Coal mine goaf settlement amount measuring and calculating method

Abstract

The invention discloses a method for measuring and calculating the settlement amount of a coal mine goaf, and aims to solve the technical problems that the current settlement amount measurement and calculation are not accurate, and settlement which has occurred and settlement which is about to occur cannot be distinguished. The method mainly comprises the steps of collecting regional coal mine geological data, and determining a geological marker bed according to a regional stratum structure, coal bed thickness, coal bed burial depth and geological characteristics; selecting a representative point location with historical exploration data, and counting absolute elevations of the top and bottom of the geological marker bed at the representative point location; geological prospecting holes are constructed beside the representative point locations again, and the absolute elevation of the bottom and the top of the geological marker bed after mining is found out; the settlement deformation value of the point location can be obtained by subtracting the absolute elevation of the bottom and the top of the corresponding mark layer after mining from the absolute elevation of the bottom and the top of the mark layer before mining, and the settlement deformation values obtained from the representative corresponding top and the bottom of the layer can also be mutually corrected. The method is simple and clear in theory, simple and applicable in technical method, high in operability and accurate and reliable in result.

Description

technical field [0001] The invention relates to the technical field of prevention and control of geological disasters and geological environmental problems, in particular to a method for measuring and calculating the settlement amount of a goaf in a coal mine. Background technique [0002] As early as 1995, my country's coal output exceeded 1.2 billion tons, ranking first in the world. In 2020, the country's raw coal output reached 3.84 billion tons. Most of the development and utilization of coal resources belong to the underground mining method. Based on the underground mining of coal resources, a certain range of underground coal mine goafs will inevitably be formed. According to industry experts, when coal production reaches 200 million tons, 80-100km 2 coal mine goaf. The underground mining of coal resources in various places has left a large number of goafs. These goafs are distributed in a wide area, with different regional geological conditions, and the buried dept...

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Problems solved by technology

[0005] The purpose of the present invention is to provide a method for measuring and calculating the settlement of goafs in coal mines, so as to solve the technical problems of inaccurate calculation of settlements before the goafs of coal mines and the inability to distinguish the settlements that have occurred and the settlements that will occur

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