Novel method for preventing water inrush from shaft wall in shaft aquifer sinking

A new method, shaft technology, applied in shaft equipment, earthwork drilling, wellbore lining, etc., can solve the problems of grout running, frozen shaft wall rupture, high construction cost, etc. The effect of low pulp cost

Active Publication Date: 2018-11-30
SINOSTEEL MAANSHAN INST OF MINING RES +1
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AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a new method for preventing shaft wall water gushing during the excavation of shaft aquifers in order to solve the problems of high construction cost, easy to cause frozen shaft wall rupture, and easy occurrence of slurry runout in the prior art

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  • Novel method for preventing water inrush from shaft wall in shaft aquifer sinking
  • Novel method for preventing water inrush from shaft wall in shaft aquifer sinking
  • Novel method for preventing water inrush from shaft wall in shaft aquifer sinking

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Embodiment Construction

[0031] In order to further describe the present invention, a new method for preventing water inrush from the shaft wall during the tunneling of a shaft aquifer of the present invention will be described in further detail below with reference to the accompanying drawings and embodiments.

[0032] by figure 1 The schematic diagram of the vertical well induced grouting reinforcement profile of a new method for preventing shaft wall water inrush during shaft aquifer tunneling of the present invention shows that a new method for preventing shaft wall water inrush during shaft aquifer tunneling of the present invention adopts The following process and steps:

[0033] The invention provides a new method for preventing water gushing from the shaft wall during the tunneling of a shaft aquifer. According to the distribution characteristics of the ore body and the local hydrogeological conditions, the construction position of the shaft is selected, and the shaft is excavated downward at the po...

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Abstract

The invention discloses a novel method for preventing water inrush from the shaft wall in shaft aquifer sinking. A grouting pad (4) is constructed, and an operating platform (5) is mounted on the constructed grouting pad (4); a grouting hole (3), a water injection hole (2) and a water pumping hole (9) are obliquely, downwardly and outwardly drilled from the grouting pad (4) on the working platform(5), and the water pumping hole (9) is arranged at the upstream of a water flow field (10); water is injected into the water injection hole (2), water is pumped out of the water pumping hole (9), andgrout is then injected into the grouting hole (3). According to the invention, by water pumping and drainage, the water flow field and water pressure distribution of a to-be-grouted area are controlled, consequently, grout can be uniformly diffused into the grouted are, the phenomenon of grout runout is reduced, moreover, grouting pressure is moderately decreased, and furthermore, the grouting cost is reduced.

Description

Technical field [0001] The invention belongs to the technical field of shaft wall grouting and plugging, and specifically relates to a grouting reinforcement method for preventing water inrush from the shaft wall during the tunneling of a shaft aquifer. Background technique [0002] In the construction of deep shafts, because the rock masses around the mine often encounter permeable water-conducting layers, a large amount of fissure water stored in the underground will continuously seep out along the working surface. In severe cases, there will be water leakage in the entire shaft, especially when the shaft passes by. There are concentrated water gushing at several faults, with large water gushing volume and high water pressure. If the wellbore water inrush cannot be effectively blocked, it is easy to cause water inrush and flooding accidents. There are two commonly used methods for tunneling shaft aquifers: [0003] The first method is the "freezing + grouting" method. The free...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21D5/04
CPCE21D5/04
Inventor 肖益盖李鸿飞孙国权汪为平刘海林王雨波李宁刘帅李彩丽
Owner SINOSTEEL MAANSHAN INST OF MINING RES
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