, water sealing and leaking stoppage, anti-sloughing anti-settling project quality and reliability existed in geotechnical engineering are solved.
Owner:浙江广川工程咨询有限公司
Grouting reinforcement and earthquake resisting method for earth and rockfill dam
ActiveCN102605750AHigh tensile strengthIncrease elasticityEarth-fill damsRock-fill damsPre embeddingSeismic resistance
The invention discloses a grouting reinforcement and earthquake resisting method for an earth and rockfill dam, which includes the technical steps: using a drilling machine to drill holes at certain intervals on the upstream top and the downstream top of a dam in a range from one-quarter dam height to one-fifth dam height during filling of the dam; driving grouting casings for drilling supporting or pre-embedding horizontal grouting casings with holes in real time; injecting polymer materials into the grouting casings through grouting pipes; allowing the polymer materials to chemically react in the grouting casings and quickly swell and allowing the polymer materials to permeate into surrounding rockfill to be cemented with rockfill through voids inside the rockfill; and forming a solid flexible reinforced complex so that cohesion of rockfill complex is increased and seismic resistance of the dam is improved. The method is applicable to newly built earth and rockfill dams, is also applicable to earth and rockfill dams built already, and is fast in construction, the reinforcement is the flexible complex and adaptable to deformation of the dam under the action of seismic load, and good seismic resisting effect is achieved.
Owner:HOHAI UNIV
Earth and rockfill dam body seepage monitoring structure provided with abandoned dreg site behind dam and construction method thereof
ActiveCN102296572AReal-time understanding of seepage flowGuaranteed safe operationBarrages/weirsVolume/mass flow measurementWater flowEngineering
The invention relates to an earth and rockfill dam body seepage monitoring structure provided with an abandoned dreg site behind a dam and a construction method thereof. The technical problem to be solved by the invention is to provide an earth and rockfill dam body seepage monitoring structure provided with an abandoned dreg site behind a dam and a construction method thereof, which can be used for effectively and accurately measuring the seepage discharge of the dam and ensuring permanent smooth drainage of the abandoned dreg site behind the dam. The technical scheme for solving the problemis that: the earth and rockfill dam body seepage monitoring structure provided with the abandoned dreg site behind the dam comprises an abandoned dreg site and a permeable rockfill area which is positioned below the abandoned dreg site; concrete retaining walls are poured at the downstream dam toe of a dam body and in the permeable rockfill area; a water collecting box culvert vertical to the water flow direction is poured on the upstream side of each retaining wall; a concrete longitudinal drainage box culvert is embedded along the full length of the permeable rockfill area on a downstream side; a drain pipe and a mud pipe which are communicated with the water collecting box culvert and the drainage box culvert are embedded into each retaining wall; a plurality of through holes are formed on a top plate and an upstream side plate of the water collecting box culvert; a water collecting pipe is embedded; and a measuring weir is arranged in the drainage box culvert. The earth and rockfill dam body seepage monitoring structure is mainly applied to an earth and rockfill dam provided with the abandoned dreg site behind the dam.
Owner:POWERCHINA HUADONG ENG COPORATION LTD
Actual measurement device and method of ultrahigh earth-rock dam internal 3D deformation
ActiveCN106679559AAccurate descriptionAccurate correctionElectrical/magnetic solid deformation measurementSatellite radio beaconingMeasurement deviceEngineering
The invention discloses an actual measurement device and method of ultrahigh earth-rock dam internal 3D deformation. Multi-edged stainless steel plate is buried in some parts that need to be monitored in internal dam, and a vector line body is anchored in the center of the stainless steel plate. The downstream of the line body monitoring facility installs in a wedge-shaped sectional view room inserted in the downstream surface of the dam. A GNSS receiving antenna is installed in the roof and a two-axis inclinometer is installed in four corners of baseboard to acquire 6D shift of the house. The upper wall of the house is reserved for the wide seam for introducing the vector line body that tensions by a fixed pulley and a weight. The angle is measured by the line body orientation measurement device. The line body axial elongation is measured by coaxial swirling potentiometer type displacement meter in a fixed pulley and axial distribution temperature correction is considered. The internal dam 3D deformation can be gained by combining a sensor measurement value and a level-3 coordinate. The device and method has the advantages of high measurement accuracy, good stability and high reliability.
Owner:NANJING AUTOMATION INST OF WATER CONSERVANCY & HYDROLOGY MINIST OF WATER RESOURCES +1
Comprehensive evaluation method for putting small scale embankment dam out of service
The invention discloses a comprehensive evaluation method for putting a small scale embankment dam out of service. The method comprises: through the simulation of the factor indexes influencing the out-of-service of a small scale embankment dam, determining the index system for evaluating the out-of-service of the small scale embankment dam; referring to the engineering safety evaluation grades to determine the out-of-service evaluation grades of the small scale embankment dam; according to the quantitative and qualitative methods, determining the evaluation values of the bottom layer evaluation indexes of the four-index evaluation index system featuring the engineering safety, the ecological environment, the social environment and the economic factors; according to the subject weight and objective weight integration method, determining the weights of the evaluation indexes for the small scale embankment dam; based on the evaluation values of the bottom layer evaluation indexes and through the linear interpolation method, determining the membership degree of the bottom layer evaluation indexes to the evaluation grades; and according to the final membership degree of the out-of-service indexes of the small scale embankment dam, determining the out-of-service grade of the small scale embankment dam according to the largest membership degree principle. According to the evaluation method, a plurality of measurement parameters are introduced; the measurement method is efficient and can effectively evaluate whether the small scale embankment dam should be put out of service or not.
Owner:CHANGJIANG RIVER SCI RES INST CHANGJIANG WATER RESOURCES COMMISSION
Extrusion-wall type geomembrane-faced rockfill dam
The invention discloses an extrusion-wall type geomembrane-faced rockfill dam, relates to the field of geomembrane-faced rockfill dam construction, and aims at face rockfill dams. The extrusion-wall type geomembrane-faced rockfill dam at least comprises a dam body, a geomembrane, an extrusion wall, a protective layer and a protective slop, and is characterized in that the dam body is trapezoidal, inclined planes on two sides of the dam body refer to an upstream side dam and a downstream side dam, and the surface of the upstream side dam is paved with the geomembrane; the extrusion wall is disposed on the downstream of the geomembrane, in other works, the extrusion wall is sandwiched between the geomembrane and the upstream side dam, and the protective layer and the protective slop are arranged on the upstream of the geomembrane. The extrusion-wall type geomembrane-faced rockfill dam aiming at the security problems of the ultral-high face rockfill dams has the advantages that both independent advantage and comprehensive advantages of the geomembrane, the extrusion wall and rockfill materials are fully exerted, reliability, durability, aseismicity and security of a dam seepage control structure are enhanced, and the dam has good social, economic and environmental ecological benefits.
Owner:POWERCHINA XIBEI ENG
Production method of gravelly soil
InactiveCN105082351AIncrease productivityEfficient use ofClay mixing apparatusClay processing apparatusMaterials scienceEmbankment dam
The invention discloses a production method of gravelly soil; and the method can produce the gravelly soil satisfying the engineering requirements of earth and rockfill dams. Firstly, particles with particle sizes more than 150 mm in continuous-graded coarse and fine materials are eliminated; then, the thickness of a fine material layer is calculated by a specific formula according to the thickness of a coarse material layer to determine a ratio of the coarse materials to the fine materials; and finally, a blending machine is used for blending a mixture to obtain the gravelly soil with P5 content of 30-50% so as to satisfy the engineering requirements of earth and rockfill dams. The method produces the gravelly soil, and is higher in production efficiency and pass percent.
Owner:CHINA HYDROELECTRIC ENGINEERING CONSULTING GROUP CHENGDU RESEARCH HYDROELECTRIC INVESTIGATION DESIGN AND INSTITUTE
Anti-seepage treatment method for artificial dam
ActiveCN103696397AEasy constructionShort construction periodMarine site engineeringStructure of the EarthCrushed stone
The invention discloses an anti-seepage structure for an earth-rock dam. The anti-seepage structure is arranged on a side surface of a earth-rock dam body and comprises a lower cushion layer, an anti-seepage film layer, an inverted filter transition layer and a protective slope which are sequentially arranged from top to bottom; the lower cushion layer is made of sieved silt sand with the thickness of 5-10cm and / or fine-grained sandy clay; the anti-seepage film layer is made of anti-seepage materials and is used for preventing water from seeping into the earth-rock dam body; the inverted filter transition layer is made of sand gravel with the thickness of 10-20cm and / or rubble. The anti-seepage structure for the earth-rock dam has the advantages that an obvious anti-seepage effect can be realized for the dam by the anti-seepage structure, and the anti-seepage structure is convenient to construct, short in construction period, simple in operation, long in service life and low in manufacturing cost.
Owner:轩昂环保科技股份有限公司 +1
Resin panel earth-rock fill dam and panel construction method
ActiveCN102797241ALarge diurnal rangeAnti-stormBarrages/weirsEarth-fill damsMountain streamEngineering
The invention discloses a resin panel earth-rock fill dam. The resin panel earth-rock fill dam comprises an earth-rock fill dam built on a river way or mountain stream rock base; the cross section of the earth-rock fill dam is trapezoidal; a wave wall is arranged at the top of the earth-rock fill dam; a foot seat from a river bed to dam abutments on two sides is arranged at an upstream slope foot; an upstream dam slope is provided with a resin panel protective slope; a resin panel is respectively connected with the foot seat and the wave wall by an elastic connector and a settling connector so as to form a sealed anti-seepage body; a gravel transitional layer with a narrow upper part and a wide lower part is arranged between the back side of the resin panel and the resin panel earth-rock fill dam; a downstream dam slope is provided with a block rock protective slope and provided with a riding track; and a water draining prism is arranged at a downstream slope foot. The resin panel earth-rock fill dam disclosed by the invention has the advantages of simplicity and convenience in construction, short construction period, low manufacturing cost and easiness in maintenance; factory scale production qualities of the resin panel and parts thereof are guaranteed; and the resin panel earth-rock fill dam disclosed by the invention is the panel earth-rock fill dam with a novel anti-seepage and slope protective material.
Owner:HEFEI UNIV OF TECH
Earthquake-resistant structure for dam crest of high earth-rock dam and construction method of earthquake-resistant structure
ActiveCN105133548AImprove seismic performanceEarthquake resistanceEmbankmentsEarth-fill damsEarthquake resistanceFriction effect
The invention discloses an earthquake-resistant structure for a dam crest of a high earth-rock dam and a construction method of the earthquake-resistant structure. The earthquake-resistant structure comprises a lattice frame and a slope protecting net which are arranged in a range from 3 / 4-4 / 5 of height of the high earth-rock dam to the dam crest, wherein the lattice frame is arranged in a dam body and comprises river-along flat sheets and dam-axial flat sheets which are connected in a crossed manner; the slope protecting net is arranged on the dam surface and is connected with the lattice frame. The construction method is applied to the construction of the earthquake-resistant structure for the dam crest of the high earth-rock dam. The river-along flat sheets and dam-axial flat sheets are of a flat structure and have relatively good anti-grinding effects, and the friction effect between the flat structure and the piled stones is relatively strong; the river-along flat sheets and dam-axial flat sheets are respectively arranged along the flow direction of river and the length direction of the high earth-rock dam and are capable of resisting earthquake forces in corresponding directions, so that the earthquake-resistant effect is relatively good; the piled stones of granular materials can be integrally restrained by virtue of the lattice frame, the dam surface can be protected by the slope protecting net, and the integral earthquake resistance of the structure can be enhanced by virtue of common action of the lattice frame and the slope protecting net.
Owner:POWERCHINA CHENGDU ENG
Casting construction method for asphalt concrete anti-infiltration core wall of earth rockfill dam
ActiveCN1807764AEnhance construction temperatureEnhanced, can properly reduce the construction temperatureProtective foundationEarth-fill damsEmbankment damMaterials science
Owner:CHINA WATER NORTHEASTERN INVESTIGATION DESIGN & RES
Earth and rockfill dam for forming instantaneous overtopping in process of simulating overtopping dam break test
ActiveCN103114563AGuarantee the safety of life and propertyControl trial start timeBarrages/weirsEarth-fill damsStart timeWater flow
The invention relates to an earth and rockfill dam for simulating an overtopping dam break test. The earth and rockfill dam mainly comprises a dam body built by rock materials on a dam base, wherein leading slots are dug on the top of the dam body along the upstream and downstream directions of the dam body; the leading slots are communicated with the upstream and downstream of the dam body; a gate is arranged in the middle of the leading slots at an interval; and the leading slots are separated into an upstream section and a downstream section through the gate. The gate is arranged in the leading slots on the top of the dam body, and when the upstream water level reaches the position and the test is started, the gate on the leading slots is opened, the upstream water is drained from the leading slots, and the dam body is effectively washed to form dam break. According to the earth and rockfill dam, when water is accumulated at the upstream, dam break caused by the situation that the water overtops the leading slots is avoided, the test start time can be simply and effectively controlled, and the life and property safety of testers and the masses at the downstream is guaranteed.
Owner:NANJING HYDRAULIC RES INST
Dynamic monitoring system and monitoring method for connection structure of concrete dam and earth and rockfill dam
ActiveCN104848891ASolving the challenge of connecting structure monitoringWide range of applicationsMeasurement devicesStructural monitoringDynamic monitoring
The invention relates to a dynamic monitoring system and a monitoring method for a connection structure of a concrete dam and an earth and rockfill dam, and belongs to the technical field of hydropower engineering. According to the characteristics of the connection structure of the concrete dam and the earth and rockfill dam, the dynamic monitoring system is designed, the system employs an advanced fiber grating apparatus and a fiber grating demodulation device to monitor key positions of the connection structure, and monitoring projects comprise deformation, osmotic pressure, and stress of the connection structure. According to the dynamic monitoring system and the monitoring method, omnibearing and the overall process of design is performed from the analyses of the monitoring projects, monitoring points and network layout, type selection of monitoring apparatuses, monitoring means, and monitoring results, the difficulty of the monitoring of the connection structure of the concrete dam and the earth and rockfill dam of a hydropower station is solved, and experience is provided for similar projects. The dynamic monitoring system and the monitoring method are applicable to dynamic monitoring of the connection structure between earth and rockfill buildings and rigid buildings such as concrete etc., the application range is wide, the dynamic monitoring system and the monitoring method are applied in large-scale hydropower projects, and the economic benefit is great.
Owner:POWER CHINA KUNMING ENG CORP LTD
Concrete dam and earth and rockfill dam mixed dam type structure and construction method
ActiveCN105064288AReduce areaReduce slope supportEarth-fill damsRock-fill damsEcological environmentMaterials science
The invention relates to a concrete dam and earth and rockfill dam mixed dam type structure and a construction method. The concrete dam and earth and rockfill dam mixed dam type structure and the construction method aim at reducing large-area excavation on a slide rock body of a bank slope, avoiding transportation of large-space excavation materials, accordingly reducing scales of abandoned dreg areas, greatly reducing engineering investment, effectively protecting the ecological environment and embodying the good economy and the good environmental protection property. According to the technical scheme, the structure comprises a concrete dam section and an earth and rockfill dam section; the concrete dam section comprises a concrete dam body and a foundation curtain grouting gallery at the bottom of the concrete dam body; the earth and rockfill dam section comprises a clay core wall and core wall rockfill dams on the two sides of the clay core wall; a transition area is arranged at the joint of the concrete dam section and the earth and rockfill dam section; fan-shaped enrockment areas are distributed on the two sides of the joint; the gradient of the portion, close to the earth and rockfill dam section, of the transition area is 1:N, wherein N ranges from 1 to 2; the gradient of the sides, close to the concrete dam section, of the fan-shaped enrockment areas is 1:K, wherein K ranges from 1.8 to 2.5; and foundation grouting curtains are arranged in the foundation curtain grouting gallery and the clay core wall respectively.
Owner:POWERCHINA HUADONG ENG COPORATION LTD
Trussed embankment dam and wall structure
InactiveUS20060257209A1Improve power transmissionImprove reinforcement effectBarrages/weirsArtificial islandsVegetationEngineering
A trussed embankment dam and wall structure includes a cantilever structure group and a rod member group, and each cantilever structure of the cantilever structure group includes an anchor supporting pillar and a multidirectional connecting board. The lower portion of the anchor supporting pillar is built at a stratum or foundation to support the cantilever structure, and the upper portion of the anchor supporting pillar installs a multidirectional connecting board to a trussed joint structure. After a force is exerted to a rod member of the invention, the force is acted onto the joints of the cantilever structure and transmitted by other rod members. Therefore, each cantilever structure maximizes the supporting effect and provides a dispersive supporting type structure. Unlike the centralized supporting type truss structure, the invention uses the hollow portion of the structure and the malleability of components to create landscapes, fill soil and plant vegetation.
Owner:LI PIAO CHIN
Metal mesh box revetment structure of earth-rock dam and construction method of metal mesh box revetment structure
InactiveCN102587322ALower requirementEasy constructionCoastlines protectionStructure of the EarthEngineering
The invention relates to a metal mesh box revetment structure of an earth-rock dam and a construction method of the metal mesh box revetment structure. The metal mesh box revetment structure is formed in a way that stones are filled in a box body and the box body is knotted and fixed by mesh wires. For an area lacking of large stones, the scope of revetment is determined according to different requirements of different earth-rock dams or the requirements on washout resistance, scouring resistance or seismic resistance; a mesh, the box body and the mesh wire can be determined based on the resource of the stone of the revetment, the engineering scale and the protection requirement; the metal mesh box revetment structure is fixed to a dam body with revetment required. The metal mesh box revetment structure provided by the invention makes up the deficiency of the prior art, and meet the higher requirement of hydropower engineering, as well as having the advantages of convenience in material use, high washout resistance, scouring resistance and seismic resistance, convenience in construction, and low cost.
Owner:CHINA WATER RESOURCE & HYDROPOWER CONSTR ENG CONSULTING
High earth-rock dam slope protection structure and construction method thereof
InactiveCN105155477AStable structureImprove integrityEarth-fill damsRock-fill damsStructure of the EarthCrushed stone
Owner:POWERCHINA CHENGDU ENG
waste tire overflow dam
The invention discloses an overflow dam for waste tires. In the overflow dam, a riverbed is provided with a water retaining dam which is formed by building waste rubber tires; an overflow dam section is formed in the middle of the water retaining dam; non-overflow dam sections are formed at the two ends of the water retaining dam; the altitude of the overflow surface of the overflow dam section is lower than the dam top surface of each non-overflow section; a plate type bridge is erected above the overflow dam section; the riverbed at the downstream slope toe of the overflow dam section is provided with an apron; an upstream protection slope, a front dam shell, a front inverted filter, a seepage-proof body, a rear inverted filter, a rear dam shell and a downstream protection slope are arranged in sequence in the water retaining dam ranging from an upstream dam slope to a downstream dam slope; and the seepage-proof body is positioned above a cutoff trench on the axis of the dam. Due tothe adoption of the overflow dam for waste tires, a dam body has the advantages of simple structure, reasonable stress, high shock resistance, scour prevention, high adaptability, small work amount, convenience for construction, no pollution to water sources, long service life, waste recovery and low cost, and is a novel farmland water conservancy pond dam building; and the problem that a soil-stone dam cannot overflow is solved.
Owner:HEFEI UNIV OF TECH
Protective arrangement structure for debris flow gully
The invention relates to a protective arrangement structure for a debris flow gully, and is applicable to arrangement of a construction site platform in construction of a hydropower station. The protective arrangement structure comprises reinforced gabion overflow blocking dams, an earth and rockfill dam and a drainage tunnel, wherein the reinforced gabion overflow blocking dams and the earth and rockfill dam are distributed in the width direction of a river channel; the reinforced gabion overflow blocking dams are on the upstream side of the earth and rockfill dam; a water inlet of the drainage channel communicates with the river channel between the reinforced gabion overflow blocking dams and the earth and rockfill dam; and the construction site platform is arranged on the land side of the earth and rockfill dam. According to the protective arrangement structure, the reinforced gabion overflow blocking dams fix a river bed and block movable material sources of debris flow, the earth and rockfill dam blocks potentially eruptible movable material sources of debris flow, debris flow stops in front of the earth and rockfill dam, water and stone are separated, water flows through the drainage channel, and gully water treatment and debris flow prevention are achieved.
Owner:CHINA HYDROELECTRIC ENGINEERING CONSULTING GROUP CHENGDU RESEARCH HYDROELECTRIC INVESTIGATION DESIGN AND INSTITUTE
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