Jersey Tunnel small conduitUnderstand the market

[0024] it should be noted that the above specific embodiments are only exemplary. Under the above teachings of the utility model, those skilled in the art can make various improvements and modifications on the basis of the above embodiments, and these improvements or modifications fall within the protection scope of the utility model. Those skilled in the art should understand that the above specific description is only for the purpose of explaining the utility model, and is not intended to limit the utility model. The scope of protection of the utility model is defined by the claims and their equivalents.

When reinforcing collapsible loess, sodium silicate solution with 5% sodium chloride and concentration of 10% ~ 15% is used. After the solution is pressed into the soil layer, sodium ions will react with calcium ions in water-soluble salts of the soil to form silicic acid gel between soil particles and on their surfaces, increase the cementation between soil particles, and harden the soil. The ultimate compressive strength can reach 0.2 ~ 0.8MPa. When strengthening the silty fine sand,Jersey Advance support of small conduit, and its ultimate compressive strength can reach 0.4-0.6mpa.

Jersey .When the pipe cannot be connected due to serious blockage, the following treatment principles must be followed: when it is the first pile of a certain bridge, core drilling detection must be carried out; when it is not the first pile of a certain bridge, the construction unit shall apply for changing the detection method The low strain reflection wave method or high strain strain strain measurement method shall be used and signed by the supervisor's representative and the person in charge of quality supervision before implementation; In case of pipe blockage of a bridge for many times, core drilling inspection shall be carried out in due time. Common problems and answers of grouting pipe what is the pressure inside the grouting pipe?

Non woven filter cloth layer outside the framework. Only water and grout are allowed to pass through, and other materials such as cement slurry in concrete are blocked outside the grouting pipe to ensure smooth use of the whole section of the grouting pipe.

. When reinforcing collapsible loess, sodium silicate solution with 5% sodium chloride and concentration of 10% ~ 15% is used. After the solution is pressed into the soil layer sodium ions will react with calcium ions in water-soluble salts of the soil to form silicic acid gel between soil particles and on their surfaces, increase the cementation between soil particles, and harden the soil. The ultimate compressive strength can reach 0.2 ~ 0.8MPa. When strengthening the silty fine sand, a certain amount of phosphoric acid (density 0 is added to the sodium silicate solution (density 18-2 with a low concentration. The solution is chemically reacted in the soil to harden the soil, and its ultimate compressive strength can reach 0.4-0.6mpa.

If there is no leakage, grouting can be avoided; Common specifications ccll-y series grouting pipe: grouting once, non reusable ccll-d series grouting pipe: multiple grouting, grouting is not limited by time.It is applicable to waterproof joints of subway, tunnel and basement. If there is water leakage, grout can be injected into the pipe body to fill and seal. If there is no leakage, grouting can be omitted. Grouting pipe is a kind of embedded grouting pipe system, which is used for permanent sealing of construction joints, cold joints, pipe seepage joints and gaps between ground walls in concrete. It is very suitable to install grouting pipes between the joints of new and old concrete. When water penetrates into the joint, the joint can be sealed by injecting slurry into the PVC port set on the surface. The proper grouting time can be selected after the concrete curing. Leakage joints can also be made into durable seals by this method.

The grouting pipe of the spring reinforcement framework shall be bound with the bamboo frame of the reinforcement framework according to the construction rigidity of the component. After being bound into a bundle, it shall be stacked at the specified position and lifted to the abutment cross. During the reinforcement binding process, the quality and wall shall be strictly controlled according to the ship support, and the finished product shall be well protected. The injection pipe shall be placed on the top, and the embedded grouting symbol shall be buried on the formwork for positioning. The inverted formwork shall be used to install stairs and component side formworks to increase the turnover rate of the formwork as much as possible. According to the design size, the formwork shall be cut with plate shears, edge folding machines, profile training machines, etc. the blanking standards shall be used for rebar concealment and cross slab. The unqualified ones shall be rectified until they meet the construction technology. Concrete pouring Before concrete mixing, the moisture content of sand and stone shall be measured and the construction mix proportion shall be adjusted according to the test results.

[Patent Description] fast cutting device in the hole of underground grouting pipe [technical field] [0001] the utility model relates to a device for cutting grouting pipe in a coal mine, in particular to a fast cutting device in the hole of underground grouting pipe.

2 performance of grouting pipe the grouting pipe is light in weight, has strong bite force with soil or gravel, is acid-base resistant, corrosion-resistant, aging resistant and easy to construct. It has high tensile strength (5-10 times higher than that before stretching) and low elongation (only 10% - 15% of that before stretching). It is easy to cut and connect on site (polyethylene rope or connecting rod can be used for connection), and it can also be overlapped (the grouting pipe with overlapping buckle has been developed and can be connected without other materials), and the bending effect during construction is small. However the grouting pipe has low hardness, poor mechanical damage resistance, and mechanical scars such as scratches and crushed stones will produce stress concentration, which will reduce the overall mechanical properties of the grouting pipe and the grouting pipe.

3 cement water glass (sodium silicate) slurry cement water glass slurry is a grouting material composed of cement and water glass as the main agents, which are injected in a double liquid manner according to a certain proportion, and accelerator or retarder is added when necessary.

Discount.[specific embodiment] [0015] the following describes the utility model in combination with the attached specific embodiments.

Four advantages of establishing a good cooperative relationship with customers: Professional production equipment and testing facilities ensure the quality of the supplied grouting pipes.

Construction Engineering Investigate the characteristics of surrounding rock, clarify the purpose of grouting, and determine the grouting range of surrounding rock.

The distance between measurement points is 40cm and when abnormalities are found, it is encrypted to 20cm.

Installation conditions. The inner core of the grouting pipe is rigid, which can ensure that it will not be crushed under the concrete pressure. The non-woven filter cloth layer outside the framework only allows water and grouting fluid to pass through, and other materials such as cement slurry in concrete are blocked outside the grouting pipe to fully ensure the smooth use of the whole section of the grouting pipe.

Low cost, no loss, free from climate and place constraints.

It is required to ensure that at least one embedded reinforcement is firmly welded with the anchor ring of maolehan grouting pipe within every meter along the joint direction. The quality of XF type grouting pipe should be carefully checked. If deformation or inconsistent spacing between two steel beams is found, it should be repaired. If necessary, the steel beam spacing of maolehan grouting pipe shall also be adjusted according to the ambient temperature during installation. XF type grouting pipe device shall be slowly put into the groove, so that the center line of the joint coincides with the center line of the actual reserved joint, and the deviation shall not exceed 10mm. Meanwhile, the inner edge of the steel side beam shall be kept vertical. After the XF grouting pipe is in place, the top surface of the steel beam of the grouting pipe shall be adjusted according to the longitudinal, transverse slope and elevation to be 1-2mm lower than the adjacent asphalt concrete pavement and shall not exceed the pavement elevation.

Jersey . Verify the water permeability of the rock stratum according to the measured water absorption of the borehole to determine the grouting pressure and flow, and determine the grouting slurry and its initial concentration.

The setting and curing reaction of cement water glass slurry includes cement hydration reaction and the reaction of Ca (OH) 2, the product of cement hydration reaction, with water glass, that is, after cement and water are mixed into cement slurry, Ca (OH) 2 with strong activity is produced due to hydrolysis and hydration; Water glass interacts with Ca (OH) 2 to form a gel with certain strength - calcium silicate hydrate. The reaction is as follows [2].

[0022] when the utility model is in use, the flange plate is used to fix the utility model and the flange plate of the underground grouting pipe, the bolt is rotated with a tool, the cutting blade is adjusted to a certain position by the screw on the bolt, and then fixed, and then the screw cap of the blade is rotated and tightened to make the cutting blade and the pulley contact the inner surface of the grouting pipe with a certain contact force,Jersey 42 small catheter, thereby rotating the casing. The pulley is located on the other side of the rotating device and the pulley and the blade are driven to rotate by the rotation of the bolt and the cutting rotating device is fastened and rotated by a wrench or a tooth wrench, and fix the position of the blade in the casing, so as to prevent the blade on one side from shifting during cutting, failing to achieve the cutting purpose, or even damaging the blade. The fastening bolt is rotated by a wrench or tooth wrench, so as to drive the pulley and blade to rotate. The cutting rotating device cuts the casing. When the casing is cut to a certain depth, the blade nut is tightened again and the cutting continues until the casing wall is cut through. It has the characteristics of 4-5 times higher work efficiency than manual cutting and lower labor intensity of workers.