Drilling and grouting integrated top-down high-pressure impact extrusion grouting method
A top-down drilling irrigation technology, applied in soil protection, construction, infrastructure engineering, etc., can solve problems such as splitting, unstable drilling hole walls, and prominent problems of ineffective irrigation, and achieves a simple process operation Effect
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[0042] A method that adopts the above-mentioned integrated drilling and irrigation, top-down, high-pressure flushing grouting, such as figure 1 As shown, the specific steps are:
[0043] (1) According to the stratum conditions and engineering design requirements, determine the drilling and irrigation holes and row spacing through field tests.
[0044](2) The equipment and layout of drilling and grouting integration, top-down, high-pressure punching and extrusion grouting are shown in the appendix figure 2 : Schematic diagram of drilling and grouting integration, top-down, high-pressure extrusion grouting.
[0045] (3) Drilling and grouting construction should use a power head drilling rig or an ordinary mechanical transmission geological drilling rig 2; the grouting pump should use a single-cylinder single-action reciprocating plunger grouting pump 3, the working pressure of the grouting pump should be greater than 5.0MPa, and the single pulse volume It should be greater th...
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