四柱放顶煤液压支架支护能力技术研究.pdf

第20卷第2期(总第123期
媟矿开采
Vol. 20NO2(Series No 123)
2015年4月
COAL MINING TECHNOLOGY
April 2015
四桂放项媒液A支架式护能力技木研究
王彪谋2,高素英,杜忠孝2
(1.天地科技股份有限公司开采设计事业部,北京100013;2.煤炭科学研究总院开采设计研究分院,北京100013;
3.北京中煤矿山工程有限公司,北京,100013)
[摘要]煤矿广泛采用鉸接顶梁结构的四柱放顶煤液压支架,存在的问题是前梁端部支撑能
カ小,顶梁结构复杂,封闭性差,支架前部容易出现片帮、冒顶。采用整体顶梁结构的四柱放顶牒液
压支架,顶梁前端的支撑力大,可有效防止煤壁片帮、冒顶,但该架型支架前、后柱受力不均带来的
问题比较突出,严重时造成工作面支架压死。理论研究和实际应用表明,要针对煤层开采条件进行个
性化设备选型和液压支架优化设计,选用整体顶梁结枃的四柱放顶煤液压支架,建议其额定工作阻力
估算值应比普通饺接顶梁放顶煤支架提高约1.4-1.6倍。
[关键词]四柱放顶煤液压支架;铰接顶梁;整体顶梁;工作阻カ
[中图分类号]TD355.41[文献标识码]A[文章编号]1006-6225(2015)02-0027-03
Supporting Ability of 4-prop Powered Support for Top-coal Caving
WANG Biao-mou=, GAO Su-ying,DU Zhong-xiao.2
(1. Coal Mining& Designing Department, Tiandi Science Technology Co, Ltd, Beijing 100013, China
2. Coal Mining Designing Research Branch, China Coal Research Institute, Beijing 100013, China
3. Beijing Z hongmei Mine Engineering Co, Ltd. Beijing 100013, China)
Abstract: 4-prop powered support with hinged top-beam for top-coal caving was widely used in coal mines, but its small supportin
force of top-beam end, complex top-beam structure and bad closure usually resulted into coal-wall slide and roof fall. Applying whole
top-beam technology to improving supporting force of top-beam could effectively prevent coal-wall slide and roof fall, but this would
form unbalanced force between front prop and rear prop and even result into support crushing. Theoretical analysis and practice showed
that special equipment lectotype and optimized powered support design for coal-seam condition was necessary. When selecting 4-prop
powered support with whole top-beam for top-coal caving, it was suggested that its rated working resistance should be 1.4 1.6 time
of common powered support with hinged top-beam.
Keywords: 4-prop powered support for top-coal caving; hinged top-beam whole top beam; working resistance
煤矿广泛采用铰接顶梁结构的四柱放顶煤液压象,严重时造成工作面支架压死。因此,研究不同
支架,存在的问题是前梁端支撑能力小,顶梁结构结构四柱放顶煤支架的实际支撑能力,合理确定支
复杂,封闭性差,支架前部容易出现片帮、冒顶。架额定工作阻力是非常必要的
采用整体顶梁结构的四柱放顶煤液压支架,顶梁前
端的支撑力大,可有效防止煤壁片帮、冒顶,但该
支架现场应用实例
架型的主要问题是支架前、后柱受力不均,经常出
内蒙古薛家湾矿区放顶煤工作面四柱支架选用
现支架顶梁低头、前立柱涨缸、后立柱拉坏等现情况如表1所示。
表1薛家湾矿区四柱放顶媟液压支架选用情况统计
矿井名称煤层厚度/m采高m支架型号
顶梁结构支架重量/kg
唐公塔煤矿
12.88
ZF13000/26/40型四柱放顶煤液压支架
铰接顶梁
36800
补连沟煤矿
16,5
ZF13800/27/43型四柱放顶煤液压支架
铰接顶梁
38000
孙家豪煤矿
ZF13000/23/42型两柱放顶煤液压支架
铰接顶梁
酸刺沟煤矿
3.5~4.0
ZF21000/25/45D型四柱放顶煤电液支架
整体页梁
52000
黄玉川煤矿7.1~11.73.5-4.0ZF2100025/45D型四柱放顶煤电液支架
整体顶梁
52000
内蒙古薛家湾地区主采6号煤层,直接顶为砂质泥岩、中粒砂岩,平均厚度7.49m,基本顶为细
[收稿日期]2014-06-1
DOI10.13532/j.cnki.cnl1-3677/td.2015.02.008
[基金项目]2013国有资本金项目:大型煤矿综放开采支架研究(ZDJS-2010KCSJ-1-2-2)
[作者简介]王虎谋(1963-),男,甘肃民勤人,研究员,现任开采装技术研究所副所长,从事综采工作面总体配套和液压支架设计研
[引用格式]王彪谋,高素英,杜忠孝.四柱放顶渫液压支架支护能力技术研究「J]?煤矿开采,2015,20(2):27-29,55