Shaft grouting process of vertical shaft
A grouting and wellbore technology, which is applied in wellbore lining, shaft equipment, mining equipment, etc., can solve problems such as affecting the normal lifting operation of the wellbore, complex construction technology, and difficulty in drilling holes, and achieves low operating labor intensity and reduced safety risks. , the effect of small engineering
Active Publication Date: 2019-03-01
HUAINAN MINING IND GRP
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Problems solved by technology
[0003] The technical problem to be solved by the present invention is that the grouting of the vertical shaft shaft in the prior art adopts the method of making holes and injecting grout at the shaft lock mouth and the stubble joint of the shaft body, which has great difficulty in making holes, complicated construction technology, and large engineering quantity. Disadvantages that affect the normal lifting operation of the wellbore and high safety risks
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[0028] The embodiments of the present invention are described in detail below. This embodiment is implemented on the premise of the technical solution of the present invention, and detailed implementation methods and specific operating procedures are provided, but the protection scope of the present invention is not limited to the following implementation example.
[0029] Such as figure 1 Shown, a kind of shaft wellbore grouting process comprises the following steps:
[0030] S1: Arrange grouting holes on the ground around the wellbore lock, and use a pneumatic hammer to drill holes on the ground around the wellbore lock, with the wellbore lock as the center and 0.5m to 1m away from the outer edge of the wellbore lock at intervals of 0.5m to 2m Draw a concentric circle with the center of the wellbore lock as the center, and set a plurality of punching points at equal intervals on each concentric circle, and each punching point is punched downward as a grouting hole, and the ...
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Abstract
The invention discloses a shaft grouting process of a vertical shaft. The shaft grouting process comprises the following steps: grouting holes are formed in the ground around a shaft locking notch; cement paste is configured, during paste configuring, a certain amount of clear water is added into a stirring tube firstly, cement is poured into the stirring tube to be stirred for 3-5 min, and the stirred cement paste is put into a cement paste barrel to be grouted; and grouting pipes are used for conducting grouting in layers and at hole depths. The shaft grouting process has the advantages thatthe working procedure is simple, the project amount is less, the operation labor intensity is low, the security risk is small, shaft normal lifting work is not influenced, sleeves do not need to be pre-buried, the cost is reduced, during construction operation, personnel do not need to enter a shaft to work, and thus the security risk is extremely lowered.
Description
technical field [0001] The invention relates to the field of grouting for water plugging and reinforcement at shaft locks, and more particularly relates to a shaft grouting process for vertical shafts. Background technique [0002] Some well shaft locks in coal mines often have different degrees of water gushing. The water source is mainly surface water, which is more prominent in the rainy season. If things go on like this, the stability of the shaft lock circle will be destroyed and the safety of the shaft will be affected. Therefore, water plugging is required Grouting construction. The traditional method usually adopts the method of making holes and grouting at the wellbore lock mouth and the stubble of the wellbore. The holes made are transverse holes perpendicular to the sidewall of the wellbore. The grouting effect is poor. In addition, when personnel are drilling holes and grouting on the inner wall of the wellbore, they need to build a construction platform on the...
Claims
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IPC IPC(8): E21D5/04
CPCE21D5/04
Inventor 宗磊李正来杨雨新徐礼先
Owner HUAINAN MINING IND GRP