WO2019174188A1 - 一种近水平煤层巷式胶结充填方法 - Google Patents

一种近水平煤层巷式胶结充填方法 Download PDF

Info

Publication number
WO2019174188A1
WO2019174188A1 PCT/CN2018/102418 CN2018102418W WO2019174188A1 WO 2019174188 A1 WO2019174188 A1 WO 2019174188A1 CN 2018102418 W CN2018102418 W CN 2018102418W WO 2019174188 A1 WO2019174188 A1 WO 2019174188A1
Authority
WO
WIPO (PCT)
Prior art keywords
filling
roadway
coal seam
cementing
sealing
Prior art date
Application number
PCT/CN2018/102418
Other languages
English (en)
French (fr)
Inventor
周楠
闫浩
刘恒凤
张升
李猛
Original Assignee
中国矿业大学
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 中国矿业大学 filed Critical 中国矿业大学
Publication of WO2019174188A1 publication Critical patent/WO2019174188A1/zh

Links

Images

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH 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
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH 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
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
    • E21F17/00—Methods or devices for use in mines or tunnels, not covered elsewhere
    • E21F17/02—Suspension devices for tubes or the like, e.g. for ventilating ducts

Definitions

  • the invention relates to a roadway cementing filling method for coal mines, and is particularly suitable for the recycling process of coal pillars in near-horizontal coal seam type cementing filling mining.
  • China's western coal resources are abundant, and small and medium-sized coal mines in the western mining area occupy a considerable proportion.
  • Small and medium-sized coal mines use roadway mining methods due to factors such as their own mining technology and backward mining equipment, resulting in a large number of strip coal pillars left in the goaf.
  • the roadway cementation filling coal mining technology has been widely used in such coal mines.
  • the traditional roadway cementation filling coal mining technology is generally applied to the inclined coal seam, and the application effect in the near horizontal coal seam is not good. Due to the small inclination of the near horizontal coal seam, the cemented filling material is difficult to fill the goaf in the case of self-flowing, and it is impossible to achieve effective roofing. At the same time, due to the bleeding shrinkage of the colloidal filling material, the filling density in the near horizontal coal seam is not high. It is unable to effectively control rock movement and surface subsidence. How to improve the topping rate in the near horizontal coal seam type cementing filling process has become a major problem to be solved.
  • the object of the present invention is to provide a near horizontal coal seam type cementing filling method, which can further improve the roofing rate of the filling material in the near horizontal coal seam type cementing filling and better control the overlying rock movement.
  • a near-horizontal coal seam type cementation filling method which uses a tunnel mining technology to mine a near horizontal coal seam to form a filling roadway, and fills a pipeline hole in the roof of the filling roadway, a filling pipe is disposed in the filling pipeline hole;
  • a sealing retaining wall is constructed at the end of the filling roadway and inside, and the filling roadway is divided into several filling and sealing spaces, and at the middle of each filling sealing space a top chamber is drilled at the top plate, and the filling pipe hole is penetrated, and a ventilation pipe is arranged along the top plate of the filling roadway, and the top portion of the top chamber is arranged with a downwardly curved nozzle of the filling pipe and an upwardly curved a nozzle of the ventilation pipe; filling the filling roadway by a cement filling technique, and the adjacent three filling roadways are a group, and sequentially filling each filling sealing space in the three filling roadways
  • the path of the filling pipeline hole is an inclined section on the side of the return roadway of the filling roadway, and the length of the specific inclined section is determined by the width of the return airway, the pressure in the filling pipe, and the cement filling material. The characteristics of the self and the spacing between the filling pipe hole and the coal seam are determined.
  • one end of the ventilation tube is disposed at a lower position of the top chamber, and the level of the aperture is lower than the level of the opening of the filling tube.
  • the filling and sealing space 1-1 in the filling roadway is cemented and filled, and the cementing filling material is transported along the filling pipe through the top diverting chamber to the filling and sealing space 1-1, and the filling operation is indicated when the colloidal filling material flows out in the ventilation pipe.
  • the filling operation spaces 2-1 and 3-1 are sequentially filled.
  • the invention is applied in the near horizontal coal seam type cementing filling process, and the filling filling pipe is arranged in the top plate, and the filling roadway section is subjected to multiple cementing filling operations, which can greatly improve the filling and topping rate of the near horizontal coal seam, and is effective It alleviates the problems that the filling body of the colloidal filling material cannot be connected due to the shrinkage of the bleeding water, and the filling density is not high.
  • the whole filling method is convenient, safe, reliable and adaptable, and has wide adaptability and field applicability in near-level coal seam type cementing filling.
  • FIG. 1 is a schematic front view showing the structure of a near horizontal coal seam type cementation filling method
  • FIG. 2 is a schematic plan view showing a structure of a near horizontal coal seam type cementation filling method
  • Figure 3 is a cross-sectional view of the I-I of the front view of the structure of the near horizontal coal seam type cementation filling method
  • a near-horizontal coal seam type cementation filling method uses coal mining technology to form a filling roadway 3 in a near-horizontal coal seam, and is constructed at a certain distance between the two ends of the filling roadway and the filling roadway 3.
  • the retaining wall 4 is sealed, so that the filling roadway 3 is divided into three sections to fill the sealed space 5.
  • a filling pipe hole 7 is drilled in the top of the filling roadway 6 to fill the filling space 5, and a filling pipe 8 is installed in the filling pipe hole 7.
  • the top chamber 9 is cut at the top plate 6 which is filled in the intermediate position of the sealed space 5, and the nozzle of the filling tube 8 is disposed at an upper position of the top chamber 9 and is bent downward.
  • a small hole is left in the sealing retaining wall 4 near the top plate, from which the venting pipe 10 is arranged along the top plate to the top sill chamber 9, and the nozzle of the venting pipe 10 is deflected at the top venting chamber 9 and bent upward.
  • the filling tube 8 in the top chamber 9 has a higher level than the vent tube 1.
  • Each of the three adjacent filling roadways 3 is a group during the filling operation, firstly, the filling filling space 1-1 in the lane is cemented and filled, and the cementing filling material flows along the filling pipe 8 through the top chamber 9 to the filling and sealing space 1-1.
  • the cement filling material flows out of the ventilation pipe 10
  • the filling is completed, and then the sealing space 2-1, 3-1 in the lane is successively cemented and filled.
  • the sealing space 1-2, 2-2, 3-2, 1-3, 2-3, 3-3 is filled until the filling operation of three adjacent filling lanes 3 is completed.

Abstract

一种近水平煤层巷式胶结充填方法，利用巷采技术开采近水平煤层后形成充填巷道（3），在所述充填巷道（3）顶板中开凿充填管路孔（7），充填管（8）布置在所述充填管路孔（7）中；在所述充填巷道（3）端头及内部施工密封挡墙（4），将所述充填巷道（3）分成几段充填密封空间，同时在所述每段充填密封空间中间位置的顶板处开凿顶部硐室（9），与所述充填管路孔（7）贯通，同时沿所述充填巷道（3）顶板布置通风管（10），利用胶结充填技术充填所述充填巷道（3），相邻的所述三条充填巷道（3）为一组，依次充填所述三条充填巷道（3）内的每段充填密封空间至密实接顶，直至完成所述整组充填巷道（3）的胶结充填作业，该方法适用于近水平煤层的胶结充填开采，具有胶体充填体接顶距小、密实度高等优点，具有广泛的应用前景。

Description

一种近水平煤层巷式胶结充填方法 技术领域
本发明涉及煤矿一种巷式胶结充填方法，尤其适用于近水平煤层巷式胶结充填开采煤柱的回收过程中。
背景技术
我国西部煤炭资源丰富，西部矿区中小煤矿占据相当大比重，中小煤矿因自身开采技术与开采设备落后等因素，多采用巷道式开采方法，造成了采空区遗留大量条带煤柱。为避免巷式遗留煤柱的极大浪费以及采空区煤柱失稳造成的矿震、地表沉陷等灾害，巷式胶结充填采煤技术在该类煤矿中得到了广泛应用。
传统巷式胶结充填采煤技术一般应用于倾斜煤层中，在近水平煤层中应用效果不好。由于近水平煤层的倾角小，胶结充填物料难以在自流的情况下充满采空区，无法做到有效接顶，同时由于胶体充填物料泌水收缩等原因，近水平煤层中的充填密实度不高，无法有效控制岩层移动与地表沉陷。如何在近水平煤层巷式胶结充填过程中提高接顶率成为亟需解决的一大难题。
发明内容
发明目的：本发明的目的是提供一种近水平煤层巷式胶结充填方法，以进一步提高近水平煤层巷式胶结充填时充填物料的接顶率、更好地控制覆岩移动。
为了实现上述目的，本发明采用了如下技术方案：一种近水平煤层巷式胶结充填方法，利用巷采技术开采近水平煤层后形成充填巷道，在所述充填巷道顶板中开凿充填管路孔，充填管布置在所述充填管路孔中；在所述充填巷道端头及内部施工密封挡墙，将所述充填巷道分成几段充填密封空间，同时在所述每段充填密封空间中间位置的顶板处开凿顶部硐室，与所述充填管路孔贯通，同时沿所述充填巷道顶板布置通风管，所述顶部硐室内部布置有向下弯曲的所述充填管的管口与向上弯曲的所述通风管的管口；利用胶结充填技术充填所述充填巷道，相邻的所述三条充填巷道为一组，依次充填所述三条充填巷道内的每段充填密封空间至密实接顶，直至完成所述整组充填巷道的胶结充填作业。
本发明中，可选的，所述充填管路孔的路径在充填巷道回风平巷一侧为倾斜段，其具体倾斜段长度由回风平巷的宽度、充填管内的压强、胶结充填材料自身特性以及充填管路孔与煤层的间距等因素决定。
本发明中，可选的，所述通风管一端布置在顶部硐室偏下位置，其孔口的水平高度低于充填管孔口的水平高度。
本发明中，可选的，所述整组充填巷道的胶结充填作业：
a.首先对充填巷道内的充填密封空间1-1进行胶结充填，胶结充填物料沿充填管经 顶部硐室输送至充填密封空间1-1，当所述通风管内流出胶体充填物料时表示充填作业完成，再依次对充填密封空间2-1、3-1进行充填作业。
b.重复a工艺对充填密封空间1-1、2-1、3-1再依次充填2遍，每个充填密封空间总共充填3遍。
c.重复a、b工艺对充填密封空间1-2、2-2、3-2；1-3、2-3、3-3进行充填作业，直至完成整组充填巷道的胶结充填作业。
有益效果：本发明应用在近水平煤层巷式胶结充填过程中，通过将充填管布置在顶板中，充填巷道分段进行多次胶结充填作业，可以大大提高近水平煤层的充填接顶率，有效缓解了胶体充填物料因泌水收缩而导致的充填体无法接顶、充填密实度不高等问题。整个充填方法使用方便、安全可靠、适应性强，在近水平煤层巷式胶结充填中具有广泛的适应性和现场应用性。
附图说明
图1是近水平煤层巷式胶结充填方法的结构示意图正视图；
图2是近水平煤层巷式胶结充填方法的结构示意图俯视图；
图3是近水平煤层巷式胶结充填方法的结构示意图正视图的I—I剖面图；
图中：1-回风平巷，2-运输平巷，3-充填巷道，4-密封挡墙，5-充填密闭空间，6-顶板，7-充填管路孔，8-充填管，9-顶部硐室，10-通风管。
具体实施方式：
下面结合附图对本发明做更进一步的解释。
如图1至3所示，一种近水平煤层巷式胶结充填方法，在近水平煤层中利用巷采技术采煤形成充填巷道3，在充填巷道两端头以及充填巷道3内间隔一定距离施工密封挡墙4，从而将充填巷道3分成三段巷内充填密封空间5。自回风平巷1一侧，在充填巷道顶板6中开凿充填管路孔7至充填密封空间5上方，并在充填管路孔7内安装充填管8。在充填密封空间5中间位置的顶板6处开凿顶部硐室9，充填管8的管口布置在顶部硐室9的偏上位置处并向下弯曲。在密封挡墙4靠近顶板处留设一小孔，从该孔沿顶板布置通风管10至顶部硐室9，通风管10的管口在顶部硐室9偏下位置并向上弯曲。顶部硐室9内充填管8管口水平高度高于通风管1。
进行充填作业时每三条相邻充填巷道3为一组，首先对巷内充填密封空间1-1进行胶结充填，胶结充填物料沿充填管8经由顶部硐室9流至充填密封空间1-1内，当通风管10内流出胶结充填物料时表示充填完成，再依次对巷内充填密封空间2-1、3-1进行胶结充填。重复以上工艺对充填密封空间1-1、2-1、3-1再进行两次胶结充填，使三条巷内的充填密封空间5内的充填体密实接顶，重复以上充填步骤对巷内充填密封空间1-2、2-2、3-2、1-3，2-3，3-3进行充填作业，直至完成三条相邻充填巷道3的充填作业。
本发明应用了具体个例对本发明的原理及实施方式进行了阐述，以上实施例的说明只是用于帮助理解本发明的方法及其核心思想；同时，对于本领域的一般技术人员，依据本发明的思想，在具体实施方式及应用范围上均会有改变之处。综上，本说明书内容不应理解为对本发明的限制。

Claims (2)

  1. 一种近水平煤层巷式胶结充填方法，其特征在于：利用巷采技术开采近水平煤层后形成充填巷道，在所述充填巷道顶板中开凿充填管路孔，充填管布置在所述充填管路孔中；在所述充填巷道端头及内部施工密封挡墙，将所述充填巷道分成几段充填密封空间，同时在所述每段充填密封空间中间位置的顶板处开凿顶部硐室，与所述充填管路孔贯通，同时沿所述充填巷道顶板布置通风管，所述顶部硐室内部布置有向下弯曲的所述充填管的管口与向上弯曲的所述通风管的管口；利用胶结充填技术充填所述充填巷道，相邻的所述三条充填巷道为一组，依次充填所述三条充填巷道内的每段充填密封空间至密实接顶，直至完成所述整组充填巷道的胶结充填作业。
  2. 根据权利要求1所述的一种近水平煤层巷式胶结充填方法，其特征在于：所述相邻三条充填巷道的充填流程：
    a.首先对所述充填密封空间1-1进行充填，胶结充填物料沿所述充填管由所述顶部硐室流至所述充填密封空间1-1，当所述通风管的管口流出胶体充填物料时表示充填完成，再依次对所述充填密封空间2-1、3-1进行充填。
    b.重复a工艺对所述充填密封空间1-1、2-1、3-1再依次充填2遍
    c.重复a、b工艺对所述充填密封空间1-2、2-2、3-2；1-3，2-3，3-3进行充填作业，直至完成所述相邻三条充填巷道的胶结充填作业。
PCT/CN2018/102418 2018-03-12 2018-08-27 一种近水平煤层巷式胶结充填方法 WO2019174188A1 (zh)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201810200934.8A CN108468564B (zh) 2018-03-12 2018-03-12 一种近水平煤层巷式胶结充填方法
CN201810200934.8 2018-03-12

Publications (1)

Publication Number Publication Date
WO2019174188A1 true WO2019174188A1 (zh) 2019-09-19

Family

ID=63265135

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2018/102418 WO2019174188A1 (zh) 2018-03-12 2018-08-27 一种近水平煤层巷式胶结充填方法

Country Status (2)

Country Link
CN (1) CN108468564B (zh)
WO (1) WO2019174188A1 (zh)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114961844A (zh) * 2022-06-17 2022-08-30 中南大学 一种提高大断面进路充填采矿效率及接顶率的方法

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108468564B (zh) * 2018-03-12 2020-07-17 中国矿业大学 一种近水平煤层巷式胶结充填方法
CN109882173A (zh) * 2019-04-30 2019-06-14 长沙有色冶金设计研究院有限公司 厚大矿体沿垂直方向两步骤回采采场充填系统及充填方法
CN112253115B (zh) * 2020-10-14 2023-06-16 中国矿业大学(北京) 近水平煤层巷式胶结充填开采方法
CN117514329B (zh) * 2024-01-05 2024-03-19 中煤科工能源科技发展有限公司 一种采硐充填方法

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU756043A1 (ru) * 1978-07-04 1980-08-15 Inst Gornogo Dela An Kazakhsk Способ закладки выработанного пространства 1
US4463807A (en) * 1981-06-15 1984-08-07 In Situ Technology, Inc. Minimizing subsidence effects during production of coal in situ
FR2573475B1 (fr) * 1984-11-16 1987-10-16 Soletanche Nouveau procede pour l'exploitation de gisements de minerais
CN103046955A (zh) * 2012-12-24 2013-04-17 河北钢铁集团矿业有限公司 一种大范围采空区群充填处理方法
CN103527200A (zh) * 2013-10-25 2014-01-22 河北省矾山磷矿有限公司 无底柱分段菱形矿房嗣后充填采矿法
CN104532818A (zh) * 2014-12-02 2015-04-22 辽宁工程技术大学 一种露天矿采空区的治理方法
CN106050300A (zh) * 2016-07-07 2016-10-26 山东黄金矿业(莱州)有限公司焦家金矿 一种用于上向进路超高欠采的充填接顶方法
CN108468564A (zh) * 2018-03-12 2018-08-31 中国矿业大学 一种近水平煤层巷式胶结充填方法

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103758567B (zh) * 2014-01-26 2016-02-03 山东科技大学 一种破碎顶板冒落区注浆充填方法
CN103821558B (zh) * 2014-02-14 2016-02-24 安徽理工大学 煤矿采空区充填采矿及沿空留巷充填工艺
CN103821515B (zh) * 2014-02-20 2016-05-04 山西晋煤集团技术研究院有限责任公司 一种对拉工作面充填采煤工艺
CN104453904B (zh) * 2014-11-24 2017-01-11 西北矿冶研究院 免拉槽分段充填采矿法
CN204716289U (zh) * 2015-06-29 2015-10-21 云南驰宏锌锗股份有限公司 一种封闭隔墙内充填接顶的现场控制装置

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU756043A1 (ru) * 1978-07-04 1980-08-15 Inst Gornogo Dela An Kazakhsk Способ закладки выработанного пространства 1
US4463807A (en) * 1981-06-15 1984-08-07 In Situ Technology, Inc. Minimizing subsidence effects during production of coal in situ
FR2573475B1 (fr) * 1984-11-16 1987-10-16 Soletanche Nouveau procede pour l'exploitation de gisements de minerais
CN103046955A (zh) * 2012-12-24 2013-04-17 河北钢铁集团矿业有限公司 一种大范围采空区群充填处理方法
CN103527200A (zh) * 2013-10-25 2014-01-22 河北省矾山磷矿有限公司 无底柱分段菱形矿房嗣后充填采矿法
CN104532818A (zh) * 2014-12-02 2015-04-22 辽宁工程技术大学 一种露天矿采空区的治理方法
CN106050300A (zh) * 2016-07-07 2016-10-26 山东黄金矿业(莱州)有限公司焦家金矿 一种用于上向进路超高欠采的充填接顶方法
CN108468564A (zh) * 2018-03-12 2018-08-31 中国矿业大学 一种近水平煤层巷式胶结充填方法

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114961844A (zh) * 2022-06-17 2022-08-30 中南大学 一种提高大断面进路充填采矿效率及接顶率的方法

Also Published As

Publication number Publication date
CN108468564A (zh) 2018-08-31
CN108468564B (zh) 2020-07-17

Similar Documents

Publication Publication Date Title
WO2019174188A1 (zh) 一种近水平煤层巷式胶结充填方法
WO2018171254A1 (zh) 一种煤层采场优势瓦斯运移通道阶梯式构建方法
CN105240014B (zh) 一种充填再造护巷煤柱条带回收房式遗留煤柱的方法
CN106351662B (zh) 分隔式分段注浆加固方法、施工方法及应用
CN104989339B (zh) 一种老空区抽采煤层气的系统及方法
CN104131831A (zh) 一种煤层气井上下立体联合抽采方法
WO2019218546A1 (zh) 一种倾斜中厚矿体的采矿方法
WO2017101634A1 (zh) 综采-充填混合开采工作面充填段长度确定方法
CN112096449B (zh) 一种煤矿采空区膏体条带注浆组合充填开采方法
CN106917627B (zh) 一种富水地层暗挖施工下导洞的超前支护方法
CN106223897B (zh) 一种综采工作面破碎煤岩深孔分段注浆方法
CN108104865B (zh) 一种顺层钻孔防漏风瓦斯抽采方法
CN113279811B (zh) 一种特厚煤层上分层老空区顶板再造方法及施工方法
CN205876263U (zh) 一种力偶矩增大瓦斯钻孔气密性型大孔径抽采封孔装置
CN105332733A (zh) 普采工作面采空区泵送胶结材料的条带充填方法
CN109322669A (zh) 倾斜煤层采空区刚柔条带相间充填无煤柱连续开采法
CN103147788A (zh) 厚煤层煤体加压正负压联合抽采瓦斯工艺
CN108708724B (zh) 一种胶结充填回收旺格维利煤柱采煤方法
CN113217094A (zh) 一种弱胶结强膨胀高富水软岩劣化效应控制方法
CN104832130B (zh) 露天矿端帮残煤气化回收方法
US20230030467A1 (en) Method for slope geological disaster treatment and mineral resource recovery
CN112412461B (zh) 一种露天矿端帮煤充填开采工艺方法
CN116220554A (zh) 一种用于急倾斜多煤层采空区充填的组合钻探方法
CN104594369B (zh) 喀斯特地区高压群孔置换灌浆方法及其结构
CN113756857B (zh) 地面高效抽采多层位老空区煤层气的防灭火抽采方法

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 18909752

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 18909752

Country of ref document: EP

Kind code of ref document: A1