A division method based on the structure model of sub-layered sedimentary assemblages of Quaternary loose strata

Abstract

The invention discloses a dividing method based on a quaternary system unconsolidated formation sub-layer deposition combining structural model. The method comprises the steps of determining the lithology, thickness and space combined deposition structural characteristics of each stratum under the quaternary system lower-part unconsolidated formation top interface according to boring data; drawing the combined deposition space distribution graph of the quaternary system lower-part unconsolidated formation according to the deposition characteristics of the quaternary system lower-part stratum; integrating the drawn stratum with the space distribution graph according to the dividing principle of stratum lithology; performing principle dividing of stratum thickness, sequentially dividing according to the thickness of the stratum from thin to thick, obtaining each sub-layer dividing outcome under the quaternary system lower-part unconsolidated formation, and naming each sub-layer of the quaternary system lower-part unconsolidated formation; and establishing the sub-layer deposition combined structural model under the quaternary system lower-part unconsolidated formation. The dividing method based on the quaternary system unconsolidated formation sub-layer deposition combining structural model provides a reference base for coal mining and recovers a large amount of sluggish coal mine resources, thus obviously improving the social and economic benefits of mine shafts and providing guarantee for safe production of the mine shafts.

Description

technical field [0001] The invention relates to a division method based on a Quaternary loose stratum sublayer sedimentary combination structure model, which belongs to the field of mining and geological exploration. Background technique [0002] At present, the safety of shallow coal seam mining in mining areas covered by loose layers depends critically on the water-rich conditions of the Quaternary bottom aquifer. According to the relevant regulations of the country, in order to ensure the safe mining of mines, it is necessary to reserve a reasonable height of safe coal rock pillars, and the reserved safe coal rock pillars hold a large amount of coal resources. Due to the complexity and heterogeneity of the Quaternary strata deposition, most mines have seldom studied the sedimentary combination structure, lithological characteristics and division methods of the bottom stratum of the Quaternary loose layer, and it is impossible to accurately define or prove the Coal seam m...

AI Technical Summary

Problems solved by technology

Due to the complexity and heterogeneity of the Quaternary strata deposition, most mines have seldom studied the sedimentary combination structure, lithological characteristics and division methods of the bottom stratum of the Quaternary loose layer, and it is impossible to accurately define or prove the Coal seam mining causes water inrush (sand inrush) to threaten the main aquifer and its water-rich conditions, which leads to unreasonable size of safe coal pillars left in a large number of mines, sluggish more coal resources or brings safety production problems to mines Therefore, a division method based on the sub-layered sedimentary combination structure model of the Quaternary loose strata is needed, which is used for the teaching and research of shallow coal seam mining in mining areas covered by loose strata, so as to ensure the safety of mining and ensure safety. Under the circumstances, the development of coal mine resources shall be carried out to the greatest extent, and the sluggish coal mine resources shall be reduced as much as possible

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