CN116498293A - Drilling control method for medium-length hole drilling trolley - Google Patents
Drilling control method for medium-length hole drilling trolley Download PDFInfo
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- 238000005553 drilling Methods 0.000 title claims abstract description 116
- 238000000034 method Methods 0.000 title claims abstract description 33
- 239000011435 rock Substances 0.000 claims abstract description 104
- 238000009527 percussion Methods 0.000 claims abstract description 8
- 230000007423 decrease Effects 0.000 claims description 7
- 230000003247 decreasing effect Effects 0.000 description 14
- 230000009471 action Effects 0.000 description 9
- 102100039805 G patch domain-containing protein 2 Human genes 0.000 description 8
- 101001034114 Homo sapiens G patch domain-containing protein 2 Proteins 0.000 description 8
- 230000009467 reduction Effects 0.000 description 6
- 238000001914 filtration Methods 0.000 description 5
- 101100408068 Amanita phalloides PHA1 gene Proteins 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 208000015476 pseudohypoaldosteronism type 1 Diseases 0.000 description 4
- 238000011282 treatment Methods 0.000 description 4
- 238000005422 blasting Methods 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 3
- ZPUCINDJVBIVPJ-LJISPDSOSA-N cocaine Chemical compound O([C@H]1C[C@@H]2CC[C@@H](N2C)[C@H]1C(=O)OC)C(=O)C1=CC=CC=C1 ZPUCINDJVBIVPJ-LJISPDSOSA-N 0.000 description 3
- 230000002035 prolonged effect Effects 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000004080 punching Methods 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
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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
- E21B44/00—Automatic control systems specially adapted for drilling operations, i.e. self-operating systems which function to carry out or modify a drilling operation without intervention of a human operator, e.g. computer-controlled drilling systems; Systems specially adapted for monitoring a plurality of drilling variables or conditions
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
- Y02P90/02—Total factory control, e.g. smart factories, flexible manufacturing systems [FMS] or integrated manufacturing systems [IMS]
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Abstract
The invention discloses a drilling control method of a medium-length hole drilling trolley, and belongs to the field of drilling control methods of medium-length hole drilling trolleys. The method comprises the following steps: step 1: calculating drilling parameters according to working conditions of mine rocks; step 2: converting the drilling parameters, converting the drilling parameters into electric signal parameters, and inputting the converted electric signal parameters into a control system through a display; step 3: whether to enter the cycle is selected according to whether the actual bit rotational pressure is greater than 12Mpa. In the step 1, the mine rock working conditions comprise rock types and rock stratum conditions, the mine rock working conditions are divided into normal working conditions and drill rod clamping working conditions, and the normal working conditions comprise good, general and bad; the drilling parameters include a thrust flow, a thrust pressure, and a percussion pressure. The invention can work under severe working conditions, not only can ensure that the drill rod is not blocked in the hole, but also can ensure the straightness of drilling, and simultaneously saves drilling tools and improves the durability of the medium-length hole trolley.
Description
Technical Field
The invention belongs to the field of drilling control methods of medium-length hole drilling trolleys, and particularly relates to a drilling control method of a medium-length hole drilling trolley.
Background
The medium-length hole drilling trolley is core equipment which needs to be applied in various mining methods, the drilling depth is generally about 10m-40m, the hardness of rock and the environment are complex and changeable, such as frequent faults, a plurality of working conditions of rock breaking belts and the like, drill rods are easy to cause that the drill rods are blocked in the drilling holes and cannot be pulled out, so that the drill rods are lost, meanwhile, time is wasted, the direct economic loss is tens of thousands of yuan, the situation of hole drilling deflection is easy to cause, the large block rate of blasting is high, secondary blasting and other treatments (time and money waste, and secondary blasting work is particularly dangerous) are required to be carried out.
In the past medium-length hole trolley, a simple anti-sticking drilling valve is generally used for controlling drilling, the anti-sticking effect can not meet the requirement under severe working conditions, and the drilling deflection rate is very large, so that great loss is caused to a constructor.
Therefore, an advanced drilling control method of the medium-length hole drilling trolley is needed, and the requirements of straightness of drilling in the drilling process and smoothness in the drilling process under the severe working condition are met, no drill sticking is needed, drilling tools are saved, and the durability of the medium-length hole drilling trolley is improved.
Disclosure of Invention
Aiming at the problems that a drill rod is easy to be blocked in a drill hole and the drilling deflection rate is large under severe working conditions, the invention aims to provide a method for controlling the drilling of a medium-length hole drill trolley, which can not only ensure that the drill rod is not blocked in the hole, but also ensure the straightness of the drill hole, simultaneously save drilling tools and improve the durability of the medium-length hole drill trolley, and the method for controlling the drilling of the medium-length hole drill trolley comprises the following steps:
step 1: calculating drilling parameters according to working conditions of mine rocks;
step 2: converting the drilling parameters, converting the drilling parameters into electric signal parameters, and inputting the converted electric signal parameters into a control system through a display;
step 3: whether to enter the cycle is selected according to whether the actual bit rotational pressure is greater than 12Mpa.
In the step 1, the mine rock working conditions include rock types and rock stratum conditions.
In the step 1, the working conditions of the mine rock are divided into a normal working condition and a drill rod clamping working condition.
In some embodiments, the normal operating conditions include good, normal, and bad again.
In the step 1, the drilling parameters include a propulsion flow rate, a propulsion pressure and a percussion pressure.
In the step 1, in the construction process of the rock drilling trolley, the working condition of mine rock is obtained through a sensor on the rock drilling trolley.
Under normal conditions (which may be understood as when the rotational pressure is in the range of 0-PB), the rotational pressure controls the propulsion flow.
When the rotation pressure is in the range of 0-PA, the current drilling sticking risk is small, the pushing flow is a straight line, the flow of the pushing oil cylinder is a pushing flow QA value set by full-power drilling, namely when the rotation pressure is 0-9Mpa, the pushing flow is constant to be QA value.
In some embodiments, the PA is 9Mpa.
In some embodiments, the QA is 5-10L/min.
In some embodiments, the QA value is independent of the rotation pressure and the model and power of the drilling platform machine, and is only related to the setting of an operator, namely, as long as the operator sets the QA value, the QA value adopted by any drilling platform truck in the process of drilling by using the method is the QA value set by the operator.
When the rotation pressure is in the PA-PB interval, representing that the drilling jamming risk exists currently, corresponding treatment is needed, the rotation pressure is increased, and meanwhile, the flow rate of the forward feeding pushing oil cylinder is reduced, so that the feeding speed of the rock drill is reduced, and the corresponding pushing flow rate is reduced from QA to QB. If the feeding and advancing speed of the rock drill is not reduced, the risk of jamming is increased, and even if the drilling machine is not jammed under the working condition, the drill bit can deflect towards a relatively soft rock or a rock with small rotation resistance, so that the straightness of drilling is affected.
In some embodiments, the PA is 9MPa, the PB is 12MPa, and the PA-PB interval is 9-12 MPa.
In some embodiments, the QB is 2-4L/min.
There are three ways of reducing the propulsion flow from QA to QB according to the mine rock conditions, which are determined by the operator to the job site according to the actual conditions (such as the level of surrounding rock, the rock type and the rock formation condition).
In some embodiments, when mine rock conditions are good, the rate of thrust flow decreases from QA to QB is slow and then fast as the rotation pressure increases.
In some embodiments, as the rotation pressure increases, the rate at which the propulsion flow decreases from QA to QB remains unchanged as the mine rock conditions are normal.
In some embodiments, when the mine rock is operating poorly, the rate of thrust flow decreases from QA to QB is first fast and then slow as the rotation pressure increases.
When the rotation pressure is higher than PB interval, the current drilling jamming risk is large, the pushing oil cylinder must reversely feed oil, and the rock drill and the drill rod are pulled out by the high-flow QC.
In some embodiments, the PB is 12Mpa.
In some embodiments, the QC is 60L/min.
In some embodiments, QC > QA, and because QB < QA, QC is related to QB, QA as QC > QA > QB.
Under normal conditions (which may be understood as when the rotation pressure is in the interval 0-PB), the rotation pressure also controls the boost pressure, which controls the percussion pressure of the rock drill.
When the rotation pressure is in the 0-PA interval, representing the current stuck risk is small, the rotation pressure does not control the propulsion pressure (it is understood that the propulsion pressure does not change with the change of the rotation pressure, and the propulsion pressure remains unchanged).
In some embodiments, the PA is 9Mpa.
In some embodiments, when the rotation pressure is within the interval of 0-9Mpa, the pushing pressure is controlled only by the control knob R100 on the console, and the pushing pressure is PFA1, and the impact pressure is PHA1.
In some embodiments, the PFA1 is 3.5-6MPa.
In some embodiments, when the rotation pressure is in the interval of 0-9Mpa, the maximum value of the propulsion pressure is PFA, and the PFA plays a role of an (R100) fuse in the invention, so that the personal safety of the rock drill and staff can be protected, the damage of the rock drill is reduced, the service life of the rock drill is relatively prolonged, and the cost is relatively reduced.
In some embodiments, the PFA is 6Mpa.
When the rotation pressure is in the PA-PB interval, representing that the drilling jamming risk exists currently, corresponding treatment is needed, the rotation pressure is increased, meanwhile, the pressure of a forward feeding pushing oil cylinder is reduced, the corresponding pushing pressure is reduced, and when the pushing pressure is reduced, the impact pressure of the rock drill is correspondingly reduced.
In some embodiments, the PA-PB interval is 9MPa to 12MPa.
In some embodiments, when the rotation pressure is within the PA-PB interval and the boost pressure is PFA1, the rotation pressure is raised while decreasing the forward feed boost cylinder pressure, the corresponding boost pressure is decreased from PFA1 to PFB, and the rock drill ram pressure is decreased when the boost pressure is decreased from PFA1 to PFB, the corresponding ram pressure is decreased from PHA1 to PHB.
In some embodiments, the PFB is 2-3MPa.
In some embodiments, when the rotational pressure is within the PA-PB interval and the boost pressure is PFA, the rotational pressure is raised while decreasing the forward feed boost cylinder pressure, the corresponding boost pressure is decreased from PFA to PFB, and the rock drill ram impact pressure is decreased when the boost pressure is decreased from PFA to PFB, and the corresponding impact pressure is decreased from PHA to PHB.
In some embodiments, the PHA is 18-21MPa and PHB is 14MPa.
In some embodiments, when a fault or cavity is encountered, the jack-up ram defines a maximum flow rate QA, the boost pressure will automatically decrease from PFA to PFB as the rock faults occur, and the jack-up ram impact pressure will decrease from PHA to PHB as the boost pressure decreases from PFA to PFB, respectively. If the rock drill encounters a high risk of jamming or a fault or a cavity, the feeding propulsion pressure and the impact pressure are not reduced, so that the risk of jamming is aggravated, the drill bit is deflected towards a relatively soft rock or a rock with small rotation resistance even if the rock drill is not jammed under the working condition, the straightness of a hole is affected, meanwhile, the high-power idle hammering of the rock drill is realized, and the durability of the drilling tool and the medium-length hole trolley is greatly reduced.
For a mixture of signal s (t) and noise n (t) =s (t) +n (t), the theory of separating signal s (t) from eta (t) according to the criterion of minimum mean square error is called wiener filtering theory. Delay is also required for the rotation pressure to enter the (0-PA) phase from the (PA-PB) phase.
In some embodiments, the entry of the rotation pressure from the (0-PA) interval to the (PA-PB) interval requires a delay of 1-2S; the entry of the rotation pressure from the (PA-PB) stage to the (0-PA) stage also requires a delay of 1-2S.
When the rotation pressure is higher than the PB zone, representing that the current stuck risk is large, the stuck thrust cylinder return point is reached, and the thrust return action is immediately performed (herein, "immediately" means without any delay).
In some embodiments, the PB is 12Mpa.
In some embodiments, the return point B is point B.
When the rotation pressure is higher than the PB interval, the pushing oil cylinder returns to act 2S, at the moment, the pushing flow is QC, the drill rod enters the circulation, and the theoretical basis for entering the circulation is that when the rotation pressure is higher than the PB interval, the rock in the range of 20 cm in front and back of the rock which is being drilled by the drill bit is also inferior rock (the rock which is being drilled by the drill bit is understood to be inferior rock, and the rock in the range of 20 cm in front and back of the rock which is being drilled by the drill bit is also inferior rock, wherein the front and back refer to the advancing direction and the returning direction of the drill bit.
In some embodiments, the PB is 12Mpa.
In some embodiments, the cycles include a first cycle, a second cycle, and a third cycle.
The first cycle is specifically: the rotation pressure is higher than 12Mpa, at which time the thrust cylinder returns to the action 2S, and if this action is performed the rotation pressure is still higher than 12Mpa, the first cycle is continued, the thrust cylinder withdraws the shank and the rock drill impact action is stopped (the rock drill impact action is stopped before the cycle).
The second cycle is specifically: after the first cycle is carried out for 2S (ensuring that the drill bit exits the stuck region in 2S), if the rotation pressure enters the (PA-PB) section, the second cycle is carried out, the propulsion flow is QB, the propulsion pressure is PFB, and the impact pressure is HB, and the parameters continue for 20S (ensuring that the drill bit can effectively pass through the stuck region under the conditions of 20S of low-parameter operation of the propulsion flow, the propulsion pressure and the impact pressure, and ensuring the stuck risk reduction and the straightness of drilling).
In some embodiments, after the propulsion flow is QB, the propulsion pressure is PFB, and the impact pressure is HB, the rotation pressure is lower than PB (12 Mpa) interval for 20S, and the working state under the normal working condition is entered.
In some embodiments, the propulsion flow is QB, the propulsion pressure is PFB, and the rotation pressure is higher than PB (12 Mpa) interval after the impact pressure is HB parameter for 20S, the first cycle is re-entered.
Third cycle: after the first cycle is performed for 2S (ensuring that the drill bit exits the stuck area in 2S), if the rotation pressure enters the (0-PA) section, the cycle 3 is entered, the propulsion flow is QB, the propulsion pressure is PFB, the impact pressure is HB, and the duration is 20S (ensuring that the drill bit can effectively pass through the stuck area under the condition that the propulsion flow, the propulsion pressure and the impact pressure run for 20S with low parameters, and ensuring the stuck risk to be reduced and the straightness of drilling to be achieved).
In some embodiments, the propulsion flow is QB, the propulsion pressure is PFB, and after the impact pressure is HB for 20S, the rotation pressure is lower than the PB (12 Mpa) interval, and the working state under the normal working condition is entered.
In some embodiments, the propulsion flow is QB, the propulsion pressure is PFB, and the rotation pressure is higher than PB (12 Mpa) interval after the impact pressure is HB parameter for 20S, the first cycle is re-entered.
The off-cycle conditions are two, and at least one of them is satisfied to be able to off the cycle.
The off cycle condition is first one for the cycle to finish itself and second one for switching from manual high power punching mode to manual low power punching mode or off mode.
The invention has the technical effects and advantages that:
1. the invention can work under severe working conditions, not only can ensure that the drill rod is not blocked in the hole, but also can ensure the straightness of drilling, and simultaneously saves drilling tools and improves the durability of the medium-length hole trolley.
2. According to the invention, the propelling flow is related to the rotating pressure, the rotating pressure is related to the propelling flow in a partition manner, and different relations are provided according to different mine rock working conditions, so that the rock drilling trolley is suitable for different mine rock working conditions, the using range of the rock drilling trolley is enlarged, and the cost is relatively reduced; and because the arrangement can enable the drilling jumbo to react to different mine rock working conditions, the energy waste is relatively reduced, and the service life of the drilling jumbo is relatively prolonged.
3. The drill clamping circulation performed when the rotation pressure is higher than 12Mpa is classified, the drill clamping circulation comprises a first circulation, a second circulation and a third circulation, a plurality of possibilities are considered, the drilling control of the drill jumbo is further finer, and the second circulation and the third circulation execute low parameters and last for 20 seconds, so that the drill clamping area can be effectively penetrated, and the drill clamping risk is reduced and the straightness of drilling is guaranteed.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiments of the invention and together with the description serve to explain the invention.
FIG. 1 is a flow chart of a method of controlling drilling of a deep hole drill jumbo in the present application;
FIG. 2 is a flow chart of a rotary pressure control thrust cylinder at full power gear of drilling of the medium-length hole drilling jumbo drilling control method of the present application;
FIG. 3 is a graph of rotary pressure controlled boost pressure and boost pressure controlled percussion pressure at full power gear of a borehole of the medium-length borehole drilling rig borehole control method of the present application;
fig. 4 is a cycle time chart of the rotary pressure higher than 12Mpa when drilling full power gear of the deep hole drilling jumbo drilling control method of the present application.
Detailed Description
The invention will be described in further detail with reference to the drawings and the detailed description. The embodiments of the invention have been presented for purposes of illustration and description, and are not intended to be exhaustive or limited to the invention in the form disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, and to enable others of ordinary skill in the art to understand the invention for various embodiments with various modifications as are suited to the particular use contemplated.
Medium-length hole drilling trolley: typical borehole diameters are 64, 76, 89, inclusive; the rock drill impact energy is selected to be 250J (joule) in the case of soft rock and 300J (joule) in the case of hard rock; the rotation speed N (r/min) of the drill bit of the rock drill; a column head on the drill bit has a impact interval of about A=10 mm; the impact frequency B of the rock drill is generally 50-60HZ, for example 60HZ
The diameter of the drill bit is D, for example 76mm
Drill bit rotation speed of rock drill
Selection of propulsion: the rotation pressure corresponding to the rotation in the idle load state of the rock drill is P (Mpa), and is generally 3-5Mpa, so that the rotation pressure when the drilling is performed by adding the propelling force is P+2 (Mpa), and the drilling is a proper propelling pressure.
Example 1
Referring to fig. 1 to 4 (the azimuth or position relationship indicated in the present embodiment is based on the azimuth or position relationship shown in fig. 1), in this embodiment, a drilling control method for a medium-length hole drilling carriage is provided, in which a hydraulic cylinder with a cylinder diameter of 70mm in the drilling carriage is directly connected to a 1838me drill, and the drilling carriage is provided with corresponding sensors and control valves for impact pressure, rotation pressure, propulsion pressure and propulsion flow, and the drilling control method for the medium-length hole drilling carriage mainly includes three steps:
step 1: the operator estimates drilling parameters according to mine rock working conditions (the mine rock working conditions comprise rock types and rock stratum conditions), wherein the drilling parameters comprise propulsion flows QA and QB, propulsion pressures PFA and PFB and impact pressures PHA and PHB, and the mine rock working conditions comprise normal working conditions and drill clamping working conditions, and the normal working conditions comprise good, general and bad;
step 2: the operator converts the estimated drilling parameters into electrical signal parameters (the conversion ratio is not fixed and can be changed, the conversion ratio is selected to be 1:1), the converted electrical signal parameters are input into the control system through a display, the relation between related parameters is established (particularly, when the rotation pressure pa=9 Mpa and pb=12 Mpa, the specific functional relation between the converted propulsion flow QA and QB and the rotation pressure is established, the specific functional relation between the converted propulsion pressure PFA and PFB and the rotation pressure is established, the converted propulsion pressure PFA and PFB and the specific functional relation between the propulsion pressure PHA and the impact pressure PHB are established, and then the display displays the electrical signal parameters of the rotation pressure, so that the actual bit rotation pressure is obtained;
step 3: whether to enter the cycle is selected according to whether the actual bit rotational pressure is greater than 12Mpa.
The mine rock conditions are good ones of the normal conditions.
When the rotation pressure is in the interval of 0-PA (PA is 9 Mpa), the current drilling sticking risk is small, the pushing flow is a straight line, the flow of the pushing oil cylinder is a pushing flow QA (QA is 10L/min) value set by full-power drilling, namely when the rotation pressure is 0-9Mpa, the pushing flow is constant to be the QA value, the rotation pressure does not control the pushing pressure at the moment, the pushing pressure is controlled by a control knob R100 on an operation table, the pushing pressure is PFA1 (PFA 1 is 5 Mpa), and the impact pressure is PHA1 (PHA 1 is 20 Mpa); when the rotation pressure is in the PA-PB (PB is 12Mpa, and PA-PB is 9-12 Mpa), representing that the drilling jamming risk exists currently, corresponding treatment is needed, the rotation pressure is increased, and meanwhile, the flow rate of a forward feeding pushing oil cylinder is reduced, so that the feeding speed of the rock drill is reduced (if the feeding pushing speed of the rock drill is not reduced, the drilling jamming risk is increased, even if the drilling bit is not jammed under the working condition, the drilling bit can deflect towards a relatively soft rock or a rock with small rotation resistance, the straightness of drilling is affected), and the corresponding pushing flow rate is reduced from QA to QB (QA is 10L/min, and QB is 3L/min) along with the increase of the rotation pressure, the speed of the pushing flow rate from QA to QB is firstly reduced and then is increased, and the lowering mode refers to an upward convex curve from A to B in FIG. two;
the rotation pressure is increased, and simultaneously, the pressure of a forward feeding propelling cylinder is reduced, the corresponding propelling pressure is reduced from PFA1 to PFB (PFB is 2Mpa, namely, from 5Mpa to 2 Mpa), and the reduction mode refers to the curves from A1 to B in the third graph;
the impact pressure of the rock drill is reduced when the advancing pressure is reduced from PFA1 to PFB, and the corresponding impact pressure is reduced from PHA1 to PHB (PHB is 14Mpa, i.e. from 20Mpa to 14 Mpa), in a manner referred to the curve of HA1 to HB in fig. three.
For a mixture eta (t) of a signal S (t) and a noise n (t) =s (t) +n (t), the theory of separating the signal S (t) from the eta (t) according to the criterion of minimum mean square error is called wiener filtering theory, wiener filtering is one of optimal linear filtering and prediction or linear optimal estimation, and the optimal mean square value of the error between an estimation result and a signal true value is the optimal criterion, wiener filtering is used for estimating the current value of the signal according to all past and current observation data, and the solution is given in the form of a transfer function H (z) or a unit impulse H (n), and the solution is used for a stable system (optimal linear filter) through convolution and correlation, so that the stable performance of state switching is ensured, and the rotation pressure (0-PA) interval is required to enter the (PA-PB) interval and delay is 1-2S; the entry of the (PA-PB) phase into the (0-PA) phase requires a delay of 1-2S.
When the rotation pressure is higher than PB (12 Mpa), the current drilling jamming risk is large, the pushing oil cylinder must reversely feed oil, and the rock drill and the drill rod are pulled out by using high flow QC (QC is 60L/min). The stuck advance cylinder return point is reached and the advance return action is immediately performed (without any delay).
Example 2
Referring to fig. 1 to 4, in this embodiment, the mine rock working condition is a normal working condition in the normal working condition, the speed of reducing the propulsion flow from QA to QB is kept unchanged with the increase of the rotation pressure, the reducing mode refers to the straight line from a to B in fig. two, and the rest of the structures and the arrangement are the same as those in embodiment 1.
Example 3
Referring to fig. 1 to 4, in this embodiment, the mine rock working condition is a severe working condition in the normal working condition, and the speed of reducing the propulsion flow from QA to QB is first fast and then slow with increasing rotation pressure, and the reducing mode refers to the concave curves from a to B in fig. two, and the rest structures and the arrangement are the same as those in embodiment 1.
Example 4
Referring to fig. 1-4, in the present embodiment, the operating condition is a good operating condition among the normal operating conditions,
when the rotation pressure is in the 0-PA (PA is 9 Mpa) interval, the propulsion pressure is PFA (PFA is 6Mpa, and the PFA plays the role of an (R100) fuse in the invention, so that the personal safety of a rock drill and a worker can be protected, the damage of the rock drill is reduced, the service life of the rock drill is relatively prolonged, the cost is relatively reduced, and the impact pressure is PHA (PHA is 21 Mpa);
the rotation pressure is increased, and simultaneously the pressure of the forward feeding propelling cylinder is reduced, the corresponding propelling pressure is reduced from PFA (R100) to PFB (PFB is 2Mpa, namely from 6Mpa to 2Mpa when (R100) is maximum), the reduction mode refers to the curves from A to B in the third graph,
decreasing the impact pressure of the rock drill when the propelling pressure is decreased from PFA to PFB, and correspondingly decreasing the impact pressure from PHA to PHB (PHB is 14Mpa, namely, from 21Mpa to 14 Mpa), wherein the decreasing mode refers to the curve from HA to HB in the third graph; the rest of the structure and arrangement are the same as in embodiment 1.
Example 5
Referring to fig. 1 to 4, in this embodiment, the mine rock working condition is a normal working condition in the normal working condition, the speed of reducing the propulsion flow from QA to QB is kept unchanged with the increase of the rotation pressure, the reducing mode refers to the straight line from a to B in fig. two, and the rest of the structures and the arrangement are the same as those in embodiment 4.
Example 6
Referring to fig. 1 to 4, in this embodiment, the mine rock working condition is a severe working condition in the normal working condition, and the speed of reducing the propulsion flow from QA to QB is first fast and then slow with increasing rotation pressure, and the manner of reducing is referred to the concave curves from a to B in fig. two, and the rest of the structure and the arrangement are the same as those in embodiment 4.
Example 7
In this embodiment, the working condition of mine rock is fault or cavity, the maximum flow rate of the jack-drill thrust cylinder is defined as QA (QA is 10L/min), the thrust pressure of the thrust cylinder in this state is the feedback conversion pressure of truly contacting rock, the contact condition of the drill bit and rock can be well simulated (i.e. the pressure depends on the load), and if the QA value is large, the thrust pressure of the thrust cylinder is mostly the pressure loss of the hydraulic pipeline (the pressure does not depend on the load, but depends on the flow rate, and causes distortion).
When encountering faults or cavities, the propelling pressure can be automatically reduced from PFA to PFB according to the condition that the drill bit is contacted with rock, the reduction mode refers to the curve from A to B in the third graph, when the propelling pressure is reduced from PFA to PFB, the impact pressure of the rock drill is correspondingly reduced, the reduction mode refers to the curve from HA to HB in the third graph, the corresponding impact pressure is reduced from PHA to PHB (if the rock drill encounters a high jamming risk or encounters a fault or cavity, the feeding propelling pressure and the impact pressure are not reduced, the jamming risk is increased, even if the drill bit is not jammed under the working condition, the drill bit can deflect towards a relatively soft rock or a rock with small rotation resistance, the straightness of the hole is influenced, simultaneously, the high-power idle hammering of the rock drill is greatly reduced, and the durability of the drilling tool and the medium deep hole trolley is greatly reduced), and the rest structures are the same as in the embodiment 1.
Example 8
Referring to fig. 1 to 4, in this embodiment, the mine rock working condition is a drill clamping condition, at this time, the rotation pressure is in a range higher than PB (PB is 12 Mpa), the drill clamping enters the circulation, and the theoretical basis for entering the circulation is that when the rotation pressure is in a range higher than PB, the rock within 20 cm before and after the rock being drilled by the drill bit is also bad rock (it is understood that the rock being drilled by the drill bit is bad rock, and the rock within 20 cm before and after the rock being drilled by the drill bit is also bad rock, where "front and back" refers to the forward direction and the return direction of the drill bit).
The rotation pressure is higher than 12Mpa, the pushing cylinder returns to the action 2S at this time, the rotation pressure is still higher than 12Mpa, then the first cycle is always performed, the pushing cylinder withdraws the drill rod with a high flow QC (QC is 60L/min), and the impact action of the rock drill is stopped (the impact action of the rock drill is stopped before the cycle is performed).
Example 9
Referring to fig. 1 to 4, in the present embodiment, after the first cycle is performed for 2S (to ensure that the drill bit exits the stuck area within 2S), the rotation pressure enters the (PA-PB) section (PA is 9Mpa, PB is 12Mpa, and PA-PB is 9-12 Mpa), at this time, the second cycle is entered, the thrust flow is QB (QB is 3L/min), the thrust pressure is PFB (PFB is 2 Mpa), and the impact pressure is PHB (PHB is 14 Mpa) parameters and lasts for 20S (to ensure that the drill bit can effectively pass through the stuck area under the conditions of the thrust flow, the thrust pressure, and the impact pressure running for 20S, to ensure the stuck risk reduction and the straightness of drilling);
after the duration of 20S, the rotation pressure was lower than PB (12 Mpa), and the graph was followed, and the rest was the same as in example 8.
Example 10
Referring to fig. 1 to 4, in this embodiment, after the duration of 20S, the rotation pressure is higher than PB (PB is 12 Mpa) interval, the first cycle of the third figure is re-entered, and the rest is the same as in embodiment 9.
Example 11
Referring to fig. 1 to 4, in the present embodiment, after the first cycle is performed for 2S (ensuring that the drill bit exits the stuck area within 2S), if the rotation pressure enters the (0-PA) interval, the third cycle 3 is performed, where the thrust flow rate is QB (QB is 3L/min), the thrust pressure is PFB (PFB is 2 Mpa), and the impact pressure is PHB (PHB is 14 Mpa) parameters last for 20S (ensuring that the drill bit can effectively pass through the stuck area under the conditions of running the low parameters of the thrust flow rate, the thrust pressure, and the impact pressure for 20S, thereby ensuring the risk of stuck drilling and straightness of drilling);
after the duration of 20S, the rotation pressure was lower than PB (12 Mpa), and the graph was followed, and the rest was the same as in example 8.
Example 12
Referring to fig. 1 to 4, in this embodiment, after the duration of 20S, the rotation pressure is higher than the PB (12 Mpa) interval, the first cycle of fig. four is re-entered, and the rest is the same as in embodiment 11.
Example 13
In this embodiment, when the first cycle finishes its own cycle, the drill rod disconnects the first cycle; when the second cycle finishes the self-circulation, the drill rod is blocked to disconnect the second cycle; when the third cycle is completed, the drill rod is disconnected from the third cycle.
Example 14
In this embodiment, the drill rod is disconnected from the cycle when the drill rig switches from a manual high power drilling mode to a manual low power drilling mode or a shut down mode.
It will be apparent that the described embodiments are only some, but not all, embodiments of the invention. All other embodiments, which can be made by those skilled in the art and which are included in the embodiments of the present invention without the inventive step, are intended to be within the scope of the present invention. Structures, devices and methods of operation not specifically described and illustrated herein, unless otherwise indicated and limited, are implemented according to conventional means in the art.
Claims (10)
1. The drilling control method of the medium-length hole drilling trolley is characterized by comprising the following steps of:
step 1: calculating drilling parameters according to mine rock working conditions, wherein the mine rock working conditions comprise rock types and rock stratum conditions, and the drilling parameters comprise propulsion flow, propulsion pressure and impact pressure;
step 2: converting the drilling parameters, converting the drilling parameters into electric signal parameters, and inputting the converted electric signal parameters into a control system through a display;
step 3: selecting different working phases according to the actual bit rotation pressure;
in the step 3, the working phases include a first working phase, a second working phase and a third working phase, the rotation pressure is provided with a preset value, the preset value includes a first rotation pressure preset value and a second rotation pressure preset value, and the first rotation pressure preset value is smaller than the second rotation pressure preset value; when the actual bit rotation pressure is smaller than a first rotation pressure preset value, selecting a first working stage by the drilling trolley; selecting a second working stage by the drilling trolley when the actual bit rotation pressure is between the first rotation pressure preset value and the second rotation pressure preset value; and selecting a third working stage by the drilling trolley when the actual bit rotation pressure is greater than the second rotation pressure preset value.
2. The medium-length hole drill jumbo drilling control method according to claim 1 characterized in that the propulsion flow comprises a first propulsion flow, a second propulsion flow and a third propulsion flow, the propulsion pressures comprise a first propulsion pressure and a second propulsion pressure, the percussion pressures comprise a first percussion pressure and a second percussion pressure; when the rotation pressure is a first rotation pressure preset value, the corresponding propulsion flow is a first propulsion flow, the propulsion pressure is a first propulsion pressure, and the impact pressure is a first impact pressure; when the rotation pressure is the second rotation pressure preset value, the corresponding propulsion flow is the second propulsion flow, the propulsion pressure is the second propulsion pressure, and the impact pressure is the second impact pressure.
3. The method according to claim 1, wherein in the first working stage, the propulsion flow is a first propulsion flow, the propulsion pressure is a first propulsion pressure, and the impact pressure is a first impact pressure.
4. A method of controlling drilling of a medium length hole drill jumbo according to claim 1 characterized in that the second working phase comprises three working modes, in which the propulsion flow is reduced from a first propulsion flow to a second propulsion flow.
5. A method of controlling drilling of a medium-length hole drill jumbo according to claim 1, characterized in that in the second working phase the rotation pressure controls the propulsion flow and the propulsion pressure, which decreases as the rotation pressure increases; the boost pressure controls the percussion pressure of the rock drill, which is reduced as the boost pressure is reduced.
6. A medium length hole drill jumbo drilling control method according to claim 1 characterized in that the third working phase comprises three circulation modes, including a first circulation mode, a second circulation mode and a third circulation mode.
7. The method according to claim 6, wherein the third working stage is a circulation stage, and after the thrust cylinder enters the return stage, it is determined whether to enter the first circulation mode, the second circulation mode, or the third circulation mode according to the measured rotation pressure.
8. The method according to claim 6, wherein when the drill jumbo enters the third working stage, in the case where the push cylinder enters the return stage and stops the impact, the drill jumbo enters the first circulation mode if the measured rotation pressure is greater than the second rotation pressure preset value.
9. The method according to claim 6, wherein when the drill jumbo enters the third working stage, in the case where the push cylinder enters the return stage and stops the impact, if the measured rotation pressure is between the first rotation pressure preset value and the second rotation pressure preset value, the drill jumbo enters the second circulation mode;
after the drilling jumbo enters the second circulation mode, the drilling jumbo enters a propulsion stage, and if the measured rotation pressure is smaller than a second rotation pressure preset value, the drilling jumbo enters a first working stage or a second working stage; otherwise the drill jumbo enters the first circulation mode.
10. The method according to claim 6, wherein when the drill jumbo enters the third working stage, in the case where the push cylinder enters the return stage and stops the impact, if the measured rotation pressure is smaller than the first rotation pressure preset value, the drill jumbo enters the third circulation mode;
after the drilling jumbo enters the third circulation mode, the drilling jumbo enters a propulsion stage, and if the measured rotation pressure is smaller than a second rotation pressure preset value, the drilling jumbo enters a first working stage or a second working stage; otherwise the drill jumbo enters the first circulation mode.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310612950.9A CN116498293A (en) | 2023-05-29 | 2023-05-29 | Drilling control method for medium-length hole drilling trolley |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310612950.9A CN116498293A (en) | 2023-05-29 | 2023-05-29 | Drilling control method for medium-length hole drilling trolley |
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| CN202310612950.9A Pending CN116498293A (en) | 2023-05-29 | 2023-05-29 | Drilling control method for medium-length hole drilling trolley |
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| Country | Link |
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- 2023-05-29 CN CN202310612950.9A patent/CN116498293A/en active Pending
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