CN116136149B - Novel underwater mechanical rock drilling process parameter rapid determination method - Google Patents
Novel underwater mechanical rock drilling process parameter rapid determination method Download PDFInfo
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- CN116136149B CN116136149B CN202310141287.9A CN202310141287A CN116136149B CN 116136149 B CN116136149 B CN 116136149B CN 202310141287 A CN202310141287 A CN 202310141287A CN 116136149 B CN116136149 B CN 116136149B
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- 239000011435 rock Substances 0.000 title claims abstract description 159
- 238000005553 drilling Methods 0.000 title claims abstract description 144
- 238000000034 method Methods 0.000 title claims abstract description 79
- 230000008569 process Effects 0.000 title claims abstract description 47
- 230000035515 penetration Effects 0.000 claims abstract description 56
- 238000012360 testing method Methods 0.000 claims abstract description 19
- 230000001133 acceleration Effects 0.000 claims description 26
- 229920006395 saturated elastomer Polymers 0.000 claims description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 8
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Classifications
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- 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
- E21B1/00—Percussion drilling
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- 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
- E21B47/00—Survey of boreholes or wells
- E21B47/001—Survey of boreholes or wells for underwater installation
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- 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
- E21B7/00—Special methods or apparatus for drilling
- E21B7/12—Underwater drilling
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Abstract
The invention discloses a novel rapid determination method for underwater mechanical rock drilling process parameters, which comprises the steps of selecting corresponding rock drilling hammers according to a field foundation rock type, carrying out single-time rock drilling tests of different drop distances according to the selected corresponding rock drilling hammers, determining an optimal drop distance through a ratio of penetration depth to drop distance, carrying out single-time repeated rock drilling tests according to the optimal drop distance, comprehensively determining single-point drilling times through an increment ratio of two adjacent penetration depths and the penetration depth, and determining drilling point distances according to the optimal drop distance, the penetration depth under the single-point drilling times and the bedrock type, thereby determining the process parameters of underwater mechanical rock drilling; by simplifying the on-site rock drilling process test flow, the rock drilling process parameters can be rapidly determined only by a plurality of point location rock drilling tests, and the underwater mechanical rock drilling efficiency and the intelligent level can be effectively improved.
Description
Technical Field
The invention relates to the technical field of underwater mechanical rock drilling, in particular to a novel method for quickly determining parameters of an underwater mechanical rock drilling process.
Background
The underwater mechanical rock drilling technology, namely, a grab dredger is adopted to be matched with a rock hammer or a rock drilling rod to break a hard layer, and then the hard layer is cleaned by the grab dredger, so that the method has the advantages of simple and convenient equipment reconstruction, economy, capability of being rapidly put into construction, flexible in advancing and retreating, high safety and the like, is widely applied to rock breaking and reef cleaning engineering, particularly in surrounding building (building) and marine environment protection important waters, and is characterized in that proper rock drilling process parameters, including hammer type, drop distance, single-point drilling times, drilling point distance distribution and the like, are selected according to the characteristics of field foundation rock, at present, the method for determining the underwater mechanical rock drilling process parameters comprises a subjective experience method and a field process test method, and the process parameters selected by the subjective experience method are mainly based on the subjective judgment of engineering experience and engineers, are often different from actual requirements, and often cause multiple reworking; the on-site process test method is characterized in that a plurality of rock drilling process parameter combinations are preset based on previous experience, then a site representative area is selected for rock drilling test, finally the rock drilling process parameter rationality is judged by the measured reef clearing amount of a grab ship, the on-site process test method is high in reliability, but is time-consuming and labor-consuming, the test area is required to reach a certain range so as to conveniently distinguish rock breaking effects under different rock drilling process parameters, and meanwhile, the process parameters determined by the representative area rock drilling test cannot be suitable for all areas due to non-uniformity of site foundation rock distribution, and multiple reworking phenomena can occur.
Disclosure of Invention
In view of the above, the invention provides a novel method for quickly determining the rock drilling process parameters of the underwater machinery, which can quickly determine the rock drilling process parameters of the underwater machinery and effectively improve the rock drilling efficiency of the underwater machinery.
The technical scheme of the invention is realized as follows:
a novel underwater mechanical rock drilling process parameter rapid determination method specifically comprises the following steps:
selecting a corresponding rock drilling hammer according to the field foundation rock type;
carrying out single rock drilling tests of single points with different drop distances according to the selected corresponding rock drilling hammers, and determining the optimal drop distance through the ratio of the penetration depth to the drop distance;
carrying out single-point repeated drilling experiments according to the optimal drop distance, and comprehensively determining single-point drilling times through the increment ratio of the adjacent two penetration depths and the penetration depths;
and determining the drilling point distance according to the optimal drop distance, the penetration depth under the single-point drilling times and the bedrock type, thereby determining the technological parameters of underwater mechanical drilling.
As a further alternative of the method for quickly determining parameters of the novel underwater mechanical rock drilling process, the method for selecting a corresponding rock drilling hammer according to the rock type of the foundation specifically includes:
obtaining saturated uniaxial compressive strength and wind degree of the field foundation rock;
and selecting a corresponding rock drilling hammer according to the saturated uniaxial compressive strength and the wind degree of the ground bedrock.
As a further alternative of the method for quickly determining parameters of the novel underwater mechanical rock drilling process, the method for determining the optimal drop distance by the ratio of penetration depth to drop distance specifically includes:
selecting a rock drilling trial area, and arranging rock drilling points according to a square;
carrying out single-point single rock drilling tests of different falling distances on the rock drilling points according to the water depth, and measuring the corresponding rock drilling penetration depth;
and (3) taking the falling distance as an abscissa, taking the ratio of the penetration depth to the falling distance as an ordinate, and making a first curve, wherein the falling distance corresponding to the peak value of the first curve is the optimal falling distance.
As a further alternative of the method for quickly determining parameters of the novel underwater mechanical rock drilling process, the method for comprehensively determining the single-point drilling times through the increment ratio of the adjacent two penetration depths and the penetration depths specifically includes:
when the penetration depth is larger than 30cm, the single-point chisel attack frequency is taken as an abscissa, the increment ratio of two adjacent penetration depths is taken as an ordinate, a second curve is made, and the peak value of the second curve corresponds to the chisel attack frequency, namely the single-point chisel attack frequency.
As a further alternative of the method for rapidly determining parameters of the novel underwater mechanical rock drilling process, the specific formula for determining the rock drilling point distance according to the optimal drop distance, the penetration depth under the single-point rock drilling times and the bedrock type is as follows:
wherein R is the drilling point distance, xi is the bedrock coefficient, M f For the single point chisel shot count, Δdm is the mth chisel shot penetration depth increment.
As a further alternative of the method for rapidly determining parameters of a novel underwater mechanical rock drilling process, the penetration depth is obtained by monitoring according to an acceleration monitoring device installed at the top of a rock drilling hammer, and specifically includes:
acquiring acceleration changes of the rock drilling hammer from unhooking, water entering and rock entering processes, and making a rock drilling hammer acceleration curve;
integrating the acceleration curve before the rock hammer enters the rock to obtain a rock hammer speed curve;
and taking the moment when the acceleration reverse direction and the speed of the rock drilling hammer reach the peak value as the initial moment of rock drilling hammer rock entering to calculate the rock drilling hammer penetration depth.
As a further alternative of the novel underwater mechanical rock drilling process parameter rapid determination method, the rock drilling hammer acceleration curve is subjected to noise reduction smoothing before the integral processing of the acceleration curve before the rock drilling hammer enters the rock.
The beneficial effects of the invention are as follows: by simplifying the on-site rock drilling process test flow, the rock drilling process parameters can be rapidly determined only by a plurality of point location rock drilling tests, and the underwater mechanical rock drilling efficiency and the intelligent level can be effectively improved.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic flow chart of a novel method for quickly determining parameters of an underwater mechanical rock drilling process;
FIG. 2 is a schematic diagram of a selected pilot drilling area in a method for rapidly determining parameters of a novel underwater mechanical drilling process according to the present invention;
FIG. 3 is a schematic diagram of determining an optimal drop distance by a ratio of penetration depth to drop distance in a novel method for rapidly determining parameters of an underwater mechanical rock drilling process according to the present invention;
fig. 4 is a schematic diagram of determining single point drilling times by means of penetration depth increment ratio in the novel underwater mechanical rock drilling process parameter rapid determination method.
Detailed Description
The following description of the technical solutions in the embodiments of the present invention will be clear and complete, and it is obvious that the described embodiments are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1-4, a novel method for quickly determining parameters of an underwater mechanical rock drilling process specifically comprises the following steps:
selecting a corresponding rock drilling hammer according to the field foundation rock type;
carrying out single rock drilling tests of single points with different drop distances according to the selected corresponding rock drilling hammers, and determining the optimal drop distance through the ratio of the penetration depth to the drop distance;
carrying out single-point repeated drilling experiments according to the optimal drop distance, and comprehensively determining single-point drilling times through the increment ratio of the adjacent two penetration depths and the penetration depths;
and determining the drilling point distance according to the optimal drop distance, the penetration depth under the single-point drilling times and the bedrock type, thereby determining the technological parameters of underwater mechanical drilling.
In the embodiment, the drilling process parameters can be rapidly determined by simplifying the on-site drilling process test flow and only a plurality of point drilling tests, so that the underwater mechanical drilling efficiency and the intelligent level can be effectively improved.
Preferably, the selecting the corresponding rock hammer according to the field foundation rock type specifically includes:
obtaining saturated uniaxial compressive strength and wind degree of the field foundation rock;
and selecting a corresponding rock drilling hammer according to the saturated uniaxial compressive strength and the wind degree of the ground bedrock.
In the present embodiment, the field foundation rock types are classified into three types of soft rock, softer rock and hard rock according to the saturation uniaxial compressive strength and the degree of wind formation of the foundation rock, and correspond to three types of rock drilling hammers of light weight (hammer weight is lower than 15 tons), medium-sized rock drilling hammers (hammer weight is between 15 tons and 30 tons) and heavy-duty rock drilling hammers (hammer weight is greater than 30 tons), respectively; specifically, the middle weathered bedrock with the saturated uniaxial compressive strength lower than 30MPa is divided into soft rock, and a light rock hammer is selected; the method comprises the steps of dividing the medium-weathered and above bedrock with saturated uniaxial compressive strength higher than 30MPa and the medium-weathered and above bedrock with saturated uniaxial compressive strength lower than 30MPa into softer rock, and selecting a medium-sized rock hammer; the bedrock with saturated uniaxial compressive strength higher than 30MPa and above apoplexy is divided into hard rock, and a heavy rock hammer is selected.
Preferably, the determining the optimal drop distance by the ratio of penetration depth to drop distance specifically includes:
selecting a rock drilling trial area, and arranging rock drilling points according to a square;
carrying out single-point single rock drilling tests of different falling distances on the rock drilling points according to the water depth, and measuring the corresponding rock drilling penetration depth;
and (3) taking the falling distance as an abscissa, taking the ratio of the penetration depth to the falling distance as an ordinate, and making a first curve, wherein the falling distance corresponding to the peak value of the first curve is the optimal falling distance.
In the embodiment, a 6m multiplied by 6m rock drilling test area is selected, 9 rock drilling points are arranged at intervals of 2m, single-point single rock drilling tests with drop distances of 5/9S, 6/9S, 7/9S, 8/9S, S, 10/9S, 11/9S, 12/9S and 13/9S are carried out according to the water depth S, the corresponding rock drilling penetration depths are measured, and the drop distances H are used f Taking the horizontal coordinate as the vertical coordinate, taking the ratio D/H of the penetration depth and the drop distance as the vertical coordinate, and making an H-D/H curve, wherein the drop distance corresponding to the peak value of the curve is the optimal drop distance H f 。
Preferably, the determining the single point drilling times by the adjacent two penetration depth increment ratio and penetration depth comprises:
when the penetration depth is larger than 30cm, the single-point chisel attack frequency is taken as an abscissa, the increment ratio of two adjacent penetration depths is taken as an ordinate, a second curve is made, and the peak value of the second curve corresponds to the chisel attack frequency, namely the single-point chisel attack frequency.
In the present embodiment, when the penetration depth is greater than 30cm, the single point is used for the number M of strokes f Taking the horizontal coordinate and the adjacent two penetration depth increment ratio delta Dm/delta Dm-1 as the vertical coordinate, and making a curve of M-delta Dm/delta Dm-1, wherein the corresponding chiseling times of the curve peak value are the single-point chiseling times M f 。
Preferably, the specific formula for determining the drilling point distance according to the optimal drop distance, the penetration depth under the single-point drilling times and the bedrock type is as follows:
wherein R is the drilling point distance, xi is the bedrock coefficient, M f For the single point chisel shot count, Δdm is the mth chisel shot penetration depth increment.
In the present embodiment, the bedrock coefficients include three coefficients, wherein the soft rock coefficient ζ=3, the softer rock ζ=4, and the hard rock ζ=4.5.
Preferably, the penetration depth is obtained by monitoring according to an acceleration monitoring device installed at the top of the rock drilling hammer, and specifically comprises:
acquiring acceleration changes of the rock drilling hammer from unhooking, water entering and rock entering processes, and making a rock drilling hammer acceleration curve;
integrating the acceleration curve before the rock hammer enters the rock to obtain a rock hammer speed curve;
and taking the moment when the acceleration reverse direction and the speed of the rock drilling hammer reach the peak value as the initial moment of rock drilling hammer rock entering to calculate the rock drilling hammer penetration depth.
Preferably, the noise reduction smoothing treatment is performed on the acceleration curve of the jack hammer before the integral treatment is performed on the acceleration curve of the jack hammer before the jack hammer enters the rock.
In this embodiment, the acceleration change of the jack hammer from the processes of unhooking, water entering and rock entering is monitored, a curve of the change of the jack hammer acceleration along with time is made, the measured jack hammer acceleration curve is subjected to noise reduction smoothing, the jack hammer speed curve is obtained by integrating the jack hammer acceleration curve once before rock entering, the initial jack hammer entering time t0 is taken as the initial jack hammer entering time at which the jack hammer acceleration is obviously increased, the initial jack hammer entering speed V0 is determined, the corresponding displacement of the jack hammer entering initial time is taken as the zero point, the jack hammer entering depth along with time is obtained by gradually integrating the jack hammer speed curve, and the maximum value of the steady change section of the rock entering depth curve is the rock drilling penetration depth D of the time.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the invention.
Claims (6)
1. The novel method for quickly determining the parameters of the underwater mechanical rock drilling process is characterized by comprising the following steps of:
selecting a corresponding rock drilling hammer according to the field foundation rock type;
carrying out single rock drilling tests of single points with different drop distances according to the selected corresponding rock drilling hammers, and determining the optimal drop distance through the ratio of the penetration depth to the drop distance;
carrying out single-point repeated drilling experiments according to the optimal drop distance, and comprehensively determining single-point drilling times through the increment ratio of the adjacent two penetration depths and the penetration depths;
determining a drilling point distance according to the optimal drop distance, the penetration depth under the single-point drilling times and the bedrock type, so as to determine the technological parameters of underwater mechanical drilling;
the specific formula for determining the drilling point distance according to the optimal drop distance and the penetration depth under the single-point drilling times and the bedrock type is as follows:
wherein R is the drilling point distance, ζ is the bedrock coefficient, mf is the single-point drilling times, and DeltaDm is the mth drilling penetration depth increment.
2. The method for quickly determining parameters of a novel underwater mechanical rock drilling process according to claim 1, wherein the selecting the corresponding rock hammer according to the field foundation rock type comprises the following steps:
obtaining saturated uniaxial compressive strength and wind degree of the field foundation rock;
and selecting a corresponding rock drilling hammer according to the saturated uniaxial compressive strength and the wind degree of the ground bedrock.
3. The method for quickly determining parameters of a novel underwater mechanical rock drilling process according to claim 2, wherein the determining of the optimal drop distance by the ratio of penetration depth to drop distance comprises the following steps:
selecting a rock drilling trial area, and arranging rock drilling points according to a square;
carrying out single-point single rock drilling tests of different falling distances on the rock drilling points according to the water depth, and measuring the corresponding rock drilling penetration depth;
and (3) taking the falling distance as an abscissa, taking the ratio of the penetration depth to the falling distance as an ordinate, and making a first curve, wherein the falling distance corresponding to the peak value of the first curve is the optimal falling distance.
4. A method for quickly determining parameters of a novel underwater mechanical rock drilling process according to claim 3, wherein the method for comprehensively determining single-point rock drilling times by adjacent two penetration depth increment ratios and penetration depths specifically comprises the following steps:
when the penetration depth is larger than 30cm, the single-point chisel attack frequency is taken as an abscissa, the increment ratio of two adjacent penetration depths is taken as an ordinate, a second curve is made, and the peak value of the second curve corresponds to the chisel attack frequency, namely the single-point chisel attack frequency.
5. The method for quickly determining parameters of a novel underwater mechanical rock drilling process according to claim 4, wherein the penetration depth is obtained by monitoring according to an acceleration monitoring device installed at the top of a rock drilling hammer, and specifically comprises the following steps:
acquiring acceleration changes of the rock drilling hammer from unhooking, water entering and rock entering processes, and making a rock drilling hammer acceleration curve;
integrating the acceleration curve before the rock hammer enters the rock to obtain a rock hammer speed curve;
and taking the moment when the acceleration reverse direction and the speed of the rock drilling hammer reach the peak value as the initial moment of rock drilling hammer rock entering to calculate the rock drilling hammer penetration depth.
6. The method for quickly determining parameters of a novel underwater mechanical rock drilling process according to claim 5, wherein the noise reduction smoothing process is performed on the acceleration curve of the rock drill hammer before the integration process is performed on the acceleration curve of the rock drill hammer.
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- 2023-02-21 CN CN202310141287.9A patent/CN116136149B/en active Active
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| KR20080081423A (en) * | 2007-03-05 | 2008-09-10 | 한국건설기술연구원 | Penetration test apparatus for geotechnical site investigation |
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