煤炭工程 ›› 2025, Vol. 57 ›› Issue (12): 144-152.doi: 10. 11799/ ce202512019

• 研究探讨 • 上一篇    下一篇

基于综合赋权聚类方法的巷道围岩稳定性评价

石建军,闻志雄,冯吉成,牛格轩,吉志海,高延棋,董朝阳   

  1. 华北科技学院 矿山安全学院,河北 廊坊 065201
  • 收稿日期:2024-10-31 修回日期:2024-11-19 出版日期:2025-12-11 发布日期:2026-01-26
  • 通讯作者: 冯吉成 E-mail:389832929@qq.com

Research on stability evaluation of roadway surrounding rock based on comprehensive weighted clustering method

  • Received:2024-10-31 Revised:2024-11-19 Online:2025-12-11 Published:2026-01-26

摘要:

针对巷道围岩稳定性影响因素较为复杂的问题,以八连城煤矿为实地调查背景,采用模糊聚类分析方法研究了顶板强度、两帮强度、底板强度、埋深、顶高比(直接顶厚度与采高的比值)、煤柱宽度、最大水平主应力和垮落平均步距8个主要影响因素,建立评价模型,将巷道围岩分为非常稳定(),稳定(),中等稳定(),不稳定()和极不稳定()五个评价等级。并且运用多元逐步回归分析方法建立了围岩稳定性预测的回归方程,结果表明,模拟的精确度为0.911,能够很好的反映出主要影响因素与围岩稳定性的量化关系。开发了巷道围岩稳定性识别软件,能够快速地识别出巷道的类别,以分类结果为基础提出了支护优化设计,有效地减小围岩变形量。

关键词: 围岩稳定性, 组合权重, 模糊聚类分析, 回归分析

Abstract:

In response to the complex factors affecting the stability of roadway surrounding rock, based on the field investigation background of Balancheng Coal Mine, this paper adopts fuzzy cluster analysis method to study eight main factors affecting the roof strength, two-wall strength, floor strength, buried depth, top-to-height ratio (ratio of direct roof thickness to mining height), coal pillar width, maximum horizontal principal stress and average caving step, and establishes an evaluation model. The surrounding rock of the roadway is divided into five evaluation grades: very stable (Ⅰ), stable (Ⅱ), moderately stable (Ⅲ), unstable (Ⅳ) and extremely unstable (Ⅴ). The regression equation of surrounding rock stability prediction is established by using multiple stepwise regression analysis. The results show that the accuracy of simulation is 0.911, which can well reflect the quantitative relationship between the main influencing factors and the surrounding rock stability. The stability identification software of the surrounding rock of the roadway was developed, which could quickly identify the type of roadway, and the optimal design of support was proposed based on the classification results, which effectively reduced the deformation of the surrounding rock.

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