A method of grouting and sealing the fissures in the aquifer through the water collecting pipe and a method of excavating the vertical wellbore by using the same

A water collecting pipe and grouting technology, which is applied in wellbore/well components, well sinking, earth-moving drilling, etc., can solve the problems of insignificant grouting effect, great hidden danger, long construction period, etc., so as to relieve water inrush and flooding Accident, changing the direction of water flow, the effect of short construction period

Active Publication Date: 2019-12-31
PINGMEI SHENMA CONSTR ENG GROUP
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the previous method of directly making holes and grouting on the working face is used, and only grouting without effective cooling measures, it is very easy to make the grout difficult to solidify due to high water temperature, resulting in poor quality of the well wall and inconspicuous grouting effect, resulting in construction period. Long, hidden dangers, unsafe, floods cannot be ruled out

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Pingdingshan Co., Ltd. No. 13 Mine East Wing Ventilation System Safety Renovation The new air intake shaft has a net diameter of 8.50m and a design depth of 875.3m. When the wellbore passes through the aquifer section, the comprehensive water prevention and control principle of "prediction and forecasting, exploration in case of doubt, exploration before excavation, treatment before mining" is adhered to. When the wellbore is constructed to a depth of 857.5m (located 6m below the bottom plate of Jiji Matoumen), according to the design requirements, 5 water detection holes are arranged on the working face of the wellbore (4 are evenly arranged at a distance of 500mm from the side of the wellbore and 1 center hole), the radial angle is 80°, the penetration depth is 25m, and the final hole is controlled 3m outside the wellbore contour. When the No. 1 water exploration hole was constructed in the southeast direction of the wellbore to the 19m position, there was a sudden ph...

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PUM

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Abstract

The invention discloses a method for plugging cracks in water-bearing strata by means of grouting by the aid of water collecting pipes. The method includes steps of 1), carrying out punching, to be more specific, punching the water collecting pipes by the aid of clear water and communicating the cracks in the water-bearing strata with one another to form grouting channels; 2), flushing holes, to be more specific, injecting clear water and high-modulus water glass to flush the holes and displacing sediment in the holes via the cracks of working faces; 3), carrying out cooling, to be more specific, filling the holes with high-modulus water glass and cooling the water-bearing cracks; 4), sealing the holes by means of grouting, to be more specific, carrying out double-fluid grouting by the aidof cement and high-modulus water glass during grouting and forming an integral firm shell outside each shaft to achieve the purpose of plugging the cracks. The method has the advantages of short construction period, good cooling and grouting effects, safety, reliability and the like.

Description

technical field [0001] The invention belongs to the technical field of safe construction research of high water temperature and rich water layers in vertical shaft shafts by ordinary grouting method, and specifically relates to a method for grouting and sealing cracks in aquifers through water collecting pipes and using the same to excavate vertical shafts wellbore method. Background technique [0002] The ventilation system renovation of the east wing of the Thirteenth Coal Mine is located about 2.4Km south of the Shisan Coal Mine Industrial Plaza. The net diameter of the shaft is 8.50m, the design depth is 875.3m, and the support form is double-layer reinforced concrete support with a wall thickness of 600mm. Concrete Strength Class C 50 . According to the requirements of the "Comprehensive Water Control Principles in Mine" and the "Coal Mine Safety Regulations", the ventilation system of the east wing of the No. Water prevention principles. When the wellbore is constr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21B33/13E21B37/00E21D1/00
Inventor 刘晓强闫昕岭梁祖军张自新孙鹏翔王建峰胡亚威常涛孟丽洁刘国申吴家林席军伟
Owner PINGMEI SHENMA CONSTR ENG GROUP
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