43results about How to "Grouting pressure is small" patented technology

The invention discloses an efficient superfine cement based composite grouting material for grouting treatment of a water-rich sand layer, a preparation process and application. The efficient superfine cement based composite grouting material is prepared from the following components in parts by weight: 40 to 80 parts of portland cement clinker, 10 to 45 parts of coal ash, 5 to 30 parts of superfine slag micro powder, 2 to 6.5 parts of desulphurization gypsum, 1 to 10 parts of silica fume, 0.51 to 2.10 parts of first mixed composite modifier, 0.4 to 2.4 parts of second mixed composite modifierand 5.5 to 8.9 parts of third mixed composite modifier; the coal ash is prepared from the following components in parts by weight: 50 to 100 parts of high-calcium coal ash and 0 to 50 parts of low-calcium coal ash; the first mixed composite modifier is prepared from the following components in parts by weight: 96 to 99 parts of super plasticizer and 1 to 4 parts of hydroxypropyl methyl cellulose;the second mixed composite modifier is prepared from the following components in parts by weight: 20 to 32 parts of sodium hydroxide, 21 to 28 parts of sodium carbonate, 18 to 32 parts of sodium sulfate and 18 to 36 parts of sodium metaaluminate; the third mixed composite modifier is prepared from the following components in parts by weight: 12 to 25 parts of calcium chloride, 8 to 21 parts of lithium chloride, 10 to 23 parts of triethanolamine and 32 to 68 parts of sulphoaluminate cement clinker.

The invention discloses a novel grouting experiment device for fractured rock mass microorganism and an experiment method thereof. The experiment device comprises a grouting top cover, a grouting bottom cover, a grouting device and a waste liquid collecting device, RSM ultrasonic rebound detector receiving probes are respectively arranged between the grouting top cover and a corresponding fixed device and the grouting bottom cover and a corresponding fixed device, and a grouting cavity and an upper flow guiding hole are formed in the grouting top cover; a liquid inlet is formed in the side wall of the grouting top cover, a liquid receiving groove and a lower flow guiding hole are formed in the grouting bottom cover, and a liquid outlet communicated with the lower flow guiding hole and thewaste liquid collecting device is formed in the side wall of the grouting bottom cover. The experiment method comprises the steps of grouting liquid preparation, test piece installment, setting of titration speed and experiment result measuring after different parameters are changed. By adopting the experiment device and the experiment method, the purposes that the experiment result is improved, the experiment cost is reduced, and the device and method are suitable for popularization to conduct experiment study are achieved.

The invention relates to a high-speed railway roadbed uneven settlement reinforcement lifting and leveling method. The high-speed railway roadbed uneven settlement reinforcement lifting and leveling method comprises the following steps: S1, a reinforcement area is formed, specifically, the reinforcement area is formed in an embankment below a railway track through static pressure grouting; S2, curtain walls are formed, specifically, the curtain walls are formed on the positions, close to the slope toe, of the two sides of the embankment through static pressure grouting; and S3, lifting and leveling are conducted, specifically, an area between the reinforcement area and the curtain walls serves as an acting force pushing area, a static pressure grouting method is adopted, and by grouting the acting force pushing area, the upward grouting pressure is generated to evenly lift the embankment reinforcement area. The high-speed railway roadbed uneven settlement reinforcement lifting and leveling method has the advantages that a technology is simple, operability is high, interference is avoided, and the construction efficiency is high.

The invention discloses a grouting device and method suitable for a single-point displacement meter in tunnel engineering. The grouting device is composed of a fixed and sealed base, a grouting pipe,air and water discharging pipes and a sensor device; the sensor device is fixed to the center of the fixed and sealed base and is connected with a measuring rod provided with a protection pipe; a grouting channel and an air and water discharging channel are formed in the fixed and sealed base, wherein the grouting channel is provided with the grouting pipe, and the air and water discharging channel is provided with the air and water discharging pipes; the grouting pipe and the air and water discharging pipes both extend to the two sides of the fixed and sealed base; and the grouting finish time is determined through pulp returning of the air and water discharging pipes.

The invention discloses a novel method for preventing water inrush from the shaft wall in shaft aquifer sinking. A grouting pad (4) is constructed, and an operating platform (5) is mounted on the constructed grouting pad (4); a grouting hole (3), a water injection hole (2) and a water pumping hole (9) are obliquely, downwardly and outwardly drilled from the grouting pad (4) on the working platform(5), and the water pumping hole (9) is arranged at the upstream of a water flow field (10); water is injected into the water injection hole (2), water is pumped out of the water pumping hole (9), andgrout is then injected into the grouting hole (3). According to the invention, by water pumping and drainage, the water flow field and water pressure distribution of a to-be-grouted area are controlled, consequently, grout can be uniformly diffused into the grouted are, the phenomenon of grout runout is reduced, moreover, grouting pressure is moderately decreased, and furthermore, the grouting cost is reduced.

The invention discloses a carbonate rock area pulling-resistant anchor rod grouting and drainage device and a construction method of the carbonate rock area pulling-resistant anchor rod grouting and drainage device. The device comprises a steel pipe and an anti-floating anchor rod. The anti-floating anchor rod and the steel pipe are bound and fixed side by side and stretch into a grouting hole, and the section, stretching into the grouting hole, of the steel pipe is provided with sieve holes. The steel pipe with the sieve holes and the anti-floating anchor rod are bound, fixed and placed into the anchor rod grouting hole, and drainage and pressure relief are carried out through the sieve holes during grouting, so that grouting pressure is effectively reduced, the grouting difficulty is lowered, grouting is rapider, particularly, the secondary grouting effect is better, the problem that grouting of the anti-floating anchor rod is difficult due to the high water pressure of a carbonate rock area is effectively solved, and the carbonate rock area pulling-resistant anchor rod grouting and drainage device further has the advantages of being simple in structure, low in cost and convenient to operate.

A grouting forming method for ceramic blanks comprises the steps of grouting, slurry blanking, slurry mold injection preparation and slurry mold injection forming. According to the grouting forming method for the ceramic blanks, the liquid level in a grouting barrel is controlled through a first liquid level and a second liquid level, the relatively constant grouting pressure can be kept in grouting and is small, slurry is prevented from leaking from seams of a mold, the effect that the same height (a preset liquid level) is kept when the slurry enters the mold is guaranteed through a horizontal liquid level device before slurry mold injection, it is ensured that air in a pipeline is completely exhausted, and the thickness difference between the blanks is reduced.

The invention discloses a hollow anchor rod having functions of geological detection and anchoring and an exhaust and grouting method of the hollow anchor rod. The hollow anchor rod comprises an expansion-shell anchor head, an anchor rod, an expansion shell piece, an expansion shell, a steel plug, a grouting stop plug, a grouting pipe, a cushion plate, a nut and a plug head. The exhaust and grouting method comprises the ways that (1) the hollow anchor rod having the functions of geological detection and anchoring is downwards placed in an anchor hole formed by a drill when the hollow anchor rod is used for a side wall or a part with a downwards-inclining anchor hole, the bottom of the anchor hole is jacked up by the expansion-shell anchor head, and a process of performing grouting in the anchor rod and exhausting grout and gas at the anchor hole is employed; and (2) a process of performing grouting at the anchor hole by the grouting pipe and exhausting grout and gas through the expansion-shell anchor head is employed when the hollow anchor rod is used for an arc part or a part with a downwards-inclining anchor hole having a pitching angle larger than 30 degrees. The hollow anchor rod has high anchoring function, and the strength required by tension can be instantaneously achieved; moreover, the hollow anchor rod is convenient and safe to operate, and the construction safety risk is reduced; and the anchor head is flexible in expansion size, a forecast induction chip is convenient to install, and the forecast function of measuring geological disaster is achieved.

The invention discloses a flat hole grouting subgrade reinforcement method and structure without damaging the road surface. The steps are: A. determining the hole position of the grouting hole; B. drilling a horizontal or oblique grouting hole; The main direction is orthogonal; C, the grouting holes are drilled alternately; D, the inward grouting is drilled from the periphery of the roadbed lesion; E, the grouting flower tube is installed; F, the front end of the grouting holes arranged in a three-dimensional staggered way through the cross section of the roadbed Install the seamless grouting outer pipe; G. Inject cement slurry evenly, and the grouting pressure is determined by the test and the area; H. During the grouting process, observe the settlement, inclination, deformation and displacement of the subgrade pavement, structures and surrounding buildings. The grouting hole is formed by horizontal or oblique dry drilling of the subgrade slope in the diseased area, and the grouting flower pipe and the seamless grouting outer pipe are installed, and the grouting flower pipe and the seamless grouting outer pipe are connected by joints and screws. The method is easy to operate and the operation is simple and convenient. It does not damage the pavement structure, significantly improves the bearing capacity and stability of the subgrade structure in the diseased area, and the reinforcement effect is remarkable.

The invention provides an intelligent grouting hole device for a tunnel lining trolley. The device comprises a cross beam and stand columns, wherein the cross beam is horizontally arranged, and the stand columns are arranged at the two ends of the cross beam and are vertically connected with the cross beam; a grouting pipe is fixedly arranged on the cross beam, the upper part of the grouting pipeis open, and the lower part of the grouting pipe is closed; a slurry outlet is formed in the lower part of the grouting pipe, and a fixed lug plate is arranged on one of the two stand columns; a movable lug plate is hinged to the fixed lug plate through a first pin shaft, a spring and a hydraulic oil cylinder are arranged between the movable lug plate and the grouting pipe, and a baffle is arranged between the hydraulic oil cylinder and the grouting pipe; one end of the baffle is hinged to the end of a piston rod of the hydraulic oil cylinder through a second pin shaft, the other end of the baffle penetrates through the grouting pipe, and the piston rod of the hydraulic oil cylinder drives the baffle to move, so that the baffle blocks or does not block the slurry outlet; a cylinder body ofthe hydraulic oil cylinder is hinged to the movable lug plate through a third pin shaft, one end of the spring is hinged to the movable lug plate through a fourth pin shaft, and the other end of thespring is hinged to the cross beam through a fifth pin shaft.

The invention provides a method for preparing a geopolymer grouting material and a method for applying the geopolymer grouting material to static pressure grouting. Raw materials for preparing the geopolymer grouting material include steel slag, mineral slag, sodium silicate, silica fume, calcium bentonite, softened water and a composite alkali activator. The method for preparing the geopolymer grouting material comprises the steps that 1, a component A is prepared; 2, a component B is prepared; 3, a component C is prepared; and 4, the geopolymer grouting material is prepared. The method for static pressure grouting comprises the steps of 1, survey; 2, assessment; 3, pit sounding; 4, hollowing general survey; 5, deflection value check; 6, comprehensive evaluation; 7, measurement and hole arrangement; 8, drilling; 9, grouting; 10, check; 11, grouting hole sealing; and 12, recheck to complete static pressure grouting. The methods have the advantages of environmental friendliness, low viscosity, high elasticity modulus, high cohesiveness, low cost, high efficiency and high durability.

The invention discloses a roadbed underground grouting reinforcement device for road construction. The roadbed underground grouting reinforcement device comprises a workbench and an adjusting groove, wherein a feeding hopper is fixed on one side of the workbench; one side of a stirrer is connected with stirring blades; grouting grooves are formed in a grouting rod and a drill bit; and the adjusting groove close to a first hydraulic rod is formed in one side of the workbench. The roadbed underground grouting reinforcement device for road construction is provided with a sliding block and a rotating block, when the drilling angle needs to be adjusted, a third motor is started, the third motor drives a second rotating shaft to rotate, the second rotating shaft rotates to drive the first hydraulic rod to rotate, the first hydraulic rod rotates to drive the grouting rod to rotate in the adjusting groove, so that the orientation of the drill bit at one end of the grouting rod is changed, then a second motor is started, the second motor drives a threaded rod to rotate, the threaded rod rotates to drive the sliding block to move along a guide rod, the sliding block moves to enable the drill bit to gradually get close to the position needing to be drilled for positioning, and the orientation of the drill bit can be conveniently adjusted.

A grouting forming method for ceramic blanks comprises the steps of grouting, slurry blanking, slurry mold injection preparation and slurry mold injection forming. According to the grouting forming method for the ceramic blanks, the liquid level in a grouting barrel is controlled through a first liquid level and a second liquid level, the relatively constant grouting pressure can be kept in grouting and is small, slurry is prevented from leaking from seams of a mold, the effect that the same height (a preset liquid level) is kept when the slurry enters the mold is guaranteed through a horizontal liquid level device before slurry mold injection, it is ensured that air in a pipeline is completely exhausted, and the thickness difference between the blanks is reduced.

The invention discloses a shallow surface ecological water protection method based on the stagnation effect of key layers in mining space, utilizes the development and closure of hard rock layers (key layers) to separate layers and has a certain delay time, and according to the theory of key layers and the mechanical strength of rock layers, finds out-of-surface layers One or more key layers that are nearest and have a certain development delay time, drill holes in the key layer in advance, and set up a monitoring system in the hole; when the separation layer develops below the key layer, the monitoring system automatically recognizes and starts The grouting pump performs rapid grouting, and fills the separation space with grout before the key layer is broken and bent to block the upwardly conductive mining space, so as to prevent the mining from damaging the shallow rock formation and shallow surface water, and at the same time increase the The strength of the rock mass structure forms a "protective circle" for the shallow surface rock formation, prevents the loss of shallow surface water and surface subsidence, and protects the surface ecological water level, which is beneficial to the ecological protection of the ecologically fragile areas in the west.

The invention belongs to the technical field of civil engineering, and relates to a method for drilling and grouting construction in sand and gravel formations, comprising: (1) drilling and following pipes to drill into a wall casing; (2) running into a grouting pipe; 3) Install the orifice blocker; (4) According to the grouting procedure, adopt the appropriate water-cement ratio to start grouting and change the grout until the grouting is completed; (5) Grouting construction. The invention has the beneficial effects of solving the problem that the flower tube enters the gravel formation. The embedding depth is controllable, which is easier than the plugging method; it prevents the sand and gravel strata from collapsing during the process of pulling out the casing, which causes the flower tube to be blocked, and solves the problem that the sand and gravel stratum cannot be effectively grouted; simplifies the grout stopper It is difficult to install and operate; it has little effect on the grouting diffusion radius; it overcomes the process defects and the grouting quality is reliable; it is suitable for any sand and gravel stratum and can be implemented without process tests, especially in areas with complex strata.

The invention provides a construction method for an inter-wall grouting water-resisting and reinforcing well wall structure under protection of a freezing wall, and belongs to construction methods for inter-wall grouting water-resisting and reinforcing well wall structures. The construction method for the inter-wall grouting water-resisting and reinforcing well wall structure under protection of the freezing wall comprises the steps that the grouting opportunity under the protection of the freezing wall is selected actively; a grouting pipe is embedded between an inner wall and an outer wall while the inner well wall is constructed; after construction of the inner well wall is completed and before the freezing wall is melted, grouting is conducted between the inner well wall and the outer well wall from the ground under the protection of the freezing wall; and the space between the inner well wall and the outer well wall is blocked actively, so that the grouting protection effect is improved, the water sealing effect of the outer well wall is sufficiently improved, and the combined bearing effect of the inner well wall and the outer well wall is brought into play. The construction method for the inter-wall grouting water-resisting and reinforcing well wall structure under protection of the freezing wall has the advantages that the grouting pressure is low, and compact grouting is achieved; the airtightness of the outer well wall can be greatly improved after grouting, water pressure does not directly act on the inner well wall after the freezing wall is melted, and thus the stress condition of the inner well wall and the outer well wall is greatly improved; and construction is easy and convenient, the cost performance is high, the water sealing effect is remarkable, and the construction period is shortened.

The invention discloses a water turbine volute internal corner backfill grouting auxiliary structure and a backfill grouting method. The inner side of a seat ring is fully used as a construction space, arrangement of grouting pipelines is optimized, the arrangement work of the grouting pipelines is reduced, the grouting difficulty is reduced, and meanwhile the influence on other equipment pipelines, steel bars and concrete pouring construction is reduced. The structure comprises temporary supporting seats, inner side formworks and grouting pipes, the multiple temporary supporting seats and the multiple inner side formworks are arranged below a seat ring in a surrounding mode, and the inner side formworks are vertically arranged on the inner sides of the temporary supporting seats; the grouting pipe sequentially penetrates through the inner side formwork and the gap between the adjacent temporary supporting seats from the inner side of the seat ring and extends to the internal corner part of the volute. The method comprises the steps that the inner side formwork is installed on the inner side of the temporary supporting base; a hole is formed in the inner side formwork to install a grouting pipe; an exhaust pipe is upwards connected to the seat ring exhaust hole; backfill grouting is conducted on the volute internal corner part 6 through a grouting pipe; and cutting off the exposed parts of the grouting pipeline and the exhaust pipe.