The measuring device for the sinking of soft ground

摘要

The present invention relates to a soft ground subsidence measuring apparatus using a semiconductor pressure sensor, more specifically, a reference the working liquid is contained in the water tank to the water head pressure acting on the sensor member semiconductor pressure sensor through the tube, the bubble generated in the interior of the bubble tube measuring the correct action of the air cushion in order to overcome the difficulties caused by the working liquid contained in the provide a structure which can easily be discharged to the atmosphere, and, from time to time only the amount of fluids for a certain amount of consumption by improving the structure of the endless supply, such as in the conventional structure to maintain a constant water level in the tank is lost by evaporation, etc. Based on relates to a soft ground subsidence measuring apparatus using a semiconductor pressure sensor having a structure that supplements ; According to the invention, with which the working fluid based on a water bath maintained at a constant level; Sensor and operated by the water head pressure of the working liquid; Connected at both ends to be respectively communicated with the water tank with the reference sensor and the inlet tube and an outlet tube for circulating the working fluid; Signal cables and the sensor portion for transmitting the detected value; Lead-out unit for outputting the input signal to the value of the decorating by the signal cable; in the soft ground subsidence measuring apparatus is configured to include, coupled to the reference tank in the automatic level control valve which is opened only when a certain water level below, a certain amount of working liquid is stored in the automatic water level adjustment tank is exposed to the atmospheric pressure is provided, the outlet tube is protruded to the upper portion of the working liquid in the tank based on soft ground subsidence measuring apparatus provided with a semiconductor pressure sensor to be installed is exposed to atmospheric pressure .