CN105697045B - 掘进工作面伸缩顶梁支撑式临时支护方法 - Google Patents
掘进工作面伸缩顶梁支撑式临时支护方法 Download PDFInfo
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 [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 9
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D23/00—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor
- E21D23/04—Structural features of the supporting construction, e.g. linking members between adjacent frames or sets of props; Means for counteracting lateral sliding on inclined floor
- E21D23/06—Special mine caps or special tops of pit-props for permitting step-by-step movement
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D23/00—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor
- E21D23/16—Hydraulic or pneumatic features, e.g. circuits, arrangement or adaptation of valves, setting or retracting devices
Abstract
本发明公开了一种掘进工作面伸缩顶梁支撑式临时支护方法,它是通过临时支护支架实现的,所述的临时支护支架包括四柱式前架和四柱式后架、两个推移千斤顶和液压系统,所述的临时支护支架的两个推移千斤顶前分别设置在前架或后架的底座中,使后架向前架靠拢时可靠紧在一起;本发明在掘进巷道临时支护时,采用两套或两套以上的上述临时支护支架进行支护,移架中可以弥补空顶,对施工人员安全;再就是支护长度大,通过前后顺序操作,能有效地保障掘进工作面的安全。
Description
掘进工作面伸缩顶梁支撑式临时支护方法
技术领域
[0001]本发明涉及巷道掘进工作面临时支护技术。
背景技术
[0002]目前,井下掘进工作面所采用的临时支护形式有“戴帽点柱”支护、前探梁支护和 临时支护支架等形式。与本发明最接近的技术是采用临时支护支架。中国专利 201420137745 • 8公开了 一种顶梁伸缩式掘进工作面临时支护支架,它包括一个四柱式前架 和一个四柱式后架,前架和后架之间设有两个推移千斤顶,在推移千斤顶作用下前架和后 架可相互靠拢或远离;前架和后架的主体结构都是由四个伸缩式液压立柱、两个底座、两根 横梁和若干纵梁组成;其中纵梁内设有液压套管式伸缩前探梁;它还包括由液压栗站和液 压阀组组成的液压系统,液压阀组控制伸缩式液压立柱的升降、推移千斤顶和伸缩梁的伸 缩。由于两个推移千斤顶设置在前架和后架的底座之间,所以使前架和后架不能完全靠拢, 移架中不能相互靠的很近,在一定时间内有空顶现象,对施工人员不安全;再就是采用一组 临时支护支架时,前架和后架支护面积极小、支护效果不好、安全性差等,不能有效地保障 掘进工作面的安全,不能适应综掘机快速安全施工的需要,致使平均月进尺比较低,采掘接 续紧张。
发明内容
[0003] 本发明的目的是为克服现有技术的不足,提出一种掘进工作面伸缩顶梁支撑式临 时支护方法。
[0004] 为达到上述目的,本发明采取的技术方案是:
[0005] 一种掘进工作面伸缩顶梁支撑式临时支护方法,它是通过临时支护支架实现的, 所述的临时支护支架包括四柱式前架和四柱式后架、两个推移千斤顶和液压系统,其中前 架和后架由四个伸缩式液压立柱、两个底座和顶梁组成;顶梁包括两根横梁和若干纵梁,纵 梁内设有液压套管式伸前探缩梁;通过操作液压系统实现液压立柱的升降、推移千斤顶和 伸缩梁的伸缩,从而实现掘进巷道的临时支护与循环前移;其特征在于;
[0006] 所述的临时支护支架的两个推移千斤顶前分别设置在前架或后架的底座中,使后 架向前架靠拢时可靠紧在一起;
[0007] 支护方法为:
[0008] 第一步,设定临时支护支架的初始位置
[0009] 在掘进迎头放炮前,将两套或两套以上的临时支护支架布置在掘进巷道工作面, 布置顺序为:第一套前架、第一套后架、第二套前架、第二套后架。以此类推,各套均靠近在 一起,前探伸缩梁都处于缩回状态,使第一套前架的前端贴近待掘进的煤壁;此时工人在临 时支护支架掩护下进行打眼、装药放炮工作;
[0010] 第二步,第一套前架的前探伸缩梁伸出
[0011] 在掘进迎头放炮后,掘进顶板出现一定距离的空顶区,由于底板有乱煤及矸石支 架无法移动,此时操作第一套前架的前探伸缩梁伸出,支护住空顶区的顶板.此时工人在临 时支护支架掩护下进行排矸石工作;
[0012]第三步,第一套前架的移架准备
[0013]待碎煤和矸石排千净后,为第一套前架向前移动腾出了空间;此时,操作第一套前 架的四个液压立柱收缩,使第一套前架顶梁离开顶板;同时操作第一套前架前探伸缩梁缩 回、后架的前探伸缩梁伸出,以备弥补第一套前架前移后的部分空顶距;
[0014] 第四步,第一套前架的向前移架 ' ’
[0015] 操作第一套临时支护支架的推移千斤顶,推动第一套前架向前移动至放炮后的掘 进迎头;再操作第一套前架四个液压立柱升起支撑住顶板;
[0016] 第五步,第一套后架的向前移架 ' ’
[0017] 在第一套前架支撑住顶板后,操作第一套后架的四个液压立柱,使顶梁下降脱离 顶板,同时第二套前架的纵梁内伸缩梁伸出,弥补部分空顶距;再操作第一套的推移千斤顶 进行收缩,拉动第一套后架向前架靠近,靠近后操作第一套后架顶梁升起与巷道顶板进行 接触,从而完成第一套临时支护支架的前移;
[0018] 第六步,第二套临时支护支架的前移
[0019]按照第三步至第五步的工艺步骤依次进行第二套前架和第二套后架的前移动作, 完成第二套临时支护支架的前移;
[0020]以此类推,按照第三步至第五步的工艺步骤依次进行第二套以后所有临时支护支 架的前移,直至恢复到移架前的初始状态,然后进行下一个掘进循环。
[0021]本发明的积极效果是,由于临时支护支架的前架和后架可靠的很紧,移架中可以 弥补空顶,再加上前探伸缩梁的作用,相互之间不再有全部空顶现象,对施工人员安全;再 就是采用两套以上临时支护支架,支护长度大、通过前后顺序操作,能有效地保障掘进工作 面的安全,适应综掘机快速安全施工的需要,提高平均月进尺,平衡采掘关系。
附图说明
[0022] 图la是实施例的临时支护支架的初始位置的布置主视图;
[0023] 图lb是图la的俯视图。
[0024] 图2a是实施例的第一套前架的前探伸缩梁伸出状态主视图;
[0025] 图2b是图2a的俯视图;
[0026] 图3是实施例的第一套前架的移架准备状态主视图;
[0027] 图4是实施例的第一套前架移架时的前移状态主视图;
[0028] 图5是实施例的第一套前架移架时的升架后状态主视图;
[0029] 图6是实施例的第一套后架下降状态主视图;
[0030]图7是实施例的第一套后架移架后状态主视图;
[0031] 图8是实施例的第一套后架移架后升架状态主视图。
具体实施方式
[0032] 如图1-8所示,本发明的掘进工作面伸缩顶梁支撑式临时支护方法,是通过临时支 护支架实现的,所述的临时支护支架包括四柱式前架和四柱式后架、两个推移千斤顶和液 压系统,其中前架和后架由四个伸缩式液压立柱、两个底座和顶梁组成;顶梁包括两根横梁 和若干纵梁,纵梁内设有液压套管式伸前探缩梁;通过操作液压系统实现液压立柱的升降、 推移千斤顶和伸缩梁的伸缩,从而实现掘进巷道的临时支护与循环前移;其特征在于;
[0033]所述的临时支护支架的两个推移千斤顶前分别设置在前架或后架的底座中,使后 架向前架靠拢时可靠紧在一起;
[0034]在掘进巷道临时支护时,采用两套或两套以上的上述临时支护支架进行支护,支 护方法为:
[0035] 支护方法为:
[0036]第一步,设定临时支护支架的初始位置(见图la、图lb)
[0037]如图la、图lb所示;在掘进迎头放炮前,将两套或两套以上的临时支护支架布置在 掘进巷道工作面,布置顺序为:第一套前架、第一套后架、第二套前架、第二套后架。以此类 推,各套均靠近在一起,前探伸缩梁都处于缩回状态,使第一套前架的前端贴近待掘进的煤 壁;此时工人在临时支护支架掩护下进行打眼、装药放炮工作,
[0038]第二步,第一套前架的前探伸缩梁伸出(见图2a、图2b)
[0039]如图2a、图2b所示,在掘进迎头放炮后,掘进顶板出现一定距离的空顶区,由于底 板有乱煤及矸石支架无法移动,此时操作第一套前架的前探伸缩梁伸出,支护住空顶区的 顶板;此时工人在临时支护支架掩护下进行排矸石工作。
[0040]第三步,第一套前架的移架准备(见图3)
[0041]如图3所示,待碎煤和矸石排千净后,为第一套前架向前移动腾出了空间;此时,操 作第一套前架的四个液压立柱收缩,使第一套前架顶梁离开顶板;同时操作第一套前架前 探伸缩梁缩回、后架的前探伸缩梁伸出,以备弥补第一套前架前移后的部分空顶距。
[0042] 第四步,第一套前架的向前移架(见图4-5)
[0043] 如图4所示,操作第一套临时支护支架的推移千斤顶,推动第一套前架向前移动至 放炮后的掘进迎头;
[0044]如图5所示,再操作第一套前架四个液压立柱升起支撑住顶板;
[0045]第五步,第一套后架的向前移架(见图6-8)
[0046]如图6所不,在第一套_架支撑住顶板后,操作第一套后架的四个液压立柱,使顶 梁下降脱离顶板,同时第二套前架的纵梁内伸缩梁伸出,弥补部分空顶距; 、
[0047]如图7所不,再操作弟一套的推移千斤顶进行收缩,拉动第一套后架向前架靠近;
[0048] 如图8所示,靠近后操作第一套后架顶梁升起与巷道顶板进行接触,从而完成第一 套临时支护支架的前移;
[0049] 第六步,第二套临时支护支架的前移
[0050]細第三步至第五步的工艺步骤依次进行第二套前架和第二套后架的前 完成第二套临时支护支架的前移; ’ 陶]⑽難,觀第三步S鮮步的X艺步雛次进蹄二顏后所 架的前移,直至恢复到移架前的初始状态,然后进行下一个掘进循环。 日旧」又又
Claims (1)
1.一种掘进工作面伸缩顶梁支撑式临时支护方法,它是通过临时支护支架实现的,所 述的临时支护支架包括四柱式前架和四柱式后架、两个推移千斤顶和液压系统,其中前架 和后架由四个伸缩式液压立柱、两个底座和顶梁组成;顶梁包括两根横梁和若干纵梁,纵梁 内设有液压套管式伸前探缩梁;通过操作液压系统实现液压立柱的升降、推移千斤顶和伸 缩梁的伸缩,从而实现掘进巷道的临时支护与循环前移;其特征在于; 所述的临时支护支架的两个推移千斤顶前分别设置在前架或后架的底座中,使后架向 前架靠拢时可靠紧在一起; 支护方法为: 第一步,设定临时支护支架的初始位置 在掘进迎头放炮前,将两套或两套以上的临时支护支架布置在掘进巷道工作面,布置 顺序为:第一套前架、第一套后架、第二套前架、第二套后架;以此类推,各套均靠近在一 起,前探伸缩梁都处于缩回状态,使第一套前架的前端贴近待掘进的煤壁;此时工人在临时 支护支架掩护下进行打眼、装药放炮工作; 第二步,第一套前架的前探伸缩梁伸出 在掘进迎头放炮后,掘进顶板出现一定距离的空顶区,由于底板有乱煤及矸石支架无 法移动,此时操作第一套前架的前探伸缩梁伸出,支护住空顶区的顶板;此时工人在临时支 护支架掩护下进行排矸石工作; 第三步,第一套前架的移架准备 待碎煤和矸石排千净后,为第一套前架向前移动腾出了空间;此时,操作第一套前架的 四个液压立柱收缩,使第一套前架顶梁离开顶板;同时操作第一套前架前探伸缩梁缩回、后 架的前探伸缩梁伸出,以备弥补第一套前架前移后的部分空顶距; 第四步,第一套前架的向前移架 操作第一套临时支护支架的推移千斤顶,推动第一套前架向前移动至放炮后的掘进迎 头;再操作第一套前架四个液压立柱升起支撑住顶板; 第五步,第一套后架的向前移架 ’ 在第一套前架支撑住顶板后,操作第一套后架的四个液压立柱,使顶梁下降脱离顶板, 同时第二套前架的纵梁内伸缩梁伸出,弥补部分空顶距;再操作第一套的推移千斤顶进行 收缩,拉动第一套后架向前架靠近,靠近后操作第一套后架顶梁升起与巷道顶板进行接触, 从而完成第一套临时支护支架的前移; 第六步,第二套临时支护支架的前移 按照第三步至第五步的工艺步赚次肺第二套前娜第二套后雑瓣动作,完成 第二套临时支护支架的前移; 以此类推,按照第二步至第五步的工艺步骤依次进行第二套以后肺临时支护支架的 前移,直至恢复到移架前的初始状态,然后进行下一个掘进循环。
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