厚松散层高强度开采岩层与地表移动模拟

doi:10.16265/j.cnki.issn1003-3033.2018.01.022

中国安全科学学报 ›› 2018, Vol. 28 ›› Issue (1): 130-136.doi: 10.16265/j.cnki.issn1003-3033.2018.01.022

厚松散层高强度开采岩层与地表移动模拟

赵高博¹, 郭文兵^1,2 教授, 娄高中¹, 马志宝¹

1 河南理工大学能源科学与工程学院,河南焦作454000
2 河南理工大学煤炭安全生产河南省协同创新中心,河南焦作 454000

收稿日期:2017-10-18 出版日期:2018-01-28 发布日期:2020-09-28
作者简介:赵高博 (1996—),男,河南南乐人,硕士研究生,研究方向为“三下”开采、岩层移动与控制。E-mail:644336484@qq.com。
基金资助:
国家自然科学基金资助(51774111);河南省科技创新杰出人才基金资助(184200510003)。

Numerical simulation of movement of both rock mass and surface under thick loose layer high-intensity mining condition

ZHAO Gaobo¹, GUO Wenbing^1,2, LOU Gaozhong¹, MA Zhibao¹

1 School of Energy Science and Engineering, Henan Polytechnic University, Jiaozuo Henan 454000, China
2 Collaborative Innovative Center of Coal Safety Production in Henan Province, Henan Polytechnic University, Jiaozuo Henan 454000, China

Received:2017-10-18 Online:2018-01-28 Published:2020-09-28

摘要/Abstract

摘要： 为研究厚松散层高强度开采引起的岩层与地表移动,对霍宝干河矿某工作面的覆岩破坏及地表沉降进行三维数值模拟,得到该高强度开采工作面在不同推进距离时采空区上覆岩层的塑性区和垂直位移分布云图。对覆岩破坏特征及地表沉降进行了综合分析。用概率积分法和现场实测值验证数值模拟的有效性。结果表明:3种方法得到的地表沉降值接近;覆岩破坏发育过程可划分为4个阶段:起始阶段、缓增阶段、突增阶段和终止阶段;覆岩破坏边界呈正八字形,厚松散层移动边界呈倒八字形,最终呈现出“类沙漏”形岩体与地表移动边界。

关键词: 厚松散层, 高强度开采, 覆岩破坏, 地表沉降, 岩体与地表移动边界

Abstract: To study the movement of both rock mass and surface caused by high-intensity mining under thick loose layer, 3D numerical simulations were carried out for a certain working face in Huobaoganhe Coal Mine taken as a sample. Distribution of overburden failure plastic zone and that of as a function of the vertical stress advance distance were obtained. Characteristics of overburden failure and surface subsidence were analyzed comprehensively. The effectiveness of the numerical simulations was verified by means of the probability integral method and the field measured values. The research results show that the predicted surface subsidence values of the above three methods are close together, and thus the numerical simulation results are credible, that the process of overburden failure is divided into four stages: an initial stage, a slowly increasing stage, a suddenly increasing stage and an ending stage, and that the failure boundary of overlying strata is like a Chinese character corresponding to the word of eight, while that of the moving boundary of thick loose layer looks like an inverted Chinese character corresponding to the word of eight, and a "hourglass" shape is formed by the two boundaries.

Key words: thick loose layer, high-intensity mining, overburden failure, surface subsidence, rock mass and surface moving boundary

中图分类号:

X936

赵高博, 郭文兵, 娄高中, 马志宝. 厚松散层高强度开采岩层与地表移动模拟[J]. 中国安全科学学报, 2018, 28(1): 130-136.

ZHAO Gaobo, GUO Wenbing, LOU Gaozhong, MA Zhibao. Numerical simulation of movement of both rock mass and surface under thick loose layer high-intensity mining condition[J]. China Safety Science Journal, 2018, 28(1): 130-136.

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厚松散层高强度开采岩层与地表移动模拟

Numerical simulation of movement of both rock mass and surface under thick loose layer high-intensity mining condition

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