15results about How to "Mature construction technology" patented technology

A durable composite anticorrosive coating for a concrete structure of a road in a cold region belongs to the technical field of building materials, and adopts the specific scheme that the composite anticorrosive coating comprises an inner coating and an outer coating, the inner coating is coated on a concrete base surface, the outer coating is coated on the inner coating, and the outer coating is coated on the outer coating. The inner coating is a single-component epoxy resin interface bonding layer, and the outer coating is a single-component MMA resin sand-containing anti-corrosion layer. Through the composite structure design of the epoxy resin interface bonding layer and the MMA resin sand-containing anti-corrosion layer, the advantages of high permeability and strong bonding characteristics of epoxy resin and the advantages of rapid curing, high wear resistance, wide temperature range (still keeping toughness at-40 DEG C) and good weather resistance of MMA resin are fully played, and the efficient and lasting protection effect is achieved.

The invention discloses a prestressed industrial and mining engineering concrete special-shaped pile and a construction method thereof. The special-shaped pile comprises a pile body, a concrete foundation arranged at the end of the pile body and a prestressed anchoring part arranged in the pile body and connected with the concrete foundation. The pile body comprises a steel pipe retaining wall, a vertical rib arranged in the steel pipe retaining wall, a restraining assembly arranged on the vertical rib in a sleeving mode and a concrete pile arranged in the steel pipe retaining wall in a filling mode. The concrete foundation comprises a lower base and an upper base which are clamped at the bottom ends of the two ends of the pile body; the prestressed anchoring part comprises an anchor rod penetrating through the concrete pile and anchoring discs connected with the two ends of the prestressed anchor rod. The special-shaped pile is of an assembly type structure, the pile body and the concrete foundation are assembled in a prestress tensioning mode through the prestress anchoring part, the production technology is simple, the standardization degree of prefabricated parts is high, the construction technology is mature, the on-site assembly quality and construction efficiency of the concrete special-shaped pile can be effectively improved, and the special-shaped pile is suitable for application and popularization.

The invention discloses a grouting reinforcement method for a karst area. The grouting reinforcement method comprises the following steps that S1, karst detection is conducted; in combination with early-stage geological data, an elastic wave CT (Computed Tomography) method and a borehole television imaging method are used for carrying out geological supplementary investigation, and the position distribution, the range size, the filling condition and the water-endowed state of the karst cave are determined; s2, defining a processing range; according to a detection result and engineering geological conditions, defining a karst treatment range; s3, grouting reinforcement construction is conducted, specifically, reinforcement is conducted by combining a filling method and a grouting method according to the geological conditions of the tunnel body engineering, the surrounding environment and the construction technology; s4, quality acceptance: arranging inspection holes according to 5-10% of the total grouting holes, and completing grouting reinforcement construction after all the grouting holes meet the end standard and the inspection holes meet the design requirements; the karst area grouting reinforcement method can be suitable for grouting reinforcement of multiple types of karst areas, slurry is evenly diffused during reinforcement, and the bearing capacity and stability of a foundation are improved.

The invention discloses a natural landscape revetment and a construction method thereof, and belongs to the technical field of landscape engineering, and the main body structure of the revetment sequentially comprises a rammed earth layer, a soil layer layered rolling layer and a sandy soil layer from bottom to top; 3-5 pieces of decoration scene stone are arranged in an upstream proper area every 12-15 m; a 2.5-3.5 m aquatic plant planting area is arranged in the midstream; the method comprises the following steps: arranging a wood pile at the downstream, arranging sandy soil, a wood bundle and the wood pile at the upstream area of the wood pile, adopting wickers of 1-5cm and 40-50cm in length as the wood bundle, nailing the wood pile into the soil by 1.5 m according to the distance of 1m, scion, and binding the wood bundle and the wood pile. According to the revetment, natural elements and ecological functions are combined, the construction method is simple and feasible, the stability of the revetment can be effectively enhanced, meanwhile, the attractive and natural landscape effect is created, and good ecological benefits and landscape value are achieved.

The utility model provides a road shoulder soil retaining structure, which relates to the field of supporting structures, and comprises a flange plate, a beam rib column and a connecting beam, the flange plate is arranged at the top of the connecting beam, the beam rib column is arranged at the top of the connecting beam at one end of the flange plate, and a round cast-in-situ bored pile is arranged at the bottom of the connecting beam. The T-shaped soil retaining structure is formed by the flange plates, the beam rib columns and the connecting beams, the road shoulder soil retaining structure adopts the cast-in-situ bored piles as pile foundations, the construction process is very mature, the construction quality is controllable, and the built-in depth can be calculated according to a cantilever type soil retaining structure; the connecting beams are arranged at the tops of the pile foundations, so that the flange plates, the beam rib columns and other supporting units can be connected into an integral T-shaped road shoulder soil retaining structure, and the integrity and the stability of the supporting structure are enhanced; the T-shaped soil retaining structure above the ground can be poured through a formwork, the process is simple, and soil body backfilling and roadbed pavement construction within the roadbed range can be carried out after the concrete strength meets the design requirement.

This utility model discloses a highly permeable retaining wall structure for road cuts. The structure includes a wall body segmented with settlement joints, an internal drainage system, and a multi-stage reverse filtration drainage system along the entire height of the wall back. The multi-stage reverse filtration drainage system, from the wall body towards the backfill soil, consists of a permeable geotextile isolation layer, a first-stage coarse gravel reverse filtration layer, a second-stage medium gravel reverse filtration layer, and a third-stage fine gravel reverse filtration layer. Geogrids are installed between each reverse filtration layer, and a permeable geotextile isolation layer is also installed between the third-stage fine gravel reverse filtration layer and the backfill soil. The drainage system includes multiple rows of drainage pipes extending into the first-stage coarse gravel reverse filtration layer, each with permeable geotextile filter sleeves at its inlet ends. This utility model, through the combination of multi-layer reverse filtration and three-dimensional drainage, forms a highly efficient and clogging-resistant drainage channel, rapidly draining water accumulated behind the wall, greatly reducing hydrostatic pressure, and significantly improving the long-term stability and safety of the retaining wall.

The invention discloses early-strength high-impermeability low-resilience shotcrete and a construction method thereof, and relates to the technical field of shotcrete. The sprayed concrete is prepared from the following raw materials in parts by mass: 300 to 400 parts of cement, 800 to 850 parts of coarse aggregate, 750 to 850 parts of fine aggregate, 30 to 50 parts of an early strength component, 20 to 30 parts of an alkali-free liquid accelerator, 20 to 30 parts of a micro-expansion component, 10 to 20 parts of a compact component, 5 to 10 parts of a thixotropic component, 5 to 10 parts of a humidity control component, 4 to 8 parts of a water reducing agent and 150 to 160 parts of water. The sprayed concrete provided by the invention is good in workability, excellent in water retention effect and small in slump loss, and can meet the requirements of high-temperature seasons and long-distance transportation; the early strength is high, the 6-hour compressive strength is larger than or equal to 3 MPa, the 24-hour compressive strength is larger than or equal to 10 MPa, and the compressive strength is higher than The rebound amount in the construction process is low (less than or equal to 6%), and the problems of waste of a large amount of building materials, cost increase, environment pollution, construction difficulty and the like are solved; after construction, the internal compactness of the structure is high, the anti-cracking effect is good, and the problem of water leakage is solved.

This invention relates to the field of slope ecological restoration technology, and discloses a rapid revegetation technology for steep slopes in western Sichuan and its application. This technology uses an oxidized polyacrylamide (PAM) vegetation substrate to construct a layered composite vegetation structure. Through graded spraying, a bottom erosion-resistant layer and a surface ecological growth layer are formed, achieving stable adhesion and rapid consolidation of the vegetation substrate on steep slopes. The modified polyacrylamide has an oxidation degree of 1.0%–5.0% and an addition amount of 0.1%–0.4%, which significantly improves the water retention, compressive strength, freeze-thaw resistance, and erosion stability of the vegetation substrate, and effectively promotes rapid plant establishment and growth. The method includes slope pretreatment, layered spraying, and maintenance management, and is suitable for ecological restoration projects on steep rocky slopes in western Sichuan with slopes of 30°–60° and altitudes of 1000–3500 m. It features high construction efficiency, rapid ecological restoration, and good long-term stability.

The utility model relates to silt treatment technical field, concretely relates to a multistage sand arresting dam irrigation canal system. The utility model discloses main inlet channel, first branch canal, second branch canal, is equipped with the shunt pool between main inlet channel and first branch canal, and there is connecting underground passage between first branch canal and second branch canal. Each level channel is T type, and is equipped with the sand arresting overflow dam of height gradually reducing and the sand discharge gate of diameter gradually reducing respectively. The bottom of shunt pool is 3 degree inclination inclined plane, and is connected with first branch canal through shunt gate. The system can effectively reduce downstream channel silt accumulation through multistage sand arresting overflow dam step by step intercepting silt, discharging again through sand discharge gate, has the advantages such as good sand arresting effect, low engineering cost, low maintenance cost, wide application range, can solve the silt problem of high fine sand containing water irrigation channel, guarantees agricultural irrigation stability.

This utility model relates to the field of road engineering technology and discloses a frost heave and differential settlement control structure suitable for culvert sections in cold regions. The structure, from top to bottom, includes a roadbed, a fill matrix, a stepped aggregate layer, a stepped high-strength foamed concrete layer, and a culvert. A main drainage pipe is inclinedly arranged in the aggregate layer, and lateral drainage pipes are provided on both sides of the roadbed slopes to drain moisture from the roadbed. The high-strength foamed concrete layer is laid above and on both sides of the culvert, providing good thermal insulation to address freezing issues exacerbated by wind tunnel effects, and buffering the frost heave force of the surrounding soil to prevent direct frost heave force from causing compression damage to the culvert structure. This structure forms a multi-level stiffness transition from flexible to semi-rigid along the culvert transition section of the roadbed, reducing differential settlement and misalignment risks at the connection between the culvert and the roadbed, improving the overall stability of the roadbed and driving safety. The overall structure is reliable, easy to construct, and suitable for widespread application in cold regions.

The invention discloses an anti-seismic toughness improving method for additionally arranging rubber sand walls on two sides of an existing shallow buried underground structure, and belongs to the technical field of tunnel engineering. Aiming at the existing underground structure with seismic reinforcement requirements, the method comprises the following steps: firstly, determining parameters of rubber sand to be adopted according to basic physical property indexes of rubber particles, basic physical property indexes of sand, field engineering conditions and the seismic grade of the existing shallow buried underground structure to be reinforced, and preparing a rubber sand shock-absorbing material; determining design parameters of a rubber sand wall according to geometric parameters, field engineering conditions and a construction scheme of the to-be-reinforced existing shallow buried underground structure, additionally arranging the vertical and continuous rubber sand wall with proper rigidity and thickness on the field close to the two sides of the underground structure, and utilizing the characteristics of deformation absorption, damping energy consumption and the like of the rubber sand wall to reinforce the existing shallow buried underground structure. Seismic energy transmitted to the underground structure from surrounding sites is reduced, so that the seismic response of the tunnel structure is reduced, and the aim of improving the seismic toughness of the existing tunnel is achieved.

The invention provides a treatment method for wedge-shaped landslide, and relates to the technical field of landslide treatment, and the technology comprises the following steps: step 1, according to the size and shape of a landslide body, arranging an intercepting ditch around the landslide body; 2, a foot protection retaining wall is arranged at the front edge of the landslide body along the boundary line of the landslide body, and a drainage ditch is formed in the front edge of the foot protection retaining wall; thirdly, a drainage gallery is excavated in the sliding bed in the length direction of the landslide mass towards the inclined core part; fourthly, a row of embedded anti-slide piles are arranged in the position, perpendicular to the length direction of the inclined core part, of the half position of the maximum residual sliding force of the landslide mass; and fifthly, a row of anchoring piles are arranged at the position, with the relatively small maximum residual sliding force, of the landslide mass in the direction perpendicular to the length direction of the inclined core part. The treatment method is provided according to the characteristics of the wedge-shaped landslide, the related supporting system construction technology is mature, and compared with a conventional landslide treatment mode, the engineering cost is effectively reduced.

The invention belongs to the field of mine disaster control, and particularly relates to cooperative regulation and control of coal mine mining overburden moving hyperbolic curvature and bearing pressure so as to achieve the purpose of disaster reduction and suppression. The method is characterized in that the curvature of the vertex position of a hyperbolic-like curve of an overlying rock stratum is changed by cutting the top at the theoretically determined position of a main key layer, and the curvature of the vertex position of the hyperbolic-like curve is reduced after the top is cut; meanwhile, the mining bearing pressure peak value and the influence range are reduced, the bearing pressure optimization effect is obvious, and mine disaster control is achieved. After top cutting, the fracture block of the main key layer rotates to extrude the lower overhanging rock stratum, and the overhanging part of the lower rock stratum also has chain type fracture. According to the quantitative relation between the vertex curvature of the rock stratum moving hyperbolic curve and the boundary mining-induced bearing pressure of the coal seam goaf, the accurate roof cutting position of the main key layer is determined, and the technology can be more accurately guided to be applied on site.

This invention discloses a solubilization and multiphase extraction remediation system and method for low-permeability organic-contaminated soil, relating to the field of soil remediation. The remediation system includes a solubilization reagent tank, a metering pump, an injection well, a drainage board, a horizontal well, a self-priming pump, and a tailings collection device. The remediation method involves injecting the solubilization reagent into the upper part of the low-permeability contaminated area using the metering pump. A horizontal well is constructed in the lower part of the contaminated area. A drainage board is installed through the low-permeability contaminated area, with its end hydraulically connected to the horizontal well. The extraction negative pressure generated by the self-priming pump drives the solubilization reagent through the drainage board, leaching the low-permeability soil layer before entering the horizontal well and finally entering the tailings collection device for purification. This invention utilizes the drainage board to improve the permeability of organic-contaminated soil and couples solubilization leaching with multiphase extraction technology, overcoming the bottleneck problem of difficult removal of organic pollutants in low-permeability soil layers. The operation process is simple, significantly shortening the remediation time, and has broad engineering application prospects.

The utility model discloses an expressway reconstruction and expansion soft foundation road section anti-settlement structure which comprises a longitudinal connecting batten, a transverse supporting batten, a longitudinal connecting batten, a transverse supporting batten, a longitudinal connecting batten and a transverse supporting batten, wherein the transverse supporting batten is welded below the longitudinal connecting batten; a splicing mechanism for connecting firmness is arranged above the longitudinal connecting battens; and an anti-sedimentation improving mechanism for enhancing the supporting strength is arranged above the transverse supporting plate strip. According to the anti-sedimentation structure for the reconstruction and expansion soft foundation road section of the expressway, the longitudinal connecting battens can be effectively spliced and lengthened by arranging the splicing mechanism, so that the connecting area of the longitudinal connecting battens and the hard subbase side can be enlarged, the connecting firmness can be greatly enhanced, meanwhile, the anti-sedimentation mechanism is arranged, and the anti-sedimentation effect is improved. By arranging the supporting bracket, the firmness of concrete pouring in the supporting bracket can be greatly enhanced, so that the supporting area and strength of a soft soil foundation can be increased, in addition, a stabilizing mechanism is arranged, the connecting stability of the longitudinal connecting battens and the hard subbase side can be enhanced, and the connecting firmness of the longitudinal connecting battens and the hard subbase side can be further enhanced.