Detection method and detection method for grouting filling treatment effect of coal mine goaf

Abstract

A detection method for a grouting filling treatment effect of a coal mine goaf specifically comprises the following steps: performing drilling sampling on stratums of the coal mine goaf after groutingfilling, a fissure zone after grouting and a caving zone, and sampling no less than three samples at each stratum position of the above parts; detecting the settlement amount of the goaf, the fissurezone and the caving zone after grouting and filling; obtaining mechanical indexes of an in-situ standard penetration test, obtained physical and mechanical property detection indexes of a sample center in a laboratory, and numerical values of detection settlement amounts of settlement marks in a goaf and a non-goaf. According to the invention, the ground surface detection device and the goaf andbed separation settlement monitoring devices with different depths are arranged, the numerical values of the subsidence amount of the subsidence rod in the goaf and the non-goaf can be conveniently observed, detected and read, important parameters are provided for experiments, and the compactness condition and the subsidence condition of zone grouting can be conveniently and efficiently collectedand detected through the arrangement of the structure.

Description

technical field [0001] The invention belongs to the technical field of coal mining goaf treatment and detection, and in particular relates to a detection device and a detection method for the treatment effect of coal mine goaf grouting filling. Background technique [0002] The vast majority of coal mines in my country are underground coal mines. Coal mines include large areas above and below ground and associated facilities. At present, after coal mining, a mined-out area will be formed underground. As time goes by, the upper stratum of the goaf will gradually deform, forming bending zones, fissure zones and collapse zones, making the surface subsidence and reducing the bearing capacity of the foundation. If the unsettled and stable coal mining subsidence area is used as construction land, after the load on the upper structure increases, the foundation of the structure and the stratum in the nearby goaf will continue to settle unevenly. The foundation and the curved zone,...

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Problems solved by technology

[0003] However, at this stage, there is no good detection device for detecting the effect of foundation treatment after grouting filling in coal mine goaf, and there is no systematic method to detect the effect of foundation treatment after grouting filling in coal mine goaf. Mos

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