ISSN 1003-8035 CN 11-2852/P
    赵翠,覃红亮,朱昱桦,等. 贵州龙潭组地层煤矿地下开采引发地质灾害特点及成因机理分析−以AH煤矿地质灾害为例[J]. 中国地质灾害与防治学报,2024,35(0): 1-9. DOI: 10.16031/j.cnki.issn.1003-8035.202308011
    引用本文: 赵翠,覃红亮,朱昱桦,等. 贵州龙潭组地层煤矿地下开采引发地质灾害特点及成因机理分析−以AH煤矿地质灾害为例[J]. 中国地质灾害与防治学报,2024,35(0): 1-9. DOI: 10.16031/j.cnki.issn.1003-8035.202308011
    ZHAO Cui,QIN Hongliang,ZHU Yuhua,et al. Characteristics and causal mechanism analysis of geological hazards induced by underground mining in the longtan formation coal mine group in Guizhou: A case study of AH coal mine geological disasters[J]. The Chinese Journal of Geological Hazard and Control,2024,35(0): 1-9. DOI: 10.16031/j.cnki.issn.1003-8035.202308011
    Citation: ZHAO Cui,QIN Hongliang,ZHU Yuhua,et al. Characteristics and causal mechanism analysis of geological hazards induced by underground mining in the longtan formation coal mine group in Guizhou: A case study of AH coal mine geological disasters[J]. The Chinese Journal of Geological Hazard and Control,2024,35(0): 1-9. DOI: 10.16031/j.cnki.issn.1003-8035.202308011

    贵州龙潭组地层煤矿地下开采引发地质灾害特点及成因机理分析以AH煤矿地质灾害为例

    Characteristics and causal mechanism analysis of geological hazards induced by underground mining in the longtan formation coal mine group in Guizhou: A case study of AH coal mine geological disasters

    • 摘要: 长期以来,从事矿山地质灾害成因分析的专家学者主要从自然因素和人为因素这两方面来研究,自然因素指地形地貌、地质构造、岩溶作用、降雨、风化作用以及植物根劈等天然原因,人为因素指采矿等人为活动,但尚未论证引发地质灾害的主要原因及次要原因。本文以AH煤矿为例,通过现场调查、工程测量以及综合分析,总结了贵州龙潭组地层煤矿开采引发的地质灾害特点,主要发育地面塌陷、崩塌等2类地质灾害,其中塌陷坑均发育于第四系,规模均为小型;崩塌(危岩体)发育于长兴组灰岩,具有凹岩腔较为发育、受陡倾裂隙控制等特点,按体积分类为中小型危岩,按所处相对高度分类均为中位危岩。采用理论计算及图解法,从煤层开采安全深度及采空区影响范围等2个维度来定量分析,研究表明该煤矿范围内地面塌陷的形成原因为地下采煤造成;崩塌危岩体的险情形成,地下采煤为主要诱发因素,自然条件为次要因素。本研究有助于完善类似矿山地质灾害成因分析理论,对于类似矿山地质灾害防治工作具有理论指导意义。

       

      Abstract: For a long time, experts and scholars engaged in the analysis of the causes of mine geological disasters have primarily studied two aspects: natural factors and human factors. Natural factors refer to natural causes such as topography, geological structures, karst processes, rainfall, weathering, and plant root splitting. Human factors refer to human activities such as mining. However, the main and secondary causes of geological disasters triggered by these factors have not been thoroughly investigated. This paper takes AH coal mine as an example and, through field investigations, engineering surveys, and comprehensive analysis, summarizes the characteristics of geological disasters induced by the mining of the Longtan Formation coal mines in Guizhou. The main geological disasters observed include ground subsidence and collapse. The subsidence pits are all developed in the Quaternary system and are of small-scale. Collapses (hazardous rock masses) are developed in the Changxing Formation limestone, characterized by well-developed rock cavities, and controlled by steeply inclined fractures. They are classified as medium-sized hazardous rock masses based on volume and as intermediate hazardous rock masses based on relative elevation. Using theoretical calculations and graphical methods, a quantitative analysis is conducted from two dimensions: the safe depth of coal mining and the range of influence of goaf (the area left behind after coal extraction). The research indicates that the formation of ground subsidence within the coal mine area is primarily caused by underground coal mining while the perilous situation of rockfall masses is mainly induced by underground coal mining, with natural conditions playing a secondary role. This study contributes to the improvement of theoretical analysis of the causes of similar mining geological hazards and provides theoretical guidance for the prevention andcontrol of similar mine geological disasters.

       

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