老虎台矿28002工作面综放开采导水裂隙发育规律
Development law of water conducting cracks and prediction of water inflow in 28002 working face of Laohutai mine
金珠鹏 1田彦卫 1郑德强 2侯斯阳2
作者信息
- 1. 黑龙江科技大学 矿业工程学院,哈尔滨 150022
- 2. 抚顺矿业集团有限责任公司 老虎台矿,辽宁 抚顺 113003
- 折叠
摘要
为研究综放开采覆岩导水裂隙带发育高度,以老虎台矿区28002 工作面为研究背景,分析了老虎台矿区内 12 组工作面导水裂隙带高度实测数据,得到了导水裂隙带高度计算的回归公式,并通过理论计算和数值模拟相结合的方法,对导水裂隙带发育高度进行预测,结合钻孔窥视,观察裂隙带上方含水层的岩性特征.结果表明:经验公式、回归公式和数值模拟结果显示28002 工作面采后导水裂隙带发育高度分别为131.49、117.34 和153.9 m.其发育最高点均位于计军屯组的油母页岩内,而油母页岩作为良好的隔水层为顶板防水提供了有效保障;通过钻孔窥视,计军屯组上方的页岩含水层裂隙发育程度较好,易形成导水通道,威胁工作面的安全回采.
Abstract
This paper is intended to investigate the developing height of the water conducting fracture zone in overlying strata of the fully mechanized mining.The study building on 28002 working face in the Laohutai mining area as the research background involves investigating the measured data of the water conducting fracture zone height in 12 groups of working faces in Laohutai mining area by using data analy-sis methods;obtaining the regression formula for calculating the height of the water conducting fracture zone;comprehensively predicting the development height of the water conducting fracture zone through a combination of theoretical calculation and numerical simulation methods;and observing the lithological characteristics of the aquifer above the fracture zone through drilling observation.The results show that according to the empirical formula,regression formula and numerical simulation,the developing height of water conducting fracture zone in 28002 working face after mining are 131.49,117.34 and 153.9 m,re-spectively.The highest developing point is located in the oil shale of Jijuntun formation,which serves as a good waterproof layer for providing effective protection for the roof waterproofing.However,through drilling observation,the shale aquifer above the Jijuntun formation has a relatively good degree of fracture development,which can easily form water conducting channels and affect the safe mining of the working face.
关键词
导水裂隙带/老虎台矿/钻孔窥视Key words
water conducting fracture zone/Laohutai mine/drilling observation引用本文复制引用
基金项目
黑龙江省"揭榜挂帅"科技攻关项目(2021ZXJ02A03)
出版年
2024
国家科技期刊平台
NSTL
万方数据