CN114837607A - Grouting reinforcement construction process - Google Patents
Grouting reinforcement construction process Download PDFInfo
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- CN114837607A CN114837607A CN202210459453.5A CN202210459453A CN114837607A CN 114837607 A CN114837607 A CN 114837607A CN 202210459453 A CN202210459453 A CN 202210459453A CN 114837607 A CN114837607 A CN 114837607A
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- grouting
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- sealant
- channel
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- 238000000034 method Methods 0.000 title claims abstract description 41
- 238000010276 construction Methods 0.000 title claims abstract description 39
- 230000002787 reinforcement Effects 0.000 title claims abstract description 32
- 238000007789 sealing Methods 0.000 claims abstract description 75
- 238000005553 drilling Methods 0.000 claims abstract description 58
- 239000007788 liquid Substances 0.000 claims abstract description 25
- 238000004080 punching Methods 0.000 claims abstract description 7
- 239000000565 sealant Substances 0.000 claims description 46
- 239000003795 chemical substances by application Substances 0.000 claims description 37
- 239000012530 fluid Substances 0.000 claims description 5
- 230000002596 correlated effect Effects 0.000 claims description 3
- 239000011800 void material Substances 0.000 claims description 2
- 230000014759 maintenance of location Effects 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 10
- 239000011435 rock Substances 0.000 description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- 238000010586 diagram Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000007569 slipcasting Methods 0.000 description 3
- 239000011440 grout Substances 0.000 description 2
- 229920000742 Cotton Polymers 0.000 description 1
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000000875 corresponding effect Effects 0.000 description 1
- 238000007598 dipping method Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229920001228 polyisocyanate Polymers 0.000 description 1
- 239000005056 polyisocyanate Substances 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 235000019353 potassium silicate Nutrition 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/10—Sealing or packing boreholes or wells in the borehole
- E21B33/13—Methods or devices for cementing, for plugging holes, crevices or the like
- E21B33/138—Plastering the borehole wall; Injecting into the formation
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/10—Sealing or packing boreholes or wells in the borehole
- E21B33/13—Methods or devices for cementing, for plugging holes, crevices or the like
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/20—Hydro energy
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
Abstract
The invention discloses a grouting reinforcement construction process which comprises the following steps of punching, wherein a drilling machine pushes a hollow drill rod to punch to form a drill hole with a preset depth, a hole sealing agent is injected, the hole sealing agent is injected into the drill hole through a middle hole of the drill rod, the hole sealing agent fills a gap between the drill hole and the drill rod to form a hole sealing section, the position of the hole sealing agent is adjusted, high-pressure liquid is injected into the drill hole through the drill rod, the high-pressure liquid pushes the hole sealing agent to the preset hole sealing position, grouting is carried out, and the hole sealing agent is hardened and then grouted to the preset grouting pressure of the drill hole. The grouting reinforcement construction process provided by the invention has the advantages of simple process steps, avoidance of repeated disassembly, assembly and switching of construction equipment, good hole sealing effect and convenience for automatic construction.
Description
Technical Field
The invention relates to the technical field of surrounding rock reinforcement, in particular to a grouting reinforcement construction process.
Background
Grouting reinforcement is widely applied to geotechnical engineering as a main surrounding rock reinforcement means. The grouting process comprises the steps of punching, disassembling a drill rod, installing a grouting pipe, sealing holes, connecting a grouting pipeline, grouting and the like. The construction process of the related art mainly has the following problems: the construction process is complex, automation is difficult to realize, and the whole process is realized manually; surrounding rocks needing grouting reinforcement are generally broken and weak, and holes are easy to collapse in the processes of punching, disassembling a drill rod and installing a grouting pipeline, so that the grouting pipeline is failed to be installed; the hole sealing is generally realized by winding cotton yarns on an expansion type hole sealing device or a grouting pipe and dipping adhesive substances such as water, muddy water, water glass and the like, so that the hole sealing process has limited adaptability, the wall of a grouting hole is uneven if surrounding rocks are broken, the tight fit on the wall of the drilling hole is difficult to realize by the hole sealing means, the hole sealing effect is poor, and higher grouting pressure is difficult to realize.
Disclosure of Invention
The present invention is directed to solving, at least to some extent, one of the technical problems in the related art.
Therefore, the embodiment of the invention provides a grouting reinforcement construction process which has the advantages of simple process steps, avoidance of repeated disassembly and assembly switching of construction equipment, good hole sealing effect and convenience in automatic construction.
According to the grouting reinforcement construction process provided by the embodiment of the invention, the grouting reinforcement construction process comprises the following steps:
drilling, wherein a drilling machine pushes a hollow drill rod to drill to form a drill hole with a preset depth;
injecting a sealant into the borehole through the central bore of the drill pipe, the sealant filling a void between the borehole and the drill pipe to form a plugged section;
adjusting the position of the hole sealing agent, injecting high-pressure liquid into the drill hole by the drill rod, and pushing the hole sealing agent to a preset hole sealing position by the high-pressure liquid;
and grouting, namely grouting the drilled hole to a preset grouting pressure after the agent is hardened.
The grouting reinforcement construction process has the advantages of simple process steps, avoidance of repeated disassembly and assembly switching of construction equipment, good hole sealing effect and convenience in automatic construction.
In some embodiments, the drill rod comprises a drill bit, a centering device and a drill rod body, wherein the drill bit is communicated with the drill rod body, the centering device is arranged in the middle of the drill rod body, and a grouting channel is arranged in the drill rod body and is communicated with a drill box of the drilling machine.
In some embodiments, the holder is a helix having an outer diameter corresponding to an outer diameter of the drill bit.
In some embodiments, a flow mixer is arranged at one end of the grouting channel, which is far away from the drill bit.
In some embodiments, the drill box is a three-channel drill box, the first channel and the second channel of the three-channel drill box are used for injecting the sealant, the third channel of the three-channel drill box is used for injecting the high-pressure liquid and the grouting slurry, and the three-channel drill box is communicated with a grouting pump.
In some embodiments, the sealant is a two-component sealant that is mixed by the flow mixer to form a non-newtonian fluid.
In some embodiments, the grouting passage is provided with an opening at an end of the drill rod body adjacent the drill bit, the sealant returning from the opening to fill an annular space between the borehole and the drill rod.
In some embodiments, the length of the hole sealing section is positively correlated with the preset grouting pressure.
In some embodiments, before the sealant is cured, a grouting pump of the drilling machine is started, and after the grouting pump presses the high-pressure liquid into a drill rod through the drilling machine, the high-pressure liquid pushes the sealant outwards along the axial direction of the drill hole to a preset hole sealing position.
In some embodiments, the grouting pump is turned off after the sealant reaches a preset sealing position, and the grouting pump is turned on after the sealant is hardened.
In some embodiments, after the selected grout addition location, the drilling rig automatically completes the drilling, injecting the sealant, adjusting the sealant location, and grouting steps.
Drawings
Fig. 1 is a schematic structural view of a drill pipe for a grouting reinforcement construction process according to an embodiment of the present invention.
Fig. 2 is a schematic diagram of a punching step of a grouting reinforcement construction process according to an embodiment of the invention.
Fig. 3 is a schematic diagram of a sealant injecting step of a grouting reinforcement construction process according to an embodiment of the invention.
FIG. 4 is a schematic diagram of a step of adjusting the position of the sealant in the grouting reinforcement construction process according to the embodiment of the invention.
Fig. 5 is a schematic view of a grouting step of a grouting reinforcement construction process according to an embodiment of the present invention.
Reference numerals: 1. a drill stem; 11. a drill bit; 12. a centering device; 13. grouting a channel; 2. drilling a box; 3. and (3) a hole sealing agent.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.
According to the grouting reinforcement construction process disclosed by the embodiment of the invention, as shown in fig. 1-5, the grouting reinforcement construction process comprises the following steps:
punching, wherein a drilling machine pushes a hollow drill rod 1 to punch to form a drill hole with a preset depth;
injecting a hole sealing agent 3, injecting the hole sealing agent 3 into the drill hole through the hollow core of the drill rod 1, and filling the gap between the drill hole and the drill rod 1 with the hole sealing agent 3 to form a hole sealing section; the hollow drill rod 1 can avoid the hole collapse phenomenon easily occurring in the processes of disassembling the drill rod 1 and installing a grouting pipeline as a grouting pipe. The mesopore is the hole that the hollow of drilling rod extends along the axis of drilling rod 1 promptly, injects into the drilling through the mesopore of drilling rod 1 hole sealing agent 3, and hole sealing section that hole sealing agent 3 flowed out from drilling rod 1 and got into the space between drilling and drilling rod 1 and formed is tight laminating hole sealing effectual to drilling wall and drilling rod 1, can realize higher slip casting pressure.
Adjusting the position of the hole sealing agent 3, injecting high-pressure liquid into the drill hole by the drill rod 1, and pushing the hole sealing agent 3 to a preset hole sealing position by the high-pressure liquid; the high-pressure liquid is injected into the drill hole by the drill rod 1, the hole sealing agent 3 in the drill rod 1 is removed by the high-pressure liquid, the hole sealing agent 3 can be pushed to be tightly attached to the wall of the drill hole to adapt to the conditions of surrounding rock breaking and different concave-convex of the wall of the grouting hole, and the hole sealing effect is better achieved.
Grouting, namely grouting the hole to a preset grouting pressure after the hole sealing agent 3 is hardened. Grouting into the drill hole through the hollow drill rod 1 after the hole sealing agent 3 is hardened without disassembling the drill rod 1, so that the grouting process is simplified, and repeated disassembly and assembly of construction equipment are avoided after the drilling, the hole sealing and the grouting are completed through the same hollow drill rod 1, so that the automatic operation is facilitated. The automatic operation of the drilling machine can be realized by the controller to control the drill rod 1 and the drill box 2 in a centralized way.
The grouting reinforcement construction process has the advantages of simple process steps, avoidance of repeated dismounting and switching of construction equipment, good hole sealing effect and convenience in automatic construction.
In some embodiments, as shown in fig. 1, the drill rod 1 comprises a drill bit 11, a centering device 12 and a drill rod 1 body, the drill bit 11 is communicated with the drill rod 1 body, the centering device 12 is arranged in the middle of the drill rod 1 body, a grouting channel 13 is arranged in the drill rod 1 body, and the grouting channel 13 is communicated with the drill box 2 of the drilling machine.
Specifically, the material in the drilling box 2 of rig is carried to drill bit 11 department through drilling rod 1 body to slip casting passageway 13 and flows out and get into in the drilling, need not to dismantle drilling rod 1 after drilling of drilling rod 1 is accomplished and can carry out the slip casting through drilling rod 1, simplifies the hole collapse that technology raising efficiency can also avoid dismantling drilling rod 1 and cause. The centering device 12 and the drill bit 11 cooperate to keep the axis of the drill rod 1 consistent with the axis of the drilled hole and to avoid eccentricity of the drill rod 1. The drill bit 11 may be a disposable bit. The central hole of the hollow drill rod 1 is a grouting channel 13.
In some embodiments, as shown in FIG. 1, the centralizer 12 is a helical structure having an outer diameter that corresponds to the outer diameter of the drill bit 11.
Specifically, hold well ware 12 cover and establish the middle part at drilling rod 1 body, the helicla flute of drilling rod 1 process of punching of being convenient for discharge by helical structure, helical structure's external diameter is the same with the external diameter of drill bit 11, and helical structure plays the supporting role to drilling rod 1 and avoids the axis direction and the drilling wall contact of drilling rod 1 skew drilling.
In some embodiments, a flow mixer is provided at the end of the grouting channel 13 remote from the drill bit 11.
Specifically, the mixed flow is used for fully mixing the hole sealing agent 3, and the mixed flow comprises a central shaft and a spiral blade which are fixedly connected into a whole, wherein the central shaft is coaxial with the drill rod 1, and the spiral blade is arranged around the central shaft.
In some embodiments, the drill box 2 is a triple channel drill box 2, the first and second channels of the triple channel drill box 2 are used for injecting the sealant 3, the third channel of the triple channel drill box 2 is used for injecting high pressure liquid and grouting, and the triple channel drill box 2 is communicated with a grouting pump. The hole sealing agent components of the first channel and the second channel enter the drill rod and then are mixed by the flow mixer to enter the grouting channel of the drill rod, and the high-pressure liquid and the grouting liquid of the third channel enter the grouting channel of the drill rod.
Therefore, the hole sealing agent enters the drill rod through the first channel and the second channel respectively, so that the situation that the components of the hole sealing agent react and harden in advance to block the drill box can be avoided, the third channel is used for injecting high-pressure liquid and grouting, so that the situation that residual hole sealing agent is contacted with the high-pressure liquid and grouting can be avoided, and the grouting pressure and the grouting effect are guaranteed.
In some embodiments, as shown in fig. 3, the sealant 3 is a two-component sealant 3, and the two-component sealant 3 is mixed by a flow mixer to form a non-newtonian fluid.
Specifically, the two-component hole sealing agent 3 comprises a component A and a component B, wherein A, B in fig. 3 respectively indicates the component A and the component B, the component A comprises a silicate aqueous solution, a curing agent and a catalyst, and the component B comprises polyisocyanate and a viscosity reducer. The component A and the component B are mixed uniformly by the mixer and react to form non-Newtonian fluid, the sealant 3 flows into a gap between a drill hole and the drill rod 1 based on the self-flowing characteristic, the hole wall can be tightly attached to the hole wall even if the hole wall is uneven, and the sealant 3 and surrounding rock have good bonding performance and can realize a better hole sealing effect.
In some embodiments the grouting channel 13 is provided with an opening at the end of the body of the drill rod 1 adjacent the drill bit 11, and the sealant 3 returns out of the opening to fill the annular space between the borehole and the drill rod 1.
Therefore, the hole sealing agent flows out of the grouting channel of the drill rod body, the hole sealing agent is blocked by surrounding rocks at the drill bit and flows reversely to enter an annular gap between the drill hole and the drill rod, and the hole sealing agent moves towards the direction of the drilling machine along the annular gap, so that the hole sealing effect is improved.
In some embodiments, the length of the pore sealing segment is positively correlated to the predetermined grouting pressure.
Therefore, the length of the hole sealing section is designed according to the preset grouting pressure requirement, and the higher the preset grouting pressure is, the longer the hole sealing section is, so as to ensure the sealing effect of the hole sealing section on the drill rod and the drill hole.
In some embodiments, the grouting pump of the drilling machine is started before the sealing agent 3 is cured, and after the grouting pump presses high-pressure liquid into the drill rod 1 through the drilling machine, the high-pressure liquid pushes the sealing agent 3 outwards to a preset sealing position along the axial direction of the drill hole.
Specifically, high-pressure liquid is water or other fluid with good fluidity and non-reaction with the hole sealing agent 3, high-pressure water is injected into the drill rod 1 through a third channel of the drill box 2, the hole sealing agent 3 in an annular gap between the drill rod 1 and a drill hole moves along the axial direction of the drill rod 1 under the pushing of the high-pressure water, the hole sealing agent 3 moves outwards, namely in the direction of the drilling machine, and the high-pressure water can enable the hole sealing agent 3 to be combined with surrounding rocks more uniformly.
In some embodiments, the grouting pump is turned off after the sealant 3 reaches the preset sealant position, and the grouting pump is turned on after the sealant 3 is hardened. The sealant 3 is cured for about 1 minute.
Therefore, the situation that the grouting pump applies pressure to the hole sealing agent in the drill hole to influence solidification and hardening of the hole sealing agent can be avoided, and the grouting pump is started after the hole sealing agent is hardened to smoothly perform grouting.
In some embodiments, after the selected grout addition location, the drilling rig automatically completes the drilling, injecting the sealant, adjusting the sealant location, and grouting steps.
Specifically, the controller collects data of a drilling machine, a sealant and a drill hole, after grouting and positioning are selected, the controller controls the drilling machine to be started, the controller controls the drilling machine to drill according to preset drilling depth data, after the controller detects that the drilling depth meets the preset depth data, the controller controls a drilling box of the drilling machine to open a first channel and a second channel to inject the sealant into the drill rod and controls a mixed sealant in the drill rod to start, after the sealant is injected, the controller controls the drilling box to open a third channel to inject high-pressure liquid into the drill hole to adjust the position of the sealant, after the controller detects that the position of the sealant meets the preset data, the controller controls a grouting pump to be closed and opened, and the controller controls the drilling machine to perform grouting.
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; may be mechanically coupled, may be electrically coupled or may be in communication with each other; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature "under," "beneath," and "under" a second feature may be directly under or obliquely under the second feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
In the present disclosure, the terms "one embodiment," "some embodiments," "an example," "a specific example," or "some examples" and the like mean that a specific feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present disclosure. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Moreover, various embodiments or examples and features of various embodiments or examples described in this specification can be combined and combined by one skilled in the art without being mutually inconsistent.
Although embodiments of the present invention have been shown and described, it is understood that the above embodiments are illustrative and not to be construed as limiting the present invention and that many changes, modifications, substitutions and alterations can be made in the above embodiments by one of ordinary skill in the art without departing from the scope of the present invention.
Claims (11)
1. The grouting reinforcement construction process is characterized by comprising the following steps of:
drilling, wherein a drilling machine pushes a hollow drill rod to drill to form a drill hole with a preset depth;
injecting a sealant into the borehole through the central bore of the drill pipe, the sealant filling a void between the borehole and the drill pipe to form a plugged section;
adjusting the position of the hole sealing agent, injecting high-pressure liquid into the drill hole by the drill rod, and pushing the hole sealing agent to a preset hole sealing position by the high-pressure liquid;
and grouting, wherein after the hole sealing agent is hardened, grouting is carried out on the drilled hole until the grouting pressure is preset.
2. The grouting reinforcement construction process according to claim 1, wherein the drill rod comprises a drill bit, a centering device and a drill rod body, the drill bit is communicated with the drill rod body, the centering device is arranged in the middle of the drill rod body, a grouting channel is arranged in the drill rod body, and the grouting channel is communicated with a drill box of the drilling machine.
3. The grouting reinforcement construction process according to claim 2, wherein the center retainer is a spiral structure, and the outer diameter of the spiral structure is consistent with the outer diameter of the drill bit.
4. The grouting reinforcement construction process according to claim 2, wherein a flow mixer is arranged at one end of the grouting channel, which is far away from the drill bit.
5. The grouting reinforcement construction process according to claim 4, wherein the drill box is a three-channel drill box, a first channel and a second channel of the three-channel drill box are used for injecting the sealant, a third channel of the three-channel drill box is used for injecting the high-pressure liquid and the grouting, and the three-channel drill box is communicated with a grouting pump.
6. The grouting reinforcement construction process according to claim 5, wherein the sealant is a two-component sealant, and the two-component sealant is mixed by the flow mixer to form a non-Newtonian fluid.
7. The grouting reinforcement construction process according to claim 4, wherein the grouting channel is provided with an opening at one end of the drill rod body adjacent to the drill bit, and the sealant returns out of the opening to fill an annular gap between the drill hole and the drill rod.
8. The grouting reinforcement construction process according to claim 1, wherein the length of the hole sealing section is positively correlated with the preset grouting pressure.
9. The grouting reinforcement construction process according to claim 1, wherein a grouting pump of the drilling machine is started before the sealant is cured, and after the high-pressure liquid is pressed into a drill rod by the grouting pump through the drilling machine, the high-pressure liquid pushes the sealant outwards to a preset hole sealing position along the axial direction of the drill hole.
10. The grouting reinforcement construction process according to claim 9, wherein the grouting pump is turned off after the sealant reaches a preset sealing position, and the grouting pump is turned on after the sealant is hardened.
11. The grouting reinforcement construction process according to claim 1, wherein after the grouting and retention position is selected, the drilling machine automatically completes the steps of punching, injecting the sealant, adjusting the sealant position and grouting.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210459453.5A CN114837607B (en) | 2022-04-27 | 2022-04-27 | Grouting reinforcement construction process |
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| CN202210459453.5A CN114837607B (en) | 2022-04-27 | 2022-04-27 | Grouting reinforcement construction process |
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| CN114837607B CN114837607B (en) | 2024-04-05 |
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| 李义敬;杨磊;胡胜勇;周福宝;周二元;: "煤层钻孔长距离压气带压注浆封孔技术研究", 中国煤炭, no. 08, pages 105 - 108 * |
| 王超;李杰;姚显君;: "瓦斯抽放钻孔封孔工艺改进", 煤炭技术, no. 05, pages 234 - 235 * |
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