WO2017092577A1 - Method for monitoring pre-backfilling roof subsidence for use in fully mechanized solid-backfilling coal mining - Google Patents

Method for monitoring pre-backfilling roof subsidence for use in fully mechanized solid-backfilling coal mining Download PDF

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WO2017092577A1
WO2017092577A1 PCT/CN2016/106334 CN2016106334W WO2017092577A1 WO 2017092577 A1 WO2017092577 A1 WO 2017092577A1 CN 2016106334 W CN2016106334 W CN 2016106334W WO 2017092577 A1 WO2017092577 A1 WO 2017092577A1
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coal mining
hydraulic support
filling
solid
backfilling
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PCT/CN2016/106334
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French (fr)
Chinese (zh)
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张强
张吉雄
梅贤丞
孙强
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中国矿业大学
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Priority to CA2986142A priority Critical patent/CA2986142C/en
Priority to AU2016364117A priority patent/AU2016364117B2/en
Publication of WO2017092577A1 publication Critical patent/WO2017092577A1/en

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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01CMEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
    • G01C5/00Measuring height; Measuring distances transverse to line of sight; Levelling between separated points; Surveyors' levels
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01CMEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
    • G01C9/00Measuring inclination, e.g. by clinometers, by levels

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  • the invention relates to a method for monitoring the early sinking amount of a fully mechanized solid-filled coal mining roof, and is particularly suitable for monitoring the sinking amount of a roof in a comprehensive mechanized solid-filled coal mining in a mine.
  • the dynamic change of the roof in the comprehensive mechanized filling coal mining technology is the basic data that must be mastered. After the solid material is filled into the goaf, with the advancement of the working face, the dynamics of the roof can be grasped in time, which is beneficial to the analysis and control of the mining pressure law of solid filling coal mining, and is also beneficial to the detection of the filling process and the reaction filling effect. In order to ensure the good management of the top plate of the filling body. Therefore, it is of great significance to study an accurate and practical method for monitoring the amount of roof pre-sinking to ensure the filling effect of solid-filled coal mining technology at the coal mine site.
  • An object of the present invention is to provide a method for monitoring the amount of advance subsidence of a roof under the condition of integrated mechanized solid-filled coal mining technology.
  • the Pro/Engineer software is used to establish the solid simulation model to obtain the inclination-support height curve of the post after filling the hydraulic support of the coal mining;
  • the method for monitoring the early sinking amount of the solid-filled coal roof of the present invention is In actual application, it is only necessary to measure the inclination angle of the post-column after the hydraulic support of the coal-filled hydraulic support after filling the coal-filling hydraulic support in the filling operation cycle, and then according to the physical simulation model and the structural size parameters of the hydraulic support for filling the coal mining The geometric relationship between the structure and the structure is obtained by prematurely sinking the solid-filled coal roof.
  • the method for monitoring the amount of advance sinking of the top plate is simple and easy, low in cost, and has extensive field practicality.
  • FIG. 1 is a three-dimensional solid model diagram of a four-column filling coal mining hydraulic support according to an embodiment of the present invention
  • FIG. 2 is a two-dimensional skeleton model diagram of a four-column filling coal mining hydraulic support according to an embodiment of the present invention
  • FIG. 3 is a graph showing a tilt-support height curve of a post of a four-column filling coal mining hydraulic support according to an embodiment of the present invention
  • Figure 4 is a side view showing the state of the working face after the operation of filling the solid material in the first cycle operation at the beginning of the monitoring of the present invention
  • Figure 5 is a side view showing the state of the working face before the filling of the solid material in the second cycle operation at the beginning of the monitoring of the present invention
  • Fig. 6 is a simplified diagram showing the overlapping state of the hydraulic support for filling the coal in two cycle operations during the monitoring of the present invention.
  • 1-filled coal mining hydraulic support front roof beam 2-filled coal mining hydraulic support rear roof beam, 3-filled coal mining hydraulic support rear pillar, 4-porous bottom unloading conveyor, 5-fill coal mining hydraulic Top plate at the end of the rear beam of the bracket, 6-scraper conveyor, 7-filled coal mining hydraulic support, 8-filled coal mining hydraulic support base, 9-solid filling material, 10-solid coal wall.
  • the moving scraper conveyor is used to fill the coal mining face by using the shifting scraper conveyor 6, and the filling coal mining hydraulic support 7 is filled, and the solid material 9 is filled for filling to complete a cycle.
  • the operation as shown in Fig. 4, after the filling operation of the filled solid material 9 is completed, the inclination angle ⁇ 1 of the column 3 after the filling of the coal mining hydraulic support is measured to be 80.52°, according to the value of ⁇ 1 , the curve shown in Fig. 3 Available, the support height at this moment is 3200mm.

Abstract

Disclosed is a method for monitoring pre-backfilling roof subsidence for use in solid-backfilling coal mining, suitable for monitoring the amount of pre-backfilling subsidence of a roof on a working surface during a fully mechanized, underground solid-backfilling coal mining process. The method comprises employing Pro/Engineer to create a solid simulation model on the basis of the dimensional parameters of each of the structures of a hydraulic support for backfilling coal mining (7) and the geometrical relationships therebetween, and according to a change in inclination angle of a rear column (3) of the hydraulic support for backfilling coal mining (7) which is obtained by monitoring a backfilling coal mining cycle operation, finally obtaining the amount of pre-backfilling subsidence of the roof on the working surface of fully mechanized solid-backfilling coal mining.

Description

综合机械化固体充填采煤顶板提前下沉量监测方法Monitoring method for advanced subsidence of mechanized solid-filled coal mining roof 技术领域Technical field
本发明涉及一种综合机械化固体充填采煤顶板提前下沉量监测方法,尤其适用于井工矿综合机械化固体充填采煤中顶板下沉量的监测。The invention relates to a method for monitoring the early sinking amount of a fully mechanized solid-filled coal mining roof, and is particularly suitable for monitoring the sinking amount of a roof in a comprehensive mechanized solid-filled coal mining in a mine.
背景技术Background technique
综合机械化充填采煤技术中顶板的动态变化是必须掌握的基础数据。固体物料充入采空区后,随着工作面的推进,及时掌握顶板动态情况,既有利于分析掌握固体充填采煤的矿压显现规律,又有利于检测充填工艺的执行情况及反应充填效果,以保证充填体对顶板的良好管理。因此,研究出一种准确实用的顶板提前下沉量监测方法对于保证固体充填采煤技术在煤矿工程现场的充填效果具有重要意义。The dynamic change of the roof in the comprehensive mechanized filling coal mining technology is the basic data that must be mastered. After the solid material is filled into the goaf, with the advancement of the working face, the dynamics of the roof can be grasped in time, which is beneficial to the analysis and control of the mining pressure law of solid filling coal mining, and is also beneficial to the detection of the filling process and the reaction filling effect. In order to ensure the good management of the top plate of the filling body. Therefore, it is of great significance to study an accurate and practical method for monitoring the amount of roof pre-sinking to ensure the filling effect of solid-filled coal mining technology at the coal mine site.
发明内容Summary of the invention
技术问题:本发明的目的是提供一种综合机械化固体充填采煤技术条件下的顶板提前下沉量的监测方法。Technical Problem: An object of the present invention is to provide a method for monitoring the amount of advance subsidence of a roof under the condition of integrated mechanized solid-filled coal mining technology.
技术方案:本发明的综合机械化固体充填采煤顶板提前下沉量监测方法;Technical solution: the method for monitoring the early sinking amount of the integrated mechanized solid-filled coal mining roof according to the present invention;
(1)根据充填采煤液压支架三维实体模型以及模型各个部位结构的尺寸参数,利用Pro/Engineer软件建立实体仿真模型,得到充填采煤液压支架后立柱倾角-支撑高度曲线;(1) According to the three-dimensional solid model of the hydraulic support of the coal mining and the dimensional parameters of the structure of each part of the model, the Pro/Engineer software is used to establish the solid simulation model to obtain the inclination-support height curve of the post after filling the hydraulic support of the coal mining;
(2)在常规充填采煤循环作业中,进行充填采煤工作面割煤、推移刮板输送机、推移充填采煤液压支架、充填固体物料作业,完成一个循环作业,当充填固体物料作业结束后,测出此刻充填采煤液压支架后立柱倾角α1(2) In the conventional filling coal mining cycle operation, the coal mining face is cut, the scraper conveyor is moved, the hydraulic support of the coal mining is filled, and the solid material is filled to complete a cycle operation, when the operation of filling the solid material ends After that, the inclination angle α 1 of the column after filling the coal mining hydraulic support at the moment is measured;
(3)开始第二个循环作业,当第二个循环作业进行到推移充填采煤液压支架作业结束后,充填固体物料作业开始前,再次测出此刻充填采煤液压支架后立柱倾角α2(3) Start the second cycle operation. When the second cycle operation is completed and the filling of the coal mining hydraulic support is completed, before the start of the filling of the solid material, the inclination angle α 2 of the column after filling the coal mining hydraulic support is measured again.
(4)在两次监测出的充填采煤液压支架后立柱倾角的基础上,根据Pro/Engineer软件建立的实体仿真模型得出充填采煤液压支架后立柱倾角-支撑高度曲线,得到两次监测充填采煤液压支架后立柱倾角时的支撑高度差Δl;(4) Based on the tilt angle of the post-column hydraulic support after two monitoring, according to the solid simulation model established by Pro/Engineer software, the inclination-support height curve of the post-column hydraulic support is obtained, and two monitoring results are obtained. Supporting height difference Δl when filling the inclined position of the pillar after the coal mining hydraulic support;
(5)将充填采煤液压支架简化成几何图形,并把两个位置的充填采煤液压支架重叠起来,并且理想化地将两个时期的充填采煤液压支架的后顶梁以及顶板提前下沉段连接而成的三角形作为相似三角形进行处理,即
Figure PCTCN2016106334-appb-000001
从而得到充填采煤液压支架后顶梁的断点处的顶板提前下沉量,即
Figure PCTCN2016106334-appb-000002
(5) Simplify the filling of the coal mining hydraulic support into a geometric figure, and overlap the two-position filling coal mining hydraulic support, and ideally advance the rear roof beam and the top plate of the two-stage filling coal mining hydraulic support. The triangles connected by the sinking segments are treated as similar triangles, ie
Figure PCTCN2016106334-appb-000001
Therefore, the amount of advancement of the roof at the break point of the top beam of the hydraulic support after filling the coal mining hydraulic support is obtained, that is,
Figure PCTCN2016106334-appb-000002
有益效果:由于采用了上述方案,本发明的固体充填采煤顶板提前下沉量监测方法,在 实际运用时只需要测量出每次充填采煤作业循环中推移液充填采煤液压支架后的充填采煤液压支架后立柱的倾角,便可以根据实体仿真模型以及充填采煤液压支架各个结构尺寸参数和结构之间的几何关系得到固体充填采煤顶板提前下沉量。此顶板提前下沉量监测方法简单易行,成本低,具有广泛的现场实用性。Advantageous Effects: According to the above scheme, the method for monitoring the early sinking amount of the solid-filled coal roof of the present invention is In actual application, it is only necessary to measure the inclination angle of the post-column after the hydraulic support of the coal-filled hydraulic support after filling the coal-filling hydraulic support in the filling operation cycle, and then according to the physical simulation model and the structural size parameters of the hydraulic support for filling the coal mining The geometric relationship between the structure and the structure is obtained by prematurely sinking the solid-filled coal roof. The method for monitoring the amount of advance sinking of the top plate is simple and easy, low in cost, and has extensive field practicality.
附图说明DRAWINGS
图1为本发明具体实施方式中四柱式充填采煤液压支架三维实体模型图;1 is a three-dimensional solid model diagram of a four-column filling coal mining hydraulic support according to an embodiment of the present invention;
图2为本发明具体实施方式中四柱式充填采煤液压支架二维骨架模型图;2 is a two-dimensional skeleton model diagram of a four-column filling coal mining hydraulic support according to an embodiment of the present invention;
图3为本发明具体实施方式中四柱式充填采煤液压支架后立柱倾角-支撑高度曲线图;3 is a graph showing a tilt-support height curve of a post of a four-column filling coal mining hydraulic support according to an embodiment of the present invention;
图4为本发明开始监测时第一个循环作业中充填固体物料作业后工作面状态侧视图;Figure 4 is a side view showing the state of the working face after the operation of filling the solid material in the first cycle operation at the beginning of the monitoring of the present invention;
图5为本发明开始监测时第二个循环作业中充填固体物料作业前工作面状态侧视图;Figure 5 is a side view showing the state of the working face before the filling of the solid material in the second cycle operation at the beginning of the monitoring of the present invention;
图6为本发明监测时两个循环作业中充填采煤液压支架重叠状态简化图。Fig. 6 is a simplified diagram showing the overlapping state of the hydraulic support for filling the coal in two cycle operations during the monitoring of the present invention.
图中:1-充填采煤液压支架前顶梁,2-充填采煤液压支架后顶梁,3-充填采煤液压支架后立柱,4-多孔底卸式输送机,5-充填采煤液压支架后顶梁端点处顶板,6-刮板输送机,7-充填采煤液压支架,8-充填采煤液压支架底座,9-固体充填物料,10-实体煤壁。In the picture: 1-filled coal mining hydraulic support front roof beam, 2-filled coal mining hydraulic support rear roof beam, 3-filled coal mining hydraulic support rear pillar, 4-porous bottom unloading conveyor, 5-fill coal mining hydraulic Top plate at the end of the rear beam of the bracket, 6-scraper conveyor, 7-filled coal mining hydraulic support, 8-filled coal mining hydraulic support base, 9-solid filling material, 10-solid coal wall.
具体实施方式detailed description
下面结合附图中的实施例对本发明作进一步的描述:The present invention will be further described below in conjunction with the embodiments in the drawings:
以ZC5200/20/38型四柱式充填采煤液压支架为例,对本发明的固体充填采煤顶板提前下沉量监测方法进行详细描述:Taking the ZC5200/20/38 four-column filling coal mining hydraulic support as an example, the method for monitoring the early sinking amount of the solid-filled coal mining roof of the present invention is described in detail:
(1)首先按已有技术在采煤工作面实体煤壁布置综合设备,根据充填采煤液压支架三维实体模型,如图1所示,以及各个结构的尺寸参数,利用Pro/Engineer软件建立如图2所示的二维骨架模型,最后得到如图3所示的充填采煤液压支架后立柱3倾角-支撑高度曲线;(1) Firstly, the integrated equipment of the solid coal wall in the coal mining face is arranged according to the prior art, according to the three-dimensional solid model of the hydraulic support for filling coal, as shown in Figure 1, and the dimensional parameters of each structure, using Pro/Engineer software to establish The two-dimensional skeleton model shown in Fig. 2 finally obtains the inclination-support height curve of the pillar 3 after filling the coal mining hydraulic support as shown in Fig. 3;
(2)在已有技术的常规充填采煤循环作业中,采用推移刮板输送机6、推移充填采煤液压支架7进行充填采煤工作面割煤,充填固体物料9进行充填,完成一个循环作业,如图4所示,当充填固体物料9充填作业结束后,测出此刻充填采煤液压支架后立柱3的倾角α1为80.52°,根据α1的值,由图3所示的曲线可得,此刻的支撑高度为3200mm。(2) In the conventional filling coal mining cycle operation of the prior art, the moving scraper conveyor is used to fill the coal mining face by using the shifting scraper conveyor 6, and the filling coal mining hydraulic support 7 is filled, and the solid material 9 is filled for filling to complete a cycle. The operation, as shown in Fig. 4, after the filling operation of the filled solid material 9 is completed, the inclination angle α 1 of the column 3 after the filling of the coal mining hydraulic support is measured to be 80.52°, according to the value of α 1 , the curve shown in Fig. 3 Available, the support height at this moment is 3200mm.
(3)完成一个充填采煤循环作业后,开始第二个充填采煤循环作业,当在第二个循环作业中,充填采煤液压支架7向前推移一个步距600mm之后,充填固体物料9充填作业开始前,如图5所示的位置,再次测出此刻充填采煤液压支架后立柱3的倾角α2为79.59°,根据α2的值,由图3所示的曲线可得,此时支撑高度为3000mm; (3) After completing a filling coal mining cycle operation, start the second filling coal mining cycle operation. In the second cycle operation, after filling the coal mining hydraulic support 7 forward by a step distance of 600 mm, the solid material is filled 9 Before the start of the filling operation, as shown in Fig. 5, it is again measured that the inclination angle α 2 of the column 3 after filling the coal mining hydraulic support is 79.59°, which is obtained from the curve shown in Fig. 3 according to the value of α 2 . The support height is 3000mm;
(4)在两次测出充填采煤液压支架后立柱3倾角的基础上,根据Pro/Engineer软件建立的实体仿真模型得出的充填采煤液压支架后立柱3倾角-支撑高度曲线,得到两次监测充填采煤液压支架后立柱倾角时的支撑高度差Δl;(4) On the basis of measuring the inclination of the column 3 after filling the hydraulic support of the coal mining, according to the solid simulation model established by Pro/Engineer software, the inclination-support height curve of the post 3 of the hydraulic support after filling the coal mining is obtained. Monitoring the difference in support height Δl when the inclined angle of the column is filled after the hydraulic support of the coal mining;
(5)将两个位置的充填采煤液压支架7重叠起来,其中l2段为充填采煤液压支架7推移一个步距的距离600mm,如图6所示,可以理想化地将两个重叠起来的充填采煤液压支架7所构成的三角形作为相似三角形进行处理,即,
Figure PCTCN2016106334-appb-000003
因此,充填采煤液压支架后顶梁2的端点处的顶板提前下沉量Sd可按下式计算得出:
(5) The two positions of the filling coal mining hydraulic support 7 are overlapped, wherein the l 2 section is filled with the coal mining hydraulic support 7 and the distance of a step is 600 mm, as shown in Fig. 6, two overlapping can be ideally The triangle formed by the filled coal mining hydraulic support 7 is treated as a similar triangle, that is,
Figure PCTCN2016106334-appb-000003
Therefore, the amount of advance sinking S d at the end of the top beam 2 after filling the coal mining hydraulic support can be calculated as follows:
Figure PCTCN2016106334-appb-000004
Figure PCTCN2016106334-appb-000004
式中:In the formula:
Sd—充填采煤液压支架后顶梁的端点处的顶板提前下沉量,mm;S d — the amount of advancement of the top plate at the end of the top beam after filling the hydraulic support of the coal mining, mm;
Δl—两次监测充填采煤液压支架后立柱的倾角时的支撑高度差,200mm;Δl—two times to monitor the difference in support height when the inclination of the column is filled after the hydraulic support of the coal mining, 200 mm;
l1—充填采煤液压支架后顶梁的长度,4462mm;l 1 —the length of the top beam after filling the coal mining hydraulic support, 4462mm;
l2—推移一个充填采煤液压支架的步距距离,600mm;l 2 —the step distance of a hydraulic support for filling coal mining, 600mm;
l3—后顶梁与四连杆机构的铰接点到后顶梁与后立柱铰接点的水平距离,1550mm。 l 3 — The horizontal distance from the hinge point of the rear top beam to the four-bar linkage to the hinge point of the rear top beam and the rear column, 1550 mm.

Claims (1)

  1. 一种综合机械化固体充填采煤顶板提前下沉量监测方法,其特征在于包括如下步骤:The invention discloses a method for monitoring the early sinking amount of a comprehensive mechanized solid-filled coal mining roof, which comprises the following steps:
    (1)根据充填采煤液压支架三维实体模型以及模型各个部位结构的尺寸参数,利用Pro/Engineer软件建立实体仿真模型,得到充填采煤液压支架后立柱(3)倾角-支撑高度曲线;(1) According to the three-dimensional solid model of the hydraulic support of the coal mining and the dimensional parameters of the structure of each part of the model, the Pro/Engineer software is used to establish the solid simulation model to obtain the inclination-support height curve of the post (3) after filling the hydraulic support of the coal mining;
    (2)在常规的充填采煤循环作业中,进行充填采煤工作面割煤、推移刮板输送机(6)、推移充填采煤液压支架(7)、充填固体物料(9)作业,完成一个循环作业,当充填固体物料(9)作业结束后,测出此刻充填采煤液压支架后立柱(3)倾角α1(2) In the conventional filling coal mining cycle operation, the coal mining face is cut, the scraper conveyor (6) is moved, the hydraulic support (7) is filled, and the solid material (9) is filled. A cycle operation, when the operation of filling the solid material (9) is completed, the inclination angle α 1 of the column (3) after filling the coal mining hydraulic support at the moment is measured;
    (3)开始第二个循环作业,当第二个循环作业进行到推移充填采煤液压支架(7)作业结束后,充填固体物料(9)作业开始前,再次测出此刻充填采煤液压支架后立柱(3)倾角α2(3) Start the second cycle operation. When the second cycle operation is completed and the filling of the coal mining hydraulic support (7) is completed, before the start of the operation of filling the solid material (9), the hydraulic support for filling the coal at the moment is again measured. Rear column (3) inclination angle α 2 ;
    (4)在两次循环作业监测出的充填采煤液压支架后立柱(3)倾角的基础上,根据Pro/Engineer软件建立的实体仿真模型得出充填采煤液压支架后立柱(3)倾角-支撑高度曲线,得到两次监测充填采煤液压支架后立柱倾角时的支撑高度差Δl;(4) Based on the tilt angle of the post (3) after the hydraulic support of the coal mining machine monitored by the two-cycle operation, according to the solid simulation model established by Pro/Engineer software, the tilting angle of the post (3) after filling the coal mining hydraulic support is obtained. Supporting the height curve, obtaining the support height difference Δl when the inclination of the column after the hydraulic support of the coal mining is filled twice;
    (5)将充填采煤液压支架简化成几何图形,并把两个位置的充填采煤液压支架(7)重叠起来,并且理想化地将两个时期的充填采煤液压支架的后顶梁以及顶板提前下沉段连接而成的三角形作为相似三角形进行处理,即
    Figure PCTCN2016106334-appb-100001
    从而得到充填采煤液压支架后顶梁的断点处的顶板提前下沉量,即
    Figure PCTCN2016106334-appb-100002
    (5) Simplify the filling of the coal mining hydraulic support into a geometric figure, and overlap the two-position filling coal mining hydraulic support (7), and ideally fill the rear roof beam of the coal mining hydraulic support for two periods and The triangle in which the top plate is connected to the sinking section in advance is treated as a similar triangle, that is,
    Figure PCTCN2016106334-appb-100001
    Therefore, the amount of advancement of the roof at the break point of the top beam of the hydraulic support after filling the coal mining hydraulic support is obtained, that is,
    Figure PCTCN2016106334-appb-100002
PCT/CN2016/106334 2015-12-01 2016-11-18 Method for monitoring pre-backfilling roof subsidence for use in fully mechanized solid-backfilling coal mining WO2017092577A1 (en)

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