Measuring method and device for foundation pit deep horizontal displacement and underground water level

Abstract

The invention discloses a monitoring device for foundation pit deep horizontal displacement and the underground water level. The monitoring device comprises a monitoring module which is formed by detachably assembling a plurality of monitoring units in series. Universal couplings are adopted for mechanical connection between the monitoring units. Electric power and electric signals are all connected through cables with aviation plugs or sockets. According to the monitoring device for the foundation pit deep horizontal displacement and the underground water level, the multiple inclination monitoring units are connected in series, and therefore the monitoring device can adapt to deformation of a monitoring hole and can continuously monitor inclination changes of the monitoring hole for a long time in the monitoring hole. All the monitoring units are connected through spherical joints, the monitoring device can still be sunk into or be pulled out of the monitoring hole freely under the condition that the monitoring hole deforms, the repeated usage rate of the device is increased, and the engineering cost is reduced.

Description

technical field [0001] The invention relates to a monitoring device and method for deep horizontal displacement and groundwater level of a foundation pit, in particular to a monitoring device for automatic measurement of deep horizontal displacement and groundwater level of a foundation pit in the same monitoring hole and the use of the device for measurement Methods. Background technique [0002] With the rapid development of urban construction, there are more and more deep foundation pit construction projects such as urban underground transportation stations, super high-rise buildings, and high-speed railway engineering stations. [0003] During the excavation process of the deep foundation pit, various stresses will cause the displacement of the supporting structure and the deformation of the soil inside and outside the deep foundation pit. The excessive displacement of the supporting structure and the soil supported by the supporting structure will not only endanger the...

AI Technical Summary

Problems solved by technology

The groundwater level of the foundation pit usually requires surveyors to collect data on site, and automatic telemetry cannot be implemented, so the effectiveness is poor

Moreover, since there is no equipment to simultaneously measure the tilt displacement and water level in one monitoring hole, the foundation pit inclinometer pipe and the water level pipe must be buried separately, thus increasing the construction cost and construction period

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