58results about How to "Avoid pulping" patented technology

The invention belongs to the technical field of construction and particularly relates to a fastening type cylindrical timber formwork concrete casting construction method. The method comprises the following steps: (1) binding a pillar main bar; (2) positioning; (3) manufacturing a template; (4) mounting the template; (5) cutting the template at the crossed part of a beam column; (6) reinforcing the template; (7) integrally fixing a template system; (8) performing concrete casting; (9) stripping of the formwork. According to the invention, the timber formwork is light in weight; as birch and poplar are adopted as the raw materials, the strength is high and the toughness is good; a template of 3 m in height is generally 40-45 Kg, so that two persons can work together to complete the mounting; compared with the traditional steel form construction, 70% construction period is shortened; as the shaped cylindrical template is adopted and the connector of the template adopts a unique convex through groove design, the abutted seams are closely combined, paste void and leakage are prevented, and concrete demoulding is quick and attractive; the difficult problem that the steel form can not be cut at will is solved, arbitrary cutting can be realized according to actual size, and accordingly, the construction difficulty is lowered for the construction side.

The invention discloses a method for grouting and sealing a plate-type ballastless track. The method comprises the following steps: 1) cleaning the top surface of a base plate; 2) laying a rubber hose which is laid along the length direction of a track plate on the top surface of the base plate with the width larger than that of the track plate part; and 3) laying an industrial felt and a permeable cloth. The method has the advantages that the sewing body of the industrial felt and the permeable cloth is pressed on the top surface of the base plate and the lateral surface of the track plate by unequal angle steel, while the elastic deformable rubber hose is arranged between the sewing body of the industrial felt and the permeable cloth and the top surface of the base plate, grouted mortar is sealed on the premise of ensuring the permeability, the phenomenon of grout off is prevented, and the grouting quality and the construction efficiency can be effectively improved.

The invention belongs to the technical field of hydraulic and hydro-power engineering, and discloses a rock-fill dam deformation control technology which can be applied to diseased rock-fill dams or rockfill deformation control in the hydraulic and hydro-power engineering. The rock-fill dam deformation control technology comprises the following steps of: 1, preparing a pasty stable grouting liquid and cement mortar; 2, drilling holes in the dam body of the rock-fill dam, wherein the holes comprise stable grouting liquid grouting holes for sealing, and filling grouting holes; and 3, grouting: injecting the pasty stable grouting liquid into two rows of holes around a filling grouting area to make the pasty stable grouting liquid and a concrete panel on the upstream side of the rock-fill dam form an enclosed area, injecting the cement mortar into holes in the grouting area in an orifice filling mode after the pasty stable grouting liquid has been injected for 14 days, and controlling the rock-fill dam deformation after the grouting area has been grouted for 28 days. By the rock-fill dam deformation control technology, the deformation resistance of the rock-fill dam can be improved, the deformation of the dam body can be controlled, the grouting quality can be guaranteed, and the rock-fill dam deformation control technology has the advantages of short construction period, high work efficiency and the like.

The invention discloses a construction method for plugging a construction joint of a frame beam. The construction method comprises the following steps: mounting a u-shaped frame beam formwork at the construction joint; mounting positioning baffle blocks at upper and lower parts of the inner sides of the front ends of two vertical plates of the frame beam formwork respectively; mounting a plurality of longitudinal through beam steel bars inside the frame beam formwork; through occlusion of grooves for plugging steel frameworks and lug bosses for connecting steel frameworks and end steel frameworks, forming a combined framework, wherein the combined framework and the frame beam formwork are equal in height; adjusting the combined framework so as to tightly press the combined framework against the positioning baffle blocks. A frame beam concrete structure built with the construction method is compact inside and smooth outside, and slag inclusion, a pitted surface and grout runout of concrete are avoided; meanwhile, the jointing quality of concrete poured in the first time and concrete poured in the second time is good, the steel frameworks are overturned for many times and are conveniently mounted and dismounted, and the construction method has the characteristics of environment friendliness, energy conservation, economy and practicality.

The invention relates to a method for preventing and controlling water burst of a coal mining base board rock stratum, in particular to a method for preventing and controlling water burst of a coal mining base board rack stratum on a pressure bearing water body. The method comprises the following steps that firstly, a coalface is detected; secondly, drill sites are exploited at the two sides of a lead conveying smooth groove and the two sides of a air returning smooth groove respectively so as to perform drilling according to a detected result in the first step; thirdly, slurry filling casing pipes are arranged at drilling openings of lower three belts of the coal layer base board, and a freezing casing pipe is arranged at the bottommost layer section; fourthly, after drilling is finished, slurry is filled into drill holes, the slurry is sequentially filled, starting from the bottom end and going upwards layer by layer, before the slurry is filled into the bottommost layer and in the slurry filling process, liquid nitrogen is used for performing quick-freezing treatment. According to the method for preventing and controlling water burst of the coal mining base board rack stratum on the pressure bearing water body, the principle that the procedures of detection, slurry filling, freezing and digging are sequentially performed is utilized, slurry filling and freezing are respectively performed on the lower three belts sequentially from bottom to top layer by layer, and therefore water disasters in the excavating process of a deep coal layer base board of a complex geological structure can be effectively prevented from happening.

The invention is mainly applied to the technical field of building construction and particularly relates to a building deformation joint concrete double-wall synchronous pouring construction method. The method mainly comprises the following steps that firstly, a deformation joint main steel formwork and a deformation joint auxiliary steel formwork are manufactured; secondly, the deformation joint auxiliary steel formwork is hoisted and installed; thirdly, the deformation joint main steel formwork is hoisted and installed; fourthly, the deformation joint main steel formwork and the deformation joint auxiliary steel formwork are corrected and installed; fifthly, full-thread split bolts penetrate in sequence along the deformation joint main steel formwork and the deformation joint auxiliary steel formwork; sixthly, on the sides, to be poured, of deformation joint double walls, PVC bolt casing pipes are arranged on the full-thread split bolts in a sleeving mode; seventhly, deformation joint double-wall steel bars are bound; eighthly, the deformation joint main steel formwork and the deformation joint auxiliary steel formwork are fastened; ninthly, the double walls are poured; tenthly, the deformation joint main steel formwork and the deformation joint auxiliary steel formwork are demounted. The building deformation joint concrete double-wall synchronous pouring construction method is easy and convenient to implement and efficient; materials are saved, multiple times of using can be achieved through one-time processing, and formworks and resources are saved; the quality is high, the steel formworks are used for replacing original wood formworks, extruded joint mortar is avoided, and environment protection is promoted.

The invention provides a ground surface uplifting control method based on induced splitting and collapsing drilled holes. Aiming at advanced pre-grouting reinforcement of a transverse channel passingthrough a sand layer in subway engineering, the purposes of controlling the slurry direction and lowering ground surface uplift are achieved by distributing collapsing-induced-splitting drilled holesand the collapsing drilled holes. Through the induced-splitting drilled holes, the formation stress of a target reinforcement area is lowered, the slurry direction is controlled, and slurry runout ofthe ground surface is prevented; through the collapsing drilled holes, a formation uplift buffering area is created, and ground surface uplift is lowered; and the induced-splitting drilled holes and the collapsing drilled holes are matched with a pipe shed, thus the grouting effect can be ensured, and meanwhile, ground surface uplift can be effectively controlled.

The invention discloses a method for controlling water-rich fractured rock mass comprehensive grouting under the effective sealing batholite shortage condition. The method includes the steps of comprehensively detecting a hazard-formation water source and a water guide channel, designing a sealing batholite refitting scheme and a grouting treatment scheme, refitting sealing batholite, controlling the grouting process and the safety, conducting draining, pressure relieving, drilling and blocking, comprehensively detecting the grouting effect, compensating a weak zone for slip casting and the like. After construction is conducted through the method, by refitting the sealing batholite, the problems that due to the shortage of the effective sealing batholite, sap loss and grout leakage occur in the grouting process and the grouting effect is not good are solved, the grouting efficiency is improved, and good social benefits and economic benefits are created.

The invention provides shrinkage compensating type high-performance mortar for grooving method closure grouting. The shrinkage compensating type high-performance mortar is characterized by being formed by compounding polymer gelatine powder, silica powder, a superfine micro-powder expanding agent, a high-performance water reducing agent, aggregate and a binding material through the processes of powder drying, dispersion machine pre-dispersion, fiber pre-mixing and vacuum sealing; the mortar is prepared from, by mass, 1.5-3% of polymer gelatine powder, 0.8-1.2% of silica powder, 1.25-2.5% of superfine micro-powder expanding agent, 0.10-0.14% of high-performance water reducing agent, 69-75% of aggregate and 12.5% of binding material (containing cement). The mortar has the advantages of good micro-expansibility, water retaining performance, waterproofness, easy binding and the like, and is suitable for grooving method chemical grouting construction on cracks and expansion joints, the surface of a dug dovetail-shaped groove is effectively closed, grout leakage and runout can be avoided, and grouting quality is improved.

The invention relates to the technical field of production of prefabricated composite flooring, in particular to a quick-splicing combination prefabricated composite floor formwork, comprising a sideform component, first corner forms, second corner forms and plug components. The side form component includes side forms having different lengths; side form connection plates are arranged at the two ends of each side form; when two side forms are connected perpendicularly, the two side forms are connected via the first corner forms or the second corner forms; one side of each second corner form isprovided with second corner form connection plates perpendicular to each other and connected with the side form connection plates, and the other side of each second corner form is provided with second corner form retainers perpendicular to each other; each side form retainer at the front of each side form is provided with side form notches; each plug component includes an insert plug and an orifice block. In use, the side form notches that are not needed are inserted into the insert plugs, rebars extended out of the side form notches are inserted into the orifice blocks; the lower end of eachinsert plug is provided with a plug; the lower end of each orifice block is provided with an opening. The quick-splicing combination prefabricated composite floor formwork can be accurately combinedinto a required shape according to actual needs, is flexible and convenient to use and is reusable so that production nicest is effectively reduced.

The invention provides an electric pole which comprises an electric pole main body. A plurality of longitudinal reinforcing bars and a plurality of force loading rings which are in surrounding connection onto the longitudinal reinforcing bars in a ring shape are arranged in the electric pole main body. Both the top part and the tail part of the electric pole main body are provided with steel rings. The phenomenon of slurry overflow at both ends of the electric pole can be avoided. Both ends of the electric pole are difficult to damage. The electric pole has high head quality, high qualification rate and low scrappage.

The invention relates to a well, in particular to a prefabricate building block used for assembling a wall of the well. The prefabricate building block used for assembling the wall of the well is an arc-shaped building block (1) which comprises an arc-shaped inner cylinder wall (2), an arc-shaped outer cylinder wall (3) and a reinforcing connection rib (4), wherein the arc-shaped inner cylinder wall (2) and the arc-shaped outer cylinder wall (3) are arranged in a coaxial mode, and preformed holes (5) are formed in the left side of the reinforcing connection rib (4) and in the right side of the reinforcing connection rib (4). Upper water stopping grooves (8) are formed in the upper surface (1-1) of the arc-shaped building block (1) and lower water stopping grooves (9) are formed in the lower surface (1-2) of the arc-shaped building block (1). One upper water stopping groove (8) in the upper surface (1-1-1) of the arc-shaped inner cylinder wall is matched with one lower water stopping groove (9) in the lower surface (1-2-1) of the arc-shaped inner cylinder wall. One upper water stopping groove (8) in the upper surface (1-1-2) of the arc-shaped outer cylinder wall is matched with one lower water stopping groove (9) in the lower surface (1-2-2) of the arc-shaped outer cylinder wall. The prefabricate building block used for assembling the wall of the well has the advantages of being reasonable and simple in structure, high in strength, and capable of solving the essential problem of thick liquid leakage in a process of manufacturing the wall of the well.