804results about "Earth-fill dams" patented technology

The invention relates to a real-time monitoring method for the construction quality of a core rockfill dam. The method comprises the following steps: the dynamic coordinates and the exciting force output state of a rolling machine and the dynamic coordinates, the no-load and full-load states and the discharge point coordinates of a dam material transporter are collected in real time by monitoring terminals arranged on the rolling machine and the dam material transporter, and are transmitted to a remote database server in real time by a GPRS network; the server analyzes and judges whether the running speed and the exciting force output of the rolling machine exceed a standard or not and whether dam material discharge points match or not in real time, and transmits a corresponding alarm by an alarm device and PDA; and the monitoring terminals of a site sub-control station and a master control center read data by a cable network or a wireless network, carry out real-time calculation and analysis on a dam surface rolling quality parameter and a dam transportation monitoring parameter, compare the result with a setting standard, send out an alarm by the PDA and the monitoring computers of the master control center and the site sub-control station according to the deviation and guide correlative personnel to perform site feedback. The invention effectively improves the precision of the construction quality monitoring of the core rockfill dam and the flexibility of graphical calculation.

The invention provides a method for optimizing grain composition of a blasting rockfill material based on a fractal theory. The method is characterized by comprising the following steps of: establishing a function relation among the grain fractal dimension, compacted dry density and average particle size of the rockfill material, and further establishing a relation between a blasting scheme or parameter and the compacted dry density of a field rockfill material according to a correction Kuz-Ram model for forcasting the blasting fragment size distribution of a rock mass; and obtaining an optimal grain composition of a dam construction rockfill material which is easier to compact by adjusting the blasting scheme or parameter. The method can be applied to optimized design of the grain composition of the blasting rockfill material.

The present invention discloses a riprap rock-fill concrete construction method, which relates to a construction method for the large volume concrete. The present invention adopts self-compacting concrete having superior anti-segregation performance and good plasticity-retention performance, and firstly the concrete is poured into a bin, and then block stones or pebbles with the particle size smaller than 4 cm are poured into the poured self-compacting concrete in a mechanical way or a manual way, and the self-compacting concrete can fill up and compact the vacancies caused in the block stone settlement path at any time, the high anti-segregation performance ensures that the self-compacting concrete does not segregate and bleed water under the impact of the block stones, and finally the self-compacted rock-fill concrete with high intensity is formed. The method has the advantages that the construction is convenient, and the present invention has significant effects on the aspects of improving the construction efficiency and saving the construction cost, and the rock-fill concrete formed has high degree of compaction, the cement used is less, the hydration temperature rise is low, the volume stability is good, and the comprehensive performance is excellent, meanwhile, the present invention also has the advantages of energy-saving, environmental protection and being easy for continuous construction.

The invention discloses a concrete-enrockment mixed dam and a construction method thereof. The mixed dam has a novel dam body structure formed by combining a concrete dam body and a rockfill dam body. The dam body thereof comprises the concrete dam body, the rockfill dam body, pectinate connection section, a subcrust and a transition layer, wherein the pectinate connection section is arranged in the rockfill dam body, is subjected to one-piece pouring with the concrete dam body and is embedded into the rockfill dam body; and the subcrust and the transition layer are arranged between the concrete dam body and the rockfill dam body. The concrete-rockfill mixed dam absorbs the advantages of rock-fill dams and concrete dams, overcomes the disadvantages of the two dam types, and has the advantages of simple structure and convenient construction and manufacturing cost reduction, which is an economical and practical dam type.

The invention provides a low-permeability rock-fill material concrete panel rock-fill dam. The low-permeability rock-fill material concrete panel rock-fill dam comprises a concrete panel, a cushion area, a transition area, an upstream main rock-fill area and a downstream secondary rock-fill area which are formed in sequence from upstream to downstream; an L-shaped draining area is formed between the downstream side of the transition area and the upstream side of the upstream main rock-fill dam area; the horizontal portion of the draining area transversely passes through the bottoms of the upstream main rock-fill area and the downstream secondary rock-fill area; the upstream main rock-fill area and the downstream main rock-fill area are horizontally partitioned into an upper portion and a lower portion; a reverse filtering area I is formed between the downstream side of the transition area and the vertical portion of the draining area; a reverse filtering area II is formed between the horizontal portions of the upstream main rock-fill area as well as the draining area and the horizontal portions of the downstream secondary rock-fill area and the draining area. The reverse filtering area I, the reverse filtering area II and the draining area are formed on the basis of the conventional concrete panel rock-fill damp structure, thereby improving the permeating stability and the safety of a dam body. A rock-fill material is taken from local resources, thereby reducing the engineering building cost, and facilitating construction.

The invention discloses an ecological comprehensive treatment system of a northern mountain river channel. The system comprises three sub ecological systems of an ecological permeable dike built on the upstream of a main stream and a branch stream of a mountain river, a reservoir pond arranged at the middle and downstream area of the mountain river and a wet land communicated with the reservoir pond, and adopts an ecological treatment mode of closure-storage-preservation. The construction method comprises the steps of: a) building of the ecological permeable dike; b) setting of a triangular pyramidal wood pile stone cage; c) building of the reservoir pond; d) planting of plants of the reservoir pond; e) building of a wet land system; and f) recovery of a river bank band. The system and the construction method can effectively intercept the mountain debris flow and the river non-point source pollution, adjust the river runoff, improve the hydrologic conditions of the mountain river in non-flood season, decrease the dry season of the mountain river, and facilitate to recover the ecological system of the mountain river. Meanwhile, traditional depressions and empty ponds in the mountain river can be used in construction, so that the engineering building cost is reduced, and the self-cleaning capacity of river water is improved.

The invention provides an earth and rockfill dam construction unit partitioning method based on a BIM technology. The method comprises the steps that S1, an engineering design result model is read in; properties of the design model are expanded and managed according to material characteristics of engineering construction and the model as well as construction characteristics and properties, and construction-related property is added on the basis of property information of the design model; S2, hierarchical models are obtained according to hierarchical model construction characteristics; S3, property configuration and expansion are performed on hierarchical model construction according to the hierarchical model construction characteristics or parameters to obtain a BIM model for hierarchical model construction and properties of the BIM model; S4, framing models are obtained according to framing model construction characteristics; S5, property configuration and expansion are performed on framing model construction according to the framing model construction characteristics and parameters to obtain a BIM model for framing model construction and properties of the BIM model; and a total construction BIM model is obtained.

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 relates to a face plate rock-fill dam structure of reasonably utilizing sand gravel material and a construction method thereof. The invention aims at providing a face plate rock-fill damstructure of reasonably utilizing sand gravel material and a construction method thereof; a sand gravel material near a dam site is put in a drying area of the middle part of a dam body so as to avoid additionally open up a rock-fill material field and protect the biological environment. The face plate rock-fill dam structure of reasonably utilizing sand gravel material is provided with a dam main body; the upstream side of the dam main body is sequentially laid with a transition layer, a cushion layer and a face plate from inside to outside; a special cushion layer is arranged below the cushion layer; a dam base of the upstream side of the main body is provided with a rock ballast backfill area and a silt backfill area, the downstream side of the main body is provided with a dry stone pitching, and a downstream dam base is provided with an oversize stone pressing stone area; and the main body comprises a main rock-fill area and a secondary rock-fill area, a sand gravel area positioned above a seepage line is arranged in a hollow cavity surrounded by both the main rock-fill area and the secondary rock-fill area, and the bottom part of the sand gravel area and the low altitude position of a downstream surface are provided with inverted filter protection layers. The invention is used in face plate dam engineering of the natural sand gravel material near the dam site.

A flood wall system and method of constructing same, including providing a first main panel section; attaching sleeves to each side of a main panel prior to configuring the final chamber; providing two sleeves of fabric at the upper opening of each chamber for supporting the chambers while they are filled with materials such as sand; providing a series of chambers sewn together to define a continuous cellular wall; the final chamber having a horizontal height which is two feet (0.6 m) longer than the vertical height further having a front toe portion one foot (0.3 m) in height; filling each chamber with a quantity of material, such as sand; on each end of a completed chain of chambers, further comprising a set of loops or ties so that a chain of chambers is capable of being tied to other chains of chambers to define the continuous flood wall system.

The invention provides an earth and stone material grading optimization determining method which comprises the following steps of: changing granularity fractal dimension of earth and stone materials for the earth and stone materials with particle distribution meeting fractal distribution characteristics; preparing a grading earth and stone material sample with different particle size distribution functions; establishing a function relationship of extreme value dry density, modulus of compression, shearing strength and grading granularity fractal dimension through a field or indoor test; and regulating the granularity fractal dimension to obtain earth and stone material grading with a better filling relationship, easier compactness, higher modulus and strength. The earth and stone material grading optimization determining method can be used for a particle grading optimization design of rockfill materials and natural sand gravel materials.

The invention discloses a high rock-fill dam membrane anti-seepage body on a deep coverage layer and a construction method of the high rock-fill dam membrane anti-seepage body. The membrane anti-seepage body is composed of a concrete protection layer, a geomembrane anti-seepage layer, a flexibility cushion layer and a transition layer. The concrete protection layer is a cast-in-place fiber concrete layer for a reserved cross joint and a vertical joint and located on a surface layer to protect a geomembrane. The geomembrane anti-seepage layer is a two-cloth and one-membrane composite geomembrane and is located in the middle to play a role of preventing seepage. The flexibility cushion layer is a polyurethane pervious concrete layer and located at the bottom of the anti-seepage body to support the geomembrane and to transmit and disperse water loads. The rough granule transition layer is arranged between the flexibility cushion layer and a rock-fill dam body. The construction method comprises the technical steps of filling and building the transition layer, pouring the flexibility cushion layer, paving the composite geomembrane, pouring the concrete protection layer and the like. The membrane anti-seepage body can keep stable on a high rock-fill dam slope, the ability of adapting to deformation of a coverage layer dam foundation and the dam body is high, the structural form is simple, construction is fast, and the anti-seepage problem of the high rock-fill dam on the deep coverage layer can be effectively solved.

The invention discloses a method for measuring and calculating characteristics of breaches of a landslide and debris-flow dam. Aiming at overcoming the deficiencies of the prior art that the method for measuring and calculating the average widths of the breaches of the landslide and debris-flow dam is not appropriate, and the residual heights of the breaches cannot be measured and calculated, the invention provides a method for measuring and calculating the average widths and residual heights of the breaches of the landslide and debris-flow dam and the application thereof. The method for measuring and calculating the breaches of the landslide and debris-flow dam comprises the steps of: firstly obtaining basic data required in measurement and calculation through field investigation and measurement or sampling analysis, and then respectively calculating two characteristic values such as the average width and the residual height of each breach according to corresponding formulas. Based on the breakup mechanism and characteristics of the landslide and debris-flow dam, the method disclosed by the invention pertinently solves the problem of measurement and calculation of the characteristics of breaches of the landslide and debris-flow dam, and realizes the measurement and calculation of characteristic values of the residual height of the breaches for the first time. Through comparison of the measurement value and the practically measured value, the errors of the calculated results are not big, thus the engineering practice demands can be met. The method disclosed by the invention can be applied to measurement and calculation of characteristics of breaches possibly caused before or after the landslide and debris-flow dam is formed.

The invention provides a panel construction method of concrete faced rock-fill dam, sequentially including the following procedures: vertical joint cushion layer and sloping surface renovating, emulsified asphalt spraying, reinforcing steel bar system safety, side form sealing up system safety, slip form system safety, concrete pouring, form removal maintenance and peripheral joint and vertical joint sealing up construction; wherein the concrete pouring adopts 'semi-closed type' chute warehousing, and pouring to the top in one step is carried out on the panel. The panel construction method of concrete faced rock-fill dam provided by the invention can carry out one-step construction of panel, thus reducing differential settlement among various dam materials after panel concrete construction, preventing structural crack of concrete panel after retaining water and avoiding that the top of the primary panel is cavity as construction is carried out by stages, so as to ensure the dam to operate safely.

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 block stone-reinforced concrete piling composite groyne bank protection structure, which is used for bank protection in hydraulic engineering and ocean engineering. The block stone-reinforced concrete piling composite groyne bank protection structure consists of reinforced concrete pilings, connecting and tying beams and block stones. When the composite pile type groyne structure ensures the accretion promotion and pond protection effect of the pile type groyne, the goal of reducing the engineering manufacture cost is reached through enlarging the piling space and reducing the consumption of reinforced concrete.

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 belongs to the technical field of hydroelectric and hydraulic engineering hydraulic structures, and particularly provides a high elastic die cushion type composite dam. The composite dam comprises a concrete face plate, a cushion layer area, a transition area, an upstream major stone pile area and a downstream minor stone pile area, wherein the concrete face plate, the cushion layer area, the transition area, the upstream major stone pile area and the downstream minor stone pile area are sequentially arranged from an upstream region to a downstream region; a high toe wall area is arranged at the bottom of the concrete face plate, the bottom of the cushion layer area and the bottom of the transition area; a lower compression area is arranged at the bottom of the upstream major stone pile area and the bottom of the downstream minor stone pile area; the lower compression area is arranged at the downstream position of the high toe wall area and below the crest level of the high toe wall area. The high toe wall area and the lower compression area are arranged, so that transformation and stress of a dam body and the concrete face plate are reduced, the standards of stone pile dams with 200 m level face plates are reached, and the technology for stone pile dams with 300 m level face plates is feasible, economical and safe.

The invention relates to a broken line type concrete face rock-fill dam and a method for constructing the same. The technical problem resolved by the invention is to provide a face rock-fill dam and a method for constructing the same, by which the dam body can be designed in accordance with topographic and geologic conditions on site so as to lower the engineering risk, save the engineering cost and widen the adaptive condition of the dam type of the rock-fill dam for different topographic and geologic conditions. The technical proposal resolving the problem is as follows: the broken line type concrete face rock-fill dam comprises a dam axis and faceplates with reinforced concrete structures; the rock-fill dam is characterized in that the dam axis is of the broken line, and faceplates built along the dam axis also form a shape of a broken line, and turning parts of two faceplates are in transitional connection by a connecting plate with a reinforced concrete structure, and peripheries of faceplates are provided with toe boards, and a cushion course, a transitional layer and the rock-fill body are arranged below the faceplates. The broken line type concrete face rock-fill dam and the method can be applied to a reinforced concrete face dam project which can not be in straight-line type arrangement along the direction vertical to the river due to specially topographic and geologic conditions.

The invention belongs to the technical field of civil engineering, and provides a theoretical basis and a feasible, effective and practical method for an engineering decision, meanwhile, assists managerial staff of an engineering project in managing and controlling dam body filling construction; besides, the balancing-optimalizing method performs consideration from the whole life cycle of the engineering to comprehensively consider the important influence from the project time limit and the quality on the cost, and provides a construction scheme which more meets practical construction requirements and is more economical for decision makers. Therefore, the technical scheme adopted by the invention is that a balancing-optimalizing method, for the project time limit, the quality and the cost, used in the concrete faced rockfill dam construction builds a balancing-optimalizing model which is based on quality cost and decision preference, and gives a non-dominated sorting genetic algorithm which is used for optimizing model solution and based on fuzzy project time limit and fuzzy quality; a built mathematical model is a built objective function; a fuzzy measure Me method is adopted to calculate the project time limit, the quality, the construction cost and the total cost of each general scheme. Thus, the balancing-optimalizing method provided by the invention is mainly applied to the civil engineering.

The invention relates to a rock-fill dam of an anchoring panel and a construction method thereof. The construction method comprises the following steps: respectively arranging a plurality of groups of prestressed anchor ropes simultaneously at one side of the upstream or the two sides of the upstream and downstream of a dam body, fixing one end of each prestressed anchor rope in a rock-fill body of the dam body, and fixing the other end of each prestressed anchor rope on the outer surface of a concrete panel of the upstream; or fixing the other end of each prestressed anchor rope on the outersurface of a protecting slope of the downstream, wherein each prestressed anchor rope structurally comprises a sleeve, one end of the sleeve is fixedly connected with an end part expanding body, and the part, penetrating through the concrete panel, of the other end of the sleeve is provided with a steel sleeve, the exposed end of the steel sleeve is provided with a concrete pedestal, the end surface of the concrete pedestal is connected with a jack and an anchor, the anchor is internally and fixedly connected with one end of each steel stranded wire, and the other end of each steel stranded wire is fixedly connected with a guide cap. According to the rock-fill dam of the anchoring panel and the construction method thereof, the relative sliding of the concrete panel and the rock-fill body is limited, the stability of the edge slope of the dam body is improved and the volume of the dam body is reduced.

The invention discloses a retaining dam, particularly discloses the retaining dam for hydraulic and hydro-power engineering and belongs to the technical field of design and construction of hydraulic and hydro-power engineering buildings. The retaining dam for the hydraulic and hydro-power engineering is simple in structure, convenient to construct and low in investment cost. The retaining dam comprises a transitional cushion material, an inverted filter layer, a rock ballast layer and an anti-seeping core wall composed of geomembranes, wherein the anti-seeping core wall is located in the middle of the retaining dam transversely and extends along the retaining dam longitudinally and vertically; the transitional cushion material, the inverted filter layer and the rock ballast layer are sequentially arranged in upstream and downstream directions of the anti-seeping core wall.

The invention provides a skeleton and template-based earth-rock dam three-dimensional prototype building method. The method has the advantages of optimizing the earth-rock dam model, saving the modeling time and increasing the design efficiency and quality. According to the scheme, the method comprises the following steps: 1, parameterizing an earth-rock dam prototype; 2, building a skeleton positioning model of the earth-rock dam prototype; 3, building a template library of earth-rock dam prototype components; 4, driving the earth-rock dam prototype components by utilizing a design list; and 5, integrally assembling the earth-rock dam prototype components. According to the method disclosed by the invention, earth-rock dams are divided into smallest components which are integrated according to correlative characteristics; different types of earth-rock dams are selected in the built template library to carry out improved design of the components to ensure that the three-dimensional model design of the earth-rock dams can be rapidly completed; and therefore, the design work quality and the design efficiency are increased.

The invention provides a method for eliminating risk of dam break, and belongs to the field of flood fighting of an earth-rock dam in hydraulic engineering. In the method, a drainage channel is pre-arranged in the case of higher overtopping risk of the earth-rock dam, or a drainage channel is emergently arranged before the earth-rock dam reaches a second stage of dam break due to overtopping so as to lower the reservoir level. The method mainly comprises the following steps of: (1) determining the position of a drainage groove and the size of a drainage groove opening; (2) anchoring waterproof geotextile at the predetermined position of the drainage groove body at a downstream dam slope by a continuous anchor rod; (3) carrying out paving protection or riprap protection on a dam toe; and (4) lowering elevation of a dam crest by blasting or machinery excavation so as to form the drainage groove opening. By adopting the brand-new passive-drainage emergency rescue method in case of earth-rock dam break, the construction period is shortened, and the risk of dam failure can be prevented in the case of forced overflow of the earth-rock dam so as to guarantee safety of life and property of people in the downstream.

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 grid type concrete faced rockfill dam. The grid type concrete faced rockfill dam comprises a wave wall, a dam crest road, a rockfill area, a transition layer, a toe board, a water-tight screen, reinforced concrete grids, a reinforced concrete face and a cushion layer, wherein the reinforced concrete grids comprise transverse grids and longitudinal grids; the transition layer is arranged on the upstream face of the rockfill area; the upstream face of the transition layer is provided with the transverse grids and the longitudinal grids which are crossed; multiple grid units are formed between the transverse grids and the longitudinal grids and are internally provided with the cushion layer; the cushion layer is provided with the reinforced concrete face; the toe board is arranged at the bottom end of the transition layer; the water-tight screen is arranged at the bottom of the toe board; the wave wall is arranged at the top end of the transition layer; the dam crest road is arranged on the top of the rockfill area. The grid type concrete faced rockfill dam has the advantages that the anti-seismic property is high, the reinforced concrete face is not prone to crushing failure and cracking failure, and a waterproof and water-tight system is high in safety degree.