WO2015196872A1 - 一种固体充填采煤液压支架撤架方法 - Google Patents

一种固体充填采煤液压支架撤架方法 Download PDF

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WO2015196872A1
WO2015196872A1 PCT/CN2015/078837 CN2015078837W WO2015196872A1 WO 2015196872 A1 WO2015196872 A1 WO 2015196872A1 CN 2015078837 W CN2015078837 W CN 2015078837W WO 2015196872 A1 WO2015196872 A1 WO 2015196872A1
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hydraulic support
coal mining
filling
support
solid
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French (fr)
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巨峰
缪协兴
张吉雄
邓雪杰
王旭锋
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Priority to AU2015281641A priority Critical patent/AU2015281641B2/en
Priority to US15/319,292 priority patent/US10036252B2/en
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    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK 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
    • E21D23/0481—Supports specially adapted for use in combination with the placing of filling-up materials
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D15/00—Props; Chocks, e.g. made of flexible containers filled with backfilling material
    • E21D15/60—Devices for withdrawing props or chocks
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK 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
    • E21D23/0004—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor along the working face
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
    • E21F13/00—Transport specially adapted to underground conditions
    • E21F13/006—Equipment transport systems
    • E21F13/008—Equipment transport systems for mine roof support units for step-by-step movement
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
    • E21F15/00—Methods or devices for placing filling-up materials in underground workings
    • E21F15/02—Supporting means, e.g. shuttering, for filling-up materials
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
    • E21F15/00—Methods or devices for placing filling-up materials in underground workings
    • E21F15/06—Filling-up mechanically
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
    • E21F15/00—Methods or devices for placing filling-up materials in underground workings
    • E21F15/08—Filling-up hydraulically or pneumatically

Definitions

  • the invention relates to a method for withdrawing a hydraulic support in a mining technology, in particular to a method for withdrawing a hydraulic support for solid filling and mining in coal mining.
  • the basic principle of solid filling coal mining technology is to use concrete filling equipment such as coal mining hydraulic support and porous bottom unloading conveyor to backfill solid materials such as vermiculite and fly ash into the goaf to realize comprehensive mechanized filling technology and tradition.
  • the comprehensive mechanized coal mining technology is organically combined to ensure that there is sufficient filling space for the filling coal mining face, and it is required to fill the coal mining hydraulic support with a larger single-supported roof support compared with the ordinary supporting shield hydraulic support.
  • the protection area when the mining coal mining face is finished and the equipment is moved, compared with the ordinary support shield hydraulic support, the filling coal mining hydraulic support needs a larger transfer channel, and a large span will be left after the equipment is moved.
  • the suspended working face of the roof is closed, how to ensure the smooth withdrawal of the hydraulic support for filling coal mining and the temporary and strengthening support for the suspended ceiling in the process of unloading, which will directly affect the safety and efficiency of the moving equipment. At the same time, it is also a serious impact if the equipment can be effectively and permanently supported after the equipment is moved. Filling the key factor controlling the mobile mining and subsidence of top plate overlying seam.
  • the object of the present invention is to provide a method for removing a hydraulic support of a solid-filled coal mining coal with simple operation method, low cost and good effect in view of the problems existing in the prior art.
  • the method for withdrawing a solid-filled coal mining hydraulic support according to the present invention comprises the following steps:
  • the space roof for filling the coal mining hydraulic support, the scraper conveyor and the filling and mining conveyor Strengthening support, forming a walkway, and strengthening the row spacing L of the support is 2.0m;
  • the withdrawal channel has a width of 3 m to 4 m.
  • the method for temporarily supporting the top control range of the first filling coal mining hydraulic support is a single pillar + " ⁇ " steel beam.
  • the method of reinforcing the support is to hit the raft, and the raft is closed with a tape, and then the concrete syrup is poured into the raft by a shotcrete machine.
  • the size of the raft is 2.0 m x 2.0 m.
  • the grouting pipeline is located in the pedestrian passage between the two rows of rafts (13), and three grouting pipelines are arranged in the direction from the coal conveying chute to the rail chute.
  • a total of three grouting pipelines are laid from the coal conveying channel to the track chute, respectively, which are located at the working face for the upper, middle and lower positions.
  • the grouting pipeline Through the grouting pipeline, the concrete slurry is filled into the eye to fill the entire eye space, thereby forming a permanent support for the overlying strata of the eye.
  • the hydraulic support of the solid-filled coal mining face is safely and efficiently removed, and the effective control of the movement of the overlying strata and the surface subsidence is achieved.
  • the method is simple, easy to operate, obvious in effect, and has wide practicality.
  • FIG. 1 is a top view of the arrangement of the eye-receiving device and the support of the top plate before the hydraulic support of the filling coal mining according to the present invention is removed;
  • FIG. 2 is a plan view showing the arrangement of the eye raft and the grouting pipe after the hydraulic support of the filling coal mining of the present invention is withdrawn.
  • 1-filled coal mining hydraulic support 2-front coal body, 3-extraction channel, 4-extraction track, 5-track groove, 6-winch, 7-miner, 8-first frame Filling coal mining hydraulic support, 9-first section scraper conveyor, 10-first section filling mining conveyor, 11-coal conveying tank, 12-grouting pipeline, 13-raft, 14-person walkway.
  • the space top plate of the filling coal mining hydraulic support 8, the scraper conveyor 9 and the filling mining conveyor 10 which are sequentially removed is strengthened and supported to form the pedestrian passage 14, and the spacing L between the reinforcing supports is 2.0. m;
  • the withdrawal channel 3 has a width of 3 m to 4 m.
  • the method for temporarily supporting the top control range of the first filling coal mining hydraulic support 8 is a single pillar + " ⁇ " steel beam.
  • the method of reinforcing the support is playing the raft 13, sealing the raft 13 with tape, and then pouring the concrete slurry into the raft 13 by using a spray machine.
  • the raft 13 has a size of 2.0 m x 2.0 m.
  • the grouting pipeline 12 is located in the pedestrian passage 14 between the two rows of rafts (13), and three grouting pipelines 12 are laid from the coal conveying trough 11 to the rail chamfering 5 direction.
  • Example 1 Take the working face of Yangfang Mine III644 of Huaibei Mining Group as an example:
  • the coal seam of III644 working face is 6# coal, the average thickness of coal is 2.7m, the average inclination angle is 18°, the coal seam structure is simple, the buried depth is 360m ⁇ 515m; the working face is 340m long and the inclined width is 110m, and it is integrated with mechanized solid filling;
  • the top control range is to use the single pillar + " ⁇ " steel beam for temporary support, remove the first filling coal mining hydraulic support 8, from the III644 coal handling slot 11 to The III644 track is transported out of the unloading track 4 in the direction of the slot 5;
  • the space roof of the first filling coal mining hydraulic support 8 is removed by using two rows of rafts 13, and the raft 13 is closed by a tape, and then the concrete slurry is poured into the raft 13 by a shotcrete machine.
  • the size of the raft (13) is 2.0m ⁇ 2.0m, and the row spacing L is 2.0m;
  • the width of the withdrawal passage (3) is 3m to 4m; the first support for filling the hydraulic support of the coal mining (8) is controlled by a single pillar + " ⁇ " steel beam; the first frame Filling the coal mining hydraulic support (8) after the removal of the space roof is strengthened by the raft (13), and the raft (13) is closed with tape, and then the shotcrete is used in the raft (13).
  • Concrete grouting; raft (13) size is 2.0m ⁇ 2.0m, the row spacing L is 2.0m; working surface
  • the location of the grouting pipe (12) in the eye space is located in the pedestrian passage (14) between the two rows of rafts, and three slabs are placed from the coal conveying groove (11) to the track traversing groove (5).
  • the slurry pipelines (12) are respectively located at the working face to be in the upper, middle and lower positions of the eye.

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  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
  • Structural Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Architecture (AREA)
  • Excavating Of Shafts Or Tunnels (AREA)
  • On-Site Construction Work That Accompanies The Preparation And Application Of Concrete (AREA)

Abstract

一种固体充填采煤液压支架撤架方法，首先在液压支架（1）前方煤体（2）开掘撤架通道（3），并铺设撤架轨道（4），然后从运煤顺槽（11）至轨道顺槽（5）撤架，每拆一架前，采用单体支柱配合'π'型钢梁进行临时支护，拆除后及时用架设木垛（13）和灌浆方式加强支护顶板，待整个工作面支架拆除后，铺设三趟注浆管路（12），对整个收作眼空间进行灌浆。该方法实现了固体充填采煤液压支架（1）撤架过程中，工作面拆架空间顶板的稳定，确保了固体充填采煤工作面液压支架安全高效地撤架，同时保证了对收作眼上覆岩层的移动和地表沉陷的有效控制。

Description

一种固体充填采煤液压支架撤架方法 技术领域
本发明涉及一种采矿技术中液压支架撤架方法，尤其是适用于煤炭开采中固体充填开采液压支架的撤架方法。
背景技术
固体充填采煤技术的基本原理是采用充填采煤液压支架及多孔底卸式输送机等特殊的充填设备，将矸石、粉煤灰等固体物料回填至采空区，实现综合机械化充填技术与传统的综合机械化采煤技术有机的结合在一起，为保证充填采煤工作面具备足够的充填空间，要求充填采煤液压支架相比与普通的支撑掩护式液压支架，具备更大的单架顶板支护面积，在充填采煤工作面开采结束进行设备搬家时，相比于普通支撑掩护式液压支架，充填采煤液压支架需要更大的移架通道，且在设备搬家后会留下一个大跨度顶板悬空的工作面收作眼，如何保证充填采煤液压支架的顺利撤架以及撤架过程中收作眼悬空顶板的临时和加强支护，将直接影响到工作面设备搬家能否安全与高效的进行，同时，在工作面设备搬家后，能否对收作眼进行有效的永久支护，也是严重影响固体充填开采控制煤层上覆顶板移动以及地表沉陷的关键因素之一。
发明内容
技术问题：本发明的目的是针对已有技术中存在的问题，提供一种操作方法简单、费用低廉、效果好的固体充填采煤液压支架撤架方法。
技术方案：本发明的固体充填采煤液压支架撤架方法，包括如下步骤：
a、在充填采煤液压支架前方煤体开掘一条沿工作面方向的撤架通道，并按常规的锚网索+单体支柱方式支护裸露顶板；
b、在撤架通道内铺设撤架轨道，并在轨道顺槽内安装绞车；
c、拆除采煤机、第一架充填采煤液压支架前的第一节刮板输送机和第一节充填开采输送机；
d、对第一架充填采煤液压支架控顶范围进行临时支护，之后拆除第一架充填采煤液压支架，从撤架轨道运出；
e、依次对下一架充填采煤液压支架、下一节刮板输送机和下一节充填开采输送机拆除、运出、支护，直至整个工作面的充填采煤液压支架拆除完毕；
f、同时对依次移除的充填采煤液压支架、刮板输送机和充填开采输送机的空间顶板 进行加强支护，形成人行通道，加强支护的间排距L均为2.0m；
g、清理工作面内的其它剩余设备，在人行通道(14)内铺设注浆管路，对该空间进行注浆，完成固体充填采煤液压支架撤架工作。
所述撤架通道的宽度为3m～4m。
所述对第一架充填采煤液压支架控顶范围进行临时支护的方式为单体支柱+“π”型钢梁。
所述加强支护的方式为打木垛，采用胶带将木垛封闭，然后采用喷浆机在木剁内灌混凝土浆。
所述的木垛尺寸为2.0m×2.0m。
所述注浆管路位置在两排木垛(13)之间人行通道内，从运煤顺槽至轨道顺槽方向共铺设有三趟注浆管路。
有益效果：本发明的固体充填采煤液压支架撤架方法，充填采煤液压支架撤架前，在充填采煤液压支架前方煤体开掘一条沿工作面方向的撤架通道，并采用锚网索+单体支柱方式支护裸露顶板，在撤架通道内铺设撤架轨道，并在轨道顺槽安装绞车，按照从运煤顺槽至轨道顺槽方向经撤架轨道通过绞车将工作面设备运出，在支架撤离后，通过单体支柱+“π”型钢梁的临时支护和打木垛并在木剁内灌混凝土浆的加强支护维护收作眼悬空顶板的稳定，待工作面设备完全运出后，在两排木垛之间的人行通道内，从运煤顺槽至轨道顺槽方向共铺设三趟注浆管路，分别位于工作面收作眼上、中、下位置，通过注浆管路向收作眼注混凝土浆充满整个收作眼空间，从而对收作眼上覆岩层形成一个永久支护。实现了固体充填采煤工作面液压支架安全高效地撤架以及对收作眼上覆岩层的移动和地表沉陷的有效控制，其方法简单，易操作，效果明显，具有广泛的实用性。
附图说明
图1是本发明的充填采煤液压支架撤架前收作眼设备布置及顶板支护俯视图；
图2是本发明的充填采煤液压支架撤架后收作眼木垛及注浆管道布置俯视图。
图中：1－充填采煤液压支架，2－前方煤体，3－撤架通道，4－撤架轨道，5－轨道顺槽，6－绞车，7－采煤机，8－第一架充填采煤液压支架，9－第一节刮板输送机，10－第一节充填开采输送机，11－运煤顺槽，12－注浆管路，13－木垛，14－人行通道。
具体实施方式
下面结构附图对本发明的一个实施例作进一步的描述：
本发明的固体充填采煤液压支架撤架方法：
a、在充填采煤液压支架1前方煤体2开掘一条沿工作面方向的撤架通道3，并按常规的锚网索+单体支柱方式支护裸露顶板；
b、在撤架通道3内铺设撤架轨道4，并在轨道顺槽5内安装绞车6；
c、拆除采煤机7、第一架充填采煤液压支架8前的第一节刮板输送机9和第一节充填开采输送机10；
d、对第一架充填采煤液压支架8控顶范围进行临时支护，之后拆除第一架充填采煤液压支架8，从运煤顺槽11至轨道顺槽5方向经撤架轨道4运出；
e、依次对下一架充填采煤液压支架8、下一节刮板输送机9和下一节充填开采输送机10拆除、运出、支护，直至整个工作面的充填采煤液压支架拆除完毕；
f、同时对依次移除的充填采煤液压支架8、刮板输送机9和充填开采输送机10的空间顶板进行加强支护，形成人行通道14，加强支护的间排距L均为2.0m；
g、清理工作面内的其它剩余设备，在人行通道14内铺设注浆管路12，对该空间进行注浆，完成固体充填采煤液压支架撤架工作。
所述撤架通道3的宽度为3m～4m。
所述对第一架充填采煤液压支架8控顶范围进行临时支护的方式为单体支柱+“π”型钢梁。
所述加强支护的方式为打木垛13，采用胶带将木垛13封闭，然后采用喷浆机在木剁13内灌混凝土浆。
所述的木垛13尺寸为2.0m×2.0m。
所述注浆管路12位置在两排木垛(13)之间人行通道14内，从运煤顺槽11至轨道顺槽5方向共铺设三趟注浆管路12。
实施例1、以淮北矿业集团杨庄矿Ⅲ644工作面为例：
Ⅲ644工作面开采煤层为6#煤，煤厚平均2.7m，倾角平均18°，煤层结构简单，埋深为360m～515m；工作面走向长340m，倾斜宽110m，采用综合机械化固体充填开采；工作面收作眼断面为矩形：宽×高＝10.5m×2.8m，其长度为110m。采用固体充填采煤液压支架撤架方法步骤如下：
a、在充填采煤液压支架1前方煤体2开掘一条3m宽沿Ⅲ644工作面方向的撤架通 道3，并采用锚网索+单体支柱方式支护裸露顶板；
b、在撤架通道3内铺设撤架轨道4，并在Ⅲ644轨道顺槽5安装绞车6；
c、拆除采煤机7、第一架充填采煤液压支架8前的第一节刮板输送机9和第一节充填开采输送机10；
d、对第一架充填采煤液压支架8控顶范围采用单体支柱+“π”型钢梁进行临时支护，拆除第一架充填采煤液压支架8，从Ⅲ644运煤顺槽11至Ⅲ644轨道顺槽5方向经撤架轨道4运出；
e、对第一架充填采煤液压支架8移除后的空间顶板采用打两排木垛13，并采用胶带将木垛13封闭，然后采用喷浆机在木剁13内灌混凝土浆的方式进行加强支护，木垛(13)尺寸为2.0m×2.0m，其间排距L均为2.0m；
f、循环c、d和e过程，直至整个工作面的充填采煤液压支架拆除完毕；
g、清理工作面内的其它剩余设备，在整个拆除的Ⅲ644工作面收作眼空间内铺设注三趟浆管路12，分别位于收作眼上、中、下位置，对工作面收作眼进行注浆，从而对该空间上覆岩层形成一个永久支护。实现固体充填采煤工作面液压支架安全高效地撤架以及对工作面收作眼上覆岩层的移动和地表沉陷的有效控制。
a、在充填采煤液压支架(1)前方煤体(2)开掘一条沿工作面方向的撤架通道(3)，并采用锚网索+单体支柱方式支护裸露顶板；
b、在撤架通道(3)内铺设撤架轨道(4)，并在轨道顺槽(5)安装绞车(6)；
c、拆除采煤机(7)、第一架充填采煤液压支架(8)前的第一节刮板输送机(9)和第一节充填开采输送机(10)；
d、对第一架充填采煤液压支架(8)控顶范围进行临时支护，拆除第一架充填采煤液压支架(8)，从运煤顺槽(11)至轨道顺槽(5)方向经撤架轨道(4)运出；
e、对第一架充填采煤液压支架(8)移除后的空间顶板进行加强支护；
f、循环c、d和e过程，直至整个工作面的充填采煤液压支架拆除完毕；
g、清理工作面内的其它剩余设备，在整个拆除的工作面空间内铺设注浆管路(12)，对工作面收作眼空间进行注浆，完成固体充填采煤液压支架撤架工作。
所述的撤架通道(3)的宽度为3m～4m；第一架充填采煤液压支架(8)控顶范围临时支护的方式为单体支柱+“π”型钢梁；第一架充填采煤液压支架(8)移除后的空间顶板加强支护的方式为打木垛(13)，并采用胶带将木垛(13)封闭，然后采用喷浆机在木剁(13)内灌混凝土浆；木垛(13)尺寸为2.0m×2.0m，其间排距L均为2.0m；工作面收 作眼空间内铺设注浆管路(12)的位置在两排木垛之间的人行通道(14)内，从运煤顺槽(11)至轨道顺槽(5)方向共铺设有三趟注浆管路(12)，分别位于工作面收作眼上、中、下位置。

Claims (6)

  1. 一种固体充填采煤液压支架撤架方法，其特征在于，包括如下步骤：
    a、在充填采煤液压支架(1)前方煤体(2)开掘一条沿工作面方向的撤架通道(3)，并按常规的锚网索+单体支柱方式支护裸露顶板；
    b、在撤架通道(3)内铺设撤架轨道(4)，并在轨道顺槽(5)内安装绞车(6)；
    c、拆除采煤机(7)、第一架充填采煤液压支架(8)前的第一节刮板输送机(9)和第一节充填开采输送机(10)；
    d、对第一架充填采煤液压支架(8)控顶范围进行临时支护，之后拆除第一架充填采煤液压支架(8)，从撤架轨道(4)运出；
    e、依次对下一架充填采煤液压支架(8)、下一节刮板输送机(9)和下一节充填开采输送机(10)拆除、运出、支护，直至整个工作面的充填采煤液压支架拆除完毕；
    f、同时对依次移除的充填采煤液压支架(8)、刮板输送机(9)和充填开采输送机(10)的空间顶板进行加强支护，形成人行通道(14)，加强支护的间排距L均为2.0m；
    g、清理工作面内的其它剩余设备，在人行通道(14)内铺设注浆管路(12)，对该空间进行注浆，完成固体充填采煤液压支架撤架工作。
  2. 根据权利要求1所述的固体充填采煤液压支架撤架方法，其特征在于：所述撤架通道(3)的宽度为3m～4m。
  3. 根据权利要求1所述的固体充填采煤液压支架撤架方法，其特征在于：所述对第一架充填采煤液压支架(8)控顶范围进行临时支护的方式为单体支柱+“π”型钢梁。
  4. 根据权利要求1所述的固体充填采煤液压支架撤架方法，其特征在于：所述加强支护的方式为打木垛(13)，采用胶带将木垛(13)封闭，然后采用喷浆机在木剁(13)内灌混凝土浆。
  5. 根据权利要求4所述的固体充填采煤液压支架撤架方法，其特征在于：所述的木垛(13)尺寸为2.0m×2.0m。
  6. 根据权利要求1所述的固体充填采煤液压支架撤架方法，其特征在于：所述注浆管路(12)位置在两排木垛(13)之间人行通道(14)内，从运煤顺槽(11)至轨道顺槽(5)方向共铺设有三趟注浆管路(12)。
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