CN107503733B - High-pressure rotary jet grouting parameter monitoring system and method and high-pressure rotary jet drilling machine - Google Patents
High-pressure rotary jet grouting parameter monitoring system and method and high-pressure rotary jet drilling machine Download PDFInfo
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- CN107503733B CN107503733B CN201710969593.6A CN201710969593A CN107503733B CN 107503733 B CN107503733 B CN 107503733B CN 201710969593 A CN201710969593 A CN 201710969593A CN 107503733 B CN107503733 B CN 107503733B
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- 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
- 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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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/22—Piles
- E02D5/34—Concrete or concrete-like piles cast in position ; Apparatus for making same
- E02D5/46—Concrete or concrete-like piles cast in position ; Apparatus for making same making in situ by forcing bonding agents into gravel fillings or the soil
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- 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
- E21B21/00—Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor
- E21B21/08—Controlling or monitoring pressure or flow of drilling fluid, e.g. automatic filling of boreholes, automatic control of bottom pressure
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- 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
- E21B45/00—Measuring the drilling time or rate of penetration
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- 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
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- 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
- E21B47/02—Determining slope or direction
- E21B47/022—Determining slope or direction of the borehole, e.g. using geomagnetism
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- 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
- E21B47/04—Measuring depth or liquid level
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- 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
- E21B47/06—Measuring temperature or pressure
Abstract
The invention relates to a high-pressure rotary jetting grouting parameter monitoring system, a high-pressure rotary jetting drilling machine and a method thereof, wherein the monitoring system comprises a data processing module (4), a drilling parameter detection module (5) and/or a grouting parameter detection module (6), the drilling parameter detection module (5) is used for detecting drilling machine action parameters in the rotary jetting process of the high-pressure rotary jetting drilling machine, the grouting parameter detection module (6) is used for detecting fluid parameters in the rotary jetting process, and the data processing module (4) is used for receiving detection results of the drilling parameter detection module (5) and/or the grouting parameter detection module (6) and processing the detection results to obtain a plurality of operation parameters of the high-pressure rotary jetting drilling machine. The monitoring system can acquire key parameters in the high-pressure jet grouting process in real time so as to conveniently control the quality of the jet grouting pile, improve the accuracy and efficiency of monitoring the quality of the jet grouting pile, and timely take adjustment measures when abnormality occurs in the construction process so as to ensure the construction quality.
Description
Technical Field
The invention relates to the technical field of high-pressure rotary jetting, in particular to a high-pressure rotary jetting grouting parameter monitoring system and method and a high-pressure rotary jetting drilling machine.
Background
The high-pressure jet grouting pile is widely applied to various foundation engineering, such as building foundation, foundation pit support, shield entrance and exit hole reinforcement, dam seepage prevention, existing building foundation reinforcement, slope reinforcement, tunnel advanced support and the like.
The high-pressure jet grouting drilling machine is key construction equipment of the high-pressure jet grouting pile, and is matched with a high-pressure slurry pump, a high-pressure water pump or an air compressor to complete high-pressure jet grouting construction. The high-pressure jet grouting technology is characterized in that a drilling machine is used for drilling a grouting pipe with a nozzle into a preset position of a soil layer, then high-pressure equipment is used for enabling slurry, water or air to be high-pressure jet flow of 20-50 MPa to be jetted out from the nozzle, soil body is punched, disturbed and destroyed, meanwhile, a drill rod rotates at a certain speed and is gradually lifted, the slurry and soil particles are forcibly stirred and mixed, after the slurry is solidified, a cylindrical solidification body, namely a jet grouting pile, is formed in the soil, and the effects of foundation reinforcement or water and seepage prevention can be achieved.
As the jet grouting pile belongs to concealed engineering and has great difficulty in quality acceptance, the monitoring and recording of pile forming parameters in the construction process are particularly important. At present, seepage-proofing projects with strict requirements on engineering quality, such as high-pressure jet grouting pile construction related to water conservancy and hydropower projects, for example, reinforcing and seepage-proofing of dams, ports and channel embankments and the like, all require a jet grouting drilling machine to be provided with a parameter monitoring system, and guarantee real-time monitoring of various operation parameters in the construction process. Therefore, in the jet grouting construction engineering, the jet grouting parameter monitoring system is also paid more and more attention by users.
However, the current domestic high-pressure jet drilling machines are not provided with a complete parameter monitoring system; in China, no manufacturer specially studies the complete parameter monitoring technology of high-pressure jet grouting, and in the jet grouting construction process, parameters such as mast inclination angle, rotation speed, lifting speed, nozzle depth and the like are completely observed manually, so that the error is large and the efficiency is low; parameters of background equipment such as slurry pressure, slurry flow, air pressure and the like cannot be obtained by operators of front-end drilling machines, and reasonable operation on the drilling machines cannot be carried out.
Disclosure of Invention
The invention aims to provide a high-pressure rotary jet grouting parameter monitoring system and method and a high-pressure rotary jet drilling machine, which can conveniently monitor multiple parameters in the high-pressure rotary jet grouting process.
According to an aspect of the invention, a high-pressure jet grouting parameter monitoring system is provided, which comprises: the device comprises a data processing module, a drilling parameter detection module and/or a grouting parameter detection module, wherein the drilling parameter detection module is used for detecting drilling machine action parameters in the rotary jetting process of the high-pressure rotary jetting drilling machine, the grouting parameter detection module is used for detecting fluid parameters in the rotary jetting process, and the data processing module is used for receiving detection results of the drilling parameter detection module and/or the grouting parameter detection module and processing the detection results to obtain a plurality of operation parameters of the high-pressure rotary jetting drilling machine.
Furthermore, the high-pressure jet grouting parameter monitoring system also comprises a display module which is used for displaying each operation parameter processed by the data processing module and/or giving an alarm when the operation parameter exceeds the set range of a user.
Furthermore, the high-pressure jet grouting parameter monitoring system further comprises a storage module used for storing each operation parameter processed by the data processing module.
Furthermore, the drilling parameter detection module comprises a drilling inclination angle detection unit, and the drilling inclination angle detection unit comprises an inclination angle sensor arranged in the middle of the mast and used for detecting the inclination angle of the drill rod relative to the vertical direction in the operation process.
Furthermore, the drilling parameter detection module comprises a lifting/propelling speed detection unit, the lifting/propelling speed detection unit comprises a stay wire length sensor, the main body part of the stay wire length sensor is arranged above the highest point of the power head stroke at the top of the mast, and the stay wire is fixed on the power head bracket and used for measuring the displacement of the stay wire to obtain the lifting/propelling speed when the power head is lifted/propelled.
Further, drilling parameter detection module includes drill bit degree of depth detecting element, and drill bit degree of depth detecting element includes the length sensor of acting as go-between and holds the proximity switch that the mechanism corresponds the setting with holder, unit head respectively, and the length sensor of acting as go-between is used for detecting the motion displacement of unit head, and data processing module can be under proximity switch detects that the unit head holds the state that the mechanism held the drilling rod tightly and holder unclamped, the effective displacement of accumulative power head motion in-process to obtain the degree of depth position of drill bit.
Further, under the drilling working condition, the data processing module takes the accumulated effective displacement in the propelling process of the power head as the depth of the drill bit; under the condition of rotary jet lifting, the data processing module subtracts the effective displacement accumulated in the rotary jet lifting process of the power head from the total drilling depth of the drill bit as the depth position of the drill bit.
Further, parameter detection module that drills includes drill bit rotational speed detecting element, and drill bit rotational speed detecting element includes proximity switch and the detachably nestification fluted disc that tests the speed at the rotatory position of unit head, and proximity switch can detect and test the number of teeth that tests the speed fluted disc pivoted and obtain the drill bit rotational speed.
Further, the drilling parameter detection module includes a propel pressure sensor for detecting a propel motor oil circuit pressure.
Further, the drilling parameter detection module comprises a hole milling pressure sensor for detecting the pressure of an oil inlet circuit of the rotary motor.
Further, the grouting parameter detection module comprises a mud pressure sensor for detecting the pressure at the mud inlet of the rotary jetting flow divider;
the grouting parameter detection module comprises a water pressure sensor and is used for detecting the pressure at the high-pressure water inlet of the jet grouting flow divider; and/or
The grouting parameter detection module comprises an air pressure sensor for detecting the pressure at the compressed air inlet of the rotary jet flow divider.
Furthermore, the grouting parameter detection module comprises a mud flow detection unit, the mud flow detection unit comprises a wireless communication unit and a mud pump proximity sensor, and the mud pump proximity sensor is used for detecting the pumping frequency of the mud pump and sending the pumping frequency to the data processing module through the wireless communication unit so as to indirectly obtain the mud flow;
the grouting parameter detection module comprises a water flow detection unit, the water flow detection unit comprises a wireless communication unit and a water pump proximity sensor, and the water pump proximity sensor is used for detecting the pumping frequency of the water pump and sending the pumping frequency to the data processing module through the wireless communication unit so as to indirectly obtain the water flow; and/or
The grouting parameter detection module comprises an air flow detection unit, and the air flow detection unit comprises an air flow sensor and is used for detecting the flow at the air inlet of the rotary jet flow divider.
According to another aspect of the invention, a high-pressure rotary jet drilling machine is provided, which comprises the high-pressure rotary jet grouting parameter monitoring system of the embodiment.
According to another aspect of the invention, a method for monitoring high-pressure jet grouting parameters is provided, which comprises the following steps:
the drilling parameter detection module detects drilling machine action parameters in the rotary jetting process of the high-pressure rotary jetting drilling machine, and/or the grouting parameter detection module detects fluid parameters in the rotary jetting process;
and the data processing module receives the detection results of the drilling parameter detection module and/or the grouting parameter detection module and processes the detection results to obtain a plurality of operation parameters.
Further, the method for monitoring the high-pressure jet grouting parameters further comprises the following steps: the display module displays each operation parameter processed by the data processing module and/or gives an alarm when the operation parameter exceeds the set range of the user.
Further, the method for monitoring the high-pressure jet grouting parameters further comprises the following steps: and the storage module stores each operation parameter processed by the data processing module.
Based on the technical scheme, the high-pressure jet grouting parameter monitoring system provided by the embodiment of the invention can acquire the key parameters in the high-pressure jet grouting process in real time through the drilling parameter detection module and/or the grouting parameter detection module so as to conveniently control the quality of the jet grouting pile, an operator does not need to observe and judge the quality according to experience, the accuracy and the efficiency of monitoring the quality of the jet grouting pile can be improved, so that adjustment measures can be taken in time when an abnormality occurs in the construction process, the construction quality is ensured, and the system is suitable for anti-seepage engineering and the like with strict requirements on the engineering quality.
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 embodiment(s) of the invention and together with the description serve to explain the invention without limiting the invention. In the drawings:
FIG. 1 is a schematic block diagram of a high-pressure jet grouting parameter monitoring system according to an embodiment of the invention;
FIG. 2 is a schematic block diagram of another embodiment of the high-pressure jet grouting parameter monitoring system according to the invention;
FIG. 3 is a schematic diagram illustrating the mast inclination angle detection in the high-pressure jet grouting parameter monitoring system according to the present invention.
Detailed Description
The present invention is described in detail below. In the following paragraphs, different aspects of the embodiments are defined in more detail. Aspects so defined may be combined with any other aspect or aspects unless clearly indicated to the contrary. In particular, any feature considered to be preferred or advantageous may be combined with one or more other features considered to be preferred or advantageous.
In the description of the present invention, it is to be understood that the terms "length", "width", "height", "up", "down", "left" and "right", etc., indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention, and do not indicate or imply that the device referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, should not be construed as limiting the scope of the present invention.
The terms "first", "second", and the like in the present invention are merely for convenience of description to distinguish different constituent elements having the same name, and do not denote a sequential or primary-secondary relationship.
In the construction process of the high-pressure jet grouting drilling machine, various drilling parameters and grouting parameters directly influence the quality of the jet grouting pile. For example: the nozzle depth influences the pile-forming depth, the jet pressure influences the pile-forming diameter, the lifting speed influences the pile-forming diameter and the pile body strength, the rotating speed influences the pile-forming diameter and the pile body strength, the slurry flow influences the pile body strength and other parameters.
In order to conveniently detect parameters influencing construction quality in the construction process of a high-pressure jet grouting drilling machine, the invention provides a high-pressure jet grouting parameter monitoring system, which comprises the following components in an illustrative embodiment as shown in figure 1: a data processing module 4, a drilling parameter detection module 5 and/or a grouting parameter detection module 6. The drilling parameter detection module 5 is configured to detect drilling machine operation parameters, such as a current drill bit depth, a thrust pressure, a hole milling pressure, a lifting speed, a rotation speed, or a drilling angle, during a rotary jetting process of the high-pressure rotary jetting drilling machine, and send the parameters to the data processing module 4. The grouting parameter detection module 6 is used for detecting fluid parameters, such as mud pressure, mud flow, water pressure, water flow, air pressure or air flow, in the rotary jetting process and sending the parameters to the data processing module 4. The data processing module 4 may adopt a central processing unit, and is configured to receive the detection results of the drilling parameter detection module 5 and/or the grouting parameter detection module 6, and perform processing to obtain multiple operation parameters of the high-pressure jet grouting drilling machine.
The monitoring system of the invention is an electronic comprehensive monitoring device used in the high-pressure rotary jet grouting construction process, can automatically detect a plurality of key parameters in the construction process in real time so as to conveniently control the quality of a rotary jet pile, can improve the accuracy and efficiency of monitoring the quality of the rotary jet pile, can timely take adjustment measures when abnormality occurs in the construction process, ensures the construction quality, and is suitable for seepage-proofing projects and the like with strict requirements on the engineering quality.
Further, as shown in fig. 1, the high-pressure jet grouting parameter monitoring system of the present invention may further include a display module 2 for displaying each operation parameter processed by the data processing module 4 in real time, so that an operator can directly and timely grasp the construction parameters, and can take adjustment measures in time under abnormal conditions, thereby ensuring the engineering quality. Referring to fig. 2, the display module 2 may be a display capable of displaying data information detected by the data processing module 4, such as current nozzle depth, rotation speed, lifting speed, mud pressure, air pressure, mud flow rate, etc., to an operator in real time. Preferably, the display module 2 may be embedded with a data analysis program, and may present the detected construction data to the operator in a graphical and graphical form.
In order to more obviously remind the operator, the display module 2 can also judge the current working state according to the initial user setting range of the user and send out an alarm when the operation parameter exceeds the user setting range so as to remind the operator to take safety measures in time.
Further, as shown in fig. 1, the high-pressure jet grouting parameter monitoring system of the present invention may further include an input module 1, where the input module 1 includes a physical key and/or a virtual keyboard (touch screen) for an operator to select a working mode, set a safe working range of each parameter, and manually input jet grouting information (such as water cement ratio, cement number, pile number, geological conditions, etc.) that cannot be detected but needs to be recorded by the system.
Further, as shown in fig. 1, the high-pressure jet grouting parameter monitoring system of the present invention further includes a storage module 3, which is used for storing each operation parameter processed by the data processing module 4, and the storage module 3 is responsible for storing the detected data once every a period of time. The storage module 3 can record and store the dynamic change of each parameter in the rotary spraying construction process, so that a construction unit can analyze relevant data in the construction process after the project is finished. Preferably, the display module 2 and the storage module 3 may be provided as one body.
Referring to fig. 2, various operation parameters in the high-pressure jet grouting construction process may be stored in the memory card through the data interface, so that an operator may transmit data to a computer for related analysis, for example, fault diagnosis when a quality problem occurs in a jet grouting pile. In other embodiments, if the data processing module 4 is provided with a fault diagnosis program, the data processing module 4 may directly analyze the detection results of the parameter detection module 5 and/or the grouting parameter detection module 6 to perform online fault monitoring on the construction process, or may also retrieve parameters from the storage module 3 to perform analysis.
The detection units in the drilling parameter detection module 5 and the grouting parameter detection module 6 will be described in detail with reference to fig. 2. Wherein, the drilling parameter detecting module 5 may include: inclination sensor 51, stay wire length sensor 52, proximity switch 53, propulsion pressure sensor 54 and/or milling hole pressure sensor 55, etc., and grouting parameter detection module 6 may include mud pressure sensor 61, water pressure sensor 62, air pressure sensor 63, mud pump proximity sensor 64, water pump proximity sensor 65, and/or air flow sensor 66, etc. Each detection unit can be selected and configured according to the actual functional requirements.
(1) And (3) detecting a drilling inclination angle:
the drilling parameter detection module 5 comprises a drilling inclination angle detection unit to ensure the perpendicularity of the jet grouting pile relative to the horizontal plane. The drill inclination detection unit comprises an inclination sensor 51 arranged in the middle of the mast for detecting the inclination of the drill rod with respect to the vertical during operation.
Preferably, the tilt sensor 51 is a dual-axis tilt sensor, the range of each axis is ± 90 °, the tilt sensor 51 is installed in the middle of the mast, and the tilt sensor 51 is horizontally placed with the mast perpendicular to the ground as a reference. After the installation is finished, calibrating the inclination angle of the inclination angle sensor 51 by using a theodolite, referring to a drilling state top view shown in fig. 3 in the specific process, calibrating the left and right directions of the mast with a rectangular section in a horizontal plane as an X axis, and calibrating the front and back directions as a Y axis; then, calibration is performed by the theodolite, since the drill rod is movably detachable, calibration is performed by using the rotation axis of the power head, and when the rotation axis of the power head is perpendicular to the ground, the offset of the power head in the X-axis and Y-axis directions at this time is calibrated to be zero in a program to serve as a reference zero position of the tilt sensor 51. After the initial position calibration is finished, the double-shaft tilt angle sensor can detect the offset of the rotation axis of the power head in the X-axis direction and the Y-axis direction. Because the position of the rotation axis of the power head and the position of the mast are relatively fixed, the inclination angle of the mast can be measured, and the drilling inclination angle can be obtained.
(2) Lift/propel speed detection:
the drilling parameter detection module 5 may further include a lifting/pushing speed detection unit to ensure the diameter and the pile body strength of the jet grouting pile. The lifting/propelling speed detection unit comprises a stay wire length sensor 52, the main body part of the stay wire length sensor 52 is arranged above the highest point of the power head stroke at the top of the mast, and the stay wire is fixed at a proper position on the power head bracket. When the power head is lifted/pushed, the data processing module 4 automatically records the difference value and the time difference value of the stay cord displacement of the stay cord length sensor 52 in different states, and then the lifting/pushing speed can be obtained by dividing the displacement by the time. The stay wire length sensor has the advantages of high precision, good repeatability, high detection reliability, long service life and the like.
(3) Detecting the depth of the drill bit:
the drilling parameter detection module 5 comprises a drill bit depth detection unit to ensure the depth of the jet grouting pile. The drill bit depth detection unit comprises a stay wire length sensor 52 and a proximity switch 53 which is respectively arranged corresponding to the holder and the power head clasping mechanism, the stay wire length sensor 52 is used for detecting the actual movement displacement of the power head, the data processing module 4 can accumulate the effective displacement of the power head in the movement process when the proximity switch 53 detects that the power head clasping mechanism clasps the drill rod and the holder is loosened, so as to obtain the current depth position of the drill bit. The data processing module 4 is able to identify valid and invalid displacements of the power head, thereby removing the invalid displacements and accumulating the valid displacements to obtain the bit depth position. The drilling operation and the jet lift operation will be described below.
Drilling working conditions are as follows: when the drilling is started, when the drill bit is lowered to the ground, the drilling depth at the moment is defined as a depth zero position through manual confirmation, and the initialization of the drilling depth is realized. The proximity switch 53 detects that the power head holds the drill rod tightly every time and the state of the clamp holder is loosened, the propelling displacement of the power head is judged to be effective displacement, and the accumulation of the effective displacement for many times is the total drilling depth of the drill bit, namely the drill bit depth.
When the target drilling depth is large and a rod needs to be added, the clamp holder clamps the lower drill rod in the rod changing process, and because the elevator and the drill rod are in a clamping state at the moment, the power head is reversely screwed and moves upwards to enable the elevator to loosen the drill rod, and a new drill rod is arranged between the original drill rod and the elevator to realize the rod adding, the advancing or lifting displacement of the power head in the process is defined as invalid displacement and is not counted in the total depth of the drilling stage.
When the auxiliary arm is arranged on the mast (equivalently, the mast is lengthened), more drill rods can be arranged at the same time, if the length of the drill rod can meet the requirement of the target drilling depth without adding the drill rod, the power head can be clamped by the clamp when being pushed to the bottommost part of the travel, the power head is enabled to loosen the drill rod to lift in an idle load manner, the drill rod is clamped when being lifted to a proper position, and the clamp is loosened to carry out pushing in a larger depth. In the no-load lifting process of the power head, the power head does not tightly hold the drill rod and also belongs to invalid displacement, and the invalid displacement is not counted into the total depth of a drilling stage.
And (3) rotary spraying lifting working condition: when the drill bit drills to a specified depth, the drill bit starts to be converted into a rotary lifting state from the drilling state, and in the process, the data processing module 4 subtracts the effective displacement accumulated in the rotary spraying lifting process of the power head from the drilling total depth of the drill bit to be used as the current depth position of the drill bit.
In contrast to the drilling process, when the drill bit is lifted up step by step to remove the drill rod, the gripper grips the lower drill rod and moves it up by screwing the power head in the opposite direction to remove the drill rod, for example, in the middle, so that the displacement of the power head for advancing or lifting is defined as the lost displacement, not counted in the total depth of the lifting phase.
When the power head is lifted to the top of the stroke without unloading the drill rod, the drill rod can be clamped by the clamp holder, the power head releases the drill rod and carries out no-load propulsion, when the power head is propelled to a proper position, the drill rod is clamped again, and the clamp holder is loosened to carry out lifting at a larger height. In the no-load propelling process of the power head, the power head does not tightly hold the drill rod and also belongs to invalid displacement, and the invalid displacement is not counted into the total depth of a lifting stage.
(4) Detecting the rotating speed of the drill bit:
the drilling parameter detection module 5 can also comprise a drill bit rotating speed detection unit so as to ensure the pile body diameter and the pile forming quality of the jet grouting pile. The drill bit rotational speed detecting unit comprises a proximity switch 53 and a speed measuring fluted disc detachably nested at the rotating part of the power head, and the proximity switch 53 can detect the number of teeth of the speed measuring fluted disc to obtain the rotational speed of the drill bit. Because the unit head diameter is less, and the position space is comparatively limited, therefore generally with the drill bit rotational speed detection sensor integrated inside the unit head among the prior art, the cost is higher, in addition in case the sensor breaks down will be difficult to change. The invention adopts an external speed measuring structure, can design the number of teeth of a single circle of the speed measuring fluted disc into 32 by arranging the motion conversion mechanism, can achieve higher detection precision, can be used for power heads with different specifications, adopts detachable assembly type installation, does not need welding and is convenient to maintain.
(5) And (3) detection of the propelling pressure:
the drilling parameter sensing module 5 may also include a boost pressure sensor 54 for sensing boost motor oil circuit pressure to derive a boost pressure for the powerhead.
(6) And (3) detecting the milling hole pressure:
the drilling parameter detection module 5 may further include a milling pressure sensor 55 for detecting the pressure in the oil circuit of the rotary motor to obtain the milling pressure of the drill bit.
The propelling pressure and the hole milling pressure belong to parameters of a drill bit in a downward drilling stage, although the propelling pressure and the hole milling pressure do not belong to monitoring amount of a rotary jetting stage, the downward drilling process is used for laying a foundation for rotary jetting operation in a lifting stage, so that an operator can judge the hardness condition of a lower stratum in the drilling process by detecting the two pressure parameters, and corresponding adjustment can be properly made according to the condition in the drilling process.
(7) And (3) detecting the mud pressure:
the grouting parameter detection module 6 comprises a mud pressure sensor 61 for detecting the pressure at the mud inlet of the rotary jet flow divider so as to ensure the diameter of the rotary jet pile.
(8) And (3) detecting high-pressure water pressure:
the grouting parameter detection module 6 may further include a water pressure sensor 62 for detecting the pressure at the high-pressure water inlet of the jet grouting diverter to ensure the diameter of the jet grouting pile.
(9) And (3) air pressure detection:
the grouting parameter detection module 6 may further include an air pressure sensor 63 for detecting the pressure at the compressed air inlet of the jet grouting diverter to ensure the diameter of the jet grouting pile.
(10) Detecting the flow of the slurry:
the grouting parameter detection module 6 may further include a mud flow detection unit to ensure the strength of the jet grouting pile. The mud flow detection unit comprises a wireless communication unit 7 and a mud pump proximity sensor 64, wherein the mud pump proximity sensor 64 is used for detecting the pumping frequency of the mud pump and sending the pumping frequency to the data processing module 4 through the wireless communication unit 7 so as to indirectly obtain the instantaneous flow of mud. The wireless communication unit 7 may include a wireless transmitting module disposed in the proximity sensor 64 and a wireless receiving module disposed in the data processing module 4, and is configured to send background equipment data to a foreground host during the high-pressure jet grouting construction process.
For example, the mud pump is a plunger pump, and the mud pump proximity sensor is provided at a position where the displacement of the plunger is maximum, and can detect the number of times the plunger moves back and forth per unit time. The mud pump has the advantages that the mud pump is large in pumping pressure, large in flow and serious in pollution, can be used in occasions with high pressure and large flow in a mode of measuring frequency by the proximity sensor, is not influenced by the cleanliness of pumped fluid, and is suitable for occasions of high-pressure rotary spraying operation. The mode of measuring the flow through the flow sensor in the prior art is suitable for low-pressure and small-flow occasions, and the cleanliness of the fluid needing to be pumped is higher so as to avoid the blockage of the flow sensor.
According to the pumping principle of the plunger pump, the following can be known:
the flow rate is equal to the area of the plunger x the stroke of the plunger x the number of plungers x the pumping frequency x the efficiency, and the formula can be expressed as follows: q is sxl × N × η, and for the known high-pressure mud pump, S, L, N and η are fixed values, so the pumping times N per minute of the plunger are measured, and the mud pump flow rate Q per minute is obtained. At the same time, the traffic data is transmitted to the data processing module 4 by means of the wireless communication unit 7.
(11) Detecting high-pressure water flow:
the grouting parameter detection module 6 may further include a water flow detection unit to ensure the strength of the jet grouting pile. The water flow detection unit comprises a wireless communication unit 7 and a water pump proximity sensor 65, the water pump proximity sensor is used for detecting the pumping frequency of the water pump and sending the pumping frequency to the data processing module 4 through the wireless communication unit 7 so as to indirectly obtain the instantaneous flow of the high-pressure water, and the method for obtaining the water flow through the pumping frequency of the water pump can refer to the method for calculating the mud flow in the step (10).
(12) And (3) air flow detection:
the grouting parameter detection module 6 may further include an air flow detection unit to ensure the strength of the jet grouting pile. The air flow detection unit includes an air flow sensor 66 for detecting the flow rate at the air inlet of the jet-fuel separator.
The invention further provides a high-pressure jet grouting drilling machine which comprises the high-pressure jet grouting parameter monitoring system in the embodiment. The high-pressure jet grouting drilling machine can automatically detect the working parameters and grouting parameters of the drilling machine in real time during construction, so that the quality of a jet grouting pile can be conveniently controlled, the accuracy and efficiency of monitoring the quality of the jet grouting pile can be improved, adjustment measures can be timely taken when abnormality occurs in the construction process, and the construction quality is guaranteed.
In addition, in some major engineering projects, the national standard enforces that the rotary spraying equipment has the functions of parameter monitoring and recording, and the detection system provided by the invention can widen the engineering application range of the high-pressure rotary spraying drilling machine. In addition, some foreign projects require that the high-pressure jet grouting drilling machine is equipped with a jet grouting parameter monitoring system, and a grouting parameter report is printed after the projects are finished.
Finally, the invention also provides a high-pressure rotary jet grouting parameter monitoring method which can be based on the high-pressure rotary jet grouting parameter monitoring system of the embodiment. In one illustrative embodiment, the monitoring method comprises:
step S1, a drilling parameter detection module 5 detects drilling machine action parameters in the rotary jetting process of the high-pressure rotary jetting drilling machine, and/or a grouting parameter detection module 6 detects fluid parameters in the rotary jetting process;
and step S2, the data processing module 4 receives the detection results of the drilling parameter detection module 5 and/or the grouting parameter detection module 6, and processes the detection results to obtain a plurality of operation parameters of the high-pressure jet grouting drilling machine.
Further, after step S2, the monitoring method of the present invention further includes step S3: the display module 2 displays each operation parameter processed by the data processing module 4 and/or gives an alarm when the operation parameter exceeds the set range of the user.
When the alarm prompt is required in step S2, before step S2, the following steps may be further included: the working mode is selected through the input module 1, the safe working range of each parameter is set, and the rotary spraying information (such as water cement ratio, cement mark number, pile number, geological conditions and the like) which cannot be detected but needs to be recorded by the input system is input.
The embodiment can monitor various parameters in the high-pressure jet grouting process in real time, so that an operator can directly and timely master construction parameters, adjustment measures can be timely taken under abnormal conditions, and the engineering quality is guaranteed.
Further, after step S2, the monitoring method of the present invention further includes step S4: the storage module 3 stores each operation parameter processed by the data processing module 4. The execution sequence of steps S3 and S3 is not limited, and may be executed synchronously.
The embodiment can record and store the dynamic change of each parameter in the rotary spraying construction process, so that a construction unit can analyze relevant data in the construction process after the project is finished.
The high-pressure jet grouting parameter monitoring system and method and the high-pressure jet drilling machine provided by the invention are described in detail above. The principles and embodiments of the present invention are explained herein using specific examples, which are presented only to aid in understanding the method and its core concepts. It should be noted that, for those skilled in the art, it is possible to make various improvements and modifications to the present invention without departing from the principle of the present invention, and those improvements and modifications also fall within the scope of the claims of the present invention.
Claims (13)
1. The utility model provides a high pressure jet grouting parameter monitoring system which characterized in that includes: the drilling parameter detection module (5) is used for detecting drilling machine action parameters in the rotary jetting process of the high-pressure rotary jetting drilling machine, the grouting parameter detection module (6) is used for detecting fluid parameters in the rotary jetting process, and the data processing module (4) is used for receiving detection results of the drilling parameter detection module (5) and/or the grouting parameter detection module (6) and processing the detection results to obtain multiple operation parameters of the high-pressure rotary jetting drilling machine;
the drilling parameter detection module (5) comprises a drill bit depth detection unit, the drill bit depth detection unit comprises a stay wire length sensor (52) and a proximity switch (53) which is respectively arranged corresponding to a holder and a power head clasping mechanism, the stay wire length sensor (52) is used for detecting the movement displacement of the power head, and the data processing module (4) can accumulate the effective displacement of the power head in the movement process to obtain the depth position of the drill bit when the proximity switch (53) detects that the power head clasping mechanism clasps a drill rod and the holder is released;
under the drilling working condition, the data processing module (4) is used for taking the accumulated effective displacement in the propelling process of the power head as the depth of the drill bit; when the target drilling depth is large and a rod needs to be added, the power head is reversely screwed and moves upwards to enable the elevator to loosen the drill rod, and the propelling or lifting displacement of the power head is defined as invalid displacement in the process of adding the new drill rod between the original drill rod and the elevator; the auxiliary arm is arranged on the mast, if the length of the drill rod can meet the requirement of a target drilling depth and no additional rod is needed, the power head is propelled to the bottommost part of the travel and clamps the drill rod by using the clamp, the power head is loosened to lift the drill rod to a proper position in an idle-load manner and clamps the drill rod again, the clamp is loosened to propel the drill rod with a larger depth, and the displacement of the drill rod which is not tightly held by the power head is defined as invalid displacement in the idle-load lifting process of the power head;
under the condition of rotary jet lifting, the data processing module (4) is used for subtracting the accumulated effective displacement in the rotary jet lifting process of the power head from the drilling total depth of the drill bit as the depth position of the drill bit; when the drill bit is gradually lifted upwards and needs to be dismounted, the clamp holder clamps the lower drill rod and enables the lower drill rod to move upwards through reverse screwing of the power head so as to dismount the drill rod, and the displacement pushed or lifted by the power head is defined as invalid displacement; under the condition that the rod is not required to be unloaded, when the power head is lifted to the top of the stroke, the clamp holder clamps the drill rod and enables the power head to release the drill rod for no-load propulsion, and the displacement of the power head not tightly holding the drill rod in the no-load propulsion process is defined as invalid displacement;
the drilling parameter detection module (5) further comprises a drill bit rotating speed detection unit, the drill bit rotating speed detection unit comprises a proximity switch (53) and a speed measurement fluted disc detachably nested at the rotating position of the power head, and the proximity switch (53) can detect the rotating number of teeth of the speed measurement fluted disc to obtain the rotating speed of the drill bit.
2. The high-pressure jet grouting parameter monitoring system according to claim 1, further comprising a display module (2) for displaying each operation parameter processed by the data processing module (4) and/or giving an alarm when the operation parameter exceeds a user setting range.
3. The high-pressure jet grouting parameter monitoring system according to claim 1, further comprising a storage module (3) for storing each operation parameter processed by the data processing module (4).
4. The high-pressure jet grouting parameter monitoring system as claimed in claim 1, characterized in that the drilling parameter detection module (5) comprises a drilling inclination angle detection unit, and the drilling inclination angle detection unit comprises an inclination angle sensor (51) arranged in the middle of the mast and used for detecting the inclination angle of the drill rod relative to the vertical direction during operation.
5. The high-pressure jet grouting parameter monitoring system as claimed in claim 1, wherein the drilling parameter detection module (5) comprises a lifting/propelling speed detection unit, the lifting/propelling speed detection unit comprises a pull-wire length sensor (52), a main body part of the pull-wire length sensor (52) is arranged above the highest point of the power head stroke at the top of the mast, and the pull rope is fixed on the power head bracket and used for obtaining the lifting/propelling speed by measuring the displacement of the pull rope when the power head is lifted/propelled.
6. The high-pressure jet grouting parameter monitoring system as claimed in claim 1, wherein the drilling parameter detection module (5) comprises a propulsion pressure sensor (54) for detecting a propulsion motor oil circuit pressure.
7. The high-pressure jet grouting parameter monitoring system as claimed in claim 1, wherein the drilling parameter detection module (5) comprises a hole milling pressure sensor (55) for detecting the pressure of an oil inlet circuit of the rotary motor.
8. The high-pressure jet grouting parameter monitoring system according to claim 1, wherein the grouting parameter detection module (6) comprises a mud pressure sensor (61) for detecting the pressure at the mud inlet of the jet grouting flow divider;
the grouting parameter detection module (6) comprises a water pressure sensor (62) for detecting the pressure at the high-pressure water inlet of the jet grouting flow divider; and/or
The grouting parameter detection module (6) comprises an air pressure sensor (63) for detecting the pressure at the compressed air inlet of the jet grouting flow divider.
9. The high-pressure jet grouting parameter monitoring system according to claim 1, wherein the grouting parameter detection module (6) comprises a mud flow detection unit, the mud flow detection unit comprises a wireless communication unit (7) and a mud pump proximity sensor, and the mud pump proximity sensor (64) is used for detecting the pumping frequency of a mud pump and sending the pumping frequency to the data processing module (4) through the wireless communication unit (7) so as to indirectly obtain the mud flow;
the grouting parameter detection module (6) comprises a water flow detection unit, the water flow detection unit comprises a wireless communication unit (7) and a water pump proximity sensor (65), and the water pump proximity sensor is used for detecting the pumping frequency of the water pump and sending the pumping frequency to the data processing module (4) through the wireless communication unit (7) so as to indirectly obtain water flow; and/or
The grouting parameter detection module (6) comprises an air flow detection unit, and the air flow detection unit comprises an air flow sensor (66) for detecting the flow at the air inlet of the rotary jet flow divider.
10. A high-pressure jet grouting drilling machine is characterized by comprising the high-pressure jet grouting parameter monitoring system as claimed in any one of claims 1 to 9.
11. A high-pressure rotary jet grouting parameter monitoring method based on the high-pressure rotary jet grouting parameter monitoring system as claimed in any one of claims 1 to 9, is characterized by comprising the following steps:
a drilling parameter detection module (5) detects drilling machine action parameters in the rotary jetting process of the high-pressure rotary jetting drilling machine, and a grouting parameter detection module (6) detects fluid parameters in the rotary jetting process;
and the data processing module (4) receives the detection results of the drilling parameter detection module (5) and the grouting parameter detection module (6) and processes the detection results to obtain a plurality of operation parameters.
12. The method for monitoring the parameters of the high-pressure jet grouting according to claim 11, further comprising the following steps: the display module (2) displays each operation parameter processed by the data processing module (4) and/or gives an alarm when the operation parameter exceeds a user setting range.
13. The method for monitoring the parameters of the high-pressure jet grouting according to claim 11, further comprising the following steps: and the storage module (3) stores each operation parameter processed by the data processing module (4).
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| CN110144889A (en) * | 2018-02-12 | 2019-08-20 | 上海建工二建集团有限公司 | Pile-forming equipment and tilt angle adjusting method |
| EP3569769B1 (en) | 2018-05-18 | 2021-08-11 | BAUER Spezialtiefbau GmbH | Foundation pile |
| CN109356207A (en) * | 2018-11-03 | 2019-02-19 | 上海隧道工程有限公司 | Multifunctional high pressure jet grouting pile construction monitoring device |
| CN110411858B (en) * | 2019-06-21 | 2020-06-30 | 中国矿业大学 | Strength testing method for jet grouting reinforced coal body |
| CN111058450B (en) * | 2019-12-31 | 2022-02-11 | 江苏省无锡探矿机械总厂有限公司 | Grouting control method, device and system |
| CN111236921B (en) * | 2020-01-08 | 2023-11-07 | 中铁隧道集团二处有限公司 | Monitoring system and method for rotary jetting grouting reinforcement process |
| CN111324983B (en) * | 2020-03-26 | 2022-02-15 | 武汉大学 | Finite element-based method for evaluating influence of uncertainty of pile diameter on seepage-proofing effect |
| CN112228038B (en) * | 2020-09-29 | 2023-09-08 | 中铁大桥局集团有限公司 | Intelligent drilling and on-line detection system for large-diameter drilled pile |
| CN112900507A (en) * | 2021-01-22 | 2021-06-04 | 浙江智握领程科技股份有限公司 | High-pressure jet grouting pile online monitoring instrument and recording method thereof |
| CN114293936B (en) * | 2021-12-07 | 2023-08-25 | 中煤科工集团西安研究院有限公司 | Drilling state monitoring device and monitoring method for drilling machine |
| CN114279698A (en) * | 2021-12-30 | 2022-04-05 | 北京中岩大地科技股份有限公司 | Test method for rotary spraying effect |
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Effective date of registration: 20220712 Address after: 221004 26 Tuo Lan Shan Road, Xuzhou economic and Technological Development Zone, Jiangsu Patentee after: Jiangsu XCMG Guozhong Laboratory Technology Co.,Ltd. Address before: 221004 26 Tuo Lan Shan Road, Xuzhou economic and Technological Development Zone, Jiangsu Patentee before: XCMG CONSTRUCTION MACHINERY Co.,Ltd. |