Land subsidence monitoring and early warning system based on global position system (GPS) and hydrostatic leveling

Abstract

The invention discloses a land subsidence monitoring and early warning system based on global position system (GPS) and hydrostatic leveling and belongs to the field of geological disaster monitoring and early warning. The system comprises a monitoring station, a base station and a monitoring and early warning center which are distributed, wherein a GPS receiver in the monitoring station and a datum point in a hydrostatic leveling system are mounted on a same observation pillar; the GPS receiver transmits received satellite observation data to the monitoring and early warning center; a data acquisition unit acquires monitoring data of a hydrostatic leveling instrument and transmits the data to the monitoring and early warning center; the GPS receiver in the base station receives the satellite observation data of a stable area point of the base station and transmits the data to the monitoring and early warning center; and the monitoring and early warning center receives the information transmitted by the monitoring station and the base station and processes and analyzes the data. According to the system, the problem that the monitoring point subsidence amount is inaccurate in measurement after a stable datum point is unavailable or the datum point is subsided in a measuring process of the hydrostatic leveling system can be solved, and a high-precision land subsidence value is acquired in real time.

Description

technical field [0001] The invention belongs to the technical field of geological disaster monitoring and early warning, and relates to a ground subsidence monitoring and early warning system based on GPS and static leveling. Background technique [0002] Land subsidence, also known as ground subsidence or ground subsidence, is defined as "slowly varying geological disasters" in China's "Regulations on the Prevention and Control of Geological Hazards". It is a local downward movement (or engineering geological phenomenon) that reduces the elevation of the crustal surface due to the consolidation and compression of the underground loose strata under the influence of natural and human engineering economic activities. The natural factors causing land subsidence are the tectonic movement of the earth's crust and the natural compaction of the surface soil. Land subsidence caused by human factors is widely seen in some large cities and oil, coal or natural gas mining areas where ...

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Problems solved by technology

[0006] In view of this, the purpose of the present invention is to provide a ground subsidence monitoring and early warning system based on GPS and static leveling, which can solve the problem of subsidence of the monitoring point after the settlement of the reference point without a stable reference point or during the measurement of the static leveling system. In order to solve the problem of inaccurate measurement, through the combination of GPS monitoring and static leveling system, the layout of encrypted monitoring points can be used to obtain high-precision land subsidence values ​​in real time

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