Saline soil area combined drain system and combined water drain forced ramming foundation treating method thereof
A drainage system and foundation treatment technology, applied in soil protection, infrastructure engineering, construction, etc., can solve the problems of poor saline soil treatment effect, long construction period, and insignificant foundation bearing capacity, and shorten the construction period of foundation treatment. , The effect of improving the bearing capacity and modulus of the foundation and saving the cost of foundation treatment
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[0062] Example 1 As shown in Figure 9, this kind of combined drainage system for saline soil area is characterized in that: a plastic drainage belt 1 arranged longitudinally in the foundation soil and a gravel drainage pile 2 distributed in between are combined into one drainage system. Channel, the upper end of the drainage channel in a local area merges into a ram pit 5, a drainage pump 9 is arranged in the ram pit, and the drainage pump 9 is connected with a drainage pipe 10.
[0063] Before construction, it is necessary to complete the following design and determine the basic design parameters for this method of foundation treatment in saline soil areas with combined drainage and dynamic compaction:
[0064] 1. Select the model of the plastic drainage belt, and determine the length, arrangement and spacing of the plastic drainage belt.
[0065] 2. Determine the pile diameter, pile length, pile distance and pile material of the drainage pile.
[0066] 3. Determine construction ...
Example Embodiment
[0076] The second embodiment is shown in FIG. 1116. The difference from the first embodiment is that the construction sequence of the combined drainage system in step 1 is that the sand and gravel drainage pile 2 is constructed first and the plastic drainage belt 1 is constructed.
[0077] Refer to Figure 17-23 for the construction steps of the above sand-gravel drainage pile:
[0078] Refer to Figure 17 for step a, the pile machine is in place and the pile pipe 7 is prepared. The pile pipe is a variable-diameter pile pipe, which is selected according to the design feeding amount of each gravel drainage pile. The pile hole formed by the variable diameter pile pipe is larger than the designed pile diameter.
[0079] Step b, referring to Figure 18, start the pile machine to make the pile pipe 7 sink vertically at the set position.
[0080] Step c see Figure 19, the pile pipe sinks to the design depth.
[0081] Step d, referring to Fig. 20, put the coarse particle material 8 into the...
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