Room-and-pillar mining method

A mining method and mine house technology, applied in the field of open-field mining method, can solve problems such as the influence of adjacent mine houses, potential safety hazards, and reasonable utilization of unfavorable resources, so as to improve labor productivity, ore recovery rate, and ore pillar distribution uniform effect

A mining method and mine house technology, applied in the field of open-field mining method, can solve problems such as the influence of adjacent mine houses, potential safety hazards, and reasonable utilization of unfavorable resources, so as to improve labor productivity, ore recovery rate, and ore pillar distribution uniform effect

CN106285682AInactive Publication Date: 2017-01-04YIBIN TIANYUAN GRP CO LTD +1
9 Cites 3 Cited by

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Room-and-pillar mining method
  • Room-and-pillar mining method
  • Room-and-pillar mining method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0027] Such as Figure 1 ~ Figure 3 Shown, my mine xx mining area xx middle section xx ore layer xx ore house adopts the room-and-pillar mining method of the present invention, and the concrete process is as follows:

[0028] a. Excavate the lower horizontal middle roadway 1 along the direction of the ore body. The roadway is 2.5 meters wide and 2 meters high, and is used for outputting ore, and as a pedestrian passage and wind flow passage;

[0029] b. Along the roadway 1 in the lower horizontal middle section, excavate electric rake chamber 2 every 26m, and the specification of electric rake chamber 2 is 3m×2.5m×2m;

[0030] c. Drill about 5m along the direction of the ore seam with 2m×2m to erect the funnel mouth 3 of the mine house and install electric rakes and other related auxiliary equipment;

[0031] d. In the middle of the mining house, the section with a width-to-height ratio of 4m×2m is cut and the upper mountain 4 is connected with the upper horizontal middle roa...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention relates to a mining method, and specifically discloses a room-and-pillar mining method. Compared with the prior art, the major difference is that according to traditional room-and-pillar mining methods, minerals recovery is started after upward incising; according to the method, after cut-through through upward incising, advancing angle mining is conducted on the two sides from top to bottom of upward incising, mineral drive branches are formed, the corresponding mineral drive branches of adjacent chambers are interconnected, a vent channel is formed, and mined minerals are conveyed away; and the mineral drive branches are driven from top to bottom, the adjacent mineral drive branches are interconnected, ore pillars are reserved between the mineral drive branches, and chamber sill pillars are reserved in the positions close to hopper openings. The method has the advantages that (1) high safety guarantees are provided for ore deposit mining with poor stability; and (2) mining cross workload is reduced, and the mining recovery rate is increased.

Description

technical field [0001] The invention relates to a mining method, especially an open-field mining method. Background technique [0002] The room-and-pillar mining method is a kind of open-field mining method, which divides stages (slightly inclined and inclined deposits) or panels (horizontal and slightly inclined deposits) into several mine rooms and pillars. The mining work is carried out in the mine house, and the ore pillars are not recovered under normal circumstances. [0003] The advantages of the room-and-pillar mining method are small mining workload, high mining intensity, high labor productivity, low mining cost, and small ore dilution rate. Therefore, this method is most widely used in the United States, and the output accounts for 60% of the total mining volume of large and medium-sized non-coal mines. Some mercury ore, phosphate rock, antimony ore and clay mines in my country are also mined by room-and-pillar mining method. The typical steps of the existing ro...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
04 Jan 2017
Publication
CN106285682A
IPC
E21C41/22
CPC
E21C41/22
Inventors
包海全; 梁志文