Construction process of anti-floating anchor rod in complex stratum and air intake and exhaust grouting pipeline system
阅读说明：本技术 一种复杂地层抗浮锚杆的施工工艺及进排气注浆管路系统 (Construction process of anti-floating anchor rod in complex stratum and air intake and exhaust grouting pipeline system ) 是由 姚子豪 姚寿礼 于 2019-11-26 设计创作，主要内容包括：一种复杂地层抗浮锚杆的施工工艺及进排气注浆管路系统,包括如下步骤：S1：将锚杆钻机就位,锚杆钻机的钻杆为中空钻杆；S2：将中空钻杆顶部的注浆管道通过管路与空压机相连；S3：启动锚杆钻机钻孔,钻孔过程中同时启动空压机,空压机产生的高压气体通过管路沿中空钻杆顶部至底部钻头出浆口排出,将孔内土体吹散,S4：将中空钻杆的注浆管道通过管路与砂浆泵相连,砂浆泵工作,S5：将中空钻杆顶部的注浆管道通过管路与空压机相连,空压机产生的高压气体将注浆管道及中空钻杆内的砂浆从底部钻头出浆口吹出清理干净。增加了抗浮锚杆的强度,提高了施工效率,改善了施工环境,降低了施工成本。(A construction process of an anti-floating anchor rod in a complex stratum and an air intake and exhaust grouting pipeline system comprise the following steps: s1: positioning an anchor rod drilling machine, wherein a drill rod of the anchor rod drilling machine is a hollow drill rod; s2: connecting a grouting pipeline at the top of the hollow drill rod with an air compressor through a pipeline; s3: starting jumbolter drilling, the drilling in-process starts the air compressor machine simultaneously, and the high-pressure gas that the air compressor machine produced passes through the pipeline and discharges along cavity drilling rod top to bottom drill bit grout outlet, blows away the downthehole soil body, S4: the grouting pipeline of the hollow drill rod is connected with a mortar pump through a pipeline, the mortar pump works, and S5: and (3) connecting the grouting pipeline at the top of the hollow drill rod with an air compressor through a pipeline, and blowing out and cleaning the grouting pipeline and mortar in the hollow drill rod from a bottom drill bit grout outlet by high-pressure gas generated by the air compressor. The strength of the anti-floating anchor rod is increased, the construction efficiency is improved, the construction environment is improved, and the construction cost is reduced.)
1. The construction process of the anti-floating anchor rod in the complex stratum is characterized in that: the method comprises the following steps:
s1: positioning an anchor rod drilling machine, wherein a drill rod of the anchor rod drilling machine is a hollow drill rod;
s2: connecting a grouting pipeline at the top of the hollow drill rod with an air compressor through a pipeline;
s3: starting a jumbolter to drill a hole, starting an air compressor at the same time during drilling, discharging high-pressure gas generated by the air compressor along a drill bit grout outlet from the top to the bottom of a hollow drill rod through a pipeline, blowing away soil in the hole, discharging the blown-away soil upwards to the ground outside the hole from a gap between the hollow drill rod and the hole wall, forming the hole in a dry drilling mode, continuously supplying air and cleaning the hole after drilling to a designed depth, and closing the air compressor after cleaning the hole;
s4: connecting a grouting pipeline of a hollow drill rod with a mortar pump through a pipeline, pumping the stirred M30 cement mortar into the hollow drill rod through the grouting pipeline through the pipeline, grouting the drilled hole through a drill bit grout outlet under pressure, slowly lifting the hollow drill rod while pouring the M30 cement mortar, and closing the mortar pump to stop the mortar pumping work after the hollow drill rod is lifted to the hole opening;
s5: connecting a grouting pipeline at the top of the hollow drill rod with an air compressor through a pipeline, and blowing out and cleaning mortar in the grouting pipeline and the hollow drill rod from a bottom drill bit grout outlet by high-pressure gas generated by the air compressor;
s6: timely inserting an anchor rod into the drill hole filled with the M30 cement mortar;
s7: after the anchor rod is placed, moving an anchor rod drilling machine to carry out construction of the next anchor rod;
s8: and after the M30 cement mortar shrinks and settles, manually supplementing grouting.
2. The construction process of the anti-floating anchor rod in the complex stratum as claimed in claim 1, wherein: the jumbolter is a transverse hydraulic jacking pressurization type jumbolter.
3. The construction process of the anti-floating anchor rod in the complex stratum as claimed in claim 1, wherein: the air compressor is a 0.8MP6 cubic air compressor.
4. An air intake and exhaust grouting pipeline system for realizing the construction process of claim 1, which is characterized in that: the slurry outlet pipe is connected with the other end of the slurry outlet pipe, the other two interfaces of the three-way pipe A are respectively connected with the slurry inlet pipe and the air pipe, the other end of the slurry inlet pipe is connected with the mortar pump, the air pipe is provided with an air inlet valve, the other end of the air pipe is connected with the three-way pipe B, the other two interfaces of the three-way pipe B are respectively connected with the air inlet pipe and the air exhaust pipe, the other end of the air inlet pipe is connected with the air compressor, and the air exhaust pipe is provided with an.
5. The air intake and exhaust grouting pipeline system of the anti-floating anchor rod in the complex stratum as claimed in claim 4, wherein: the other end of the exhaust pipe is connected with a silencer.
6. The air intake and exhaust grouting pipeline system of the anti-floating anchor rod in the complex stratum as claimed in claim 4, wherein: the air compressor is a 0.8MP6 cubic air compressor.
7. The construction process of the air intake and exhaust grouting pipeline system as claimed in claim 4, characterized in that: the method comprises the following steps:
s1: positioning an anchor rod drilling machine, wherein a drill rod of the anchor rod drilling machine is a hollow drill rod;
s2: starting an anchor rod drilling machine to drill a hole, simultaneously starting an air compressor during drilling, opening an air inlet valve, closing an exhaust valve, allowing high-pressure gas generated by the air compressor to enter a hollow drill rod through an air inlet pipe, a three-way pipe B, an air pipe, the air inlet valve, a three-way pipe A, a grout outlet pipe and a grouting pipeline in sequence, discharging the high-pressure gas from the top to the bottom of the hollow drill rod along a grout outlet of a drill bit, blowing off soil in the hole, discharging the blown-off soil upwards to the ground outside the hole from a gap between the hollow drill rod and the hole wall, wherein the drilling mode is dry hole forming, and continuously supplying air and cleaning the hole after;
s3: after hole cleaning is finished, closing the air inlet valve, opening the exhaust valve, and discharging waste gas of the air compressor through the air inlet pipe, the three-way pipe B, the exhaust valve and the exhaust pipe in sequence;
s4: starting a mortar pump, enabling the mortar pump to work, pumping the stirred M30 cement mortar into a hollow drill rod through a mortar inlet pipe, a three-way pipe A, a mortar outlet pipe and a grouting pipeline in sequence, performing pressure grouting into a drilled hole through a drill bit mortar outlet, slowly lifting the hollow drill rod while pouring M30 cement mortar, and closing the mortar pump to stop the pumping work of the mortar after the hollow drill rod is lifted to an orifice;
s5: opening an air inlet valve, closing an air exhaust valve, allowing high-pressure gas generated by an air compressor to enter a hollow drill rod through an air inlet pipe, a three-way pipe B, an air pipe, the air inlet valve, a three-way pipe A, a slurry outlet pipe and a grouting pipeline in sequence, and blowing out and cleaning mortar in the slurry outlet pipe, the grouting pipeline and the hollow drill rod from a bottom drill bit slurry outlet;
s6: timely inserting an anchor rod into the drill hole filled with the M30 cement mortar;
s7: after the anchor rod is placed, moving an anchor rod drilling machine to carry out construction of the next anchor rod;
s8: and after the M30 cement mortar shrinks and settles, manually supplementing grouting.
8. The air intake and exhaust grouting pipeline system of the anti-floating anchor rod in the complex stratum as claimed in claim 7, wherein: the jumbolter is a transverse hydraulic jacking pressurization type jumbolter.
9. The air intake and exhaust grouting pipeline system of the anti-floating anchor rod in the complex stratum as claimed in claim 7, wherein: the air compressor is a 0.8MP6 cubic air compressor.
The technical field is as follows:
the invention relates to the technical field of construction of anti-floating anchor rods in construction engineering, in particular to a construction process of an anti-floating anchor rod in a complex stratum and an air intake, exhaust and grouting pipeline system.
Background art:
the anti-floating anchor rod is anchored in an underground soil layer to resist the buoyancy of underground water for the foundation slab. Along with the high-speed development of economy, the excavation depth of a foundation pit is gradually increased year by year as the construction engineering gradually moves to a high layer, and the construction of the anti-floating anchor rod is also increasingly applied to the engineering, so that the anti-floating anchor rod in the complex stratum is gradually increased year by year, and the factors of energy conservation, environmental protection, emission reduction, effective cost reduction and the like are considered due to the high price of cement, and the construction of the anti-floating anchor rod in the complex stratum and the pressure irrigation process of cement mortar are imperative. The existing cement mortar can be generally divided into M10-M40 cement mortar according to the strength grade, and the M30 cement mortar not only meets the compressive strength of the design requirement, but also enhances the breaking strength of the cement mortar, effectively reduces the construction cost, and achieves the purposes of energy conservation, environmental protection and emission reduction. The construction of anti-floating anchor rods in complex strata increasingly requires the use of M30 cement mortar.
Three construction processes commonly used for the construction of the existing anti-floating anchor rod are as follows:
① roofbolt drilling machine is in place, producing circulating slurry, drilling, cleaning hole with circulating slurry, lifting drill, setting rockbolt, grouting and pulling pipe, secondary grouting, and pure slurry is poured.
② Anchor rod drilling machine is in place, hammering, lifting drilling, setting anchor rod, grouting in hole mouth, secondary grouting, pure cement slurry is poured, the mechanical equipment used in the construction process is mainly a down-the-hole hammer drilling machine, the efficiency of using the down-the-hole hammer to carry out the drilling is high, but the down-the-hole hammer drilling machine is only suitable for pure rock stratum, the down-the-hole hammer drilling machine cannot ensure the verticality and the aperture of the anchor rod due to the working characteristics of the down-the-hole hammer during the construction of complex stratum, the drilling machine cannot ensure the drilling verticality and the aperture of the anchor rod, and the drill jamming and the collapse of the inner hole wall are easy to cause the waste of construction materials and the construction quality cannot be ensured.
③ roofbolt drilling machine is in place, drilling, lifting drilling, lowering anchor rod, grouting and secondary grouting, and pure cement slurry is poured in the machine equipment mainly used by the ordinary auger drilling machine in the construction process.
In conclusion, in the construction process of the conventional anti-floating anchor rod, M30 cement mortar cannot be pressure-poured from the drill rod. Therefore, how to smoothly apply the M30 cement mortar to the construction process of the anti-floating anchor rod in the complex stratum becomes a technical problem to be solved urgently in the industry.
The invention content is as follows:
in order to make up for the defects of the prior art, the invention provides a construction process of an anti-floating anchor rod in a complex stratum and an air inlet and outlet grouting pipeline system, solves the problems of backward construction process, low efficiency, dirty and messy site, high construction cost and the like of the existing anti-floating anchor rod in the complex stratum, realizes the smooth application of M30 cement mortar to the construction of the anti-floating anchor rod in the complex stratum, increases the strength of the anti-floating anchor rod, improves the construction efficiency, improves the construction environment, reduces the construction cost and solves the problems in the prior art.
The technical scheme adopted by the invention for solving the technical problems is as follows:
a construction process of an anti-floating anchor rod in a complex stratum comprises the following steps:
s1: positioning an anchor rod drilling machine, wherein a drill rod of the anchor rod drilling machine is a hollow drill rod;
s2: connecting a grouting pipeline at the top of the hollow drill rod with an air compressor through a pipeline;
s3: starting a jumbolter to drill a hole, starting an air compressor at the same time during drilling, discharging high-pressure gas generated by the air compressor along a drill bit grout outlet from the top to the bottom of a hollow drill rod through a pipeline, blowing away soil in the hole, discharging the blown-away soil upwards to the ground outside the hole from a gap between the hollow drill rod and the hole wall, forming the hole in a dry drilling mode, continuously supplying air and cleaning the hole after drilling to a designed depth, and closing the air compressor after cleaning the hole;
s4: connecting a grouting pipeline of a hollow drill rod with a mortar pump through a pipeline, pumping the stirred M30 cement mortar into the hollow drill rod through the grouting pipeline through the pipeline, grouting the drilled hole through a drill bit grout outlet under pressure, slowly lifting the hollow drill rod while pouring the M30 cement mortar, and closing the mortar pump to stop the mortar pumping work after the hollow drill rod is lifted to the hole opening;
s5: connecting a grouting pipeline at the top of the hollow drill rod with an air compressor through a pipeline, and blowing out and cleaning mortar in the grouting pipeline and the hollow drill rod from a bottom drill bit grout outlet by high-pressure gas generated by the air compressor;
s6: timely inserting an anchor rod into the drill hole filled with the M30 cement mortar;
s7: after the anchor rod is placed, moving an anchor rod drilling machine to carry out construction of the next anchor rod;
s8: and after the M30 cement mortar shrinks and settles, manually supplementing grouting.
The jumbolter is a transverse hydraulic jacking pressurization type jumbolter.
The air compressor is a 0.8MP6 cubic air compressor.
The utility model provides a realize air inlet and exhaust slip casting pipe-line system of above-mentioned construction process, include the grout outlet pipe that links to each other with the slip casting pipeline at cavity drilling rod top, the three-way pipe A is connected to the grout outlet pipe other end, grout inlet pipe and trachea are connected respectively to two other interfaces of three-way pipe A, grout inlet pipe other end connection mortar pump, be equipped with the valve of admitting air on the trachea, three-way pipe B is connected to the trachea other end, intake pipe and blast pipe are connected respectively to two other interfaces of three-way pipe B, the air compressor machine is connected to the other end of intake pipe.
The other end of the exhaust pipe is connected with a silencer.
The air compressor is a 0.8MP6 cubic air compressor.
A construction process of the air intake and exhaust grouting pipeline system comprises the following steps:
s1: positioning an anchor rod drilling machine, wherein a drill rod of the anchor rod drilling machine is a hollow drill rod;
s2: starting an anchor rod drilling machine to drill a hole, simultaneously starting an air compressor during drilling, opening an air inlet valve, closing an exhaust valve, allowing high-pressure gas generated by the air compressor to enter a hollow drill rod through an air inlet pipe, a three-way pipe B, an air pipe, the air inlet valve, a three-way pipe A, a grout outlet pipe and a grouting pipeline in sequence, discharging the high-pressure gas from the top to the bottom of the hollow drill rod along a grout outlet of a drill bit, blowing off soil in the hole, discharging the blown-off soil upwards to the ground outside the hole from a gap between the hollow drill rod and the hole wall, wherein the drilling mode is dry hole forming, and continuously supplying air and cleaning the hole after;
s3: after hole cleaning is finished, closing the air inlet valve, opening the exhaust valve, and discharging waste gas of the air compressor through the air inlet pipe, the three-way pipe B, the exhaust valve and the exhaust pipe in sequence;
s4: starting a mortar pump, enabling the mortar pump to work, pumping the stirred M30 cement mortar into a hollow drill rod through a mortar inlet pipe, a three-way pipe A, a mortar outlet pipe and a grouting pipeline in sequence, performing pressure grouting into a drilled hole through a drill bit mortar outlet, slowly lifting the hollow drill rod while pouring M30 cement mortar, and closing the mortar pump to stop the pumping work of the mortar after the hollow drill rod is lifted to an orifice;
s5: opening an air inlet valve, closing an air exhaust valve, allowing high-pressure gas generated by an air compressor to enter a hollow drill rod through an air inlet pipe, a three-way pipe B, an air pipe, the air inlet valve, a three-way pipe A, a slurry outlet pipe and a grouting pipeline in sequence, and blowing out and cleaning mortar in the slurry outlet pipe, the grouting pipeline and the hollow drill rod from a bottom drill bit slurry outlet;
s6: timely inserting an anchor rod into the drill hole filled with the M30 cement mortar;
s7: after the anchor rod is placed, moving an anchor rod drilling machine to carry out construction of the next anchor rod;
s8: and after the M30 cement mortar shrinks and settles, manually supplementing grouting.
The jumbolter is a transverse hydraulic jacking pressurization type jumbolter.
The air compressor is a 0.8MP6 cubic air compressor.
By adopting the scheme, the traditional construction process is changed, the hollow drill rod is adopted to feed air and slurry, the hollow drill rod enters the rock drill head to drill holes, the holes are formed in a dry mode, no slurry is generated, the construction environment is improved, and the method is suitable for construction of various complex strata; when drilling, high-pressure gas is discharged from the hollow drill rod to the slurry outlet of the drill bit, and soil is blown away and discharged, so that the friction force between the drill rod of the drill bit and the soil is reduced, the temperature of the drill bit is reduced, and the drilling efficiency is improved; the well-stirred M30 cement mortar is pumped into the hollow drill rod through the mortar pump and is subjected to pressure grouting through the drill bit grout outlet, so that the M30 cement mortar is smoothly injected without blockage or collapse, the strength of the anti-floating anchor rod is increased, the construction efficiency is improved, and the construction cost is reduced; the mortar in the mortar outlet pipe and the hollow drill rod is cleaned in time by high-pressure gas of the air compressor, so that pipelines are prevented from being blocked; the design of air inlet and outlet grouting pipeline system is switched by opening and closing the air inlet valve and the air outlet valve, so that hole cleaning, slurry inlet, air outlet and cleaning can be realized quickly, the operation is convenient and quick, time and labor are saved, and the construction efficiency can be greatly improved.
Description of the drawings:
FIG. 1 is a schematic structural diagram of the present invention.
In the figure, 1, a hollow drill rod, 2, a grouting pipeline, 3, a grout outlet pipe, 4, three-way pipes A and 5, a grout inlet pipe, 6, an air pipe, 7, a mortar pump, 8, an air inlet valve, 9, three-way pipes B and 10, an air inlet pipe, 11, an exhaust pipe, 12, an air compressor, 13, a silencer, 14 and an exhaust valve.
The specific implementation mode is as follows:
in order to clearly explain the technical features of the present invention, the following detailed description of the present invention is provided with reference to the accompanying drawings.
A construction process of an anti-floating anchor rod in a complex stratum comprises the following steps:
s1: positioning an anchor rod drilling machine, wherein a drill rod of the anchor rod drilling machine is a hollow drill rod;
s2: connecting a grouting pipeline at the top of the hollow drill rod with an air compressor through a pipeline;
s3: starting a jumbolter to drill, starting an air compressor at the same time during drilling, discharging high-pressure gas generated by the air compressor along a drill bit grout outlet from the top to the bottom of a hollow drill rod through a pipeline, blowing away soil in a hole, reducing the friction force between the drill rod of the drill bit and the soil, reducing the temperature of the drill bit, improving the drilling efficiency, discharging the blown-away soil upwards to the ground outside the hole from a gap between the hollow drill rod and the hole wall, forming the hole in a dry drilling mode without generating slurry, being suitable for construction of various complicated stratums, continuously supplying air and cleaning the hole after drilling to a designed depth, and closing the air compressor after cleaning the hole;
s4: connecting a grouting pipeline of a hollow drill rod with a mortar pump through a pipeline, operating the mortar pump, pumping the stirred M30 cement mortar into the hollow drill rod through the grouting pipeline through the pipeline, grouting the pressure in the drilled hole through a drill bit outlet, slowly lifting the hollow drill rod while pouring the M30 cement mortar, preventing the hollow drill rod from being lifted too fast to cause slurry necking or hole collapse, and closing the mortar pump to stop the mortar pumping operation after the hollow drill rod is lifted to an orifice;
s5: connecting a grouting pipeline at the top of the hollow drill rod with an air compressor through a pipeline, and blowing out and cleaning the grouting pipeline and mortar in the hollow drill rod from a bottom drill bit grout outlet by high-pressure gas generated by the air compressor to prevent the pipeline from being blocked;
s6: timely inserting an anchor rod into the drill hole filled with the M30 cement mortar;
s7: after the anchor rod is placed, moving an anchor rod drilling machine to carry out construction of the next anchor rod;
s8: and after the M30 cement mortar shrinks and settles, manually supplementing grouting.
The roofbolter is the pressurization type roofbolter of sideslip formula hydraulic pressure jacking, and patent number is 2018213223302, is prior art, and detailed structure is no longer repeated.
The air compressor is a 0.8MP6 cubic air compressor.
As shown in fig. 1, a slip casting pipe system for air intake and exhaust for realizing the above construction process comprises a
The other end of the
The air compressor is a 0.8MP6 cubic air compressor.
A construction process of the air intake and exhaust grouting pipeline system comprises the following steps:
s1: positioning an anchor rod drilling machine, wherein a drill rod of the anchor rod drilling machine is a hollow drill rod;
s2: starting a jumbolter to drill, starting an air compressor at the same time during drilling, opening an air inlet valve, closing an exhaust valve, allowing high-pressure gas generated by the air compressor to enter a hollow drill rod sequentially through an air inlet pipe, a three-way pipe B, an air pipe, the air inlet valve, a three-way pipe A, a slurry outlet pipe and a grouting pipeline, discharging along a drill bit slurry outlet from the top to the bottom of the hollow drill rod, blowing away soil in a hole, reducing friction force between the drill bit drill rod and the soil, reducing the temperature of the drill bit, improving drilling efficiency, discharging the blown away soil upwards to the ground outside the hole from a gap between the hollow drill rod and the hole wall, forming a dry hole in a drilling mode, generating no slurry, being suitable for construction of various complex strata, and continuously supplying air and cleaning the;
s3: after hole cleaning is finished, closing the air inlet valve, opening the exhaust valve, and discharging waste gas of the air compressor through the air inlet pipe, the three-way pipe B, the exhaust valve and the exhaust pipe in sequence;
s4: starting a mortar pump, enabling the mortar pump to work, pumping the stirred M30 cement mortar into a hollow drill rod through a mortar inlet pipe, a three-way pipe A, a mortar outlet pipe and a grouting pipeline in sequence, grouting the pressure in the drilled hole through a drill bit mortar outlet, slowly lifting the hollow drill rod while pouring the M30 cement mortar, preventing the hollow drill rod from being lifted too fast to cause slurry necking or hole collapse, and closing the mortar pump to stop the mortar pumping work after the hollow drill rod is lifted to an orifice;
s5: opening an air inlet valve, closing an air exhaust valve, allowing high-pressure gas generated by an air compressor to enter a hollow drill rod through an air inlet pipe, a three-way pipe B, an air pipe, the air inlet valve, a three-way pipe A, a slurry outlet pipe and a grouting pipeline in sequence, and blowing out and cleaning mortar in the slurry outlet pipe, the grouting pipeline and the hollow drill rod from a bottom drill bit slurry outlet to prevent pipelines from being blocked;
s6: timely inserting an anchor rod into the drill hole filled with the M30 cement mortar;
s7: after the anchor rod is placed, moving an anchor rod drilling machine to carry out construction of the next anchor rod;
s8: and after the M30 cement mortar shrinks and settles, manually supplementing grouting.
The jumbolter is a transverse hydraulic jacking pressurization type jumbolter.
The air compressor is a 0.8MP6 cubic air compressor.
The above-described embodiments should not be construed as limiting the scope of the invention, and any alternative modifications or alterations to the embodiments of the present invention will be apparent to those skilled in the art.
The present invention is not described in detail, but is known to those skilled in the art.
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