4099results about How to "Simple construction process" patented technology

The invention provides a channeling preventing and plugging agent and a construction method for controlling plugging and sealing channeling by utilizing the channeling preventing and plugging agent. The channeling preventing and plugging agent comprises a high-temperature-resistance pre-plugging agent serving as a pre-posed pre-plugging plug, an enhanced gel plugging agent serving as an intermediate enhanced plug and a high-strength resin plugging agent serving as a postposed sealing plug. The channeling preventing and plugging agent has the characteristics of high temperature resistance, long-term stability, good plugging performance and the like. The invention further provides a construction method for controlling plugging and sealing channeling by utilizing the channeling preventing and plugging agent. The method has a simple constructing process, and can be used for constructing after the channeling preventing and plugging agent is directly prepared on the spot. The channeling preventing and plugging agent can be used for effectively solving the adverse impact of the steam / air channeling phenomenon of a heavy oil thermal production well on production, and has an important effect on prolonging the production cycle of a heavy oil well and improving the recovery efficiency.

The invention relates to a high-altitude long-span overhanging corridor type reinforced concrete structure and a construction method, wherein the corridor part is a stiff beam structure; with own bearing capacity of a profile steel, a beam template supporting system is a hung template supporting system in such a manner of fixing a square steel by means of a U-shaped screw and a nut; a floorslab is a self-supporting steel bar truss template which is welded to a pre-embedded steel plate on the stiff beam by means of a pin; and a steel platform is arranged on a corresponding floor at the lower part of the corridor as an operating and safety protection platform for template support construction. The high-altitude long-span overhanging corridor type reinforced concrete structure and the construction method have the advantages that: the template supporting construction method, according to which the operating platform is built from H-steel or profile steel beams, the stiff beam is hung and is self-supported and the floorslab is self-supported, is employed, so that the problem of difficult template supporting of the high-altitude long-span overhanging corridor structure, the revolving materials are greatly saved, the construction cost is reduced, the construction progress is accelerated and the safety is ensured; and the steel plate is pre-embedded on the stiff beam, so that the floor bearing plate is effectively connected with the stiff beam and the floor bearing plate and the stiff beam are capable of acting together to ensure the safety of the structure.

The present invention relates to a distributed optical-fibre sensing detection method for cast-in-place pile foundation. It is characterized by that it utilizes the sensing property of optical fibre for strain, so that the optical fibre can be implanted in the cast-in-place pile. When the concrete is solidified or loaded externally, said concrete and its peripheral concrete can produce synchronous deformation, its produced strain extent is the strain valve of said pile-body concrete. The invented sensing technique is a distributed data acquisition, namely, it can obtain the strain data of every point of pile-body. Said invention can utilize these data to implement detection and analysis of cast-in-place pile.

The present invention is one kind of environment friendly composite emulsified asphalt material for grouting and repairing cracks in highway and building. The composite emulsified asphalt material consists of emulsified asphalt40-90 weight portions, powdered inorganic material 50-90 weight portions, nanometer material 5-10 weight portions, polymer emulsion 20-40 weight portions and water 30-80 weight portions mainly. The composite emulsified asphalt material has nanometer particle component with unique surface effect, small size effect and tunnel effect, polymer emulsion component resulting in high interface combining force and high antiaging performance, and inorganic material powder component resulting in high wear resistance, high strength, etc., so that it has high comprehensive performance, good crack repairing effect and low cost.

The invention provides an electromagnetic shielding conductive coating and a preparation method thereof. The electromagnetic shielding conductive coating comprises film-forming substances, conductive powder, thickening agents, coupling agents and curing agents. The mass ratio of the film-forming substances to the conductive powder to the thickening agents to the coupling agents to the curing agents is 5-20:50-75:5-30:0.7-4:6.5-15. Auxiliaries are added into the film-forming substances and stirred to be completely dissolved, the thickening agents are added into mixture, the coupling agents are then added into the mixture, the conductive powder is added into the mixture after stirring, and the curing agents are added into the mixture, so that the electromagnetic shielding conductive coating is obtained. By means of composition and proportioning for the conductive coating, the prepared coating is excellent in electric conductivity and resistant to acid, alkaline and oxidization. Besides, the resistivity of the conductive coating prepared by the preparation method is continuously reduced, and conductive high molecular polymer for the conductive powder in the conductive coating is well compatible with organic resin, so that air bubbles and needle holes in the coating can be decreased.

The invention relates to an environment-friendly road surface ice and snow melt coating material, a preparation method thereof and a using method thereof. Serious consequences such as traffic jam and the like can be caused by snow accumulation in winter; and at present, a snow removal method comprises passive snow removal and active snow removal, wherein in the passive snow removal, the operating efficiency of manual snow removal is low, mechanical snow removal is incomplete relatively in clearing, and for the spreading of a snow melt agent, substances with the snow melt effect are mixed simply only, so the spreading is non-uniform, and the snow melt agent dispersed to peripheral air has the major influence on environment; and the active snow removal is high in cost, and has a certain damage to structures of road surfaces, so the service life of roads is shortened. In the environment-friendly road surface ice and snow melt coating material, after being loaded on a carrier material, the snow melt substances are mixed with emulsified asphalt, water-soluble epoxy resin and a curing agent and sprayed on the road surfaces to form an ice and snow melt coating, so that the roads have the function of melting snow actively. By the environment-friendly road surface ice and snow melt coating material, an ice point of water is reduced to between -5 and -20 DEG C so as to clear the ice and snow of the roads, and the coating material has the sustained-release function, is high in coating adhesivity and wear-resisting effect, low in cost and convenient to maintain, and can prolong the life of the road surfaces effectively.

The invention provides a diamond rope saw static force cutting method, relating to a diamond cutting method. In the invention, an adopted hydraulic pressure diamond rope saw is driven by an hydraulic motor to move at a high speed around the cut surface of a cutting object (4) so as to cut the cutting object (4); the grinding material of diamond rope saw (5) is diamond particles, so the diamond rope saw can be used for cutting stone, reinforced concrete or other hard materials; the power source of the cutting is the hydraulic motor, a hydraulic pump is driven by the hydraulic motor to operate smoothly; and the hydraulic motor can be distantly controlled by a high-pressure oil pipe to reduce vibration and noise in cutting process and enable the cutting object (4) is cut and separated stably. The invention has the advantages of high safety and efficiency and environment protection.

The invention provides a construction method for a soft rock deformation tunnel lining support dismantling-replacing arch. One-time whole section integral dismantling and replacing of a lining support is achieved. The construction method has the advantages that before dismantling and replacing, a lining which loses bearing capacity is subjected to grouting reinforcement treatment first, then a temporary cover arch is additionally arranged outside for reinforcement, and afterwards, the lining support is dismantled step by step, so that potential safety hazards caused by dismantling or removing of a temporary platform frame are avoided, and some security risks are avoided effectively. According to the construction method, the construction difficult problem of soft rock large deformation occurs during construction of a tunnel in special and complex geology is solved. Through the created novel construction method, the construction difficult problem of second lining cracking deformation needing remediation due to weak surrounding rock large deformation is solved. Through the construction method, safe, fast and economic treatment and remediation of the lining support and arch replacing construction are achieved, and the tunnel structure stability and construction safety are ensured effectively.

The invention relates to a fluorocarbon nanometer solar heat-insulation reflective paint, a preparation method thereof and a using method thereof. The paint can be used for roofs and glass curtain walls of the building industry, offshore drilling platforms, oil tanks and petroleum pipelines of the petroleum industry, the surfaces of cars and trains of the transportation industry, hulls and decks of the ship-building industry, and the tanks and warships of the weapon and aerospace industry. The fluorocarbon nanometer solar heat-insulation reflective paint comprises a component A and a component B, wherein the component A comprises the following materials in percentage by weight: 40%-70% of fluorocarbon resin, 1%-10% of nanometer TiO2 concentrated slurry, 10%-30% of infrared-ray reflective pigment, 3%-10% of hollow micro beads, 1%-5% of auxiliaries and 10%-20% of organic solvent; and the component B is cross-linking agent. The preparation method for the fluorocarbon nanometer solar heat-insulation reflective paint comprises the following steps: 1) preparing, dispersing and grinding the materials of the component A in proportion until the fineness is lower than 30 microns; and 2) mixing and curing the component A and the component B to prepare the fluorocarbon nanometer solar heat-insulation reflective paint. The fluorocarbon nanometer solar heat-insulation reflective paint provided by the invention is suitable for normal-temperature drying or low-temperature baking and drying; moreover, a coating film formed by the paint has the characteristics such as high reflectivity, a good heat-insulation effect, high corrosion prevention, high weather resistance, high self-cleanness, low friction and the like.

The invention discloses nano-silica sol-modified outer wall paint and a preparation method thereof. The nano-silica sol-modified outer wall paint comprises, by weight, 10-25% of nano-silica sol, 0.1-0.2% of a coupling agent, 0.2-2.0% of a neutralizer, 10-30% of an acrylic emulsion or a styrene-acrylic emulsion, 10-15% of a pigment, 10-20% of a filler, 0.2-0.4% of a dispersant, 0.2-0.4% of a wetting agent, 0.3-2.0% of a thickening agent, 0.2-0.4% of an antifoaming agent, 0.4-0.6% of a mildew-resistant antiseptic, 0.6-1.4% of an antifreezing agent, 0.4-1.2% of a film forming assistant and 20-30% of deionized water. The invention also provides the preparation method of the nano-silica sol-modified outer wall paint. The nano-silica sol-modified outer wall paint has good storage stability and can form a paint film which does not effloresce and fall off easily, has good permeability, does not mildew easily, and has excellent water resistance and alkali resistance.

The invention discloses a supporting and reinforcing structure of a coal mine tunnel and a construction technology thereof. The supporting and reinforcing structure of the coal mine tunnel comprises a lane, wherein a grid-shaped reinforced layer is arranged on the inner wall of the lane, an anchor rod is arranged on the grid node portion of the reinforced layer, the inner end of the anchor rod is anchored in surrounding rock of the lane, and an anchor plate and a nut of the anchor reinforced layer are arranged at the outer end of the anchor rod. A concrete spraying layer covered on the reinforced layer and arranged at the outer end of the anchor rod is further arranged on the inner wall of the lane, a grouting anchor rod is arranged in the surrounding rock of the lane, an anchor cable is further arranged in the surrounding rock of the lane, the inner end of the anchor cable is anchored in the surrounding rock of the lane, and the outer end of the anchor cable is anchored on the outer side of the concrete spraying layer through a tray and a tensioning lock. The supporting and reinforcing structure of the coal mine tunnel integrates the surrounding rock of the lane in cementing mode with the initiative supporting theory as the guidance, prestress is reserved in the rock body, and stress is released and superimposed slowly, so that self integral strength and stability of soft rock and coal body are improved, the surrounding rock in a release ring of the lane can form a structure relatively homogenous and stable, and the aim of reinforcing and protecting the soft rock lane can be achieved within a long time.

The invention provides a transparent vacuum pipeline which is characterized by consisting of a pipeline framework and a transparent sealing plate, wherein the pipeline framework is provided with an inner-layer sealing supporting ribbed plate and is provided with a technical sealing plate insertion slot. when in need of maintenance, a technical sealing plate is inserted between the inner-layer sealing supporting ribbed plate and an outer-layer pipeline, so that the whole easy-to-break outer-layer pipeline cannot leak in replacement and maintenance processes, and normal passing of trains in the pipeline cannot be affected; non-stop maintenance is realized, the phenomenon that the whole high-speed railway stops running due to damage to the pipeline or maintenance of the pipeline is avoided, energy for vacuumizing at each time is saved, and a vacuum pipeline high-speed railway technology is more energy-saving.

The invention relates to a gelation-delayed in-situ polymerized water shutoff gel for high-temperature reservoirs, which consists of 5 to 7 percent by weight of main agent, 1 to 2 percent by weight of solubilizer, 1 to 2 percent by weight of cross-linking agent, 0.1 to 0.8 percent by weight of initiator and the balance of water, the main agent consists of monomer A and monomer B, the mass ratio of the monomer A to the monomer B is 3:1 to 5:1, the monomer A is acrylamide, and the monomer B is ester. Under high temperature, the pumping time of the gel is relatively longer, the gelation time canbe controlled at 20 to 72 hours under 120 DEG C, the final set strength can reach visual observation code level I, the synaeresis of the gel does not take place in 90 days, and the gel can be used inwater shutoff operation for high-temperature reservoirs under 90 DEG C to 140 DEG C. Because the gel has the advantages of good pumping property, high plugging strength, long service life, simple construction process and the like, the gel has a broad application prospect in chemical profile modification and water shutoff for oil fields.

The invention discloses a special composite isolation layer for ecological restoration of side slopes of an acid waste-rock yard, comprising a plastic biaxial geogrid, a soil improvement layer and a water discharging plate. The invention further discloses a method for ecological restoration of the side slopes of the acid waste-rock yard, comprising the following steps: arranging the composite isolation layer, an ecological rod, a geogrid mesh, a base material layer and a seed layer on side slopes, leading the plastic biaxial geogrid, the ecological rod, the composite isolation layer, the base material layer and the seed layer to act mutually, effectively improving the growth conditions of plants and leading the growth of the plants to have sufficient water and nutrients. The invention better realizes the ecological restoration and creation of ecological landscapes on the side slopes of the acid waste-rock yard without conditions for plant growth, and simultaneously guarantees the structure and stability of the side slopes, thus achieving the purposes of greening and beautifying the environment, conserving water and soil and inhibiting runoff, also having simple construction technique, easy implementation and high efficiency and being suitable for large-area application.

The invention discloses a water-based baking paint for a glass substrate and a preparation method and the application thereof; the formula of the water-based glass baking paint comprises the following components in parts by weight: 45 to 63 percent of water-soluble acrylic resin, 5 to 7 percent of methylated amino resin, 5 to 15 percent of water-based paste, 1.2 to 1.5 percent of coupling agent, 2 to 5 percent of additive and 25 to 30 percent of deionized water. When the baking paint is prepared, first the water-soluble acrylic resin, defoamer, wetting agent, leveling agent, dispersant and some water are sequentially added into a stirring tank to be stirred, is added with the water-based slurry and the like to be stirred and dispersed at high speed; and finally the methylated amino resin, the coupling agent and the rest water are sequentially added in to be stirred into a uniform coating system. The invention also provides a use method of the glass baking paint. When being applied to ground glass, hard glass and other substrates, the coating has the advantages of simple preparation process, convenient construction, strong coating adhesion, high hardness, water resistance, good heat resistance and the like.

The invention discloses a high-performance epoxy bitumen mixture easy to construct and maintain, comprising four components of A, B, C and D. The high-performance epoxy bitumen mixture easy to construct and maintain is characterized in that the component A mainly comprises epoxy resin, a toughening agent, an accelerating agent and a diluent agent; the component B mainly comprises a curing agent, an accelerating agent, a compatilizer and a diluent agent; the component C comprises bitumen; the component D comprises aggregates and mineral powder, wherein the ratio of the component A to the component B is 100:50 to 100:100; the ratio of the sum of the component A and the component B to the component C is 100:100 to 100:160; and the ratio of the sum of the component A, the component B and the component C to the component D is 6:94 to 7:93. The high-performance epoxy bitumen mixture easy to construct and maintain has the characteristics of excellent mechanical property, temperature resistance, water resistance, solvent corrosion resistance, fatigue durability, simple construction process and short maintenance time. The high-performance epoxy bitumen mixture easy to construct and maintain is suitable for paving and maintenance of road surfaces, such as steel bridge floors, cement concrete bridge floors, tunnels, expressways and the like. The invention also discloses a preparation method of the high-performance epoxy bitumen mixture easy to construct and maintain.

The invention relates to an assembled reinforced-concrete framework beam-column joint adopting vertical bolt connection. The joint comprises a corbel of a precast column and a precast beam, wherein the end face of the corbel and the end face of the precast beam are respectively provided with a concave groove and a convex block which are matched with each other and are respectively provided with a vertical corbel bolt hole and a vertical precast beam bolt hole; and the corbel is matched with the precast beam along the length direction of the precast beam in an embedded fixing manner, bolt cushion plates are arranged at the upper and lower sides of the corbel and the precast beam after the corbel and the precast beam are fixed in an embedding manner, and a bolt vertically penetrates through the bolt cushion plates, the corbel bolt hole and the precast beam bolt hole so as to carry out fixing. A corresponding construction method comprises the steps of precasting, mounting and filling mortar in gaps. The joint and the corresponding construction method have the advantages that the smoothness of force transmission between the precast beam and the precast column is achieved, the joint is reliable in connection and simple in structure, the construction process is simplified, the on-site assembling time is saved, and the production efficiency can be effectively increased.

The invention relates to a functional real stone paint building exterior wall coating material and a preparation method thereof. The functional real stone paint building exterior wall coating material is composed of the following components in parts by weight: deionized water, hydroxyethyl cellulose, an aqueous multifunctional addition agent, a real stone paint special silicone acrylic emulsion, a coalescing agent, an aqueous defoamer, a sterilizing corrosion remover, a hydrophobing agent and natural colored sand. The functional real stone paint building exterior wall coating material prepared by the invention is formed with one construction process and strong in covering power with surface covering-free performance, simultaneously is excellent in water resistance, stain resistance and weather resistance performance.

The invention provides a preparation method for wear resistant fire-retardant coating with simple construction process, good wear resistance and relatively low cost. The raw material of the wear resistant fire-retardant coating selects plate-shaped tabular alumina, brown alumina and high-quality bauxite chamotte as aggregate, selects plate-shaped tabular alumina powder, flint clay powder, alpha-Al2O3 micropowder and ceramic powder as fine powder, selects 42.5 mass percent industrial phosphoric acid solution, solid aluminium dihydrogen phosphate and clay powder as bonding agents, selects fused magnesite as a curing agent and selects sodium borate and sodium hexametahposphate as sintering aids. The wear resistant fire-retardant coating can be directly smeared on the surfaces of a wear resistant fire-retardant material liner and a water cooling wall pipe, fills up technical blank of resisting the wear on metal by using a non metal coating at a high temperature of 900 DEG C, provides a new repairing method for a non metal wear resistant fire-retardant material liner, has simple construction process, can obviously improve working environment of workers, reduce the labor intensity and improve the working efficiency of maintaining a circulating fluid bed boiler heated surface metal pipe wall and the wear resistant fire-retardant material liner.

The invention is a case expanding anchor shank, composed of case expanding anchoring head, anchor shank body, supporting backing plate, fastening nut, washer, and connecting pipeline, where the anchoring head is composed of inner wedge and two clamp pieces, the clamp pieces are fixed in the open slots on two sides of the inner wedge, the lower part of the inner wedge is connected with the anchor shank body, two sides of the top of the inner wedge have the open slots with inclined wedges in the middle of the top, forming double-face wedge sliding slots; the insides of the clamp pieces have inclines to cooperate with the inclined wedges, respectively. The anchor shank is installed and can rapidly form shoring anchoring force, to control rock mass deformation, both acting as permanent both temporary shoring and can be applied to shoring on most conditions of lithoid surrounding rock.

The invention relates to a flexible umbrella supporting anchor bolt and a method for supporting a soil slope thereby. An end ring and an end circular connector are fixedly disposed at one end of a round anchor bolt. A spring circular connector and a middle ring are fixedly disposed in the middle of the round anchor bolt. A lower circular connector adjacent to the right side of the middle ring movably sleeves the round anchor bolt. A drag umbrella surrounding the round anchor bolt comprises reacting plates evenly arranged, pull rods and compression springs. One end of a flexible pull rope is fixed to a round hole arranged in the other end of the round anchor bolt. More than one flexible umbrella supporting anchor bolt is connected with a soil high slope protective structure, composed of a geogrid mesh, a vegetation protective layer and a retaining wall, through the flexible pull ropes, and a whole for firmly and reliably anchoring and protecting the soil high slope is formed. The umbrella reacting plates are connected with the protective structural mesh through the flexible pull rope, anchoring force is greatly higher than that of a traditional anchor bolt, anchoring effect is more reliable, and engineering cost can be decreased by 50-60%.

The invention provides a soft soil foundation treated by chemical solution-combined injection electroosmosis method and a construction method of the soft soil foundation, and belongs to the technical field of processing of the soft soil foundation. A metal electrode is inserted into the soft soil foundation; different chemical solutions are injected into a positive electrode and a negative electrode respectively, and a direct current is fed; under a direct current field, water and a cation solution which have positive charges flow towards the negative electrode, and an ion solution with negative charges flows towards the positive electrode so as to form electroosmosis chemical reaction; at the same time, the water is pumped and discharged from the top of the negative electrode so as to reduce the water ratio in the soil, accelerate concretion and compaction of the soil, and enhance the strength of the soil; and precipitates produced by the chemical reaction can cement the soil particles. Compared with other soft soil foundation treatment methods, the construction method has the advantages of more environment friendliness, lower energy consumption and saved treatment cost, and large-size mechanical equipment and building materials such as cements, sand, stones and the like are not required. By the method, the construction process is simple, the operability is high, the quality is convenient to control and detect, and the intensity of the soil is enhanced obviously.

The invention relates to the technical field of a composite material with a core shell structure and provides a surface chemical plating treatment process for hollow glass microspheres. The surface chemical plating treatment process comprises the following steps: carrying out alkaline wash and hydrogen peroxide wash before plating to coarsen and hydroxylate the surface of the hollow glass microsphere; and carrying out chemical plating on the processed hollow glass microsphere to obtain a metal-plated hollow glass microsphere. In the method, complex preprocessing technology, such as sensitization, activation and the like in the existing method, can be simplified, and the use of expensive stannous chloride and palladium chloride which are not environmentally-friendly is avoided. Compared with the existing hot alkaline liquor processing method, the process provided by the invention has the advantages that possible microsphere fracture caused by the long-time soaking in the alkaline liquor can be avoided, and the surface hydroxylation efficiency of the hollow glass microsphere can be greatly increased by using hydrogen peroxide. The hollow glass microsphere processed with the method is easy to plate. The obtained metal-plated hollow glass microsphere has the advantages of a complete metal layer, light weight, good electrical conductivity and the like. When the obtained metal-plated hollow glass is used as a filler, material density can be lowered, cost is lowered, mechanical property is enhanced, and the plated metal hollow glass microsphere is applied to the aspects of staticelectricity coating, electromagnetic wave interference coating, wave adsorption coating and the like.

The invention relates to a glass fiber reinforced cement (GRC) insulation decorative wallboard and a production method thereof, which are applicable to structural envelope, heat insulation and decoration of an external wall for a building of a frame structure. The GRC insulation decorative wallboard comprises a decorative layer, a GRC structural layer I, a GRC structural layer II, an insulating layer, a GRC reinforcing rib, steel frames, an installation connection piece, a lifting ring and an anti-cracking material, wherein, the GRC structural layer I is compounded on the decorative layer andis equipped with the insulating layer; the GRC structural layer II is arranged on the insulating layer, and the GRC reinforcing rib is arranged in the insulating layer; the GRC structural layer I is connected with the GRC structural layer II through the GRC reinforcing rib; the steel frames are arranged in the GRC structural layer I, the GRC structural layer II and the reinforcing rib; and the anti-cracking material is laid in the GRC structural layer II.

The present invention discloses a cinderless railroad bed and its construction method. Said cinderless railroad bed has the characteristics of high strength, large rigidity, good stability and durability, and includes the following several portions: reinforced concrete supporting piles which are longitudinally spaced and arranged along the railroad bed; reinforced concrete bearing plates which are rigid fixedly connected in the upper end of said reinforced concrete supporting piles; and earth railroad bed which is filled between the reinforced concrete bearing plates and railroad bed foundation. Besides, said invention also provides the concrete steps of its construction method.

The invention discloses a method for preparing a patch mortar additive and patch mortar for concrete. The additive comprises a component A which comprises the following substances in portion by weight: 4 to 8 portions of silica powder, 10 to 12 portions of S105 slag powder, 8 to 10 portions of I-grade fly ash, 8 to 10 portions of UEA swelling agent, 0.3 to 0.5 portion of polycarboxylate type superplasticizer (powder), and 0.3 to 0.4 portion of polypropylene fiber. Further, the additive can also comprises a component B consisting of phenylpropyl emulsion, water, organosilicon antifoaming agent and OP-10 nonionic surfactant. The method for preparing the patch mortar for the concrete comprises the following steps: weighing the following substances in portion by weight: 100 portions of cement, 200 to 300 portions of yellow sand, and 30 to 40 portions of the component A; and after the mixture is mixed and stirred evenly, gradually adding the water or the component B into the mixture, and mixing and stirring the mixture to form the mortar of which the consistency is between 30 and 70 millimeters. The patch mortar can be well combined with the prior concrete, and can be used for patching concrete cracks and patching concrete defects and corroded and damaged surfaces.

The present invention relates to poured road surface laying material, and is especially one kind of poured epoxy asphalt concrete material with low construction temperature, high flowability and construction convenience and its preparation process. The poured epoxy asphalt concrete material consists of component A and component B in the weight ratio of 8-50 as well as stone material in the amount of 3-9 times the component A. The component A consists of asphalt 45-90 weight portions, epoxy resin 4.5-36 weight portions, modified alkylphenol 9-27 weight portions and glycidol ether 0-3 weight portions, and the component B is curing agent. The poured epoxy asphalt concrete material is prepared through mixing the materials of the component A, stirring at 120-160 deg.c, adding stone material, and final adding the heated curing agent and maintaining the temperature for 0-120 min.

The construction method of rockfill-concrete dam is one dam constructing method as the combination of concrete construction technology and rockfill dam construction technology and adopting one kind of concrete material with good flowability and high material separating resistance. The construction method of the present invention includes using un-sieved or initially sieved rockfill, introducing coarse aggregate in rockfill dam constructing process, pre-embedding grouting pipes to parts to form concrete, grouting concrete via the grouting pipes to void in rockfill to from the rockfill-concrete dam. With rockfill as aggregate can reduce cement consumption, lower cost, speed construction, lower the hydration heat of concrete, simplify process and reduce construction links.

The invention belongs to the technical field of foundation pit supporting for high-rise buildings, in particular to a foundation pit support construction method combining horizontal rotary jet-grouting soil bolting and bore concrete piles, which includes steps: firstly, constructing water-stop mixed piles and bored concrete piles according to a preset foundation pit; and secondly, performing soil excavation and soil bolting layer by layer and section by section. The foundation pit support construction method has the advantages that the foundation pit support constructed by the method is high in deformation control performance and stability and especially applicable to projections with high requirements on foundation pit deformation, and the method is applicable to mega-area foundation pit supporting in soft soil areas with failure of using internal support structures, limited slope reduction conditions and excavation depth limited within 15m, and meets the requirement that development and utilization of urban underground space continue to develop.