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Gently inclined-inclined medium-thick orebody mining method

A mining method and technology of thick ore body, which are applied in surface mining, earthwork drilling, underground mining, etc., can solve the problems of large mining accurate cutting volume, diluting ore drawing loss, low ore value, etc., and reach the mining and cutting engineering volume. Less, simple process effect

Inactive Publication Date: 2019-09-27
NORTHWEST RES INST OF MINING & METALLURGY INST
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Problems solved by technology

For this type of deposit, underground mining is a relatively weak link. The reason for the gently inclined medium-thick ore body is mainly due to the restriction of the dip angle and thickness of the ore body. It is difficult to carry the stope and manage the roof when mining with the open-field method. The problem of ore drawing loss and dilution is more prominent when using the sub-caving mining method. The excavation and cutting volume of mining by the chassis funnel method is very large, and most of the ore value is not high, which limits the selection and application of the filling method. Therefore, in the relevant mines There are many problems in mining China

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Embodiment Construction

[0015] The present invention will be further described below with reference to the drawings and specific embodiments.

[0016] Such as figure 1 As shown, a gently inclined-inclined medium-thick ore body mining method includes the following steps:

[0017] 1) Divide the structure parameters: divide the ore body into ore blocks, the vertical height of the ore block is 30-40m, and the width of the ore block is 80-100m; and the ore block is divided into sections, and each section is divided into a sectioned ore house and a sectioned top pillar 2. The thickness of sectioned mine room 1 is 5-8m, and the thickness of sectioned top pillar 2 is 3-5m.

[0018] 2) Quasi-mining engineering: from stage transportation lane 3 excavating the diagonal ramp 4 in the vein to the previous stage transportation lane 5 to form the pedestrian, driving and ventilation system in the ore block, and the diagonal ramp 4 in the vein is at the opening of each section Layout chute 6.

[0019] 3) Stopping work in t...

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Abstract

The invention belongs to the technical field of metallic mineral deposit underground mining methods and discloses a gently inclined-inclined medium-thick orebody mining method which aims to slove the problems existing in inclined and gently inclined orebody mining in the prior art. The method comprises the steps of ore block division and ore block division section, each section is subdivided into a section ore room and a section top column, an intraminal diagonal slope path is tunnelled from a stage transport roadway to an upper stage transport roadway and one ore-pass is arranged at an opening of each section of the intraminal diagonal slope path, a rock drilling trolley enters the section ore rooms through the intraminal diagonal slope path to drill ore room mining blast holes and enters section ore room mined-out areas through the intraminal diagonal slope path to drill top column mining blast holes to the section top columns, collapsed top column ore is transported to the ore-passes through a scraper, and permanent interstitial columns are left every 5-8 m. According to the gently inclined-inclined medium-thick orebody mining method, by means of the advanced rock drilling trolley technology, the gently inclined-inclined medium-thick orebody mining method has the advantages of a sublevel open field method, a room column mining method and the large-section roadway tunneling technology at the same time and has the advantages of being simple in process, small in mining cutting engineering quantity and the like.

Description

Technical field [0001] The invention relates to the technical field of underground mining methods for metal ore deposits, in particular to a gently inclined-inclined medium-thick ore body mining method. Background technique [0002] According to Zhou Chongren’s article "Several Issues in Mining Inclined and Gently Inclined Medium and Thick Orebodies": Inclined and gently inclined medium and thick orebodies are a common form of orebodies in my country. This type of orebodies account for approximately the total reserves of chemical mines. More than 70% of the gypsum deposits in building materials mines account for about 35%, and iron deposits in metallurgical mines account for about 18%. For this type of deposit, underground mining is a relatively weak link. The reason for the gently inclined medium-thick ore body is mainly due to the restriction of the inclination and thickness of the ore body. It is difficult to move the stope and manage the roof when using the empty field method....

Claims

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Application Information

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IPC IPC(8): E21C41/22
CPCE21C41/22
Inventor 张海磊
Owner NORTHWEST RES INST OF MINING & METALLURGY INST
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