Improved high-density pool

The invention relates to an improved high-density pool. The improved high-density pool comprises a sludge precipitation prevention structure, wherein the sludge precipitation prevention structure comprises a plurality of slopes and a flushing header pipe; the plurality of slopes are respectively arranged at the junctions of two adjacent vertical tank walls and a tank bottom; a water inlet valve is arranged on the flushing header pipe, and the flushing header pipe communicates with a plurality of flushing pipes; the plurality of flushing pipes are respectively arranged along the junctions of the two tank walls at the plurality of slopes and are fixedly connected with the tank walls; two branch flushing pipes are separately arranged at the lower part of each flushing pipe and are respectively arranged along a corresponding slope surface and the corresponding junction of the two tank walls; a row of small holes are formed in each branch flushing pipe, and openings of the small holes face the corresponding slope