Pressure bearing water level determining method for constant-flow water pumping of lower foundation pit of suspension type waterproof curtain

• Main Authors: WU HUAINA, SHEN SHUILONG, ZHANG NING, WU YONGXIA
• Format: Patent
• Language: Chinese; English
• Published: 02.03.2016
• Subjects: EMBANKMENTS; EXCAVATIONS; FIXED CONSTRUCTIONS; FOUNDATIONS; HYDRAULIC ENGINEERING; SOIL SHIFTING; UNDERGROUND OR UNDERWATER STRUCTURES

The invention provides a pressure bearing water level determining method for constant-flow water pump of a lower foundation pit of a suspension type waterproof curtain. According to the method, the ground water level when the waterproof curtain doesn't enter an aquifer and the ground water level change caused by the waterproof curtain are determined in a constant-flow water pumping process based on obtained soil layer information and water pumping information of the pressure bearing aquifer and according to the Darcy law and the water volume conservation principle. Thus, pressure bearing water levels in and out the lower foundation pit of the suspension type waterproof curtain in constant-flow water pump can be determined. By means of combination of the Darcy law, the water volume conservation principle and the ground water percolation theory, the distribution of pressure bearing water levels in and out the foundation pit can be visually reflected in foundation pit dewatering. Therefore, basis for analyzing e