A single-well groundwater seepage flow velocity and flow measurement method and measuring instrument

Abstract

The invention provides a single-well underground water seepage flow velocity and flow direction measuring method and measuring instrument. The measuring instrument includes a controller and a seepage detector, the seepage detector includes a shell, an upper separator plate, an inclinometry integrated sensor, a pendulum bob and pressure sensors, the pendulum bob and the center of the upper separator plate are connected through a string, due to the function of water flow, a pendulum ball at the bottom of the pendulum bob is subjected to continuous seepage force, the seepage force is transited to the adjacent pressure sensor through a disc, at the same time, the inclinometry integrated sensor measures an inclination angle and an azimuth angle of the measuring instrument and azimuth angles of the pressure sensors, a gravity component of the pendulum bob at the moment can be known, and through vector calculation of force, the magnitude and direction of the seepage force can be judged and thus is indirectly converted into the flow velocity and flow direction of seepage. The measuring instrument has the characteristics of simple structure, low power consumption and the like, and the measuring method can be widely applied to seepage condition monitoring of underground buildings or rock and earth masses such as side slopes, underground diaphragm walls and dams.

Description

technical field [0001] The invention relates to a single-well groundwater seepage velocity and flow direction measurement method and measuring instrument in landslide investigation, belonging to the technical field of geological exploration. Background technique [0002] Landslides are a serious geological disaster worldwide. In landslide survey and monitoring projects, groundwater seepage caused by natural or human-induced changes in the hydrological environment has an important impact on the stability of landslide rock and soil. In order to accurately evaluate the correspondence between groundwater seepage activities and rock-soil disasters, it is necessary to accurately measure the groundwater activities in the landslide study area to provide data support for relevant engineering personnel. [0003] There are many types of measurement methods for the flow velocity and direction of groundwater, which can be mainly divided into indirect method and direct method. The indire...

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Problems solved by technology

[0005] The purpose of the present invention is to solve the current problems of high cost, complicated method or environmental pollution of groundwater seepage detection, and provide a method that can be placed at a certain depth in a borehole, and can monitor groundwater seepage velocity and flow direction in real time without being affected by the inclination of the borehole. The measurement methods and corresponding measuring instruments of the situation

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