第1期
第44卷
2017年2月
矿业安全与环保
MINING SAFETY & ENVIRONMENTAL PROTECTION
宗义江，高杰.下伏开采款岩巷道底鼓机理与控制技术[J].矿业安全与环保，2017,44(1):53-57.
文章编号：1008-4495(2017)01005305 技术经验
下伏开采软岩巷道底鼓机理与控制技术
宗义江12高杰2
（1.江苏建筑职业技术学院能源与交通工程学院，江苏徐州221116；
2.中国矿业大学深部岩土力学与地下工程国家重点实验室，江苏徐州221116）
Vol 44 No. 1 Feb.2017
摘要：综合运用现场实测、数值模拟与工程实践等手段，分析了硅槽煤矿下伏煤层开采软岩巷道围岩的变形破坏特点，揭示了下伏开采软岩巷道底鼓机理：下伏煤层采动使巷道底板成为碎裂结构，并致使巷道两帮产生收效变形挤压底板；破碎的巷道底板在地应力和集中应力共同作用下向巷道内移动，形成底鼓。提出了由预留变形量、初次高性能锚网喷支护、锚注二次加固、底角高性能锚固与注浆加固组成的底鼓控制技术。工程应用效果表明，所提出的底鼓控制技术有效地控制了巷道底鼓，保证了巷道围岩和支护结构的稳定，可为其他下伏开采软岩巷道的支护设计与底鼓控制提供理论依据和实践参考。
关键词：深井软岩巷道；下伏开采；变形破坏；底鼓机理；底鼓控制
中图分类号：TD32
文献标志码：B
网络出版时间：2017-02-0620：59
网络出版地址：http：//www.cnki.ne/kcms/detail/50.1062.TD.20170206.2059.004.html
Floor Heave Mechanism of SoftRoadway in Mining of Underlying Coal Seam and
ItsControl Technology ZONG Yjiang-2,GAO Jie?
(1. School of Energy and Traffie Engineering,Jiangsu Vocational Institute of Architectural Technology,Xuzhou 221116, China;
2. State Key Laboratory for Geomechanics and Deep Underground Engineering,
China University of Mining and Technology,Xuzhou 221116, China)
Abstract; In this paper,analysis was made on the deformation and failure characteristics of the surrounding rock of the soft roadway in the mining of underlying coal seam in Dengcao Mine by means of field measurement, numerical simulation and engineering practice,and based on this, the floor heave mechanism of the soft roadway were revealed; the floor stratas became extremely cracked due to the mining of underlying coal seam; the broken roadway floor moved towards the roadway under the combined action of the concentrated stress and strata stress,which caused the formation of floor heave. For this purpose,a control technology with the combination of reserving defomation,boltnetanchorshotcrete support,boltgrouting consolidation,bottom angie anchorage and consolidation by grouting was proposed, The effect of engineering application showed that the proposed control technology could effectively control the floor heave and deformation of the roadway and guarantee the stability of the surrounding rock and support structure of the roadway,so it can provide some theoretical basis and practical reference for support design and floor heave control of other soft roadways with underlying seam mining.
Keywords; deep soft roadway; underlying mining;deformation failure;floor heave mechanism;floor heave control
随着煤炭开采逐渐向深部延伸，深部软岩巷道收稿日期：2016-06-23
基金项目：国家自然科学基金项目（51574223）
作者简介：宗义江（1983一），男，山东曹县人，博士，讲师，主要从事深部岩石力学与工程稳定方面的研究工作。E-
mail:zyjcumt126.com。万方数据
的大变形、大地压、难支护的工程问题日趋严重(1-3) 深部巷道围岩力学性质呈现出明显的软化特征，巷道不仅两帮变形严重，而且底鼓强烈，且持续变形，使得底鼓成为软岩巷道矿压显现的主要特征，是亟待解决的技术难题(4-5)。长期以来，国内外许多专家学者对底鼓机理和控制技术作了大量的研究工作，取得了许多重要的理论研究成果。姜耀东、陆士良、
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