顶板离层水突涌模式及预防技术模拟研究

张文泉; 王在勇; 吴欣焘; 邵建立; 雷煜; 吴绪南

doi:10.3969/j.issn.1001-1986.2021.01.023

顶板离层水突涌模式及预防技术模拟研究

doi: 10.3969/j.issn.1001-1986.2021.01.023

张文泉^1,2,
王在勇^1,2, ,,
吴欣焘^1,2,
邵建立^1,2,
雷煜^1,2,
吴绪南^1,2

基金项目:

国家自然科学基金项目（51774199）

详细信息

第一作者:
张文泉,1965年生,男,山东淮坊人,教授,博士生导师,从事特殊开采、矿井水害防治相关工作.E-mail:wenquanzhang@163.com

通信作者:
王在勇,1994年生,男,四川广元人,硕士研究生,从事煤矿顶板水害研究工作.E-mail:zaiyongwang@163.com

中图分类号: TD745
计量
- 文章访问数: 140
- HTML全文浏览量: 19
- PDF下载量: 32
- 被引次数: 0
出版历程
- 收稿日期: 2020-11-12
- 修回日期: 2021-01-15
- 发布日期: 2021-02-25

Investigation and simutation on the model and prevention technology of water inrush from roof bed separation

ZHANG Wenquan^1,2,
WANG Zaiyong^{1,2
, ,},
WU Xintao^1,2,
SHAO Jianli^1,2,
LEI Yu^1,2,
WU Xunan^1,2

摘要

摘要: 为预防顶板离层水突涌产生的安全事故，提出了部分充填方案进行模拟研究。首先通过现有资料总结分析全国发生的多种离层水害事故，深入研究离层积水致灾模式；然后以陕西某矿首采区1307工作面的离层水害事故为例，分析其水文地质条件、上部含水层和离层水突涌的关系，利用3DEC数值软件模拟工作面顶板离层空间发育特征；最后根据该矿的实际情况，提出部分充填开采方式预防离层水突涌的技术措施，并对该矿的部分充填方案进行优化模拟研究。研究结果表明：根据发生条件的不同将离层水突涌划分为5种模式，离层积水过程分为初始积水期、积水至满期和裂隙扩展期；在保持充填率不变的情况下，随着走向采宽和充填宽度的同时同量增加，充填体对上覆岩层支撑作用逐渐增强，离层下部隔水层出现两侧应力增大现象，最佳部分充填方案为采宽80 m，充填宽度80 m，为顶板离层水害的预防提供新的思路。
- 离层水突涌模式 /
- 数值模拟 /
- 部分充填 /
- 优化 /
- 预防
Abstract: In order to prevent water inrush from roof separation, a partial backfill scheme is proposed for simulation study. First of all, based on the existing data, many kinds of separation water inrush accidents occurred in China were summarized and analyzed, and the disaster model of separation water accumulation was studied deeply. Then, taking the separation water accident of 1307 working face in the first mining area of a mine in Shaanxi Province as an example, the hydrogeological conditions and the relationship between upper aquifer and separation water inrush were analyzed, and the development characteristics of roof separation space of working face were simulated by 3DEC numerical software. Finally, according to the actual situation of the mine, the technical measures to prevent water inrush from bed separation by partial backfill mining method were put forward, and the partial backfill scheme of the mine was optimized and simulated. The results showed that according to the different occurrence conditions, water inrush from roof bed separation was divided into five models. The process of separation water accumulation could be divided into initial water accumulation period, full water period and crack propagation period. When the filling rate unchanged, with the increase of strike mining width and backfill width at the same time, the supporting effect of the backfill strip on the overlying strata increased gradually, and the stress in the lower aquifer of the bed separation increased on both sides. The best scheme of partial backing is 80 m mining width and 80 m backfill width, which provides a new idea for the prevention of water inrush from roof bed separation.
- model of water inrush from bed separation /
- numerical simulation /
- partial backfill /
- optimization /
- prevention

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参考文献(22)

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