Research on floor heave characteristics of broken soft rocks with high geostress and its comprehensive control measures

LIU Quan-sheng; XIAO Hu; LU Xing-li; CUI Wen-tai

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Research on floor heave characteristics of broken soft rocks with high geostress and its comprehensive control measures

更新时间：2026-06-25

- Research on floor heave characteristics of broken soft rocks with high geostress and its comprehensive control measures
- Vol. 33, Issue 6, (2012)
- 作者机构：
  
  1. 中国科学院武汉岩土力学研究所岩土力学与工程国家重点实验室,武汉,430071
  2. 山东科技大学土木建筑学院,山东,青岛,266510
- 作者简介：
- 基金信息：
- DOI：
  CLC： TD263
- Online First：14 June 2012，
  
  Published：2012
- 稿件说明：
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LIU Quan-sheng, XIAO Hu, LU Xing-li, et al. Research on floor heave characteristics of broken soft rocks with high geostress and its comprehensive control measures[J]. 2012, 33(6).
DOI：

LIU Quan-sheng, XIAO Hu, LU Xing-li, et al. Research on floor heave characteristics of broken soft rocks with high geostress and its comprehensive control measures[J]. 2012, 33(6). DOI：

摘要

高地应力破碎软岩巷道底臌问题，由于其地质条件的复杂性，是煤矿开采的技术难题之一。通过总结分析高地应力破碎软岩巷道底臌的变形破坏特性，研究了底臌治理对策。研究结果表明，底板围岩呈现出挤压剪切流变特性，在支护对策上应将支护体系视为完整体系，在加强修复固结、应力转移和扩大承载圈的同时强调调动帮、顶部的间接控制作用。提出了以底板超挖、高强度预应力锚索、深孔注浆、底脚、拱角锚杆和回填为技术支撑的综合治理对策，通过FLAC3D建立的三维数值分析模型，分析了在综合治理对策下围岩位移场及塑性区的变化，验证了该方法的有效性。将综合治理对策应用到淮南潘二煤矿东二采区主要大巷，取得了良好的支护效果。

Abstract

The problem of floor heave of high geostress broken and soft rock roadways

because of its complex geological conditions

is one of the technical problems of coal mining. Deformation and failure characteristics of floor heave of high geostress broken soft rock are analyzed; and the control measures are studied. The results show that

surrounding rock shows compressive shear rheological properties

supporting system should be regarded as a complete system; it focuses on not only surrounding rock repair

stress transfer and enlarged load ring

but also on exploiting the indirect effect of other parts of the supporting system. Comprehensive control measures integrating overcutting floor

high-strength cable

deep-hole grouting

bottom corner rockbolt

side bottom rockbolt and backfill are put forward. Numerical analysis model is established by using FLAC3D; the changes of surrounding rock displacement field and plastic zones are analyzed while using the method; the validity of the method is verified. Comprehensive control measures applied to main roadways of Donger coal mining area

Paner mine

Huainan

makes a good supporting effect.

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