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Method for mining thick ore body through segmental ore breaking and subsequent cemented filling
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A technology of cemented filling, thick and large ore body, applied in the direction of filling, ground mining, mining equipment, etc., can solve the problems of high investment, complicated process, low ore output, etc.
Inactive Publication Date: 2017-09-05
NORTHWEST RES INST OF MINING & METALLURGY INST
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[0005] The present invention aims at the problem that the current mining method of thick and large ore body has complicated process, high investment, low ore yield and cannot meet the market demand, and provides a mining method for thick and large ore body with subsection collapse ore followed by cementation filling
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Embodiment 1
[0031] This mining method is applied to the poor ore in the eastern part of the No. 2 mining area of Jinchuan.
[0032] A mining method for segmental collapse followed by cementation and filling for thick and large ore bodies, comprising the following steps:
[0033] 1) Divide the ore body into several segments in the vertical direction of the ore body, and the segment height is 20m;
[0034] 2) In each segment of step 1), divide the ore body into several stopes at intervals of 10m along the ore body, and the width and length of the stope are both 10m;
[0035] 3) In each stope of step 2), a rock drilling roadway 1 is arranged perpendicular to the ore body, and the rock drilling roadway passes through the ore body to the surrounding rock of the ore body hanging wall. The size of the rock drilling roadway 1 is 4m in width and 4m in height;
[0036] 4) Support the rock drilling roadway in step 3) according to the following steps:
[0037] a. Spray 50mm thick concrete on the ...
Embodiment 2
[0045] This mining method is applied to a lean ore in the No. 2 mining area of Jinchuan.
[0046] A mining method for segmental collapse followed by cementation and filling for thick and large ore bodies, comprising the following steps:
[0047] 1) Divide the ore body into several segments in the vertical direction of the ore body, and the segment height is 25m;
[0048] 2) In each section of step 1), divide the ore body into several stopes at intervals of 12.5m along the direction of the ore body, and the width and length of the stope are both 12.5m;
[0049] 3) In each stope of step 2), a rock drilling roadway is arranged vertically to the ore body, and the rock drilling roadway passes through the ore body to the surrounding rock on the ore body wall. The size of the rock drilling roadway is 4m wide and 4m high;
[0050] 4) Support the rock drilling roadway in step 3) according to the following steps:
[0051] a. Spray 100mm thick concrete on the roadway wall;
[0052] ...
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Abstract
The invention discloses a method for mining a thick ore body through segmental ore breaking and subsequent cemented filling. The method comprises the following steps: 1) dividing the ore body into a plurality of segments along the vertical direction of the ore body; 2) dividing the ore body into a plurality of stopes in each segment along the trend of the ore body; 3) arranging rock drilling roadways along a direction perpendicular to the trend of the ore body in each stope, wherein the rock drilling roadways penetrate the ore body and extend to the hanging wall rock of the ore body; 4) supporting the rock drilling roadways formed in the step 3): a, spraying concrete onto the wall surfaces of the roadways; b, knocking anchor poles into the two sides and the tops of the roadways; c, fixedly laying steel mesh reinforcement onto the two sides of the roadways; and d, spraying a 100-mm-thick layer of concrete onto the surfaces of the steel mesh reinforcement; and 5) carrying out mining: a, mining the ore body from hanging segment to footwall segment successively; and b, mining every stope in each segment in such a manner that primary mining is carried out on odd or even stopes at first and then secondary mining is carried out on the rest stopes.
Description
technical field [0001] The invention relates to the technical field of backfill mining technology, in particular to a mining method for segmental collapse followed by cementation backfill for thick and large ore bodies. Background technique [0002] At present, the main methods used in the mining of thick and large ore bodies in my country include room and pillar method, ore retention method, segmented ore room method, [0003] Layer, segmented caving method, staged caving method, upward layered filling method, layered, segmented filling method, wall filling method, point column filling method, staged filling method, etc. Among them, the room-and-pillar method, wall filling method, and inclined layered filling method are mainly used for horizontal and gently inclined ore bodies. [0004] However, the mining method of the above-mentioned thick and large ore bodies has complex processes, high investment and low ore output, which cannot meet market demand. Contents of the in...
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