Double-row pile enclosure structure for foundation pit construction

The utility model discloses a double-row pile enclosure structure for foundation pit construction, and relates to the technical field of foundation pit enclosure, the double-row pile enclosure structure comprises a pile casing, a first high-pressure jet grouting pile is arranged on one side of the pile casing, a plurality of second high-pressure jet grouting piles are arranged on the back row of the pile casing, and a third high-pressure jet grouting pile is fixedly connected between every two adjacent second high-pressure jet grouting piles; the pile casing is a hollow cylinder with an opening in the upper portion, a plurality of vertical first steel bars are arranged in the pile casing, and the multiple first steel bars are evenly distributed in the circumferential direction of the inner side wall of the pile casing. When a first adjusting screw rod rotates, a first adjusting cylinder and a second adjusting cylinder are pushed through threads, so that the second adjusting cylinder drives a movable plate to