Circular coal yard of a coastal power plant is under construction with soft ground geological condition. Under the action of coal load

the lateral displacement of the soil may cause the internal force and horizontal radial displacement of the bored pile under retaining coal wall exceed the limit

and even cause soil destruction

a serious threat to the safety of the structure. Through the calculation and analysis

the CFG pile is arranged in the heap coal site to form the composite foundation

which can better convey the pile coal load and avoid the excessive soil lateral displacement and bored pile internal force and horizontal radial displacement. It is a reasonable way of foundation treatment.