阅读说明：本技术 一种深水建筑物水下渗漏通道快速补漏方法 (Rapid leakage repairing method for underwater leakage channel of deepwater building ) 是由 赵尚传 刘龙龙 王少鹏 左新黛 于 2021-08-19 设计创作，主要内容包括：本发明提供了一种深水建筑物水下渗漏通道快速补漏方法,属于水利水电工程领域。本发明根据渗漏的深度和宽度确定板材的厚度,采用合适厚度板材固定在渗漏通道的部位,通过板材预留孔进行双组份注浆,以适用于300m深水建筑物各种宽度的裂缝补漏的快速施工。实施例的结果表明,本申请提供的深水建筑物水下渗漏通道快速补漏方法,细石混凝土、水泥砂浆材料、水泥基灌浆材料在3h的抗压强度即可达到20MPa以上,6h的抗压强度达到30MPa以上。(The invention provides a quick leak repairing method for an underwater leakage channel of a deepwater building, and belongs to the field of hydraulic and hydroelectric engineering. The invention determines the thickness of the plate according to the depth and the width of the leakage, adopts the plate with proper thickness to be fixed at the position of the leakage channel, and carries out double-component grouting through the preformed hole of the plate, thereby being suitable for the rapid construction of crack leakage repairing of various widths of 300m deep water buildings. The embodiment result shows that the compression strength of the fine aggregate concrete, the cement mortar material and the cement-based grouting material in 3 hours can reach more than 20MPa, and the compression strength in 6 hours can reach more than 30MPa by the rapid leak repairing method for the underwater leakage channel of the deepwater building.)

1. A rapid leakage repairing method for an underwater leakage channel of a deep water building is characterized in that a leakage part of the leakage channel is determined, and the leakage width of the leakage part is evaluated:

aiming at the repair of a leakage channel of a 300m deep water building, when the leakage width is more than 5cm and less than or equal to 30cm, firstly fixing a plate at the position of the leakage channel, and performing fine aggregate concrete-set accelerating material two-component grouting through a plate preformed hole;

when the leakage width is more than 2cm and less than or equal to 5cm, firstly fixing the plate at the position of the leakage channel, and then performing cement mortar material-set accelerating material two-component grouting through the reserved hole of the plate;

when the leakage width is more than 0cm and less than or equal to 2cm, the plate is fixed at the position of the leakage channel, and then cement-based grouting material-set accelerating material two-component grouting is carried out through the preformed hole of the plate.

2. The method for rapidly repairing leakage of underwater leakage channel of deep water building as claimed in claim 1, wherein the maximum tensile stress of the plate is calculated as follows:

wherein the maximum tensile stress born by the plate is sigma_{max, plate}The unit Pa; m is the bending moment born by the plate, and the unit is N.m; w is the cross-sectional resistance moment of the sheet material, unit m³(ii) a The compressive stress of water is sigma_{Water (W)}The unit Pa; ρ is the density of water in kg/m³(ii) a g is gravity acceleration, and 10N/kg is taken; h is the depth of water in m; t is the thickness of the sheet, m, l is the width of the leak path, cm.

3. The method for rapidly repairing leakage of underwater leakage passage of deep water building as claimed in claim 1, wherein the thickness of said plate is calculated as follows:

wherein the maximum tensile stress born by the plate is sigma_{max, plate}The unit Pa; ρ is the density of water in kg/m³(ii) a g is gravity acceleration, and 10N/kg is taken; h is the depth of water, and the unit m, l is the width of the leakage channel, and the unit cm;

and 1.1, selecting the safety coefficient of the thickness of the plate, wherein the thickness of the plate is less than 0.1 m.

4. The method for rapidly repairing leakage of underwater leakage passage of deep water building as claimed in claim 1, wherein said plate is stainless steel plate or composite plate.

5. The method for rapidly repairing leakage of underwater leakage passage of deep water building as claimed in claim 1 or 4, wherein said plates have modular rapid splicing function, and said plates are spliced by means of slot splicing and bolt fastening, and are connected into a whole by means of splicing units.

6. The method for rapidly repairing the leakage of the underwater leakage channel of the deep water building as claimed in claim 1, wherein the fine aggregate concrete-accelerating material two-component grouting material comprises the following components: ferro-aluminate cement, fly ash, bentonite, sodium zeolite, river sand, fine stone and lithium sulfate.

7. The method for rapidly repairing the leakage of the underwater leakage passage of the deep water building as claimed in claim 1, wherein the cement mortar material-set accelerating material two-component grouting material comprises the following components: ferro-aluminate cement, fly ash, bentonite, sodium zeolite, river sand and lithium sulfate.

8. The method for rapidly repairing the leakage of the underwater leakage passage of the deep water building as claimed in claim 1, wherein the cement-based grouting material-accelerating material two-component grouting material comprises the following components: ferrous aluminate cement, fly ash, bentonite, sodium zeolite and lithium sulfate.

9. The method for rapidly repairing the leakage of the underwater leakage passage of the deep water building as claimed in claim 1, wherein the fine aggregate concrete, the cement mortar material and the cement-based grouting material have the characteristics of rapid hardening, rapid strength increase under the low-temperature condition of the deep water, micro-expansion, high fluidity and controllable setting time.

10. The method for rapidly repairing the leakage of the underwater leakage passage of the deep water building as claimed in claim 1, wherein the compression strength of the fine aggregate concrete, the cement mortar material and the cement-based grouting material can reach more than 20MPa within 3 hours and more than 30MPa within 6 hours.

Technical Field

The invention relates to water conservancy and hydropower engineering, in particular to a quick leakage repairing method for an underwater leakage channel of a deepwater building.

Background

The difficulty in repairing underwater buildings is that the underwater concrete structure is difficult to repair and the construction precision is low. When the water depth is less than 60m, a general diver can enter the water to carry out inspection, observe the defect position and determine a repair scheme; when the water depth is more than 60m, workers are difficult to enter deeper positions for inspection under the high water pressure condition, and the defect positions are hidden and difficult to observe, so that the difficulty of crack and leakage repairing work is high. For the defect detection of deep water buildings, modern technological means are needed, a remote control submersible is adopted, and modern sound, light and electric technologies are applied to carry out detection through special equipment such as an underwater television, sonar and the like. Currently, a remote-controlled unmanned submersible mainly comprises: the system comprises a power propeller, a remote control electronic communication device, a black-white or color camera, a camera pitching tripod head, a user peripheral sensor interface, a real-time online display unit, a navigation positioning device, an automatic rudder navigation unit, an auxiliary illuminating lamp, a Kevlar zero-buoyancy towing cable and other unit components, and can realize detection of underwater leakage and crack repairing positions. The remote control submersible can not only finish the early-stage inspection work, but also finish the preset action requirement to carry out underwater construction operation. However, for the defects of the building under the deep water high pressure condition, even if workers can accurately position the leakage position by means of the existing technological means, the rapid construction of the underwater leakage channel of the deep water building is difficult to carry out without a complete construction process.

Disclosure of Invention

The invention aims to provide a rapid leakage repairing method for an underwater leakage channel of a deep water building, which determines the thickness of a plate according to the depth and the width of leakage, adopts a plate with proper thickness to be fixed at the position of the leakage channel, and carries out two-component grouting through a plate preformed hole so as to be suitable for rapid construction of crack leakage repairing of various widths of 300m deep water buildings.

The invention provides a rapid leakage repairing method for an underwater leakage channel of a deep water building, which comprises the following steps of determining the leakage part of the leakage channel, evaluating the leakage width of the leakage part:

aiming at the repair of a leakage channel of a 300m deep water building, when the leakage width is more than 5cm and less than or equal to 30cm, firstly fixing a plate at the position of the leakage channel, and performing fine aggregate concrete-set accelerating material two-component grouting through a plate preformed hole;

when the leakage width is more than 2cm and less than or equal to 5cm, firstly fixing the plate at the position of the leakage channel, and then performing cement mortar material-set accelerating material two-component grouting through the reserved hole of the plate;

when the leakage width is more than 0cm and less than or equal to 2cm, the plate is fixed at the position of the leakage channel, and then cement-based grouting material-set accelerating material two-component grouting is carried out through the preformed hole of the plate.

Preferably, the method for calculating the maximum tensile stress borne by the plate is as follows:

wherein the maximum tensile stress born by the plate is sigma_{max, plate}The unit Pa; m is the bending moment born by the plate, and the unit is N.m; w is the cross-sectional resistance moment of the sheet material, unit m³(ii) a The compressive stress of water is sigma_{Water (W)}The unit Pa; ρ is the density of water in kg/m³(ii) a g is gravity acceleration, and 10N/kg is taken; h is the depth of water in m; t is the thickness of the sheet, m, l is the width of the leak path, cm.

Preferably, the thickness of the plate is calculated as follows:

wherein the maximum tensile stress born by the plate is sigma_{max, plate}The unit Pa; ρ is the density of water in kg/m³(ii) a g is gravity acceleration, and 10N/kg is taken; h is the depth of water, and the unit m, l is the width of the leakage channel, and the unit cm; and 1.1, selecting the safety coefficient of the thickness of the plate, wherein the thickness of the plate is less than 0.1 m.

Preferably, the plate is a stainless steel plate or a composite material plate.

Preferably, the plates have a modularized rapid splicing function, and the plates are spliced in a clamping groove and fixed by bolts and are connected into a whole through the splicing units.

Preferably, the fine aggregate concrete-accelerating material two-component grouting material comprises the following components: ferro-aluminate cement, fly ash, bentonite, sodium zeolite, river sand, fine stone and lithium sulfate.

Preferably, the cement mortar material-setting accelerator two-component grouting material comprises the following components: ferro-aluminate cement, fly ash, bentonite, sodium zeolite, river sand and lithium sulfate.

Preferably, the cement-based grouting material-accelerating material bi-component grouting material comprises the following components: ferrous aluminate cement, fly ash, bentonite, sodium zeolite and lithium sulfate.

Preferably, the fine aggregate concrete, the cement mortar material and the cement-based grouting material have the characteristics of rapid hardening, rapid strength increase under deep water and low temperature conditions, micro-expansion, high fluidity and controllable setting time.

Preferably, the compression strength of the fine aggregate concrete, the cement mortar material and the cement-based grouting material can reach more than 20MPa within 3 hours, and the compression strength of the fine aggregate concrete, the cement mortar material and the cement-based grouting material can reach more than 30MPa within 6 hours.

The invention provides a rapid leakage repairing method for an underwater leakage channel of a deep water building, which comprises the following steps of determining the leakage part of the leakage channel, evaluating the leakage width of the leakage part: aiming at the repair of a leakage channel of a 300m deep water building, when the leakage width is more than 5cm and less than or equal to 30cm, firstly fixing a plate at the position of the leakage channel, and performing fine aggregate concrete-set accelerating material two-component grouting through a plate preformed hole; when the leakage width is more than 2cm and less than or equal to 5cm, firstly fixing the plate at the position of the leakage channel, and then performing cement mortar material-set accelerating material two-component grouting through the reserved hole of the plate; when the leakage width is more than 0cm and less than or equal to 2cm, the plate is fixed at the position of the leakage channel, and then cement-based grouting material-set accelerating material two-component grouting is carried out through the preformed hole of the plate. The invention determines the thickness of the plate according to the depth and the width of the leakage, adopts the plate with proper thickness to be fixed at the position of the leakage channel, and carries out double-component grouting through the preformed hole of the plate, thereby being suitable for the rapid construction of crack leakage repairing of various widths of 300m deep water buildings.

The embodiment result shows that the compression strength of the fine aggregate concrete, the cement mortar material and the cement-based grouting material in 3 hours can reach more than 20MPa, and the compression strength in 6 hours can reach more than 30MPa by the rapid leak repairing method for the underwater leakage channel of the deepwater building.

Drawings

FIG. 1 is a schematic view of the whole process of plugging and mending leakage of an underwater leakage passage according to the present invention;

FIG. 2 is a schematic diagram of the underwater robot for placing plates and grouting a leakage channel according to the invention;

FIG. 3 is a schematic view of a spliced board for different leakage diseases according to the present invention;

FIG. 4 is a schematic view of an irregular crack splice plate of the present invention;

FIG. 5 is a schematic view showing that an elastic sealing layer is arranged around the plugging sheet material according to the present invention;

fig. 6 shows a preset pattern of the grout holes and the grout outlet of the plugging plate of the present invention.

Detailed Description

The invention provides a rapid leakage repairing method for an underwater leakage channel of a deep water building, which comprises the following steps of determining the leakage part of the leakage channel, evaluating the leakage width of the leakage part:

aiming at the repair of a leakage channel of a 300m deep water building, when the leakage width is more than 5cm and less than or equal to 30cm, firstly fixing a plate at the position of the leakage channel, and performing fine aggregate concrete-set accelerating material two-component grouting through a plate preformed hole;

when the leakage width is more than 2cm and less than or equal to 5cm, firstly fixing the plate at the position of the leakage channel, and then performing cement mortar material-set accelerating material two-component grouting through the reserved hole of the plate;

when the leakage width is more than 0cm and less than or equal to 2cm, the plate is fixed at the position of the leakage channel, and then cement-based grouting material-set accelerating material two-component grouting is carried out through the preformed hole of the plate.

Preferably, the underwater leakage channel of the water building is rapidly repaired and observed by an underwater robot.

Preferably, the plate is a stainless steel plate or a composite material plate, the stainless steel plate is preferably Q235, and the composite material plate is preferably a high-strength fiber concrete material plate.

Aiming at a leakage channel with the water depth of h and the width of l, the invention adopts the following method:

pressure stress sigma of water_{Water (W)}＝ρ·g·h

Wherein the water pressure stress is sigma when the water depth is h_{Water (W)}The unit Pa; ρ is the density of water in kg/m³(ii) a g is gravity acceleration, and 10N/kg is taken; h is the depth of water in m.

Calculating the maximum bending moment of the span by taking the plate with unit length

Wherein M is the bending moment borne by the plate, and the unit is N.m; q is the uniform load in N/m.

Adopting a method of sealing before plugging, adopting that the section of a plate is rectangular, and when the thickness of the plate is t, calculating the inertia moment

Wherein I is the section moment of inertia of the sheet material, unit m⁴(ii) a l is the unit length of the plate, unit m; t is the thickness of the sheet, in m;

the cross-sectional resistance moment of the sheet material is

Wherein W is the cross-sectional resistance moment of the sheet material, unit m³。

Maximum tensile stress to which the sheet is subjected

Wherein the maximum tensile stress to which the sheet is subjected is σ_{maxBoard (C)}In Pa.

Thickness requirement of selected plate

In order to reduce the difficulty of the operation of the plate in water, the thickness of the plate is less than 0.1 m.

Preferably, when the leakage width is within the range of 10 cm-30 cm, a plate with a proper thickness is selected, the thickness of the plate is determined according to the depth and the width of leakage, the plate with the proper thickness is fixed at the position of the leakage channel, and the fine aggregate concrete-accelerant double-component grouting is carried out through a plate preformed hole;

preferably, when the leakage width is within the range of more than 5cm and less than or equal to 10cm, a plate with a proper thickness is selected, the thickness of the plate is determined according to the depth and the width of leakage, the plate with the proper thickness is fixed at the position of the leakage channel, and then the fine aggregate concrete-accelerant double-component grouting is carried out through the reserved hole of the plate;

preferably, when the leakage width is in the range of more than 2cm to less than or equal to 5cm, a plate with a proper thickness is selected, the thickness of the plate is determined according to the depth and the width of leakage, the plate with the proper thickness is fixed at the position of the leakage channel, and then the cement mortar material-coagulant bi-component grouting is carried out through the preformed hole of the plate;

preferably, when the leakage width is in the range from more than 0 to less than or equal to 2cm, a plate with a proper thickness is selected, the thickness of the plate is determined according to the depth and the width of leakage, the plate with the proper thickness is fixed at the position of the leakage channel, and then the cement-based grouting material-accelerant bi-component grouting is carried out through the preformed hole of the plate;

preferably, for the leakage hazard of the same deepwater casting, the type and the thickness of the plate are selected according to the maximum tensile stress borne by the plate;

preferably, in order to adapt to large-area dispersed leakage diseases with different shapes, the plugging plate has a modular rapid splicing function, and can be freely disassembled and assembled.

Preferably, the splicing form of the plates comprises clamping groove/buckle splicing and bolt splicing, and the plates are connected into a whole through splicing units and mainly aim at a plurality of leakage point diseases with long and wide cracks and large surfaces.

Preferably, the fine aggregate concrete-set accelerator two-component grouting material comprises the following components: ferro-aluminate cement, fly ash, borax, bentonite, sodium zeolite, river sand, fine stone and lithium sulfate; the fine stone concrete-set accelerator two-component grouting material also preferably comprises a water reducing agent.

Preferably, the fine aggregate concrete-accelerator two-component grouting material comprises the following components in parts by mass: 20-30 parts of ferrous aluminate cement, 0.04-0.06 part of borax, 0.2 part of bentonite, 0.2 part of sodium zeolite, 10-20 parts of fly ash, 20-30 parts of river sand (0-5 mm), 20-40 parts of fine stone (5-10 mm), 0-1 part of water reducing agent, 10-15 parts of water, 0.236mol/L of lithium sulfate solution, and the volume ratio of the fine stone concrete to the lithium sulfate solution is 25: 1.

Preferably, the cement mortar material-accelerator two-component grouting material comprises the following components: ferro-aluminate cement, fly ash, borax, bentonite, sodium zeolite, river sand and lithium sulfate;

preferably, the cement mortar material-accelerator two-component grouting material comprises the following components in parts by mass: 15-25 parts of iron aluminate cement, 0.04-0.06 part of borax, 0.2 part of bentonite, 0.2 part of sodium zeolite, 10-20 parts of fly ash, 20-30 parts of river sand (0-5 mm), 0-1 part of water reducing agent, 10-15 parts of water, 0.236mol/L lithium sulfate solution, wherein the volume ratio of cement mortar to lithium sulfate solution is 20: 1;

the cement-based grouting material-coagulant two-component grouting material comprises the following components: ferro-aluminate cement, borax, bentonite, sodium zeolite, fly ash, river sand, a water reducing agent, water and lithium sulfate;

preferably, the cement-based grouting material-accelerator two-component grouting material comprises the following components in parts by mass: 15-25 parts of iron aluminate cement, 0.04-0.06 part of borax, 0.2 part of bentonite, 0.2 part of sodium zeolite, 10-20 parts of fly ash, 20-30 parts of river sand (0-5 mm), 0-1 part of water reducing agent, 10-15 parts of water and 0.236mol/L lithium sulfate solution, wherein the volume ratio of a cement base to the lithium sulfate solution is 20: 1;

preferably, the ferro-aluminate cement and the fly ash are used as cementing materials, and the bentonite and the sodium zeolite can adjust the fluidity of the grouting material;

preferably, borax is used as a retarder;

preferably, lithium sulfate acts as a set accelerator to control the setting time of the fine stone concrete.

Preferably, the selected fine aggregate concrete, cement mortar material and cement-based grouting material have the characteristics of low temperature, early strength, high strength, micro-expansion, high fluidity and controllable setting time.

Preferably, the compressive strength of the selected fine aggregate concrete, cement mortar material and cement-based grouting material can reach more than 20MPa within 3 hours, and the compressive strength of the selected fine aggregate concrete, cement mortar material and cement-based grouting material can reach more than 30MPa within 6 hours.

For further illustration of the present invention, the method for rapidly repairing leakage of underwater leakage channel of deep water structure provided by the present invention is described in detail with reference to the following examples, which should not be construed as limiting the scope of the present invention.

Example 1

A method for rapidly repairing leakage of an underwater leakage channel of a deep water building is characterized in that an underwater robot observes that the width of the leakage channel is 30cm, the depth of the leakage channel is 300m, a designed plate is attached to a predetermined leakage position, and finally fine aggregate concrete-coagulant bi-component grouting is carried out through a preformed hole of the plate, a specific plugging method is shown in figure 1, the position of the leakage channel is fixed by the plate with proper thickness, then fine aggregate concrete-coagulant bi-component grouting is carried out through the preformed hole of the plate, the plate is placed by the underwater robot, and the leakage channel grouting schematic diagram is shown in figure 2;

the specific process flow is shown in fig. 2 and 5.

The selection method of the plate comprises the following steps:

pressure stress sigma of water_{Water (W)}＝ρ·g·h＝1×10³×10×300＝3×10⁶Pa

Calculating the maximum bending moment of the span by taking the plate with unit length

The section of the adopted plate is rectangular, and when the thickness of the plate is t, the inertia moment is calculated to be

Wherein I is the section moment of inertia of the sheet material, unit m⁴(ii) a l is the unit length of the plate, unit m; t is the thickness of the sheet, in m;

the cross-sectional resistance moment of the sheet material is

Wherein W is the cross-sectional resisting moment of the plate, unit m³。

Maximum tensile stress to which the sheet is subjected

Wherein the maximum tensile stress born by the plate is sigma_{max, plate}In Pa.

TABLE 1 maximum tensile stress to which sheets of different thicknesses are subjected

Thickness (mm)	16	18	20	25	30	35	45	55	60	70	100
												Stress (MPa)	791	625	506	324	225	165	100	67	56	41	20

When the material of the plate is carbon steel, the ultimate tensile strength born by the carbon steel plate is 205 multiplied by 10⁶Pa, when the thickness of the obtained plate is

The selection requirement of the plate material meets1.1×31.43＝34.573mm<t＝35mm<0.1m, therefore, when the carbon steel plate with the thickness of 35mm is selected, the requirement is met.

For convenient construction, the thickness of the plates is unified to be 35 mm.

In order to adapt to large-area dispersive leakage diseases with different shapes, the plugging plate has a modularized rapid splicing function and can be freely disassembled and assembled;

the splicing form of the plates adopts clamping groove splicing and bolt fixing, the plates are connected into a whole through splicing units, the defects of a plurality of leakage points with longer wider cracks and larger surfaces are mainly overcome, the schematic diagram of the spliced plates with different leakage defects is shown in figure 3, meanwhile, the irregular leakage gaps can be plugged, as shown in figure 4, when plugging is carried out, an elastic sealing layer is arranged around the plugged plates, as shown in figure 5, and as shown in figure 6, the preset type of a grouting hole and a grout outlet hole of the plugged plates is shown.

Performing fine stone concrete material-coagulant bi-component grouting according to the reserved holes of the plates, and selecting ferro-aluminate cement, fly ash, borax, bentonite, natrolite, river sand, fine stone and lithium sulfate as leak-repairing materials, wherein the ferro-aluminate cement and the fly ash are used as cementing materials, and the bentonite and the natrolite can adjust the fluidity of the grouting materials. The method comprises the following steps of (1) controlling the setting time of the fine aggregate concrete by taking borax as a retarder and lithium sulfate as a coagulant, wherein the fine aggregate concrete-coagulant double-component grouting material comprises the following components in parts by mass: 20-30 parts of ferrous aluminate cement, 0.04-0.06 part of borax, 0.2 part of bentonite, 0.2 part of sodium zeolite, 10-20 parts of fly ash, 20-30 parts of river sand (0-5 mm), 20-40 parts of fine stone (5-10 mm), 0-1 part of water reducing agent, 10-15 parts of water, 0.236mol/L of lithium sulfate solution, and the volume ratio of the fine stone concrete to the lithium sulfate solution is 25: 1.

And measuring the compressive strength of the fine aggregate concrete after plugging, wherein the compressive strength can reach more than 20MPa within 3h, and the compressive strength can reach more than 30MPa within 6 h.

Example 2

A method for quickly repairing leakage of underwater leakage channel of deep-water building features that under the observation of underwater robot, the width of leakage channel is 5cm and the depth of leakage channel is 300m, the designed plate is stuck to the leakage position, and the cement-base grouting material-coagulant dual-component grouting is performed through the hole on plate.

The selection method of the plate comprises the following steps:

pressure stress sigma of water_{Water (W)}＝ρ·g·h＝1×10³×10×300＝3×10⁶Pa

Calculating the maximum bending moment of the span by taking the plate with unit length

The section of the adopted plate is rectangular, and when the thickness of the plate is t, the inertia moment is calculated to be

Wherein I is the section moment of inertia of the sheet material, unit m⁴(ii) a l is the unit length of the plate, unit m; t is the thickness of the sheet, in m;

the cross-sectional resistance moment of the sheet material is

Wherein W is the cross-sectional resisting moment of the plate, unit m³。

Maximum tensile stress to which the sheet is subjected

Wherein the maximum tensile stress born by the plate is sigma_{max, plate}Unit P ofa。

When the material of the plate is selected to be carbon steel Q235,

the ultimate tensile strength of the carbon steel plate is 205 multiplied by 10⁶Pa, when the thickness of the obtained plate is

The selection requirement of the plate material meets1.1×5.24＝5.764mm<t＝35mm<0.1m, therefore, when the carbon steel plate Q235 with the thickness of 35mm is selected, the requirement is met.

The method comprises the steps of grouting a cement mortar material-a coagulant double component according to a plate preformed hole, wherein the cement mortar material-the coagulant double component grouting material comprises, by mass, 15-25 parts of iron aluminate cement, 0.04-0.06 part of borax, 0.2 part of bentonite, 0.2 part of sodium zeolite, 10-20 parts of fly ash, 20-30 parts of river sand (0-5 mm), 0-1 part of a water reducing agent, 10-15 parts of water, and a lithium sulfate solution (0.236mol/L), wherein the volume ratio of the cement mortar to the lithium sulfate solution is 20: 1.

And measuring the compressive strength of the cement mortar after plugging, wherein the compressive strength of the cement mortar can reach more than 20MPa after 3 hours, and the compressive strength of the cement mortar can reach more than 30MPa after 6 hours.

Example 3

A method for quickly repairing leakage of underwater leakage channel of deep-water building features that under the observation of underwater robot, the width of leakage channel is 2cm and the depth of leakage channel is 300m, the designed plate is stuck to the leakage position, and the cement-base grouting material-coagulant dual-component grouting is performed through the hole on plate.

The selection method of the plate comprises the following steps:

pressure stress sigma of water_{Water (W)}＝ρ·g·h＝1×10³×10×300＝3×10⁶Pa

Calculating the maximum bending moment of the span by taking the plate with unit length

The section of the adopted plate is rectangular, and when the thickness of the plate is t, the inertia moment is calculated to be

Wherein I is the section moment of inertia of the sheet material, unit m⁴(ii) a l is the unit length of the plate, unit m; t is the thickness of the sheet, in m;

the cross-sectional resistance moment of the sheet material is

Wherein W is the cross-sectional resisting moment of the plate, unit m³。

Maximum tensile stress to which the sheet is subjected

Wherein the maximum tensile stress born by the plate is sigma_{max, plate}In Pa.

When the material of the plate is selected to be carbon steel Q235,

the ultimate tensile strength of the carbon steel plate is 205 multiplied by 10⁶Pa, when the thickness of the obtained plate is

The selection requirement of the plate material meets1.1×2.1＝2.31mm<t＝35mm<0.1m, therefore, when the carbon steel plate Q235 with the thickness of 35mm is selected, the requirement is met.

The method comprises the following steps of performing cement-based grouting material-coagulant bi-component grouting according to a plate preformed hole, wherein the cement-based grouting material-coagulant bi-component grouting material comprises, by mass, 15-25 parts of iron aluminate cement, 0.04-0.06 part of borax, 0.2 part of bentonite, 0.2 part of sodium zeolite, 10-20 parts of fly ash, 20-30 parts of river sand (0-5 mm), 0-1 part of a water reducing agent, 10-15 parts of water and 0.236mol/L of a lithium sulfate solution, and the volume ratio of a cement base to the lithium sulfate solution is 20: 1.

And measuring the compressive strength of the cement-based grouting after plugging, wherein the compressive strength can reach more than 20MPa within 3h, and the compressive strength can reach more than 30MPa within 6 h.

The foregoing is merely a preferred embodiment of the invention and is not intended to limit the invention in any manner. It should be noted that, for those skilled in the art, without departing from the principle of the present invention, several improvements and modifications can be made, and these improvements and modifications should also be construed as the protection scope of the present invention.