A method for erecting the ground net of the first floor of the mining stope

Abstract

The invention discloses a method for erecting a first-layer ground net of an ore removal stope. The method comprises the following steps: (1) processing bamboo palm shelves in situ near a first-layer entrance of the stope in which the ground net needs to be erected; (2) grouping every 3, 4 or 6 bamboo palm shelves, transversely connecting and fixing the upper middle parts and the lower middle parts of each group of the bamboo palm shelves through long bamboo palm, and adding a plurality of threaded tubes for fixation in the vertical direction, thereby forming the bamboo palm shelves; (3) fixing two bamboo palm pieces or iron tubes on a bucket of a remote carry-scraper; and (4) carrying the processed bamboo palm shelves into the stope by using the remote carry-scraper, and sequentially and tidily placing the bamboo palm shelves from inside to outside, thereby forming the standard ground net. By adopting the method, the standard ground net can be erected in the first-layer stope, and security guarantee can be provided for safe stoping of a top (bottom) column stope.

Description

technical field [0001] The invention belongs to the technical field of mine mining, and relates to a method for erecting a first-floor ground net in a mining stope. Background technique [0002] The applicant, Fankou Lead-Zinc Mine, is located in Jingnei, Renhua County, Shaoguan City, Guangdong Province, and belongs to Zhongjin Lingnan Nonferrous Metals Co., Ltd. The production capacity of the mine has changed from 40×10 in the initial stage of production 4 t / a, developed to 160×10 4 More than t / a, the daily output of lead-zinc ore is 5,000-5,500 tons, and the annual production capacity of lead-zinc metal content is 170,000-180,000 tons. It is one of the largest lead-zinc mining and dressing enterprises in my country's non-ferrous metal industry. After more than 40 years of mining, the mine has become a medium-risk mine. Due to the limitations of early exploration conditions and mining technology, a large number of difficult-to-mine (top-bottom pillar) ore bodies have been...

AI Technical Summary

Problems solved by technology

After the bottom pulling of the upper stope is completed, the stress structure and overall stability of the ore are destroyed; and affected by the blasting, the stability of the ore rock and the overall viscosity of the ore itself are reduced, and the top and bottom columns are mined at the bottom of the filling body. These conditions have increased the safety difficulty of top-bottom column recovery

[0004] At present, a large number of VCR methods and rock drilling rig methods are used for underground mining, and a large number of remote control scrapers are used for mining. Standard ground nets are erected in the stope, resulting in poor filling quality, which greatly increases the difficulty of mining residual ore

In the past, some simple ground nets were also used (such as: using waste water pipes, making individual palm bamboo frames, etc.), but from the perspective of the implementation effect, the simple ground nets cannot meet the technical requirements for safe recovery of the top and bottom columns, and cannot ensure the next step. Safety of Column Recovery

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