Mud-water balance pipe jacking machine technology has developed in a diversified direction

2024-07-22 15:59:19

Four steps to correctly use the Rectangular Pipe Jacking Machine.

1. Excavation of the working pit of the mud-water balance Pipe Jacking Machine: 3.4 meters long, 2.2-2.5 meters wide and deep: 1. It is determined by the user whether there is a pipe network underground, etc. It is generally recommended to be in the original soil layer. 2. It depends on the thickness of the pipe diameter to be jacked. Generally, the larger the diameter, the deeper it is. The diameter of about Φ400mm can be about 2 meters to 2.5 meters below the ground.

2. After lowering the main machine into the working pit, align it 1. First determine the position of the front and rear baffles, and rotate the adjustment screw to have a slight tightening force. 2. Find the level, align it with a level ruler at the upper end of the jacking rod, and it is best when the bubble is in the middle of the ruler. 3. Determine the pre-jacking route, first set up a benchmark at the ideal predetermined position on the opposite side, and use a plumb line to visually check that the jacking rod and the benchmark are in a straight line. 4. Repeat the above work to check whether the direction of the machine is correct. If there is no difference, tighten the screw to hold the baffle.

3. After the above work is correct, start the hydraulic station and start the operation. The first four jacks should be measured frequently for their jacking direction. If there is any abnormality, it should be corrected.

4. After the drill rod of the Pipe Jacking machine reaches the outlet, the jacking head can be removed, the pull head (conical body) can be replaced, and the pipeline to be laid and the pull head can be fixed firmly, and the pipeline can be pulled back into the hole.

With the popularization and specialization of pipe jacking construction, the theory of pipe jacking machine construction has been improved day by day. From the current development trend, the pipe jacking machine designed with earth pressure balance theory is becoming more and more widely used, because the earth pressure balance pipe jacking machine has a wide range of applications and is suitable for almost all soil types. The soil residue discharged during construction is easier to handle than the mud discharged by the mud-water balance tunneling machine, and its equipment is relatively simple. At present, pipe jacking technology has developed in the direction of diversification, and new technologies such as long-distance pipe jacking, micro pipe jacking, and curved pipe jacking are changing with each passing day. The long-distance and large-diameter pipe jacking technology has evolved from 20 to 30 meters in the past to several thousand meters in a row now, and the maximum diameter of the pipe jacking has reached 5 meters; the micro-pipe jacking technology has been widely used in cables, water supply, gas, etc., and the diameter of the small entry pipe is only 75mm; the curved pipe jacking technology has developed from single curves to compound curves, from horizontal curves to vertical curves and even complex curves, and the curvature radius of the curve is getting smaller and smaller, all of which have added new difficulties to the pipe jacking construction.