CN-122014257-A - Mining method for mining room between sections of steep thick ore body

CN122014257ACN 122014257 ACN122014257 ACN 122014257ACN-122014257-A

Abstract

The application relates to a mining room stoping method between sections of a steep thick ore body, which comprises the steps of constructing stope connecting channels from a section roadway to an ore body lower disc, constructing a vein-following roadway along the trend of the ore body lower disc, dividing the ore body into a plurality of stoping units, constructing an ore-discharging main roadway, an ore-discharging auxiliary roadway and an ore-discharging inclined roadway in the middle position of the ore body and the lower section of two units on the outer side, constructing a pre-control top main roadway, a pre-control top auxiliary roadway and a pre-control top inclined roadway in the middle position of the ore body and the upper section of two units on the outer side, symmetrically arranging the stoping units on two sides of the ore-discharging main roadway, constructing cutting wells in the middle area of the stope on the two sides, blasting and stoping the upper disc and the lower disc of the ore body from the cutting wells to form four working faces, and transporting the ore after blasting the ore body on the upper disc by the ore-discharging main roadway and transporting the ore after blasting the ore body by the ore-discharging roadway. The application can realize the cooperation of multiple working surfaces and the diversion of the ore discharging and transporting paths, improves the stoping efficiency of the ore room and shortens the stoping period of the ore room.

Inventors

Lv Mingjia
GUO ZHAOWEI
YAN BINBIN
XU CHUNCHUN
WANG ZIHAN
WANG GUANGXI
LIU SIYUAN
LI JIANGWEI
LI HONGLIN

Assignees

山东黄金矿业(莱州)有限公司三山岛金矿

Dates

Publication Date: 20260512
Application Date: 20260309

Claims (10)

1. A mining method of a mining room between sections of a steep thick ore body is characterized by comprising the following steps of: step 1, constructing stope connecting channels from a segmented roadway to a mine body lower disc, constructing a vein-following roadway along the trend of the mine body lower disc, dividing a mine room, and dividing the mine room into a plurality of stoping units; step 2, constructing a main ore removal roadway, an auxiliary ore removal roadway and an inclined ore removal roadway at the middle position of the ore room and the lower sections of the two units at the outer side, and constructing a top pre-control main roadway, a top pre-control auxiliary roadway and an inclined pre-control roadway at the middle position of the ore room and the upper sections of the two units at the outer side, wherein the extraction units at the two sides of the main ore removal roadway are symmetrically arranged and have the same quantity; and 3, constructing cutting wells in the middle areas of the stoping units at two sides, starting blasting stoping on an upper disc and a lower disc of the ore body from the cutting wells to form four working surfaces, transporting the ore subjected to blasting of the ore body of the upper disc through an ore discharge main roadway, and transporting the ore subjected to blasting of the ore body of the lower disc through an ore discharge auxiliary roadway.
2. The method of mining a steeply dipping thick seam mining room of claim 1, further comprising: Sector blastholes are arranged at the positions of the upper disc and the lower disc of the ore body, and vertical blastholes are arranged in other areas.
3. The method of mining a steeply dipping thick seam mining room of claim 1, further comprising: After stoping units on two sides are finished, paving a false bottom material on a goaf bottom plate, lacing and welding, constructing a half-face filling sealing wall at the junction of the ore drawing auxiliary roadway and the lower disc gob-side entry roadway and the ore drawing auxiliary roadway and the ore drawing inclined roadway, and injecting a high-proportion cemented filling body into the goaf to form a false bottom. And continuously constructing a full-height filling sealing wall at the junction of the ore drawing auxiliary roadway and the lower disc gob-side entry roadway and the ore drawing inclined roadway, and rapidly filling the goaf through the upper subsection corresponding to the pre-controlled top inclined roadway.
4. The method of mining a steeply dipping thick seam mining room of claim 1, further comprising: and (3) after the outermost stoping unit is filled, stoping and filling are carried out from two sides to the middle stoping unit step by step according to the step (2) and the step (3).
5. The method of mining a steeply dipping thick seam mining room of claim 4, further comprising: in the process of stoping from two sides to the middle stoping unit step by step, stoping is stopped when three or four adjacent stoping units in the middle are reached, ore bodies of the three or four stoping units in the middle are divided into a plurality of layered stopes from bottom to top, and then the rest ore bodies in the three or four stoping units in the middle are stoped by using a route filling mining method.
6. The method of mining a steep-thickness ore body section-to-section room in accordance with claim 5, wherein the first preset height is set based on the lower section roadway floor when mining ore bodies in the middle three or four mining units, and the layered stope is operable to employ upward-route mining when the layered stope floor height is less than the first preset height.
7. The method of mining room extraction between segments of steeply dipping thick ore bodies as claimed in claim 6, wherein the first preset height is set according to a maximum climbing angle of the mining equipment, and the first preset height is 10 to 12 meters.
8. The mining method of a mining room between sections of a steeply dipping thick ore body according to claim 6, wherein the mining of the uppermost stope is performed first and the false bottom filling is laid, and then the mining of the ore bodies in the mining units is sequentially performed in a preset order.
9. The method of mining a steeply dipping thick seam mining room of claim 8, further comprising: and (5) paving false bottom filling after stoping the lowest-layer access stope.
10. The mining method of a steeply dipping thick ore body segmented room according to claim 1, wherein the length of the room is 80 to 100 meters, and the width of the mining unit is 6 to 8 meters.

Description

Mining method for mining room between sections of steep thick ore body Technical Field The application relates to the technical field of mining, in particular to a mining method for a mining room between sections of a steeply inclined thick ore body. Background At present, most underground mines in China generally adopt upward or downward route filling mining methods when facing heavy-inclined thick ore bodies, the stoping directions of the two methods are opposite, when normal stoping operation is carried out on the thick ore bodies, the two methods all need to construct a plurality of routes along the trend of the ore bodies or tend to construct 'stoping-ore discharging-filling-curing' circulation along the routes, and the process construction is relatively lengthy, the supporting amount is large, and the cost is high. Especially under the condition of the rapid increase of the deep mining temperature of the underground mine at present, the labor intensity of workers is high, the whole stoping period of the ore body needs to be shortened, and the potential safety hazard is reduced. Disclosure of Invention The application aims to provide a mining room stoping method between sections of a steeply inclined thick ore body so as to solve or alleviate the problems in the prior art. In order to achieve the above object, the present application provides the following technical solutions: the invention provides a mining method for a mining room between sections of a steep thick ore body, which aims at mining the steep thick ore body and comprises the following steps: step 1, constructing stope connecting channels from a segmented roadway to a mine body lower disc, constructing a vein-following roadway along the trend of the mine body lower disc, dividing a mine room, and dividing the mine room into a plurality of stoping units; step 2, constructing a main ore removal roadway, an auxiliary ore removal roadway and an inclined ore removal roadway at the middle position of the ore room and the lower sections of the two units at the outer side, and constructing a top pre-control main roadway, a top pre-control auxiliary roadway and an inclined pre-control roadway at the middle position of the ore room and the upper sections of the two units at the outer side, wherein the extraction units at the two sides of the main ore removal roadway are symmetrically arranged and have the same quantity; and 3, constructing cutting wells in the middle areas of the stoping units at two sides, starting blasting stoping on an upper disc and a lower disc of the ore body from the cutting wells to form four working surfaces, transporting the ore subjected to blasting of the ore body of the upper disc through an ore discharge main roadway, and transporting the ore subjected to blasting of the ore body of the lower disc through an ore discharge auxiliary roadway. In some embodiments, the method for mining the ore room between the sections of the steep thick ore body further comprises: Sector blastholes are arranged at the positions of the upper disc and the lower disc of the ore body, and vertical blastholes are arranged in other areas. In some embodiments, the method for mining the ore room between the sections of the steep thick ore body further comprises: After stoping units on two sides are finished, paving a false bottom material on a goaf bottom plate, lacing and welding, constructing a half-face filling sealing wall at the junction of the ore drawing auxiliary roadway and the lower disc gob-side entry roadway and the ore drawing auxiliary roadway and the ore drawing inclined roadway, and injecting a high-proportion cemented filling body into the goaf to form a false bottom. And continuously constructing a full-height filling sealing wall at the junction of the ore drawing auxiliary roadway and the lower disc gob-side entry roadway and the ore drawing inclined roadway, and rapidly filling the goaf through the upper subsection corresponding to the pre-controlled top inclined roadway. In some embodiments, the method for mining the ore room between the sections of the steep thick ore body further comprises: and (3) after the outermost stoping unit is filled, stoping and filling are carried out from two sides to the middle stoping unit step by step according to the step (2) and the step (3). In some embodiments, the method for mining the ore room between the sections of the steep thick ore body further comprises: in the process of stoping from two sides to the middle stoping unit step by step, stoping is stopped when three or four adjacent stoping units in the middle are reached, ore bodies of the three or four stoping units in the middle are divided into a plurality of layered stopes from bottom to top, and then the rest ore bodies in the three or four stoping units in the middle are stoped by using a route filling mining method. In some embodiments, in the mining method for the mining room between the sections of the steeply inclined thi