Deep-hole drilling system and method for increasing precision and efficiency of deep curtain grouting hole thereof

A curtain grouting and drilling depth technology, applied in drilling equipment and methods, earthwork drilling, drilling equipment, etc., can solve the problems of increased construction cost, no longer popularized and adopted, low construction efficiency, etc., to reduce construction cost and shorten the The effect of simple construction period and construction process

Inactive Publication Date: 2016-12-07
BEIJING VIBROFLOTATION ENG +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Because the curtain grouting is basically carried out in the grouting corridor, the grouting should be carried out in sections according to the design requirements. The length of each section of grouting is generally 5m, and each section adopts the conventional drilling technology to lift 8

Method used

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  • Deep-hole drilling system and method for increasing precision and efficiency of deep curtain grouting hole thereof
  • Deep-hole drilling system and method for increasing precision and efficiency of deep curtain grouting hole thereof
  • Deep-hole drilling system and method for increasing precision and efficiency of deep curtain grouting hole thereof

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0023] Embodiment one: if Figure 1~3 As shown, a deep hole drilling system, the deep hole drilling system includes a double-tube coring drill and a coring drill overshot, the double-tube coring drill includes a cylinder and is arranged in the cylinder and sequentially Connected fishing spear head 1, fishing spear seat 2, tension spring 3, bullet caliper 4, bullet clamping seat 5, bullet clamping frame 6, suspension joint 7, shaft 8, spring sleeve 9, adjustment joint 10 and rock core inner tube 11, The bottom of the core inner tube 11 is equipped with a spring seat 12, and the cylinder body is composed of a bullet stopper 13, a bullet chamber 14, a hole reamer 15, and an outer core connected sequentially from top to bottom. Tube 16 and drill bit 17, the described coring drill overhauler is composed of connecting rod 18, gland 19, weight 20, fishing hook frame 21 connected sequentially from top to bottom, and described fishing hook frame 21 Two fishing hooks 23 are hinged in t...

Example Embodiment

[0032] Embodiment two: the difference between this embodiment and embodiment one is: the method for improving the drilling accuracy and work efficiency of the deep hole curtain grouting system described in the deep hole drilling system comprises the following steps:

[0033] S1. Connect the drill pipe to the top of the stopper head 13, connect the drill pipe to the power head device of the ground drilling rig, select the drilling position and position the drill bit 17;

[0034] S2, start the power head device of the drilling rig, the drill bit drills into the foundation at a drilling speed of 390r / min, and the drilling pressure is 9KN during drilling, and the drill bit 17 is ground to act on the rock surface at the bottom of the hole, thereby obtaining continuous extension of the drilled hole; During the process, the rock core gradually enters the core inner tube 11 at the lower part of the double-tube core drilling tool. Due to the action of the spring seat 12 at the bottom of...

Example Embodiment

[0039] Embodiment three: the difference between this embodiment and embodiment one is: the method for improving the drilling accuracy and work efficiency of the deep hole curtain grouting system described in the deep hole drilling system comprises the following steps:

[0040]S1. Connect the drill pipe to the top of the stopper head 13, connect the drill pipe to the power head device of the ground drilling rig, select the drilling position and position the drill bit 17;

[0041] S2, start the power head device of the drilling rig, the drill bit drills into the foundation at a drilling speed of 410r / min, and the drilling pressure is 10KN during drilling, and the drill bit 17 is ground to act on the rock surface at the bottom of the hole, thereby obtaining continuous extension of the drilled hole; During the process, the rock core gradually enters the core inner tube 11 at the lower part of the double-tube core drilling tool. Due to the action of the spring seat 12 at the bottom ...

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Abstract

The invention discloses a deep-hole drilling system which comprises a double-pipe core bit and a core bit fisher, wherein a snap spring base (12) is arranged at the bottom of an inner rock core pipe (11); a barrel is composed of an elastic clamping baffle head (13), an elastic clamping chamber (14), a reamer (15), an external rock core pipe (16) and a drill bit (17) which are connected from top to bottom in turn; the core bit fisher is composed of a connecting rod (18), a gland (19), a heavy hammer (20) and a fishing frame (21) which are connected from top to bottom in turn. The invention also discloses a method for increasing precision and efficiency of a deep curtain grouting hole by utilizing the deep-hole drilling system. The invention has the beneficial effects that the bottom offset of the drilled hole in 120m depth can be controlled within 0.3m, the drilling efficiency is increased, the construction period is shortened and the construction cost is lowered.

Description

technical field [0001] The invention relates to the technical field of controlling hole inclination when drilling deep holes, in particular to a deep hole drilling system and a method for improving the drilling accuracy and work efficiency of deep hole curtain grouting. Background technique [0002] The curtain grouting drilling depth of the riverbed dam foundation of the hydropower station curtain grouting project basically exceeds 100m. The currently used curtain grouting specification "Technical Specifications for Cement Grouting Construction of Hydraulic Structures" (DL / T 5148-2012) does not quantify the hole bottom deviation , it is required to be determined according to the actual situation of the project. If the deviation of the bottom of the curtain grouting deep hole is too large, it will make drilling more difficult and increase the construction cost, which is not conducive to ensuring the quality of the curtain. [0003] At present, the conventional drilling proc...

Claims

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Application Information

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IPC IPC(8): E21B25/00E21B31/18E21B7/04E21B3/02E21B47/022
CPCE21B25/00E21B3/02E21B7/04E21B31/18E21B47/022
Inventor 古剑飞林丹熊泽树钟语超赵连锐王兵廖勇罗双生陈兴泽龚永清张勇李昂王莉
Owner BEIJING VIBROFLOTATION ENG
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