Method for replacing shaft casing of mining feeding well

A casing and wellbore technology, which is applied in the field of replacement of wellbore casings in mine feeding wells, can solve the problems that the wellbore casings cannot be repaired and replaced, delay the construction period, waste resources, etc., and achieve sustainable development and prolong the service life , Reduce the effect of manpower and material resources input and waste of resources

Inactive Publication Date: 2022-04-22
ANHUI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The invention aims at the problem that the traditional shaft casing cannot be repaired and replaced, and provides a method beneficial to replacing the shaft casing of the mine feeding well, which effectively solves the problems of waste of resources and delayed construction period

Method used

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  • Method for replacing shaft casing of mining feeding well
  • Method for replacing shaft casing of mining feeding well

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Embodiment Construction

[0023] The invention provides a method beneficial for replacing the shaft casing of a mine feeding well, which comprises a plurality of shaft casings, a flange assembly, a fixing device for the casing at the wellhead of the feeding well and a fixing device for the casing at the outlet of the feeding well. Embodiments of the present invention will be further described below in conjunction with the accompanying drawings.

[0024] to combine figure 1 , figure 2 As shown, a method beneficial to replacing the shaft casing of the mine feeding well, including: a plurality of flange assemblies 5, a plurality of shaft casings 6, a casing fixing device 4 for the inlet of the feeding well, and a casing for the outlet of the feeding well Pipe fixing device 7, the wellbore casing 6 is a fixed unit length, and the wellbore casing 6 can be connected and disassembled through the flange assembly 5, and the feeding well inlet casing fixing device 4 is anchored to the feeding well At the rock...

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Abstract

The invention discloses a method beneficial to replacement of a mine feeding well shaft sleeve. Comprising a plurality of shaft sleeves, a flange assembly, a feeding well feed port sleeve fixing device and a feeding well discharge port sleeve fixing device. After the feeding well reaches a certain service life, the shaft sleeve is connected with a new shaft sleeve in unit length at the feeding port through the flange assembly, then the fixing device at the feeding port of the feeding well and the fixing device at the discharging port are opened, the shaft sleeve gradually falls to the underground storage bin under the gravity action of the shaft sleeve, and the shaft sleeve is fixed to the feeding port of the feeding well. The bottommost section of the original shaft sleeve is disassembled in the storage bin, and the two fixing devices are operated to fix the shaft sleeve again at the same time, so that the replacement operation of the shaft sleeve part is completed, and the operation is circulated until the replacement of the whole shaft sleeve is completed. The service life of the feeding well is prolonged, a large amount of manpower and material resource investment and resource waste are reduced, and sustainable development is achieved.

Description

technical field [0001] The invention relates to the technical field of mine filling, in particular to a method for replacing shaft casings in mine feeding wells. Background technique [0002] With the continuous improvement of mining safety and environmental protection standards, the filling and filling mining method has been greatly developed and widely used in recent years. Prolonging the service life of mines, reducing waste of resources, and realizing sustainable development have become urgent problems to be solved in filling operations. After the filling slurry is prepared on the surface, it is transported to the underground goaf through the vertical feeding pipeline of the mine feeding well. The traditional wellbore casing and the rock wall are connected by cementing materials such as concrete. After reaching the service life, it cannot be repaired or replaced. It can only be disposed of as discarded, which causes a certain waste of resources and affects the normal pr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21F15/08
CPCE21F15/08
Inventor 何淑欣杨科于祥何祥
Owner ANHUI UNIV OF SCI & TECH
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