CA2995113C - Detection while drilling (dwd) apparatus and method for lithological composition of roadway roof - Google Patents
Detection while drilling (dwd) apparatus and method for lithological composition of roadway roof Download PDFInfo
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- CA2995113C CA2995113C CA2995113A CA2995113A CA2995113C CA 2995113 C CA2995113 C CA 2995113C CA 2995113 A CA2995113 A CA 2995113A CA 2995113 A CA2995113 A CA 2995113A CA 2995113 C CA2995113 C CA 2995113C
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- rock debris
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- roof
- collecting funnel
- filter tube
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- 238000005553 drilling Methods 0.000 title claims abstract description 59
- 239000000203 mixture Substances 0.000 title claims abstract description 22
- 238000001514 detection method Methods 0.000 title claims abstract description 15
- 238000000034 method Methods 0.000 title claims description 34
- 239000011435 rock Substances 0.000 claims abstract description 98
- 238000001035 drying Methods 0.000 claims abstract description 22
- 238000001914 filtration Methods 0.000 claims abstract description 6
- 239000011259 mixed solution Substances 0.000 claims description 6
- 238000005485 electric heating Methods 0.000 claims description 3
- 230000000977 initiatory effect Effects 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- 230000005641 tunneling Effects 0.000 description 6
- 239000003245 coal Substances 0.000 description 5
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 4
- 239000000523 sample Substances 0.000 description 4
- 239000010959 steel Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 2
- 239000003086 colorant Substances 0.000 description 2
- 229910052759 nickel Inorganic materials 0.000 description 2
- 239000003973 paint Substances 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 230000005856 abnormality Effects 0.000 description 1
- 238000004873 anchoring Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 230000002687 intercalation Effects 0.000 description 1
- 238000009830 intercalation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B49/00—Testing the nature of borehole walls; Formation testing; Methods or apparatus for obtaining samples of soil or well fluids, specially adapted to earth drilling or wells
- E21B49/02—Testing the nature of borehole walls; Formation testing; Methods or apparatus for obtaining samples of soil or well fluids, specially adapted to earth drilling or wells by mechanically taking samples of the soil
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B47/00—Survey of boreholes or wells
- E21B47/12—Means for transmitting measuring-signals or control signals from the well to the surface, or from the surface to the well, e.g. for logging while drilling
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B49/00—Testing the nature of borehole walls; Formation testing; Methods or apparatus for obtaining samples of soil or well fluids, specially adapted to earth drilling or wells
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
Abstract
A detection and drilling apparatus for detecting a lithological composition in a roadway roof during drilling thereof comprises a single head jumbolter for drilling a hole in the roof, a rock debris collector for collecting rock debris during drilling of the roof and an enhanced handheld ore analyzer for analyzing the collected rock debris. The rock debris collector comprises a casing with vent holes, a duct, a collecting funnel, a bottom drain pipe, and a dryer device arranged around a filter tube within the casing. A
top opening of the collector funnel is arranged below a borehead drilled by the single-head jumbolter.
The collecting funnel is connected to the filter tube via the duct. During drilling the rock debris collector collects rock debris for drying, filtering and draining to provide the collected rock debris to be analyzed by the enhanced handheld analyzer for detecting the lithological composition in the roof.
top opening of the collector funnel is arranged below a borehead drilled by the single-head jumbolter.
The collecting funnel is connected to the filter tube via the duct. During drilling the rock debris collector collects rock debris for drying, filtering and draining to provide the collected rock debris to be analyzed by the enhanced handheld analyzer for detecting the lithological composition in the roof.
Description
Description Detection While Drilling (DWD) Apparatus and Method for Lithological Composition of Roadway Roof I. Technical Field The present invention relates to a detection while drilling (DWD) method for lithological composition of roadway roof, which is especially applicable to geological conditions of roadway roofs with complex and variable lithology in coal mines, solves a major problem of quantitative description of lithological composition of roadway roof, and is applied in the technical field of roadway supporting in mines.
Background Art In China, the storage conditions of coal resources are affected by the sedimentary environment, and the lithology of roadway roof often varies frequently in the same roadway in the same layer. Since the lithological characteristics of the roadway roof can't be measured timely, the support design can't be changed timely as the lithology of the roof varies. Consequently, sometimes roof accidents may occur owing to inadequate support strength, or the supporting materials are wasted and the drilling efficiency is reduced owing to excessive support strength.
At present, there are mainly three methods for ascertaining the lithology of roadway roof: the first method is to obtain a rock core with a geological rock core drill, carry out manual analysis according to the columnar structure of the rock core to obtain geomechanical parameters of the surrounding rock of the roof, and then carry out support design, but such a method is time-consuming and involves high cost, the geological drill is large in size and unsuitable for use at the tunneling working face, and can't be used anytime and anywhere as the tunneling machine advances; the second method is a geophysical prospecting method, which utilizes abnormalities incurred by rock strata with different physical properties (such as density, magnetic properties, electrical properties, elastic wave propagation velocity, and radioactivity, etc.) to deduce the geological structure; however, the geophysical prospecting method mainly predicts the locations of interfaces (faults and fracture zones thereof, weak intercalations, interfaces between different rock strata, and interfaces between strata), and can't effectively identify the lithology of roadway roof strata, which is right a key and difficult point in roadway anchoring and support engineering; the third method is to utilize a roof structure probe as an observation means to probe the lithology in the borehole in the roadway roof; however, the borehole image is often not clear and the error is severe owing to the complex external environment and the shortcomings of the instrument; consequently, the lithological composition of the roof can't be ascertained quantitatively. Therefore, further study on methods for detecting lithological composition of roadway roof is required, and there is an urgent need for a method that is applicable to working environments in roadways in coal mines and can detect the lithological composition of roadway roof quickly and accurately.
Contents of the Invention Technical Problem: In order to solve the above-mentioned technical drawbacks, the present invention provides detection while drilling (DWD) apparatus and method for lithological composition of roadway roof, which involve simple steps, solve the technical problem that the lithological composition of roof can't be identified quickly in the roadway tunneling and supporting process in coal mines, can ascertain the lithological composition of roof strata in real time in the roadway tunneling process, and are safe and efficient.
Technical Solution: In order to attain the object described above, the detection while drilling (DWD) apparatus for lithological composition of roadway roof provided in the present invention comprises a rock debris collector, a single-head jumbolter, and an enhanced handheld ore analyzer, wherein, the single-head jumbolter is arranged vertically and drills a hole in a roof; the rock debris collector comprises a casing, a rock debris collecting funnel, a duct, a drying device, a filter tube, vent holes, and a drain pipe, wherein, the drying device and the filter tube are arranged vertically inside the casing respectively, the drying device is arranged around the filter tube, an opening connected to the filter tube is arranged at the top of the casing, a plurality of vent holes are arranged on the sides of the casing, the drain pipe is arranged at the bottom of the casing, a funnel hole is arranged at the center below the rock debris collecting funnel, the duct is arranged on one side of the rock debris collecting funnel, a top opening of the rock debris collecting funnel is arranged below the borehole drilled by the single-head jumbolter, and the rock debris collecting funnel is connected to the filter tube via the duct.
The single-head jumbolter is hydraulic or pneumatic; the drill rod is a scaled drill rod, grooves in lcm height and 1mm depth are machined along the drill rod in 1m length from top to bottom at 20cm interval, and color strips in red, yellow, green, cyan, and blue colors are sprayed with light-reflecting paint in the grooves from top to bottom in the drilling direction.
The circular funnel hole on the bottom of the rock debris collecting funnel has a diameter of 20-30mm, the top opening of the rock debris collecting funnel is a circular flare opening having a diameter of 50-60cm, and the rock debris collecting funnel is fixed to the roof with expansion bolts; the rock debris collecting funnel is welded with a first section of 50cm steel duct of the duct, the rock debris collecting funnel and the duct are both made of stainless steel, and the joint between them is at the lowest end of the rock debris collecting funnel.
The duct consists of a plurality of 50cm short steel ducts connected via threads. The drying device consists of two electric heating tubes, each of which has a built-in 2000W nickel chrome wire respectively. The filter tube has filter holes on its bottom and side walls, the filter tube has a mesh number of 80-120 and the filter holes have a diameter of 0.125-0.18mm.
A detection while drilling (DWD) method for lithological composition of roadway roof, comprising the following steps:
Background Art In China, the storage conditions of coal resources are affected by the sedimentary environment, and the lithology of roadway roof often varies frequently in the same roadway in the same layer. Since the lithological characteristics of the roadway roof can't be measured timely, the support design can't be changed timely as the lithology of the roof varies. Consequently, sometimes roof accidents may occur owing to inadequate support strength, or the supporting materials are wasted and the drilling efficiency is reduced owing to excessive support strength.
At present, there are mainly three methods for ascertaining the lithology of roadway roof: the first method is to obtain a rock core with a geological rock core drill, carry out manual analysis according to the columnar structure of the rock core to obtain geomechanical parameters of the surrounding rock of the roof, and then carry out support design, but such a method is time-consuming and involves high cost, the geological drill is large in size and unsuitable for use at the tunneling working face, and can't be used anytime and anywhere as the tunneling machine advances; the second method is a geophysical prospecting method, which utilizes abnormalities incurred by rock strata with different physical properties (such as density, magnetic properties, electrical properties, elastic wave propagation velocity, and radioactivity, etc.) to deduce the geological structure; however, the geophysical prospecting method mainly predicts the locations of interfaces (faults and fracture zones thereof, weak intercalations, interfaces between different rock strata, and interfaces between strata), and can't effectively identify the lithology of roadway roof strata, which is right a key and difficult point in roadway anchoring and support engineering; the third method is to utilize a roof structure probe as an observation means to probe the lithology in the borehole in the roadway roof; however, the borehole image is often not clear and the error is severe owing to the complex external environment and the shortcomings of the instrument; consequently, the lithological composition of the roof can't be ascertained quantitatively. Therefore, further study on methods for detecting lithological composition of roadway roof is required, and there is an urgent need for a method that is applicable to working environments in roadways in coal mines and can detect the lithological composition of roadway roof quickly and accurately.
Contents of the Invention Technical Problem: In order to solve the above-mentioned technical drawbacks, the present invention provides detection while drilling (DWD) apparatus and method for lithological composition of roadway roof, which involve simple steps, solve the technical problem that the lithological composition of roof can't be identified quickly in the roadway tunneling and supporting process in coal mines, can ascertain the lithological composition of roof strata in real time in the roadway tunneling process, and are safe and efficient.
Technical Solution: In order to attain the object described above, the detection while drilling (DWD) apparatus for lithological composition of roadway roof provided in the present invention comprises a rock debris collector, a single-head jumbolter, and an enhanced handheld ore analyzer, wherein, the single-head jumbolter is arranged vertically and drills a hole in a roof; the rock debris collector comprises a casing, a rock debris collecting funnel, a duct, a drying device, a filter tube, vent holes, and a drain pipe, wherein, the drying device and the filter tube are arranged vertically inside the casing respectively, the drying device is arranged around the filter tube, an opening connected to the filter tube is arranged at the top of the casing, a plurality of vent holes are arranged on the sides of the casing, the drain pipe is arranged at the bottom of the casing, a funnel hole is arranged at the center below the rock debris collecting funnel, the duct is arranged on one side of the rock debris collecting funnel, a top opening of the rock debris collecting funnel is arranged below the borehole drilled by the single-head jumbolter, and the rock debris collecting funnel is connected to the filter tube via the duct.
The single-head jumbolter is hydraulic or pneumatic; the drill rod is a scaled drill rod, grooves in lcm height and 1mm depth are machined along the drill rod in 1m length from top to bottom at 20cm interval, and color strips in red, yellow, green, cyan, and blue colors are sprayed with light-reflecting paint in the grooves from top to bottom in the drilling direction.
The circular funnel hole on the bottom of the rock debris collecting funnel has a diameter of 20-30mm, the top opening of the rock debris collecting funnel is a circular flare opening having a diameter of 50-60cm, and the rock debris collecting funnel is fixed to the roof with expansion bolts; the rock debris collecting funnel is welded with a first section of 50cm steel duct of the duct, the rock debris collecting funnel and the duct are both made of stainless steel, and the joint between them is at the lowest end of the rock debris collecting funnel.
The duct consists of a plurality of 50cm short steel ducts connected via threads. The drying device consists of two electric heating tubes, each of which has a built-in 2000W nickel chrome wire respectively. The filter tube has filter holes on its bottom and side walls, the filter tube has a mesh number of 80-120 and the filter holes have a diameter of 0.125-0.18mm.
A detection while drilling (DWD) method for lithological composition of roadway roof, comprising the following steps:
2 a. Before drilling, lifting the top opening of the collecting funnel of the rock debris collector to a position below the borehole, adjusting the position of the rock debris collecting funnel so that the funnel hole is right below the borehole, and fixing the rock debris collecting funnel to the rock wall of the roof with expansion bolt;
b. initiating a drilling process: leading the scaled drill rod and drill bit of the single-head jumbolter through the funnel hole at the center of the rock debris collecting funnel and drilling into the roof vertically, and lengthening the scaled drill rod as required according to the drilling depth in the drilling process;
c. in the drilling process, stopping drilling whenever the scaled drill rod advances by 20cm, collecting the mixed solution of rocking debris in the roof by the rock debris collecting funnel, introducing the mixed solution through the duct into the filter tube of the rock debris collector for filtering, draining the water through the drain pipe with the rock debris being deposited in the filter tube, drying the rock debris deposited in the filter tube with the drying device around the filter tube, so as to obtain a sample of the roof rock in the drilling segment, replacing the filter tube in the rock debris collector, and logging and numbering the removed filter tubes orderly, so as to obtain samples of the roof rock in different depths;
d. repeating the steps b and c according to the drilling depth, till the desired drilling depth is reached;
e. ranking the collected filter tubes according to number, detecting and analyzing the rock debris in the filter tubes with an enhanced handheld ore analyzer orderly, and ascertaining the lithological characteristics of the roof strata in the borehole from shallow to deep by comparing the drilling depth log.
Beneficial effects:
The method provided in the present invention utilizes a special rock debris collector to collect the rock debris produced while drilling in the roof drilling process with the jumbolter, an entire process, including rock debris introduction, filtering, deposition, and drying, is accomplished at the roadway tunneling working face, and the lithological composition of the roadway roof within a certain range is measured with an enhanced handheld ore analyzer. The method overcomes a drawback that the same roadway is usually supported in the same way in the prior art, adjusts the supporting scheme timely according to the variation of lithological composition of the roadway roof, and is applicable to roadway roofs with complex lithological conditions;
with the method, the lithological composition of the roof is detected continuously in the roadway tunneling process to provide a scientific basis for design and adjustment of supporting modes and supporting parameters, so as to avoid the occurrence of roof-fall accidents as far as possible and provide a safe and reliable working environment for coal miners; the apparatus and method provided in the present invention are easy to use, safe and reliable, and can be used conveniently in the field.
b. initiating a drilling process: leading the scaled drill rod and drill bit of the single-head jumbolter through the funnel hole at the center of the rock debris collecting funnel and drilling into the roof vertically, and lengthening the scaled drill rod as required according to the drilling depth in the drilling process;
c. in the drilling process, stopping drilling whenever the scaled drill rod advances by 20cm, collecting the mixed solution of rocking debris in the roof by the rock debris collecting funnel, introducing the mixed solution through the duct into the filter tube of the rock debris collector for filtering, draining the water through the drain pipe with the rock debris being deposited in the filter tube, drying the rock debris deposited in the filter tube with the drying device around the filter tube, so as to obtain a sample of the roof rock in the drilling segment, replacing the filter tube in the rock debris collector, and logging and numbering the removed filter tubes orderly, so as to obtain samples of the roof rock in different depths;
d. repeating the steps b and c according to the drilling depth, till the desired drilling depth is reached;
e. ranking the collected filter tubes according to number, detecting and analyzing the rock debris in the filter tubes with an enhanced handheld ore analyzer orderly, and ascertaining the lithological characteristics of the roof strata in the borehole from shallow to deep by comparing the drilling depth log.
Beneficial effects:
The method provided in the present invention utilizes a special rock debris collector to collect the rock debris produced while drilling in the roof drilling process with the jumbolter, an entire process, including rock debris introduction, filtering, deposition, and drying, is accomplished at the roadway tunneling working face, and the lithological composition of the roadway roof within a certain range is measured with an enhanced handheld ore analyzer. The method overcomes a drawback that the same roadway is usually supported in the same way in the prior art, adjusts the supporting scheme timely according to the variation of lithological composition of the roadway roof, and is applicable to roadway roofs with complex lithological conditions;
with the method, the lithological composition of the roof is detected continuously in the roadway tunneling process to provide a scientific basis for design and adjustment of supporting modes and supporting parameters, so as to avoid the occurrence of roof-fall accidents as far as possible and provide a safe and reliable working environment for coal miners; the apparatus and method provided in the present invention are easy to use, safe and reliable, and can be used conveniently in the field.
3 IV. Description of Drawings Fig. 1 is a schematic plane layout structural diagram of the present invention;
In the figure: 1 - rock debris collector; 2 - single-head jumbolter; 3 - rock debris collecting funnel; 4 - funnel hole; 5 - duct; 6 - drying device; 7 - filter tube; 8 - vent hole; 9 - drain pipe; 10 - roof; 11 - roadway floor Fig. 2 is a schematic diagram of the scaled drill rod;
Fig. 3 is a schematic diagram of the rock debris collecting funnel.
V. Embodiments Hereunder the present invention will be further detailed in an example of the present invention with reference to the accompanying drawings.
As shown in Fig. l, the detection while drilling (DWD) apparatus for lithological composition of roadway roof provided in the present invention comprises a rock debris collector 1, a single-head jumbolter 2, and an enhanced handheld ore analyzer, wherein, the single-head jumbolter 2 is arranged vertically and drills a hole in a roof 10; the rock debris collector 1 comprises a casing, a rock debris collecting funnel 3, a duct 5, a drying device 6, a filter tube 7, vent holes 8, and a drain pipe 9, wherein, the drying device 6 and the filter tube 7 are arranged vertically inside the casing respectively, the drying device 6 consists of two electric heating tubes that have a built-in 2,000W nickel chrome wire respectively, the drying device 6 is arranged around the filter tube 7, an opening connected to the filter tube 7 is arranged at the top of the casing, a plurality of vent holes 8 are arranged on the sides of the casing, the drain pipe 9 is arranged at the bottom of the casing, a funnel hole 4 is arranged at the center below the rock debris collecting funnel 3, the duct 5 is arranged on one side of the rock debris collecting funnel, and consists of a plurality of 50cm short steel ducts connected via threads, a top opening of the rock debris collecting funnel 3 is arranged below the borehole drilled by the single-head jumbolter 2, and the rock debris collecting funnel 3 is connected to the filter tube 7 via the duct S. The filter tube 7 has filter holes on its bottom and side walls, the filter tube has a mesh number of 80-120 and the filter holes have a diameter of 0.125-0.18mm.
The single-head jumbolter 2 is hydraulic or pneumatic; as shown in Fig. 2, the drill rod is a scaled drill rod, grooves in I cm height and Imm depth are machined along the drill rod-in 1m length from top to bottom at 20cm interval, and color strips in red, yellow, green, cyan, and blue colors are sprayed with light-reflecting paint in the grooves from top to bottom in the drilling direction, wherein, Li has a length of 100cm, and L2 has a length of 20cm.
As shown in Fig. 3, the circular funnel hole 4 on the bottom of the rock debris collecting funnel 3 has a diameter of 20-30mm, the top opening of the rock debris collecting funnel 3 is a circular flare opening having a diameter of 50-60cm, and the rock debris collecting funnel 3 is fixed to the roof with expansion bolts; the rock debris collecting funnel 3 is welded with a first section of 50cm steel duct of the duct 5, the rock debris collecting funnel and the duct are both made of stainless steel, and the joint between them is at the lowest end of the rock debris collecting funnel.
In the figure: 1 - rock debris collector; 2 - single-head jumbolter; 3 - rock debris collecting funnel; 4 - funnel hole; 5 - duct; 6 - drying device; 7 - filter tube; 8 - vent hole; 9 - drain pipe; 10 - roof; 11 - roadway floor Fig. 2 is a schematic diagram of the scaled drill rod;
Fig. 3 is a schematic diagram of the rock debris collecting funnel.
V. Embodiments Hereunder the present invention will be further detailed in an example of the present invention with reference to the accompanying drawings.
As shown in Fig. l, the detection while drilling (DWD) apparatus for lithological composition of roadway roof provided in the present invention comprises a rock debris collector 1, a single-head jumbolter 2, and an enhanced handheld ore analyzer, wherein, the single-head jumbolter 2 is arranged vertically and drills a hole in a roof 10; the rock debris collector 1 comprises a casing, a rock debris collecting funnel 3, a duct 5, a drying device 6, a filter tube 7, vent holes 8, and a drain pipe 9, wherein, the drying device 6 and the filter tube 7 are arranged vertically inside the casing respectively, the drying device 6 consists of two electric heating tubes that have a built-in 2,000W nickel chrome wire respectively, the drying device 6 is arranged around the filter tube 7, an opening connected to the filter tube 7 is arranged at the top of the casing, a plurality of vent holes 8 are arranged on the sides of the casing, the drain pipe 9 is arranged at the bottom of the casing, a funnel hole 4 is arranged at the center below the rock debris collecting funnel 3, the duct 5 is arranged on one side of the rock debris collecting funnel, and consists of a plurality of 50cm short steel ducts connected via threads, a top opening of the rock debris collecting funnel 3 is arranged below the borehole drilled by the single-head jumbolter 2, and the rock debris collecting funnel 3 is connected to the filter tube 7 via the duct S. The filter tube 7 has filter holes on its bottom and side walls, the filter tube has a mesh number of 80-120 and the filter holes have a diameter of 0.125-0.18mm.
The single-head jumbolter 2 is hydraulic or pneumatic; as shown in Fig. 2, the drill rod is a scaled drill rod, grooves in I cm height and Imm depth are machined along the drill rod-in 1m length from top to bottom at 20cm interval, and color strips in red, yellow, green, cyan, and blue colors are sprayed with light-reflecting paint in the grooves from top to bottom in the drilling direction, wherein, Li has a length of 100cm, and L2 has a length of 20cm.
As shown in Fig. 3, the circular funnel hole 4 on the bottom of the rock debris collecting funnel 3 has a diameter of 20-30mm, the top opening of the rock debris collecting funnel 3 is a circular flare opening having a diameter of 50-60cm, and the rock debris collecting funnel 3 is fixed to the roof with expansion bolts; the rock debris collecting funnel 3 is welded with a first section of 50cm steel duct of the duct 5, the rock debris collecting funnel and the duct are both made of stainless steel, and the joint between them is at the lowest end of the rock debris collecting funnel.
4 A detection while drilling (DWD) method for lithological composition of roadway roof, comprising the following steps:
a. Before drilling, lifting the top opening of the collecting funnel 3 of the rock debris collector 1 to a position below the borehole, adjusting the position of the rock debris collecting funnel 3 so that the funnel hole 4 is right below the borehole, and fixing the rock debris collecting funnel 3 to the rock wall of the roof with expansion bolt;
b. initiating a drilling process: leading the scaled drill rod and drill bit of the single-head jumbolter through the funnel hole 4 at the center of the rock debris collecting funnel 3 and drilling into the roof vertically, and lengthening the scaled drill rod as required according to the drilling depth in the drilling process;
c. in the drilling process, stopping drilling whenever the scaled drill rod advances by 20cm, collecting the mixed solution of rocking debris in the roof II by the rock debris collecting funnel 3, introducing the mixed solution through the duct 5 into the filter tube 7 of the rock debris collector I for filtering, draining the water through the drain pipe 9 with the rock debris being deposited in the filter tube 7, drying the rock debris deposited in the filter tube 7 with the drying device 6 around the filter tube 7, so as to obtain a sample of the roof rock in the drilling segment, replacing the filter tube 7 in the rock debris collector 1, and logging and numbering the removed filter tubes 7 orderly, so as to obtain samples of the roof rock in different depths;
d. repeating the steps b and c according to the drilling depth, till the desired drilling depth is reached;
e. ranking the collected filter tubes 7 according to number, detecting and analyzing the rock debris in the filter tubes with an enhanced handheld ore analyzer orderly, and ascertaining the lithological characteristics of the roof strata in the borehole from shallow to deep by comparing the drilling depth log.
a. Before drilling, lifting the top opening of the collecting funnel 3 of the rock debris collector 1 to a position below the borehole, adjusting the position of the rock debris collecting funnel 3 so that the funnel hole 4 is right below the borehole, and fixing the rock debris collecting funnel 3 to the rock wall of the roof with expansion bolt;
b. initiating a drilling process: leading the scaled drill rod and drill bit of the single-head jumbolter through the funnel hole 4 at the center of the rock debris collecting funnel 3 and drilling into the roof vertically, and lengthening the scaled drill rod as required according to the drilling depth in the drilling process;
c. in the drilling process, stopping drilling whenever the scaled drill rod advances by 20cm, collecting the mixed solution of rocking debris in the roof II by the rock debris collecting funnel 3, introducing the mixed solution through the duct 5 into the filter tube 7 of the rock debris collector I for filtering, draining the water through the drain pipe 9 with the rock debris being deposited in the filter tube 7, drying the rock debris deposited in the filter tube 7 with the drying device 6 around the filter tube 7, so as to obtain a sample of the roof rock in the drilling segment, replacing the filter tube 7 in the rock debris collector 1, and logging and numbering the removed filter tubes 7 orderly, so as to obtain samples of the roof rock in different depths;
d. repeating the steps b and c according to the drilling depth, till the desired drilling depth is reached;
e. ranking the collected filter tubes 7 according to number, detecting and analyzing the rock debris in the filter tubes with an enhanced handheld ore analyzer orderly, and ascertaining the lithological characteristics of the roof strata in the borehole from shallow to deep by comparing the drilling depth log.
Claims (7)
1. A detection and drilling (DWD) apparatus for detecting a lithological composition in a roadway roof (10) during drilling thereof comprising:
a single-head jumbolter (2) being vertically arranged for drilling a hole in the roof (10);
a rock debris collector (1) comprising a casing, a rock debris collecting funnel (3), a duct (5), a drying device (6), a filter tube (7), vent holes (8), and a drain pipe (9), wherein, the drying device (6) and the filter tube (7) are arranged vertically inside the casing respectively, the drying device (6) is arranged around the filter tube (7), an opening connected to the filter tube (7) is arranged at the top of the casing, a plurality of vent holes (8) are arranged on the sides of the casing, the drain pipe (9) is arranged at the bottom of the casing, a funnel hole (4) is arranged at the center below the rock debris collecting funnel (3), the duct (5) is arranged on one side of the rock debris collecting funnel, a top opening of the rock debris collecting funnel (3) is arranged below the borehole drilled by the single-head jumbolter (2), and the rock debris collecting funnel (3) is connected to the filter tube (7) via the duct (5); and an enhanced handheld ore analyzer (3), wherein during drilling of the roof by the single-head jumbolter (2), the rock debris collector collects rock debris therefrom for drying, filtering and draining so as to provide the collected rock debris to be analyzed by the enhanced handheld analyzer (3) for detecting the lithological composition in the roof (10) during drilling thereof.
a single-head jumbolter (2) being vertically arranged for drilling a hole in the roof (10);
a rock debris collector (1) comprising a casing, a rock debris collecting funnel (3), a duct (5), a drying device (6), a filter tube (7), vent holes (8), and a drain pipe (9), wherein, the drying device (6) and the filter tube (7) are arranged vertically inside the casing respectively, the drying device (6) is arranged around the filter tube (7), an opening connected to the filter tube (7) is arranged at the top of the casing, a plurality of vent holes (8) are arranged on the sides of the casing, the drain pipe (9) is arranged at the bottom of the casing, a funnel hole (4) is arranged at the center below the rock debris collecting funnel (3), the duct (5) is arranged on one side of the rock debris collecting funnel, a top opening of the rock debris collecting funnel (3) is arranged below the borehole drilled by the single-head jumbolter (2), and the rock debris collecting funnel (3) is connected to the filter tube (7) via the duct (5); and an enhanced handheld ore analyzer (3), wherein during drilling of the roof by the single-head jumbolter (2), the rock debris collector collects rock debris therefrom for drying, filtering and draining so as to provide the collected rock debris to be analyzed by the enhanced handheld analyzer (3) for detecting the lithological composition in the roof (10) during drilling thereof.
2. The detection and drilling (DWD) apparatus according to claim 1, wherein, the single-head jumbolter (2) is hydraulic or pneumatic and comprises a scaled drill rod.
3. The detection and drilling (DWD) apparatus according to claim 1, wherein, the circular funnel hole (4) on the bottom of the rock debris collecting funnel (3) has a diameter of about 20~30mm, the top opening of the rock debris collecting funnel (3) is a circular flare opening having a diameter of 50~60cm, and the rock debris collecting funnel (3) is fixed to the roof with expansion bolts; the rock debris collecting funnel (3) and the duct (5) are connected and define a joint therebetween at the lowest end of the rock debris collecting funnel.
4. The detection and drilling (DWD) apparatus according to claim 2, wherein, the duct (5) consists of a plurality of short ducts connected via threads.
5. The detection and drilling (DWD) apparatus according to claim 2, wherein, the drying device (6) consists of two electric heating tubes.
6. The detection and drilling (DWD) apparatus according to claim 2, wherein, the filter tube (7) has filter holes on its bottom and side walls, the filter tube has a mesh number of 80-120 and the filter holes have a diameter of 0.125-0.18mm.
7. A method for detecting a lithological composition in a roadway roof during drilling thereof using the apparatus according to claim 1, wherein the single-head jumbolter comprises a scaled drill rod and a drill bit, the method comprising the following steps:
a. lifting the top opening of the collecting funnel (3) of the rock debris collector (1) to a position below the borehole, adjusting the position of the rock debris collecting funnel (3) so that the funnel hole (4) is right below the borehole, and fixing the rock debris collecting funnel (3) to the rock wall of the roof with an expansion bolt;
b. initiating a drilling process by leading the scaled drill rod and drill bit of the single-head jumbolter through the funnel hole (4) at the center of the rock debris collecting funnel (3) and drilling into the roof vertically, and lengthening the scaled drill rod as required according to a drilling depth;
c. in the drilling process, stopping drilling whenever the scaled drill rod advances by 20cm, collecting the mixed solution of rocking debris in the roof (11) by the rock debris collecting funnel (3), introducing the mixed solution through the duct (5) into the filter tube (7) of the rock debris collector (1) for filtering, draining the water through the drain pipe (9) with the rock debris being deposited in the filter tube, drying the rock debris deposited in the filter tube (7) with the drying device (6) around the filter tube (7), so as to obtain a sample of the roof (11) rock in the drilling segment, replacing the filter tube (7) in the rock debris collector (1), and logging and numbering the removed filter tubes (7) orderly, so as to obtain samples of the roof rock in different depths;
d. repeating the steps b and c according to a drilling depth;
e. ranking the collected filter tubes (7) according to number, and detecting and analyzing the rock debris in the filter tubes with an enhanced handheld ore analyzer orderly, and ascertaining the lithological characteristics of the roof strata in the borehole from by comparing the drilling depth log.
a. lifting the top opening of the collecting funnel (3) of the rock debris collector (1) to a position below the borehole, adjusting the position of the rock debris collecting funnel (3) so that the funnel hole (4) is right below the borehole, and fixing the rock debris collecting funnel (3) to the rock wall of the roof with an expansion bolt;
b. initiating a drilling process by leading the scaled drill rod and drill bit of the single-head jumbolter through the funnel hole (4) at the center of the rock debris collecting funnel (3) and drilling into the roof vertically, and lengthening the scaled drill rod as required according to a drilling depth;
c. in the drilling process, stopping drilling whenever the scaled drill rod advances by 20cm, collecting the mixed solution of rocking debris in the roof (11) by the rock debris collecting funnel (3), introducing the mixed solution through the duct (5) into the filter tube (7) of the rock debris collector (1) for filtering, draining the water through the drain pipe (9) with the rock debris being deposited in the filter tube, drying the rock debris deposited in the filter tube (7) with the drying device (6) around the filter tube (7), so as to obtain a sample of the roof (11) rock in the drilling segment, replacing the filter tube (7) in the rock debris collector (1), and logging and numbering the removed filter tubes (7) orderly, so as to obtain samples of the roof rock in different depths;
d. repeating the steps b and c according to a drilling depth;
e. ranking the collected filter tubes (7) according to number, and detecting and analyzing the rock debris in the filter tubes with an enhanced handheld ore analyzer orderly, and ascertaining the lithological characteristics of the roof strata in the borehole from by comparing the drilling depth log.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611101993.7 | 2016-12-05 | ||
| CN201611101993.7A CN106382116B (en) | 2016-12-05 | 2016-12-05 | Back lithological composition surveys device and method with probing |
| PCT/CN2017/091611 WO2018103326A1 (en) | 2016-12-05 | 2017-07-04 | Measurement while drilling device and method for determining lithological characteristics of tunnel roof |
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| CA2995113A1 CA2995113A1 (en) | 2018-06-14 |
| CA2995113C true CA2995113C (en) | 2020-05-12 |
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| CA2995113A Active CA2995113C (en) | 2016-12-05 | 2017-07-04 | Detection while drilling (dwd) apparatus and method for lithological composition of roadway roof |
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| Country | Link |
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| CN (1) | CN106382116B (en) |
| AU (1) | AU2017311614B2 (en) |
| CA (1) | CA2995113C (en) |
| RU (1) | RU2692321C1 (en) |
| WO (1) | WO2018103326A1 (en) |
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| CN106382116B (en) * | 2016-12-05 | 2019-03-19 | 中国矿业大学 | Back lithological composition surveys device and method with probing |
| CN106837324B (en) * | 2017-04-06 | 2023-06-02 | 山东科技大学 | Method for quickly determining lithology name and strength of rock and drilling data acquisition system |
| CN107387060A (en) * | 2017-09-11 | 2017-11-24 | 中国矿业大学 | One kind instructs fully mechanized mining machine top coal recovery method |
| CN108051240A (en) * | 2017-12-22 | 2018-05-18 | 河南建筑材料研究设计院有限责任公司 | A kind of method of definite limestone ore deposit ore chemistry ingredient grade |
| CN111396039B (en) * | 2020-05-13 | 2023-06-06 | 天地科技股份有限公司 | Coal mine tunnel roof lithology drilling judgment device and judgment method |
| CN112160737B (en) * | 2020-10-23 | 2023-03-10 | 河南理工大学 | Coal seam roof directional fracturing method based on hydraulic cutting technology |
| CN112482991B (en) * | 2020-11-25 | 2023-01-03 | 中铁隧道局集团有限公司 | Roofbolter with geology recognition function |
| CN113027440A (en) * | 2021-04-13 | 2021-06-25 | 陕西中太能源投资有限公司 | Construction method for fully mechanized coal mining face crossing oblique fault |
| CN113266347B (en) * | 2021-07-05 | 2022-05-13 | 中煤科工集团重庆研究院有限公司 | Near-bit coal seam gas parameter while-drilling comprehensive measurement device and method |
| CN113431561A (en) * | 2021-07-12 | 2021-09-24 | 绍兴文理学院 | Automatic rock recognition device for drilling |
| CA3226103A1 (en) * | 2021-08-03 | 2023-02-09 | John Carl JACKSON | Measurement tool installation apparatus and method |
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| US7111685B2 (en) * | 2003-07-25 | 2006-09-26 | Schlumberger Technology Corporation | Downhole sampling apparatus and method |
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- 2017-07-04 RU RU2018111528A patent/RU2692321C1/en active
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- 2017-07-04 CA CA2995113A patent/CA2995113C/en active Active
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| AU2017311614B2 (en) | 2019-04-18 |
| CA2995113A1 (en) | 2018-06-14 |
| RU2692321C1 (en) | 2019-06-24 |
| WO2018103326A1 (en) | 2018-06-14 |
| AU2017311614A1 (en) | 2018-06-21 |
| CN106382116B (en) | 2019-03-19 |
| CN106382116A (en) | 2017-02-08 |
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