273 results about "Embankment dam" patented technology

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.

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.

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.

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.

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.

The invention relates to a method for building earth-rock dam vibrated bitumen concrete seepage cutoff wall, belonging to the construction of earth-rock dam seepage cutoff wall. It comprises following steps: a, laying mold plate which comprises slide mold plate or assemble movable mold plate; b, laying high temperature resistant non-woven cloth; c, laying transition material and rolling the transition material; d, laying bitumen concrete: filling vibrated bitumen mixed material into the mold plate and using blade vibrator to vibrate it while the mixed material comprises: skeletal material, powdered ore and bitumen; e, moving the mold plate or removing the mold plate; f, keep warm and maintaining. The invention has the advantages that: it is not limited by temperature while it can be processed above -25Deg.C; and the vibrated bitumen concrete is uniform with better seepage cutoff ability, unlimited by temperature and simple device.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

The invention relates to a method for constructing the earth-rock dam vibrated bitumen concrete seepage cutoff wall, belonging to the construction of earth-rock dam seepage cutoff wall. It comprises following steps: a, laying mold plate; b, laying high temperature resistant flexible cloth-base material to cling the inner side of mold plate and its width is bigger than the thickness of bitumen concrete; c, laying transition material at the outer side of mold plate and rolling the transition material; d, laying bitumen concrete; e, moving the mold plate or removing the mold plate. The invention has the advantages that: the compound seepage cutoff element formed by the bitumen concrete wall and the high temperature resistant cloth-base material has better flatness of the contact surface with the transition material to confirm the effective seepage cutoff section of bitumen concrete wall.

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.

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.

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.

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.

The invention discloses a high earth-rock dam slope protection structure which is convenient to construct and better in slope protection performance and a construction method of the slope protection structure. The high earth-rock dam slope protection structure comprises an upstream dam face and a downstream dam face which are arranged on the upstream side surface and the downstream side surface of dam body rockfill of a high earth-rock dam, the upstream dam face is mainly formed by building multiple upstream building blocks, and the downstream dam face is mainly formed by building multiple downstream building blocks; the upstream building blocks and the downstream building blocks are both of a polygon structure in a regular shape; hardcore beds are arranged between the upstream dam face and the downstream dam face and the dam body rockfill. The slope protection structure is mainly built by adopting the polygonal upstream building blocks and the polygonal downstream building blocks which are in the regular shape, the dam face integrality is good, the flatness is high, construction is convenient and quick, destruction such as loosening or rolling down or slipping is not prone to being generated in the earthquake process, the good anti-earthquake effect is achieved, and the slope protection property is better; the surface of the dam body rockfill is flatter due to the hardcore beds, and therefore building of the upstream building blocks and the downstream building blocks is facilitated.

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.