| 摘要 |
The present invention relates to an underground wall construction method using pile, and the purpose of the present invention is to smoothly construct an underground wall without damage to concrete piles. The present invention includes: a first step of vertical excavating a first excavation hole (4) in an underground (2); a second step of inserting and installing a first pile (10) in the first excavation hole (4); a third step of repeating the excavating a second excavation hole (4a) below the lower end of the first pile (10) and the rising up a casing (21) to slide down the soil (3) which is filled in the first excavation hole (4) into the second excavation hole (4a), and inserting the pile (10) to the planned depth to descend according to the soil sliding down; a fourth step of withdrawing the casing (21) from the second excavation hole (4a) to the ground; a fifth step of inserting and installing a second pile (10a) in the second excavation hole (4a); a sixth step of repeating the excavating a third excavation hole (4b) below the lower end of the second pile (10a) and the rising up the casing (21) to slide down the soil (3) which is filled in the second excavation hole (4a) into the third excavation hole (4b), and inserting the second pile (10a) to the planned depth to descend according to the soil sliding down; and a seventh step of repeating a process of withdrawing the casing (21) from the third excavation hole (4b) to the ground, vertical installing the other piles in the underground as same as the fifth and sixth steps, and withdrawing the casing (21) to the ground. |
