Efficient and safe fast hole formation method adopting rotary excavating machinery for slide-resistant piles
A technology of anti-sliding piles and rotary pile machines, which is applied in the direction of drilling equipment and methods, rotary drilling rigs, sheet pile walls, etc., and can solve the problem of low efficiency of artificially excavated piles breaking into rocks and slow construction progress of artificially excavated piles , blasting and excavation are not allowed, and achieve the effects of fast speed, safe construction and reduced construction cost
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Embodiment 1
[0082] Taking the landslide prevention project as an example, the side slope supporting structure adopts pile-slab retaining wall support, and the pile foundation size is 1.5m×2.4m rectangular anti-slide piles. See the hole forming process Figure 1~7 As shown, the following steps are generally included:
[0083] A. Positioning of anti-slide pile holes
[0084] A.1 The contour line of the anti-sliding pile hole is rectangular, that is, the contour line of the anti-sliding pile hole is the largest rectangular line. Determine the 1.5m×2.4m rectangular line 1 of the anti-sliding pile hole;
[0085] A.2 According to the length of the short side of the rectangular line as D=1.5m, and the hole diameter of the medium or large rotary drilling rigs on the market is 0.8~2.5m, the drill bit diameter of the rotary pile rig is determined to be d 1 =1.8m;
[0086] A.3 Determine the position of the first drilling pile core along the short side of one side of the rectangular line, such as figure 1 As...
Embodiment 2
[0094] The present invention is illustrated by taking a landslide prevention project as an example. The side slope supporting structure adopts a pile-slab retaining wall for supporting and a rectangular anti-slide pile with a pile foundation size of 1.5m×2.4m. See the construction method Figure 8-7 As shown, the following steps are generally included:
[0095] A. Stakeout
[0096] A.1 Sprinkle with gray lines to determine the contour line 1 of the anti-slide pile hole (1.5m×2.4m);
[0097] A.2 According to the short side length of the anti-slide pile hole contour line is 1.5m, the bore diameter of the medium or large rotary drilling rig on the market is 0.8~2.5m, and the drill bit diameter of the rotary drilling rig is determined to be 1.8m;
[0098] A.3 Determine the position of the first drilled pile core according to the short side of one side of the contour line of the anti-slide pile hole, such as Picture 8 As shown, the method of two tangent points and one radius is adopted, ...
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