Kawasa LakeLeading small conduit42Measures to reduce energy release

Application of full section grout discharge grouting pipe in construction sequence the full section grout discharge grouting pipe is a embedded grouting pipe system, which is used for permanent sealing of construction joints, cold joints pipe leakage, gaps between ground walls, etc. in concrete. In the treatment of construction joints, leakage remedial measures are mainly reserved. When leakage occurs, which can seal the construction joint. The outer diameter of the grouting pipe is 12mm; Inner diameter 8mm; Pressure at 30% deformation > 7MPa; Weighing about 71t / M; Operating temperature < 70 ℃.

The advantages of the grouting pipe are as follows: The embedded grouting pipe can be injected with water by on-site pressure to confirm the water tightness of the joint. Grouting is required only when the joint leaks water.

Kawasa Lake.The grouting pipe diffuses the load on it. When the reinforced soil is loaded, the grouting pipe has a high bond with the soil, and has a mutual embedding effect with the soil, showing better tensile performance. The tensile stress of the soil is transmitted to the grouting pipe, making the reinforced soil a tensile member, which can change the stress from the vertical direction to the horizontal direction, spread the load stress evenly to a large base range, enhance the overall tensile strength of the soil, and effectively improve the stress distribution of the pavement structure. The strength of high tensile reinforced soil is far higher than that of unreinforced soil, greatly improving the bearing capacity of the soil.

[invention content] [0003] in view of the shortcomings of the prior art, the utility model provides a fast cutting device in the hole of the underground grouting pipe in order to solve the problems of the prior art, which can reduce the operating intensity of workers by using the lead screw principle, reduce the quantities of clearing the roadway floor by using the rotary cutting in the casing, and adjust the cutting depth at will according to the actual situation of the roadway.

.Application of full section grout discharge grouting pipe in construction sequence the full section grout discharge grouting pipe is a embedded grouting pipe system which is used for permanent sealing of construction joints, pipe leakage, gaps between ground walls, etc. in concrete. In the treatment of construction joints leakage remedial measures are mainly reserved. When leakage occurs, grouting is used to make up the leakage. The grouting material can be filled with hydrophilic epoxy resin slurry, which can seal the construction joint. The outer diameter of the grouting pipe is 12mm; Inner diameter 8mm; Pressure at 30% deformation > 7MPa; Weighing about 71t / M; Operating temperature < 70 ℃.

Determine the specific requirements of grouting test and test the test effect.

The so-called direct grouting method refers to the method of directly placing the grouting pipe into the soil by vibrating or drilling. According to the different forms of grouting pipes, the direct grouting method can be divided into the grouting pipe grouting method, the flower pipe grouting method, the drill pipe grouting method, and the stop plug grouting method.Grouting pipe grouting method refers to the method of grouting directly through the nozzle at the lower part of the grouting pipe; The flower tube grouting method is a method of grouting through a grouting tube (flower tube) with multiple grouting holes on the side wall; The drill pipe grouting method refers to the method of grouting directly through the drill pipe for drilling.

Grouting pipe is a kind of embedded grouting pipe system, which is used for permanent sealing of construction joints,Kawasa LakeGrouting pipe, cold joints,Kawasa LakeAdvance small conduit tunnel, 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, it 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 permanently sealed in this way.

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,Kawasa LakeAdvance support small conduit, 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. Other uses of grouting pipe introduction the grouting pipe of pile foundation refers to the steel pipe that needs to be embedded when testing the quality of pile foundation. Generally, it is bound in the reinforcement cage and lowered into the hole together with the reinforcement cage before pouring concrete! There are many reasons for the grouting pipe to gamble on the pipe, most of which are due to the leakage of slurry caused by the pipe joint not being welded well during processing, and also due to the pipe mouth not being closed well and falling debris, the pipe is blocked! To put it bluntly, the pipe is blocked by sundries! The role of the grouting pipe is to inject clean water into the grouting pipe and put the transducer into the grouting pipe for testing when the integrity of the pile foundation is tested by ultrasonic wave. If the grouting pipe is blocked, the transducer can not be put in, or can not be placed at the bottom of the pile, so it is impossible to comprehensively test the whole pile and judge the quality of the pile foundation!

[patent attachment] [description] [0010] 1 is the structural diagram of the utility model; [0011] 2 is a schematic diagram of the cutting blade; [0012] 3 is the schematic diagram of tightening the blade nut; [0013] 4 is a schematic diagram of the fixed cutting device.

index. The fast cutting device in the hole of the underground grouting pipe according to claim 2, wherein the cutting rotating device rotates the cutting blade and pulley through a socket wrench to cut the casing wall, and the cutting rotating device is a wrench or a tooth wrench.

On site inspection of grouting pipe: Before on-site inspection, measure the delay time from the sound wave monitor to the receiving system. And calculates a sound time correction value.

Squeeze grouting or split grouting: depending on the grouting pressure, the grout is forced to open various channels in the underground layer to squeeze into the stratum. The grout is mostly consolidated in a vein or a tree shape. This grout can squeeze the soft bottom layer tightly, so it is also called compaction grouting in foundation reinforcement. Displacement grouting: the soil and sand in the injected stratum are forced out through certain methods, and the space formed is filled with grout, It is called displacement grouting High pressure mass injection grouting: the kinetic energy of jet flow is used for grouting.

When the a diameter of grouting connecting reinforcement is less than or equal to 16, the a diameter of connecting reinforcement is greater than

Scheme customization.2：. High pressure jet grouting: the slurry is transported by a high-pressure pump, and generates a jet flow with huge kinetic energy through a special nozzle. It cuts the bottom layer, mixes with gravel and sand particles, and coagulates. This is called high-pressure jet grouting.

Causes of wrinkling: the blanking specification of pipe joint is too long.

Classified according to the movement mode of grout in the stratum Filling grouting: filling large cracks and caves with grout is called filling grouting.

Kawasa Lake. 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 is wrapped with a layer of non-woven filter cloth. The outermost layer is wrapped with nylon mesh