东北大学学报（自然科学版）

东北大学学报:自然科学版 ›› 2018, Vol. 39 ›› Issue (4): 558-563.DOI: 10.12068/j.issn.1005-3026.2018.04.021

• 资源与土木工程 • 上一篇    下一篇

初次来压前综采工作面前方应力影响区范围

于健洋1,2， 李元辉1， 于适维2， 刘帅2   

  1. (1. 东北大学 深部金属矿山安全开采教育部重点实验室， 辽宁 沈阳110819; 2. 辽宁省矿产勘查院， 辽宁 沈阳210100)
  • 收稿日期:2016-09-22 修回日期:2016-09-22 出版日期:2018-04-15 发布日期:2018-04-10
  • 通讯作者: 于健洋
  • 作者简介:于健洋(1988-)，男，辽宁铁岭人，东北大学博士研究生; 李元辉(1969-)，男，辽宁营口人，东北大学教授； 博士生导师.
  • 基金资助:
    国家自然科学基金资助项目(51171041).国家自然科学基金资助项目(50704012)； 辽宁省博士启动基金资助项目(20061017)； 辽宁省地质勘探矿业集团科研项目(2018).

Stress Influenced Area in Front of Fully-Mechanized Mining Face Before First Weighting

YU Jian-yang1,2， LI Yuan-hui1， YU Shi-wei2， LIU Shuai2   

  1. 1. Key Laboratory of Ministry of Education on Safe Mining of Deep Metal Mines， Northeastern University， Shenyang 110819，China; 2. Liaoning Provincial Institute of Mineral Exploration， Shenyang 210100， China.
  • Received:2016-09-22 Revised:2016-09-22 Online:2018-04-15 Published:2018-04-10
  • Contact: YU Jian-yang
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摘要： 基于岩梁传递理论和关键层理论，分析了综采工作面前方的应力分布特征，提出工作面上方一定区域的老顶与工作面前方支撑压力区共同构成了翘梁结构.建立了翘梁结构力学分析模型，推导出了初次来压前综采工作面前方支撑压力区范围的量化公式，结合FLAC数值模拟获取计算所需的重要参数，即弹性损伤传递系数.以铁法晓楠矿SW4102工作面为例计算出工作面前方支撑压力区及翘曲应力区范围，并通过现场实测进行验证.

关键词: 翘梁结构, 翘曲应力区, 支撑压力区, 弹性损伤传递系数, FLAC数值模拟

Abstract: Based on the rock beam transmission theory and the key strata theory， the stress distribution characteristics in front of the fully-mechanized mining face were analyzed， and a warping beam structure composed by the main roof covering the mining face and the support pressure area in front of the fully-mechanized mining face was proposed. A mechanical analysis model of the warping beam structure was built to deduce the quantitative formula of the supporting area before the first weighting. The FLAC numerical simulation was used to obtain the transfer coefficient of elastic damage. The SW4102 mining face of Xiaonan coal mine was adopted as a real case to study the ranges of the warped stress zone and the support pressure zone， and results was verified by the in-situ monitoring data.

Key words: warped beam structure, warped stress zone, support pressure zone, transfer coefficient of elastic damage, FLAC numerical simulation

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