Impermeable choking and grouting method for rock plug truncated cone shell in deepwater

A truncated cone and shell technology is applied in the field of underwater rock plug surrounding rock quality improvement consolidation grouting, seepage prevention and consolidation grouting of underwater cavern blasting surrounding rock mass, can solve problems such as leakage irrigation, and ensure the Safety and reliability, improving rock mass quality, and clear and clear process flow

Active Publication Date: 2011-09-14
CHINA WATER NORTHEASTERN INVESTIGATION DESIGN & RES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The invention provides an anti-seepage and air-tight grouting method for a truncated cone shell of a rock plug under deep water, so as to solve the problem that there will still be leakage channels in the body of the rock plug after grouting

Method used

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  • Impermeable choking and grouting method for rock plug truncated cone shell in deepwater
  • Impermeable choking and grouting method for rock plug truncated cone shell in deepwater
  • Impermeable choking and grouting method for rock plug truncated cone shell in deepwater

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0052] Including the following steps:

[0053]1. Drilling layout design

[0054] a) Find a point on the extension line of the axis of rock plug 1 toward the inside of the cave P ,Such as Figure 1a As shown, make the distance between this point and the lower mouth of the rock plug 3 L Satisfies the following formula:

[0055]

[0056] In the formula: —The diameter of the lower opening of the rock plug, in m;

[0057] —The diameter of the upper opening of the rock plug, in m;

[0058] - rock plug thickness coefficient, generally take 1.1;

[0059] b) Taking the axis of the rock plug body as the axis, with P The point is the apex of the cone, and each coaxial conical surface 4 and the plane of the lower mouth of the rock plug 3 and the plane of the upper mouth of the rock plug 2 are cut into a lower mouth truncated cone concentric circle 6 and an upper mouth truncated cone concentric circle 5, Figure 1b and Figure 1c shown;

[0060] c) Make the truncated circl...

Embodiment 2

[0088] Including the following steps:

[0089] 1. Drilling layout design

[0090] a) Find a point on the extension line of the axis of rock plug 1 toward the inside of the cave P ,Such as Figure 1a As shown, make the distance between this point and the lower mouth of the rock plug 3 L Satisfies the following formula:

[0091]

[0092] In the formula: —The diameter of the lower opening of the rock plug, in m;

[0093] —The diameter of the upper opening of the rock plug, in m;

[0094] - rock plug thickness coefficient, generally take 1.2;

[0095] b) Taking the axis of the rock plug body as the axis, with P The point is the apex of the cone, and each coaxial conical surface 4 and the plane of the lower mouth of the rock plug 3 and the plane of the upper mouth of the rock plug 2 are cut into a lower mouth truncated cone concentric circle 6 and an upper mouth truncated cone concentric circle 5, Figure 1b and Figure 1c shown;

[0096] c) Make the truncated circ...

Embodiment 3

[0124] Including the following steps:

[0125] 1. Drilling layout design

[0126] a) Find a point on the extension line of the axis of rock plug 1 toward the inside of the cave P ,Such as Figure 1a As shown, make the distance between this point and the lower mouth of the rock plug 3 L Satisfies the following formula:

[0127]

[0128] In the formula: —The diameter of the lower opening of the rock plug, in m;

[0129] —The diameter of the upper opening of the rock plug, in m;

[0130] - rock plug thickness coefficient, generally take 1.4;

[0131] b) Taking the axis of the rock plug body as the axis, with P The point is the apex of the cone, and each coaxial conical surface 4 and the plane of the lower mouth of the rock plug 3 and the plane of the upper mouth of the rock plug 2 are cut into a lower mouth truncated cone concentric circle 6 and an upper mouth truncated cone concentric circle 5, Figure 1b and Figure 1c shown;

[0132] c) Make the truncated circ...

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Abstract

The invention relates to an impermeable choking and grouting method for a rock plug truncated cone shell in deepwater, belonging to the method for grouting a rock plug body in deepwater rock plug blasting engineering. The drilling position, drilling interval, drilling direction and drilling depth for grouting can be determined by a group of coaxial truncated cone surface and the cut concentric circle, so that at the periphery of the rock plug and in the rock bodies on the upper opening and the lower opening, compound serum taking cement as base material is filled in cracks and holes of jointsof the rock body, and after the compound serum is cured, the continuously impermeable body with the shape similar to that of the truncated cone shell can be formed in the grouted rock body. In the invention, the purpose is clear and definite, the pertinence is strong, the grouting effect is obvious, the process is clear, and the implementation is simple.

Description

technical field [0001] The invention belongs to a rock plug body grouting method for underwater rock plug blasting engineering, in particular to a rock plug body grouting under deep water, and is also suitable for improving the quality of underwater rock plug surrounding rock consolidation and grouting, and underwater cavern blasting surrounding rock bodies anti-seepage and consolidation grouting. Background technique [0002] When constructing diversion tunnels for existing reservoirs or rivers and lakes, a section of rock mass is left at the water inlet, and this section of rock mass is used to retain water instead of building a cofferdam at the inlet. The tunnel is filled with water and meets the design flow rate, and the part of the rock mass removed by blasting is called "rock plug". Because it is underwater, its blasting process is called "underwater rock plug blasting". For the construction of diversion tunnels for water intake in existing reservoirs, especially in ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D15/06E02D31/06
Inventor 苏加林高垠金正浩王科峰王剑英朱奎卫蔡云波何国伟张慧敏
Owner CHINA WATER NORTHEASTERN INVESTIGATION DESIGN & RES
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