Calculation method for drop water quantity, drop water width and thickness of upper water zone of underground drop water

Abstract

The invention belongs to the field of scarp drop water and specifically relates to the calculation method for a drop water quantity, a drop water width and a thickness of an upper water zone of underground drop water. The method comprises the following steps: 1, punching a hole in the upstream area, recording a point where the scarp is as the coordinate origin of the x-axis, and obtaining the distance L from the hole punched in the upstream zone to the coordinate origin; 2, measuring the thickness hl of an aquifer at the distance L from the hole in the upstream zone to the coordinate origin, ahydraulic conductance coefficient kr of the horizontal seepage at the scarp and a hydraulic conductance coefficient kd of the vertical seepage; 3, calculating the drop water quantity q, the drop water width R and the thickness of the upper water layer h0 of the underground drop water by the formula 1 according to the values of L, hl, k, kr and kd obtained in steps 1 and 2. The invention objectively simulates the water drop phenomenon of the groundwater seepage field and provides a mathematical model for groundwater simulation and groundwater evaluation. The invention can improve the accuracyof groundwater calculation and evaluation and can be widely used in the fields of groundwater resource evaluation and protection, groundwater environmental impact assessment and pollution prevention and control, water damage assessment and prevention of underground works.

Description

technical field [0001] The invention belongs to the technical field of hydrogeology, in particular to the field of underground water flow calculation, and specifically relates to a calculation method for the amount of falling water, the width of falling water, and the thickness of a water layer above a ridge. Background technique [0002] In the piedmont of the basin, there are many large faults parallel to the mountain, and the Quaternary basement often has a large vertical displacement due to the action of the fault, causing the Quaternary phreatic flow to change from horizontal runoff to vertical infiltration when passing through the basement steep sill. The ground water falls due to leakage, which makes the groundwater level on both sides of the steep slope discontinuous, and the groundwater level difference can be as high as tens of meters or even more than 100m. The groundwater in the upper and lower aquifers on both sides of the steep slope has no direct hydraulic conn...

AI Technical Summary

Problems solved by technology

[0004] Aiming at the problem that the analytical model of the existing scarp water drop in the prior art does not consider the heterogeneity of the aquifers on both sides of the scarp, resulting in the inaccurate calculation and analysis of the water drop and seepage field, the present invention proposes The method for calculating the amount of falling water, the width of the falling water, and the thickness of the water layer above the ridge includes the following steps:

Images