花岗岩地区的残积土层中随机埋藏的“孤石”和强风化基岩中所夹的中风化至微风化球状风化残留体“孤石雏形”给桩端持力层正确鉴定带来困难,综合检验法和场地统筹法是这种情况下桩基持力层检验的最佳方法。 Randomly buried “solitary stone” in the residual soil layer in the granite area and moderate weathered to micro-weathered spherical weathered remnant trapped in the residual soil layer in the granite area and the “isolated stone prototype” to give the correct identification zone to the pile end bearing layer Difficult to come, comprehensive inspection method and site planning method is the best method for testing the bearing layer of piles in this case.