Niagara FallsA
Catago50lacrim
SoletracySuppoPost grouting: after the shaft, tunnel, basement and other structures are dug, the grouting method is used to control water damage and strengthen the stratum,Niagara FallsGrouting pipe leading small conduit, which is called post grouting.
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.
Niagara Falls. It has good flexibility. The pipes can be coiled when they are produced, so that the number of joints in the pipe network can be reduced. It can be laid according to the terrain easily bypass obstacles, and is convenient for construction.
The multiple grouting pipes are fully combined with two as a detection profile, and the detection is completed for multiple profiles respectively.
.100 * 100 * 6mm grouting pipe made of q195b. 196kg per meter, 1076kg per piece. Results the average weight of 10 100 * 100 * 6mm grouting pipes was 1026kg, with a difference of 15kg per ton. It can be imagined how big the gap is when the one foot rate of retreat is large.
In fact, this 0.0246615 is the result of the Pi of 1415926 times the density of 85 and then divided by 1000. If you don't bother, the formula can also be written into the following form to calculate the weight per linear meter: weight per linear meter = (diameter - wall thickness) * 1415926 * wall thickness / 1000 * 8
Polymer chemical grouting method is applicable to reinforcement of sandy soil foundation, curtain grouting of dam foundation, water stop and leakage stoppage of underground engineering reinforcement of muddy interlayer of dam foundation and fault fracture zone. There are many varieties of polymer chemical pulp materials, including epoxy resin, acrylamide (propionate), polyurethane (cyanogen), lignin etc. Acrylamide and polyurethane are commonly used in chemical grouting of foundation. Acrylamide pulp is composed of main agent acrylamide and various admixtures. The viscosity of the slurry is close to water, and it has good groutability. After the slurry solidifies, the gel is impermeable, and has good durability and stability. This kind of slurry is widely used in seepage prevention grouting of fine rock cracks and medium fine sand layers and dynamic water leakage stoppage projects. This kind of pulp has certain toxicity and pollutes air and groundwater. The polyurethane slurry is mainly composed of polyisocyanate and polyether resin, and then mixed with various admixtures. After the slurry is poured into the formation,Niagara FallsGrouting pipe, which can strengthen the foundation and prevent seepage and leakage. Polyurethane slurry can be divided into water-soluble and non-water-soluble. The water-soluble polyurethane can be miscible with water and react with water to form an aqueous gel; Water insoluble polyurethane can only be miscible with organic solvents. Polyurethane slurry has low viscosity, high stone strength, safety and reliability, no pollution to the environment, simple operation and high economic benefits.
The multiple grouting pipes are fully combined with two as a detection profile, and the detection is completed for multiple profiles respectively.
Answer: it varies according to the model and elasticity of the grouting pipe, and its internal pressure can reach 150bar or more.
[0021] in one embodiment, as shown in Fig. 1 the flange I is used for the installation and connection of the utility model and the underground grouting pipe. The fast cutting device of the utility model rotates the bolt by using the fastening force acting on the bolt, and the fixed cutting device 2 can be moved up and down through the screws on the bolt. There are screw patterns on the outer surface of the cutting rotary device 5 and on the upper end of the tension blade device The tension blade nut 4 can be directly screwed to one end of the tension blade device A cutting blade 6 and a pulley 7 are fixed to the lower end of the cutting rotary device 5, and the outer diameter of the cutting rotary device 5 is smaller than the inner diameter 2_ of the sleeve. The specification of the utility model can be made into a series of products according to different specifications of the grouting pipe.
Quality improvement.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.
Water pressure test water pressure test is to use the grouting pump to inject clean water into the grouting section. Its main purposes are: check the grouting stop effect of the grouting stop pipe head, especially the grouting stop plug.
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.