煤炭工程 ›› 2024, Vol. 56 ›› Issue (5): 18-23.doi: 10.11799/ce202405003

• 设计技术 • 上一篇    下一篇

采动影响下井筒安全评估研究

郭文砚,张俊英,刘志飞,陈清通   

  1. 煤炭科学技术研究院有限公司,北京 100013
  • 收稿日期:2022-10-08 修回日期:2024-03-25 出版日期:2023-05-20 发布日期:2025-01-03
  • 通讯作者: 郭文砚 E-mail:1375291076@qq.com

Evaluation of shaft safety under mining influence

  • Received:2022-10-08 Revised:2024-03-25 Online:2023-05-20 Published:2025-01-03

摘要:

针对升富煤矿周边煤矿工作面开采对其井筒安全影响问题,通过理论分析、现场实测和经验类比相结合的研究方法,划定了井筒保护煤柱范围,分析了工作面正常开采、区段煤柱开采和井筒煤柱压覆区域不开采三种方案下井筒不同位置处的移动与变形情况,提出了井壁采动损害等级、损坏分类及结构处理方法的评价指标分类,评价了采动影响下井筒安全稳定状况。结果表明:3煤01工作面正常开采和井筒煤柱压覆区域不开采两种情况下,主、副斜井不受采动影响,风井分别在距地面[0,50]m范围和[0,41]m范围为Ⅰ级(轻微)损坏,对井筒安全影响较小;若区段煤柱也开采,最不利情况下,主斜井在距井口[0,70] m 和(70,250] m范围分别为Ⅱ级(一般)损坏和Ⅰ级(轻微)损坏,风井在距地面[0,33]m、(33,58]m 和(58,90]m范围分别为Ⅲ级(较重)损坏、Ⅱ级(一般)损坏和Ⅰ级(轻微)损坏,风井损坏等级最高为Ⅲ级,将影响风井正常使用。

关键词: 井筒安全, 保护煤柱留设, 地层变形预计, 井筒损坏评价

Abstract:

Aimed at the problems of shafts safety of Shengfu coal mine which influenced by the mining of surrounding coal mine,the research methods that combined theoretical analysis,field measurements and empirical analogy were used. Firstly,the protect coal pillars ranges of shafts were delimited. Then the movement and deformation at different positions of the shafts for three schemes (the working face mined normally,the coal pillar also mined,and the shaft overburden area not mined) were predicted.Finally,the classification of the mining damage grade,damage classification and structural treatment method of the shaft were proposed,the safety and stability of the shaft affected by mining was evaluated. The results showed that the main and auxiliary inclined shafts were not affected by the mining and the wind shaft was damaged at level I (slight) in the range of [0,50m] from the ground when the three coal 01 working face was normally mined,thus there had little impact on the safety of the shafts. But when the coal pillar was also mined and in the most unfavorable case,the main inclined shaft would be damaged at level II (general),level I (slight) in the range of [0,70m] and (70,250m) from the wellhead respectively,and the wind shaft would be damaged at level III (heavy),level II (general) and level I (slight) in the range of [0,33m],(33,58m) and (58,90m] respectively,thus the highest level III damage to the air shaft,which would affect the normal use of the wind shaft.

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