Foundation pit dewatering construction structure with good stability and long service life

The foundation pit dewatering construction structure is good in stability and long in service life and comprises a soil layer, a filtering layer is arranged in the soil layer, a filtering pipe is arranged in the filtering layer, a supporting plate is fixedly arranged at the bottom end of the filtering pipe, a plurality of sets of drill rods are fixedly arranged at the bottom end of the supporting plate, and the drill rods are fixedly arranged on the supporting plate. Two sets of connecting rods are fixedly arranged on the two sides of the top end of the supporting plate, the ends, away from the supporting plate, of the two sets of connecting rods are fixedly connected with a connecting ring, a sliding groove is formed in the inner wall of the filtering pipe, a filtering inner pipe is slidably arranged in the sliding groove, and a filtering net is arranged in the filtering inner pipe; a water pump is fixedly arranged at the top end of the filtering layer, a water pumping pipe is fixedly arranged at the water i