Mine field layout method suitable for fluidized mining of coal resources

Patent metadata

Field	Value
Publication number	US-10975694-B2
Application number	US-201816467490-A
Country	US
Kind code	B2
Filing date	Mar 23, 2018
Priority date	Mar 23, 2018
Publication date	Apr 13, 2021
Grant date	Apr 13, 2021

Abstract

A mine field layout method suitable for fluidized mining of coal resources is provided. A main shaft and an air shaft are provided in the mine field, the bottom of the main shaft is located in the shallow horizontal coal seam zone, and the bottom of the air shaft is located in the deep horizontal coal seam zone. The horizontal main roadways are arranged at two boundaries along the strike of the coal seam, and inclined main roadways are arranged at two boundaries along the dip direction of the coal seam. Connecting roadways are located inside the mine field and are in communication with the horizontal main roadways. In the coal mining stage, the coal resources can be converted into the fluidized energy product and/or electricity by an unmanned automatic mining machine.

First claim

The invention claimed is:

1. A mine field layout method suitable for fluidized mining of a coal seam, the mine field comprising a first boundary extending along a strike of the coal seam and located in a shallow horizontal coal seam zone, a second boundary extending along the strike of the coal seam and located in a deep horizontal coal seam zone, a third boundary extending along a dip direction of the coal seam and a fourth boundary extending along the dip direction of the coal seam, and the first boundary, the second boundary, the third boundary, and the fourth boundary forming a quadrilateral mine field area, wherein the mine field layout method comprises:
providing a main shaft and an air shaft, wherein a bottom of the main shaft is located at one end of the first boundary, and a bottom of the air shaft is located at one end of the second boundary;
providing a first horizontal main roadway and a second horizontal main roadway, wherein the first horizontal main roadway extends along the first boundary, and the second horizontal main roadway extends along the second boundary;
providing a first inclined main roadway and a second inclined main roadway, wherein the first inclined main roadway extends along the third boundary, and the second inclined main roadway extends along the fourth boundary;
providing one or more connecting roadways, wherein the one or more connecting roadways are located inside the mine field, extend along the dip direction of the coal seam and are each in communication with the first horizontal main roadway and the second horizontal main roadway;
providing a shaft station, wherein the shaft station is located at the bottom of the main shaft;
providing a mine field sump, wherein the mine field sump is located within a preset range of the bottom of the air shaft and is configured to store water extracted from the coal seam;
providing a fluidized conversion chamber, wherein the fluidized conversion chamber is located in the shaft station and is configured to convert the coal seam mined during excavating the roadways into at least one of a fluidized energy product and electricity;
providing a shaft station sump, wherein the shaft station sump is located in the shaft station and is configured to store water extracted when constructing the fluidized conversion chamber; and
providing energy transmission pipelines, wherein the energy transmission pipelines are arranged in the first horizontal main roadway, the second horizontal main roadway, the first inclined main roadway, the second inclined main roadway, the one or more connecting roadways and the main shaft, and are configured to transmit energy for normal operation of an unmanned automatic mining machine in the mine field and to transport at least one of the fluidized energy product and electricity converted from the coal seam to above ground.

2. The mine field layout method according to claim 1 , wherein the bottom of the main shaft and the bottom of the air shaft are at diagonal positions in the quadrilateral mine field area.

3. The mine field layout method according to claim 2 , wherein the energy transmission pipelines comprise energy charging pipelines and energy extracting pipelines;
the energy charging pipelines are configured to transport energy for normal operation of the unmanned automatic mining machine; and
the energy extracting pipelines are configured to transport energy converted from the coal seam to the above ground.

4. The mine field layout method according to claim 1 , further comprising:
providing a gas power station in the shaft station, wherein the gas power station is configured to convert gas extracted from the coal seam during excavating the roadways into electricity.

5. The mine field layout method according to claim 4 , wherein the energy transmission pipelines in the first horizontal main roadway, the second horizontal main roadway, the first inclined main roadway, the second inclined main roadway and the one or more connecting roadways comprise: energy charging pipelines, energy extracting pipelines and gas transportation pipelines;
the energy charging pipelines are configured to transport energy for normal operation of the unmanned automatic mining machine in the mine field;
the gas transportation pipelines are configured to transport the gas extracted from the coal seam to the gas power station, to allow the gas power station to convert the gas into electricity; and
the energy extracting pipelines are configured to transport at least one of the fluidized energy product and electricity converted from the coal seam by the unmanned automatic mining machine to the energy transmission pipelines in the main shaft, to allow the energy transmission pipelines in the main shaft to transport at least one of the fluidized energy product and electricity converted from the coal seam to the above ground.

6. The mine field layout method according to claim 4 , wherein intersections of the roadways are each arranged in a shape of a circular arc.

7. The mine field layout method according to claim 4 , wherein the energy transmission pipelines comprise energy charging pipelines and energy extracting pipelines;
the energy charging pipelines are configured to transport energy for normal operation of the unmanned automatic mining machine in the mine field; and
the energy extracting pipelines are configured to transport energy converted from the coal seam to the above ground.

8. The mine field layout method according to claim 1 , further comprising:
providing filling boreholes and filling pipelines; wherein, the filling boreholes extend from the ground to the one or more connecting roadways, and are configured to transport filling slurry to the one or more connecting roadways; and
the filling pipelines are arranged in the one or more connecting roadways and are in communication with the filling boreholes, and are configured to transport the filling slurry to a goaf.

9. The mine field layout method according to claim 8 , wherein an installation angle of the filling pipelines is the same as an inclination angle of the one or more connecting roadways.

10. The mine field layout method according to claim 8 , further comprising:
providing a first filling wall behind the unmanned automatic mining machine when the goaf is being filled, wherein a plane of the first filling wall is perpendicular to a direction of a coal mining route.

11. The mine field layout method according to claim 10 , comprising:
providing a second filling wall constructed at an intersection of the goaf and the one or more connecting roadways when the goaf is being filled and the goaf is intersected with the one or more connecting roadways, and the plane of the second filling wall is perpendicular to the one or more connecting roadways.

12. The mine field layout method according to claim 1 , wherein the energy transmission pipelines comprise energy charging pipelines and energy extracting pipelines;
the energy charging pipelines are configured to transport energy for normal operation of the unmanned automatic mining machine in the mine field; and
the energy extracting pipelines are configured to transport at least one of the fluidized energy product and electricity converted from the coal seam to the above ground.

Assignees

• Univ China Mining
• Univ Shenzhen

Inventors

• Ju Yang
• Xie Heping
• Zhang Yong
• Zhu Yan
• Gao Feng
• Nie Xiaodong
• Wan Changbing
• Song Jinxin
• Lu Chang
• Liu Hongbin
• Ren Zhangyu

Classifications

• E21C41/16 Primary

  Methods of underground mining (winning machines therefor E21C25/00 - E21C39/00); Layouts therefor · CPC title

• E21C41/18 Primary

  for brown or hard coal · CPC title

• E21C45/00

  Methods of hydraulic mining; Hydraulic monitors (E21C25/60 takes precedence) · CPC title