17results about How to "Guaranteed grouting effect" patented technology

According to the post-grouting expanded-base composite tubular pile and the construction method, an expanded-base technology and a post-grouting technology are combined, pile end post-grouting can efficiently fill pores of an expanded-base part, the strength and compactness of a pile end soil body are remarkably enhanced, the bearing performance of a pile foundation is improved, meanwhile, the settlement amount of the pile foundation is effectively reduced, and the construction efficiency is improved. The stability and the safety of the building in the long-term use process are ensured; a technical solution; comprising a grouting pipe, a prefabricated tubular pile and a composite pile outer wrapping body. The grouting pipes are symmetrically arranged in the prefabricated tubular pile in the axial direction, the outer sides of the grouting pipes are wrapped with water stop adhesive tape, and the length of the grouting pipes is larger than that of the prefabricated tubular pile. A composite pile wrapping body is arranged on the outer side of the prefabricated tubular pile, the prefabricated tubular pile is in a cylindrical shape, the upper portion of the composite pile wrapping body is also in a cylindrical shape, and the lower portion of the composite pile wrapping body is in a circular truncated cone shape.

The invention relates to the technical field of goaf filling equipment, in particular to a grouting device for coal mine goaf filling, which comprises a support frame, a storage tank, a feeding pipe, a connecting pipe, a conveying mechanism and a blocking mechanism, and the bottom of the storage tank is fixedly connected with the top of the inner side wall of the support frame. According to the slurry storage device, the material blocking mechanism is arranged at one end of the conveying mechanism, slurry is conveniently conveyed into the material storage tank through the feeding pipe, the slurry in the material storage tank is stirred through the stirring assembly, the slurry is conveniently conveyed to one side of the material blocking mechanism through the conveying mechanism, and the number of second conveying pipes can be adjusted according to use requirements; the device is simple in structure and convenient to mount and dismount, a connecting plate, a first rectangular plate and a second rectangular plate are moved by starting two second motors, so that a rubber sleeve and four rubber pads are in extrusion contact with the inner side wall of a mine hole, slurry is prevented from flowing out of a gap between the material blocking mechanism and the mine hole, and the grouting effect during filling is guaranteed.

The application belongs to the technical field of tunnel and underground engineering disaster prevention and control, and particularly relates to a cement-polyurethane composite grouting material suitable for dense soft rock reinforcement and a preparation method thereof. The composite grouting material is mainly formed by mixing a penetration cross-linking liquid and a grout vein skeleton liquid. The penetration cross-linking liquid is formed by mixing a grouting material A component and a grouting material B component. A semi-prepolymer is obtained by pre-polymerization reaction of a polyisocyanate and a polyether polyol, and then a diluent and a catalyst are added to the semi-prepolymer to obtain the grouting material A component; a surfactant, a retarder and water are mixed to obtain the grouting material B component; and cement and water are uniformly mixed in a certain proportion to obtain the grout vein skeleton liquid. The cement-polyurethane composite grouting material and the preparation method thereof can achieve penetration-splitting composite reinforcement effect when grouting in a dense soft rock poor geological section with strong density and poor permeability, and the grout preparation process and grouting operation steps are more simple and efficient.

The invention discloses a pebble bed grouting reinforcement device and method, and belongs to the technical field of grouting reinforcement. The grouting head structure comprises a grouting outer pipe, an upper end plate and a lower end plate are arranged at the upper end and the lower end of the grouting outer pipe respectively, a through hole is formed in the middle of the upper end plate, a connecting sleeve is arranged in the middle of the inner side face of the lower end plate, a grouting inner pipe is arranged in the connecting sleeve, one end of the grouting inner pipe is connected into the connecting sleeve, and the other end of the grouting inner pipe is connected into the connecting sleeve. The other end of the grouting inner pipe penetrates out of the through hole of the upper end plate, a plurality of grout outlet holes are formed in the end, located in the grouting outer pipe, of the grouting inner pipe, an upper annular groove and a lower annular groove are formed in the outer side face of the lower end of the grouting outer pipe, and a mounting distance is formed between the upper annular groove and the lower annular groove. An upper annular sealing air bag and a lower annular sealing air bag are arranged in the upper annular groove and the lower annular groove respectively. The technical scheme is used for improving the grouting reinforcement effect of the pebble bed.

The invention discloses a construction method for improving the bearing capacity of a drilled prefabricated composite pile, belongs to the technical field of cast-in-place pile planting construction, and aims to meet the requirement for high bearing capacity of a cast-in-place pile foundation. The method is characterized by comprising the following steps: drilling: controlling a spiral drill rod to slowly descend and drill to form a pile hole; when a drill bit at the lower end of the spiral drill rod is 2-5 m away from the designed elevation of the pile bottom, cement paste starts to be injected through a grouting pipe; when the drill bit drills to the designed elevation of the pile bottom, the drill bit hovers and rotates for 1-3 min, and at the moment, the spiral drill rod and the drill bit do not descend any more, so that it is guaranteed that loose soil generated at the pile end and injected cement paste are fully stirred; drilling tool lifting: controlling the lifting speed of the drill bit to be lower than the ascending speed of the injected slurry, re-drilling to the bottom of the hole when the drill bit is lifted to the position 2-5m away from the pile bottom, continuing grouting and lifting, and stopping grouting until the drill bit is completely lifted to the outside of the pile hole; and hole bottom tamping is conducted, specifically, a prefabricated concrete pile is implanted into the pile hole, and tamping operation is conducted on the pile end to improve the bearing capacity of the pile end.

The invention relates to a bottom sealing grouting method for an anchor rod, an anchor cable and a sleeve under a shoe sleeve type underground water level line, which comprises the following steps: preparing bentonite slurry, cement slurry and water glass, and preparing a shoe sleeve; an outer sleeve and an inner drill rod are used for drilling at the hole position to form an anchor hole, and a grouting machine injects bentonite slurry into the outer sleeve through the inner drill rod; after the outer sleeve is filled with the bentonite slurry, one end of a pressure maintaining grouting device is connected with the outer sleeve, one end of an inner drill rod is connected with a power head of a drilling machine, and the other end of the inner drill rod penetrates through the pressure maintaining grouting device and extends into the anchor hole; grouting is conducted on the bottom area, located in the anchor hole, of the outer sleeve through the inner drill rod, so that a grouting consolidation body is formed at the bottom of the outer sleeve; and after the grout is solidified, the pressure maintaining grouting device and the inner drill rod are dismantled, and the shoe sleeve is jacked into the grouting solidification body.

The utility model discloses a road grouting device which comprises a slurry storage barrel arranged above a base, a grouting pump arranged on one side of the slurry storage barrel and communicated with the slurry storage barrel, and a grouting pump arranged on the other side of the slurry storage barrel and communicated with the grouting pump. The mounting cavity is formed in the lower end of the base, a grouting head is arranged in the mounting cavity, a grouting hose is arranged between the grouting head and a grouting pump, the two sides of the grouting head are each provided with a connecting plate, the number of the connecting plates is two, and third electric push rods are arranged above the two connecting plates; the grouting device comprises a base and walking wheel assemblies, the walking wheel assemblies are arranged below the base, the number of the walking wheel assemblies is four, the walking wheel assemblies are connected with the base through screws, the four walking wheel assemblies are arranged at the four corners of the base, and according to the grouting device, a grouting head can be accurately inserted into a grouting hole through an electric push rod, and the inserted grouting head can be limited; and the grouting head is prevented from loosening and falling off from the grouting hole in the grouting process, and the grouting effect is ensured.

The utility model discloses a built shield pipeline access branch pipe which comprises a construction land, sleeve valve pipes are symmetrically arranged in the construction land, a steel grating is arranged on the lower surface of a foundation pit inspection well, a shield pipeline is arranged on the lower surface of the steel grating, a steel support is arranged on the inner side of the steel grating, and a riding well pipeline is arranged on the other side of the steel support. And the lower surface of the riding well pipeline is connected with the upper surface of the shield pipeline. By means of the construction measures in the mode, the problem that dirty rainwater of a newly-built pipeline converges into a built shield pipeline can be solved; the situation that the whole access point position is reconstructed, and large manpower and material resources are consumed can be avoided; the construction period of the access point position can be shortened; the main pipeline can properly work with water according to conditions, and strict dry work is not needed; the damage to the surrounding road surface can be reduced, the settlement risk of the surrounding road surface is avoided, the measure can achieve multiple purposes, the construction cost is reduced, and higher economic benefits are created.

The invention belongs to the technical field of shield construction, and discloses a tunnel muck recycling system and a treatment method thereof, and the tunnel muck recycling system comprises a feeding mechanism, a material adding mechanism, a stirring mechanism, a detection mechanism and a conveying mechanism. The inlet end of the storage bin is configured to introduce muck generated during construction of the shield tunneling machine into the storage bin, the outlet end of the storage bin selectively communicates with the treatment bin, the adding mechanism selectively communicates with the treatment bin and is configured to add filler into the treatment bin to form slurry, the stirring output end of the stirring mechanism is arranged in the treatment bin, and the stirring output end of the stirring mechanism is connected with the storage bin. The detection mechanism is configured to detect whether the performance value of the slurry in the processing bin meets the design index or not, and the conveying mechanism can convey the slurry in the processing bin to the grouting end of the shield tunneling machine. Through the arrangement, the tunnel muck cyclic utilization system can achieve efficient and cyclic utilization of muck in shield construction, and environmental pollution and construction cost are reduced.

The present invention discloses a grouting reinforcement device and method for a pebble layer, and belongs to the technical field of grouting reinforcement. The grouting head structure comprises a grouting outer tube, the upper end and the lower end of the grouting outer tube are respectively provided with an upper end plate and a lower end plate, the middle part of the upper end plate is provided with a through hole, the middle part of the inner side surface of the lower end plate is provided with a connecting sleeve, a grouting inner tube is provided in the connecting sleeve, one end of the grouting inner tube is connected to the connecting sleeve, and the other end of the grouting inner tube is provided through the through hole of the upper end plate, a plurality of grouting holes are provided on one end of the grouting inner tube located inside the grouting outer tube, an upper annular groove and a lower annular groove are provided on the outer side surface of the lower end of the grouting outer tube, an installation spacing is provided between the upper annular groove and the lower annular groove, and an upper annular sealing airbag and a lower annular sealing airbag are respectively provided inside the upper annular groove and the lower annular groove. This technical solution is used to improve the grouting reinforcement effect of the pebble layer.

The invention relates to the technical field of coal mining, and discloses a mining-induced fissure stratum reconstructed water-resisting layer grouting target region optimization method, which comprises the following steps: drawing a rock stratum-fissure-slurry running height space relation comprehensive chart through overlying strata structure analysis, mining-induced fissure development characteristic analysis, working face / goaf slurry running height calculation and the like; and a working face overlying strata fissure zone tension area is determined, and then a vertical groutable rock stratum and a plane grouting range are preferably selected, so that final determination of a reconstructed water-resisting layer grouting target area is realized. According to the method, through accurate selection of the grouting target area, underground and ground grout leakage can be prevented while the grout diffusion radius can be increased, and the grouting effect and the quality of the reconstructed water-resisting layer are guaranteed.

The utility model discloses a fast grouting device for a tunnel advanced small guide pipe, which comprises two grouting cylinders and a plurality of mixers, wherein each grouting cylinder is a horizontally arranged cylinder body, and the left end and the right end of each grouting cylinder are closed; the left end and the right end of each grouting cylinder are axially connected with a first galvanized pipe respectively; the first galvanized pipe at the left end is used for being connected with a grouting pump; valves are arranged on the first galvanized pipes at the right ends; a plurality of grout guide pipes are arranged on the side wall of the upper portion of each grouting barrel at intervals in the length direction of the grouting barrel, and all the grout guide pipes perpendicularly communicate with the grouting barrels. The number of the mixers is the same as that of the slurry guide pipes on one grouting barrel, each mixer is provided with two slurry inlets and a slurry outlet, one slurry inlet corresponds to one grouting barrel and is connected with one slurry guide pipe on the grouting barrel, and one slurry outlet is connected with one advanced small guide pipe. By adopting the device, rapid grouting of a plurality of advanced small guide pipes is achieved, meanwhile, machining and dismounting are convenient, and reutilization can be achieved.

The invention provides a concrete grouting device for highway bridge construction, and relates to the technical field of highway bridge construction, the concrete grouting device comprises a base, a storage box, a stirring assembly, a cleaning assembly and a limit control assembly, the base is fixedly provided with the storage box, and the storage box is internally provided with a storage cavity; and a stirring assembly and a cleaning assembly are installed in the storage cavity, the stirring assembly is rotationally connected with the storage box, the stirring assembly is rotationally connected with the cleaning assembly, and the cleaning assembly is slidably connected with the storage box. Large particles or cakes contained in concrete are ground while stirring is conducted through a first rotating shaft and a sawtooth short rod in the stirring assembly, pipeline abrasion or blockage is prevented, concrete residues attached to the four walls of a storage box and the pipeline are cleaned through a scraping frame and an air cylinder in the cleaning assembly, the service life of the device is guaranteed, and the practicability is high. And through a spring trigger switch and a flow meter in the limiting control assembly, the flow of concrete is controlled, waste is reduced, and meanwhile the grouting effect is guaranteed.

According to the grouting method for advanced treatment of the high-pressure-bearing karst water disasters of the coal seam floor, the specific grouting process is set, normal-pressure grouting is adopted at the initial stage of grouting, only too grey water exists in cracks, and after grouting slurry is injected, due to the fact that the density of the slurry is larger than that of the too grey water in the cracks, the slurry can enter the cracks through self weight, and the grouting effect is achieved. The effect of replacing too grey water by the slurry is achieved; the pressurization grouting stage aims to block a small crack channel, under the action of pressure, grout is further diffused in the transverse direction and the longitudinal direction, the control range of drilling grouting is widened, and originally isolated cement is firmly connected into a whole; later-stage high-pressure grouting is used for consolidating the early-stage grouting effect, and due to the fact that the water head pressure of a corresponding area is high and generally ranges from 6 Mpa to 8 Mpa, the solidification anti-pressure capacity of pressurized grouting cement is 1t; in the later stage of the pressurized grouting stage, grouting needs to be conducted, the cement injection amount is adjusted, and the grouting pressure is increased; therefore, the effective protection layer thickness is increased, and the purpose of safe coal mining is achieved.

The present invention discloses a tunnel construction method and system combining deep hole sleeve valve tube grouting with horizontal rotary jet grouting, the system comprising: a deep hole sleeve valve tube grouting subsystem, which is arranged at the top surface formed by the ground surface above the arch of the tunnel section to be excavated, and comprises a first drilling device, a sleeve valve tube installation device and a first grouting device; a horizontal rotary jet grouting subsystem, which is arranged at the front end surface formed by the plane where the starting end of the tunnel section to be excavated is located, and comprises a second drilling device, a pipe roof installation device and a second grouting device; and a master control system, the master control system is remotely connected to the deep hole sleeve valve tube grouting subsystem and the horizontal rotary jet grouting subsystem through a communication network to control the first drilling device, the sleeve valve tube installation device, the first grouting device, the second drilling device, the pipe roof installation device and the second grouting device to complete their respective predetermined tasks within a predetermined time.

The utility model discloses a quick connecting device for an advanced small guide pipe and a grouting pipe, which is used for connecting the advanced small guide pipe and the grouting pipe and comprises a first connecting end, a connecting pipe, a second connecting end and a valve, the valve is arranged on the connecting pipe, and the first connecting end and the second connecting end are respectively arranged at the front end and the rear end of the connecting pipe. The first connecting end is connected with an advanced small guide pipe, and the second connecting end is connected with a grouting pipe. The first connecting end and the second connecting end each comprise a locking device and a sealing sleeve, the locking devices are arranged at the ends of the connecting pipe, and the sealing sleeves are arranged in the locking devices. Rapid connection of the advanced small guide pipe and the grouting pipe is achieved in an inserted connection and threaded connection mode, the connection position is effectively sealed, stability and effectiveness of pipeline connection are guaranteed, the pipeline butt joint efficiency is guaranteed, the sealing performance of the connection position is improved, and then the grouting pressure and the grouting effect are guaranteed.

This invention discloses an intelligent automated grouting method suitable for weak and fractured roof slabs in deeply buried highway tunnels, comprising the following steps: (1) During the excavation of the highway tunnel, a grouting main pipe system is deployed along the entire length of its sidewalls; (2) During the advancement of the tunnel face, hollow grouting anchor cables are installed in the weak and fractured roof slabs of the highway tunnel at a distance of 10-20m from the tunnel face, and the hollow grouting anchor cables are connected to the grouting main pipe for grouting; (3) During the advancement of the tunnel face, a monitoring and early warning instrument is quickly deployed in the weak and fractured roof slabs of the tunnel lagging behind the tunnel face; (4) When the grouting main pipe system receives an early warning signal, the weak and fractured roof slabs of the highway tunnel are automatically grouted. This invention can monitor the delamination amount of the weak and fractured roof slabs in real time, accurately grasp the grouting timing, ensure the grouting effect, significantly reduce the tedious and repetitive work of manual grouting, avoid incorrect judgment of the grouting timing, and improve the grouting efficiency of the weak and fractured roof slabs of highway tunnels.