近浅埋煤层双关键层工作面支架阻力确定

李国栋; 曹启正; 宋帅帅

doi:10.13568/j.cnki.651094.651316.2020.11.02.0003

您当前的位置：

首页 >

文章列表页 >

近浅埋煤层双关键层工作面支架阻力确定

生态·资源·环境 | 更新时间：2026-01-21

- 近浅埋煤层双关键层工作面支架阻力确定
- 近浅埋煤层双关键层工作面支架阻力确定
- 新疆大学学报（自然科学版中英文） 2021年38卷第6期页码：715-721
- 作者机构：
  
  1. 新疆大学地质与矿业工程学院
  2. 矿产资源生态环境保护性开采自治区教育厅普通本科高校重点实验室
  3. 菏泽市应急管理局
- 作者简介：
- 基金信息：
  
  新疆维吾尔自治区自然科学基金项目（2019D01C061）;新疆维吾尔自治区高校科研计划项目（XJEDU2017M008）
- DOI：10.13568/j.cnki.651094.651316.2020.11.02.0003
  中图分类号： TD323
- 纸质出版：2021
- 稿件说明：
移动端阅览
[1]李国栋,曹启正,宋帅帅.近浅埋煤层双关键层工作面支架阻力确定[J].新疆大学学报(自然科学版)(中英文),2021,38(06):715-721.
[1]李国栋,曹启正,宋帅帅.近浅埋煤层双关键层工作面支架阻力确定[J].新疆大学学报(自然科学版)(中英文),2021,38(06):715-721. DOI： 10.13568/j.cnki.651094.651316.2020.11.02.0003.

DOI：10.13568/j.cnki.651094.651316.2020.11.02.0003.

摘要

针对近浅埋煤层双关键层破断呈现大、小周期来压现象

本文以陕北榆神府矿区某矿井42111综采工作面为工程背景

采用理论分析和现场实测相结合的方法

研究了近浅埋煤层综采工作面顶板破断特征及矿压显现规律

现场矿压观测结果显示42111工作面顶板存在上、下两层关键层

双关键层破断后形成"双砌体梁"结构

其来压具有显著的大、小周期现象;通过建立顶板来压"支架围岩"相互作用力学模型

计算得到"双砌体梁"结构大周期来压时支架阻力不应小于10 241.09 k N

现场所选的ZY12000/20/40D型掩护式液压支架额定支护阻力为12 000 k N>10 241.09 k N

满足设计要求.42111工作面支架阻力现场实测表明:支架阻力区间呈正态分布

均位于其额定阻力范围且富裕度较大

说明选择的液压支架型号、指标较为合理

支架对采场顶板的支撑作用较好

有效保障了工作面顶板安全.

Abstract

In view of the phenonmenon of large and small of periodic weighting in the fracture of double key stratums in shallow coal seam

based on the research background of the 42111 fully mechanized coal mining face in Yushenfu mining area in northern Shaanxi Province

the theoretical analysis and the in-situ observation were adopted to study the ground pressure behavior and roof movement characteristics of the double key strata. The field pressure observation results show that there are upper and lower double key stratums above the roof of the 42111 working face. After the double key stratums broken

a “double masonry beam” structure formed

and the pressure had significant large and small periodic. Combined with the characteristics of roof breaking

the mechanical model of the interaction between the roof and the surrounding rock was established. It was calculated that the resistance of the support should not be less than 10 241.09 k N while the “double masonry beam” structure was compressed in a large period by the established model. The rated support resistance of the ZY12000/20/40 D type shielded hydraulic support selected on site meets the design requirements

it was 12 000 k N(bigger than 10 241.09 k N). The in-situ observation of the support resistance of the 42111 working face shows that the support resistance interval is normally distributed

all with in its rated resistance range and the abundance is relatively large

indicating that the selected hydraulic support model and indicators were reasonable

and the support had a better supporting effect on the stope roof

which can effectively ensure the safety of the working surface roof.

关键词

Keywords

references

李文平,王启庆,刘士亮,等.生态脆弱区保水采煤矿井(区)等级类型[J].煤炭学报, 2019, 44(3):718-726.LI W P, WANG Q Q, LIU S L, et al. Grade types of water-preserved coal mining coalmines in ecologically fragile area[J]. Journal of China Coal Society, 2019, 44(3):718-726.(in Chinese)

刘洪林,曹文祥,单成方,等.大倾角煤层采动覆岩破断特征相似模拟实验研究[J].新疆大学学报(自然科学版)(中英文), 2020,37(3):301-308.LIU H L, CAO W X, SHAN C F, et al. Similar simulation experimental study on fracture characteristics of overburden strata under mining with large dip angle[J].Journal of Xinjiang University(Natural Science Edition in Chinese and English), 2020, 37(3):301-308.(in Chinese)

方刚,刘洋,李昂.神府矿区浅埋煤层工作面煤柱稳定性评价[J].煤矿开采, 2019, 24(1):56-61.FANG G, LIU Y, LI A. Stability evaluation of working face coal pillar in shallow of Shenfu mine district[J]. Coal Mining Technology,2019, 24(1):56-61.(in Chinese)

侯忠杰.浅埋煤层关键层研究[J].煤炭学报, 1999, 24(4):359-363.HOU Z J. Study on key stratum in shallow seam[J]. Journal of China Coal Society, 1999, 24(4):359-363.(in Chinese)

许家林,朱卫兵,王晓振,等.浅埋煤层覆岩关键层结构分类[J].煤炭学报, 2009, 34(7):865-870.XU J L, ZHU W B, WANG X Z, et al. Classification of key strata structure of overlying strata in shallow coal seam[J]. Journal of China Coal Society, 2009, 34(7):865-870.(in Chinese)

黄庆享.浅埋煤层的矿压特征与浅埋煤层定义[J].岩石力学与工程学报, 2002, 21(8):1174-1177.HUANG Q X. Ground pressure behavior and definition of shallow seam[J]. Chinese Journal of Rock Mechanics and Engineering,2002, 21(8):1174-1177.(in Chinese)

黄庆享,刘文岗,田银素.近浅埋煤层大采高矿压显现规律实测研究[J].矿山压力与顶板管理, 2003, 20(3):58-59.HUANG Q X, LIU W G, TIAN Y S. Study on roof pressure of the large mining height in the approximate shallow coal seam[J].Ground Pressure and Strata Control, 2003, 20(3):58-59.(in Chinese)

冯军发,周英,张开智,等.浅埋近距离多煤层采空区下厚关键层破断特征及支架工作阻力确定[J].采矿与安全工程学报, 2018,35(2):332-338.FENG J F, ZHOU Y, ZHANG K Z, et al. Fracture characteristics of thick key stratum and calculation of shield work load under multiple coal seam mining gobs with shallow depth[J]. Journal of Mining&Safety Engineering, 2018, 35(2):332-338.(in Chinese)

黄庆享,周金龙,马龙涛,等.近浅埋煤层大采高工作面双关键层结构分析[J].煤炭学报, 2017, 42(10):2504-2510.HUANG Q X, ZHOU J L, MA L T, et al. Double key strata structure analysis of large mining height longwall face in nearly shallow coal seam[J]. Journal of China Coal Society, 2017, 42(10):2504-2510.(in Chinese)

鞠金峰,许家林,王庆雄.大采高采场关键层“悬臂梁”结构运动型式及对矿压的影响[J].煤炭学报, 2011, 36(12):2115-2120.JU J F, XU J L, WANG Q X.Cantilever structure moving type of key strata and its influence on ground pressure in large mining height work face[J]. Journal of China Coal Society, 2011, 36(12):2115-2120.(in Chinese)

谭云亮,宁建国,顾士坦,等.矿山压力与岩层控制(修订本)[M].北京:煤炭工业出版社, 2011.TAN Y L, NING J G, GU S T, et al. Ground pressure and strata control(revised version)[M]. Beijing:China Coal Industry Publishing House, 2011.(in Chinese)

钱鸣高,缪协兴,许家林,等.岩层控制的关键层理论[M].徐州:中国矿业大学出版社, 2003.QIAN M G, MIAO X X, XU J L, et al. Study of key strata theory in ground control[M]. Xuzhou:China University of Mining and Technology Press,2003.(in Chinese)

曹启正.凉水井煤矿浅埋薄基岩综采面顶板来压机理及其控制研究[D].徐州:中国矿业大学, 2018.CAO Q Z. Study on pressure mechanism and control of shallow-buried and fully-mechanized working face in Liangshuijing coal mine[D]. Xuzhou:China University of Mining and Technology, 2018.(in Chinese)

浏览量

186

下载量

CSCD

文章被引用时，请邮件提醒。

提交

工具集

关联资源

暂无数据