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The construction method of quickly dredging and plugging mines

A construction method and mine technology, applied in drilling equipment and methods, mining equipment, earthwork drilling and mining, etc., can solve problems such as wellbore blockage, and achieve the effect of easy mastery and low technical difficulty requirements

Active Publication Date: 2022-07-29
PANGANG GRP ENG TECH
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Problems solved by technology

However, although a small well with a diameter of 1.2m has been drilled with a raise drilling rig in the early stage, and the excavation of 1280-1300m has been completed according to the section of 2.5×3.0m, but the wellbore was blocked during the downward excavation from 1280m

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  • The construction method of quickly dredging and plugging mines

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Embodiment Construction

[0019] The present invention will be further described below in conjunction with the accompanying drawings.

[0020] The construction method for quickly dredging a blocked mine includes the following steps:

[0021] Step 1: Set up a drilling rig operating platform 2 at the well blockage of mine 1. Before erecting, clean up the loose ballast within the erection range, and use concrete to level the uneven places within the erecting range; And can withstand the vibration and impact load during the drilling process to meet the requirements of safe operation;

[0022] Step 2: After the drilling rig operation platform 2 is erected, the drilling rig is hoisted to the drilling rig operation platform 2 and installed in place; the drilling rig can be of various types, preferably a geological core drilling rig; the drilling rig can usually be installed on the construction site. More than 3T hoist for hoisting;

[0023] Step 3: Install the drilling tool on the installed drilling rig; th...

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Abstract

The invention belongs to the field of mine construction, and specifically discloses a construction method for quickly dredging and plugging a mine, aiming to safely and efficiently remove the plugging stone to quickly dredge the mine. In this construction method, the drilling rig operating platform is first erected, and then the drilling rig is installed on the erected drilling rig operating platform, and the force-bearing structure of the well-blocking ballast in the wellbore is destroyed by drilling with the pipe, so that the well-blocking ballast is broken. The well-blocking slag is still not broken and then blasting to make it collapse; the entire construction process is simple, easy to operate, safe and reliable, and the construction technology level and technical difficulty requirements are not high, easy to master, and can quickly complete the dredging of well-blocked mines.

Description

technical field [0001] The invention belongs to the field of mine construction, and in particular relates to a construction method for quickly dredging and blocking mines. Background technique [0002] At present, underground mining is mostly used in mining, but there are often many problems in the mine ventilation system, and well blockage is one of the more serious problems. For example, directly use the stope after mining as a ventilation shaft. After a long period of geological action, the mined-out area is easy to fall and block, which directly affects the normal operation of the underground ventilation system. Another example: In Jianshan stope open-pit to underground mining project, the main 3# air intake shaft of the 1200-1280m air intake system project of the follow-up project after the design change is located in the middle of the 1280m subsection stope connection of the first-phase trackless slope, and the 3# air intake The well is a square well with a total heig...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21D9/10E21D9/00E21B7/20
CPCE21D9/10E21D9/006E21B7/20
Inventor 谈捷周瑜李步华王冰彭益军李庭慧
Owner PANGANG GRP ENG TECH
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