深井大断面沿空留巷分阶段底鼓特征分析

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• 英文论文题名：Analysis on floor heave features of large cross section gob-side entry retaining in deep mine
• 论文作者：华心祝 ; 李志华 ; 李迎富 ; 杨朋 ; 阚甲广
• 英文论文作者：Hua Xinzhu ; Li Zhihua ; Li Yingfu ; Yang Peng ; Kan Jiaguang ; Provincial and MOE Joint Key Lab of Safety and High Efficient Mining in Coal Mine ; Anhui University of Science and Technology ; School of Energy and Safety Engineering ; Anhui University of Science and Technology ; School of Mining Engineering ; China University of Mining and Technology
• 年：2016
• 作者机构：安徽理工大学煤矿安全高效开采省部共建教育部重点实验室;安徽理工大学能源与安全学院;中国矿业大学矿业工程学院;
• 论文关键词：沿空留巷 ; 深井大断面 ; 底鼓特征 ; 围岩稳定性
• 英文论文关键词：gob-side entry retaining ; large cross section in deep mine ; floor heave features ; stability of surrounding rock
• 会议召开时间：2016-11-29
• 会议录名称：第三届煤炭科技创新高峰论坛——煤炭绿色开发与清洁利用技术与装备论文集
• 语种：中文
• 分类号：TD353
• 学会代码：ZGMT
• 会议名称：第三届煤炭科技创新高峰论坛——煤炭绿色开发与清洁利用技术与装备
• 会议地点：中国北京
• 主办单位：中国煤炭工业协会、中国煤炭科工集团有限公司、中国煤炭学会、煤炭科学研究总院
• 学会名称：中国煤炭学会
• 页数：5
• 文件大小：1498k
• 原文格式：O
• 会议级别：全国

摘要

针对深井大断面沿空留巷底鼓剧烈,防控难度大,以顾桥煤矿1115(1)工作面地质条件为工程背景,利用FLAC~(3D)三维数值模拟软件研究了深井大断面沿空留巷分阶段底鼓特征。研究结果表明:从开掘到报废留巷底鼓严重,掘巷阶段就产生较大的底鼓量,一次采动阶段底板变形继续增大,二次采动阶段底板变形更加剧烈,底鼓量累计超过1 000 mm,其中掘巷、一次采动及二次采动3个阶段的底鼓量分别达到总底鼓量的21%、32%、47%。一次采动影响下工作面前方30 m至工作面后方60m范围内巷道底鼓剧烈,应作为底鼓防治的重点区域。研究成果可为深井大断面沿空留巷底鼓防控提供指导。
According to the serious floor heave and difficult prevention and control of the large cross section gob-side entry retaining in the deep mine,based on the geological conditions of No.1115(1) coal mining face in Guqiao Mine as the engineering background,a FLAC~(3D)numerical simulation software was applied to study the sectional floor heave features of the large cross section gob-side entry retaining in the deep mine.The study results showed that from the initial driving to the abandoned,the floor heave of the gateway retained was serious.A serious floor heave was occurred in the gateway driving stage.At the primary mining stage,the floor deformation was continuously increased.At the secondary mining stage,the floor deformation was more serious.The total floor heave value was over 1 000 mm.Among the gateway driving,primary mining and secondary mining stages,the floor heave value individually reached the 21%,32%and 47%of the total heave value.Under the influences of the primary mining,the floor heave of the gateway was serious from 30 m in front of the coal mining face to 60 m at the rear of the coal mining face and those areas should be the key areas to prevent and control the floor heave.The study results could provide the guidance to prevent and control the floor heave of the large cross section gob-side entry retaining in the deep mine.

引文

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