Method for increasing rock core recovery rate of pile foundation construction investigation in limestone areas
A technology of core sampling rate and pile foundation, which is applied in the field of geological exploration, can solve problems such as inaccurate division, consumption of construction period, and large drilling footage, and achieve the goal of increasing core sampling rate, reducing abrasive consumption, and increasing the height of nozzle Effect
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[0040] The following is attached Figure 1-4 The application is described in further detail.
[0041] The embodiment of the present application discloses a method for improving the core recovery rate of pile foundation construction survey in limestone area, and adopts the following technical scheme:
[0042] refer to figure 1 and figure 2 , a method for improving the core recovery rate of pile foundation construction investigation in limestone areas, comprising the following steps:
[0043] S1. Clean up the site, enter and assemble the equipment, weld the drill body 200 on the drill pipe 100, and install the drill pipe 100 on the drilling rig;
[0044] S2. Connect the water outlet of the water delivery pump to the water distribution pan 900 at the top of the drill pipe 100, wherein the pipe is connected to the water distribution pan 900 in a rotating and sealed manner, which can be connected through a rotating sealed bearing. The interior is hollow to form a sealed water ...
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