CN115451832A - Multipoint displacement meter for measuring three-dimensional displacement in rock mass and measuring method - Google Patents
Multipoint displacement meter for measuring three-dimensional displacement in rock mass and measuring method Download PDFInfo
- Publication number
- CN115451832A CN115451832A CN202211190351.4A CN202211190351A CN115451832A CN 115451832 A CN115451832 A CN 115451832A CN 202211190351 A CN202211190351 A CN 202211190351A CN 115451832 A CN115451832 A CN 115451832A
- Authority
- CN
- China
- Prior art keywords
- measuring point
- measuring
- pointer
- vertical
- rock mass
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/02—Measuring arrangements characterised by the use of optical techniques for measuring length, width or thickness
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/16—Measuring arrangements characterised by the use of optical techniques for measuring the deformation in a solid, e.g. optical strain gauge
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Length Measuring Devices By Optical Means (AREA)
Abstract
The invention relates to a multipoint displacement meter for measuring three-dimensional displacement in a rock mass, which comprises a monitoring hole, a hole unit and an orifice unit, wherein the hole unit comprises a plurality of measuring point anchoring heads, a remote control light source, a connecting pipe, an orifice iron clamp and a steel wire pull rope; the orifice unit comprises an L-shaped stay bar, an orifice base plate, a dial, a pointer disc, a vertical fixing plate, a centering telescope assembly and a laser range finder assembly; a plurality of threaded rods are arranged on the orifice base plate in the circumferential direction, and a dial is sleeved above the plurality of threaded rods; the middle part of the vertical fixing plate is also connected with a telescope component or a laser range finder component in a pitching switching mode. The invention also relates to a measuring method of the multipoint displacement meter for measuring three-way displacement in the rock mass. The invention adopts laser ranging to replace the measurement of the length of a steel wire or a steel rod, so that the measured data is more real and accurate, all parts can be quickly disassembled and assembled, and the repeated utilization can be realized.
Description
Technical Field
The invention relates to the technical field of rock mass internal monitoring of geotechnical engineering, in particular to a multipoint displacement meter and a measuring method for measuring three-way displacement in a rock mass.
Background
Large-scale construction projects such as mining projects, hydraulic projects and traffic projects generate severe disturbance on surrounding rock masses, obvious deformation inevitably occurs in the rock masses, and serious threat is formed to engineering construction. The three-dimensional deformation rule of the rock mass inner space is mastered in time, so that the method not only can be used for guiding the field engineering construction, but also can provide data foundation and field verification for the stability evaluation of the engineering rock mass. Therefore, the monitoring of three-dimensional deformation of the internal space of the rock mass has important scientific research and engineering significance.
At present, two types of multipoint displacement meters, namely a mechanical multipoint displacement meter and a vibrating wire type multipoint displacement meter, are mainly used in engineering monitoring, wherein the mechanical multipoint displacement meter calculates the relative deformation between two measuring points in a drill hole by measuring the elongation of a steel wire or a steel rod, although the device is low in manufacturing cost, the spatial displacement of the measuring points cannot be reflected, and the measuring precision needs to be further improved.
The vibration wire type multipoint displacement meter has high measurement accuracy, but in practical application, each measurement hole needs to be specially provided with one set of vibration wire type multipoint displacement meter, the measurement equipment cannot be recycled due to a grouting anchoring mode, the construction cost of the measurement hole is multiplied along with the increase of measurement points in the hole, the cost is high, and in addition, the defect that only the axial deformation of a drill hole can be measured exists.
There are also laser multipoint displacement meters, such as the laser multipoint displacement measuring device disclosed in the publication No. CN212179816U, in which a laser distance measuring sensor is fixed at an orifice, but the laser distance measuring sensor is not related to a specific mounting structure of the laser distance measuring sensor, and after the internal space of the rock body is deformed, the reflector is located and shifted therewith, and it is not clear how to adjust the laser distance measuring sensor to measure the shifted reflector. Therefore, the invention is necessary to invent a multipoint displacement meter and a measuring method for measuring the three-dimensional displacement of the internal space of the rock mass.
Disclosure of Invention
The invention aims to solve the problems that part of multipoint displacement meters are low in measurement precision and complex in installation structure and inconvenient to recycle, and provides a multipoint displacement meter and a measurement method for measuring three-way displacement in a rock mass.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows:
a multi-point displacement meter for measuring three-way displacement in a rock mass comprises a monitoring hole, a hole unit and an orifice unit, wherein the monitoring hole, the hole unit and the orifice unit are arranged in the rock mass;
the remote control light source is arranged on the inner side of the measuring point anchoring head, and a measuring point target with a target point arranged in the middle is elastically hinged to the left end of the measuring point anchoring head; the connecting pipe comprises a first pipe with one closed end and a tail pipe with two open ends, the first pipe is sleeved on one measuring point anchoring head positioned at the bottom of the monitoring hole, and the tail pipe is sleeved between two adjacent measuring point anchoring heads;
the orifice iron clamps are pre-embedded in the monitoring hole, the steel wire pull ropes are correspondingly arranged between the orifice iron clamps and the plurality of measuring point targets one by one, and the steel wire pull ropes penetrate through the connecting pipes and are used for controlling the overturning action of the measuring point targets;
the orifice unit is arranged outside the monitoring hole and comprises an L-shaped stay bar, an orifice base plate, a dial, a pointer disc, a vertical fixing plate, a centering telescope assembly and a laser range finder assembly;
the L-shaped supporting rod is embedded in a rock body below the monitoring hole, one end of the L-shaped supporting rod is bent upwards and is in threaded connection with the hole base plate, a plurality of threaded rods with spiral hand wheels are arranged on the hole base plate in an annular mode, the dial is connected above the plurality of threaded rods in a sleeved mode, the dial is horizontally connected with the pointer disc in a switching mode above the dial, a connecting screw is further arranged between the dial and the pointer disc to fix the dial and the pointer disc is provided with leveling bubbles, and therefore the levelness of the pointer disc can be conveniently indicated;
the pointer disc one side still can dismantle and be connected with vertical layout the vertical fixation board, the vertical fixation board is the plate body structure that transparent glass board made, and vertical fixation board middle part level corresponds with the connecting pipe, and vertical fixation board middle part still every single move switching has centering telescope subassembly or laser range finder subassembly, still is provided with the vertical angle scale on the vertical fixation board in order to show turned angle.
Furthermore, the diameters of the two ends of the measuring point anchoring head are smaller than the diameter of the middle part of the measuring point anchoring head to form a stepped ring shape, so that the measuring point anchoring head and a connecting pipe can be conveniently installed;
the connecting pipe is sleeved at the end part of the measuring point anchoring head and is bonded with the measuring point anchoring head, namely, the measuring point anchoring heads are connected and sleeved through the connecting pipe matched with the size, and the connecting pipe is communicated with the measuring point anchoring heads after being connected and combined to measure a telescope assembly or a laser range finder assembly.
Furthermore, the orifice iron clamp comprises a cross-shaped suspender embedded in the monitoring hole and a plurality of iron clamps arranged below the suspender at intervals, the iron clamps correspond to the measuring point targets one by one, the steel wire pull ropes are arranged between the iron clamps and the measuring point targets to control the overturning of the measuring point targets, and the measuring point anchoring heads at different positions also cause different lengths of the steel wire pull ropes.
Furthermore, the L-shaped support rod comprises a horizontal rod and a vertical rod which are connected through a bolt, the vertical rod can deflect relative to the horizontal rod, and the vertical rod is in threaded connection with the orifice base plate, so that the orifice base plate and the orifice base plate can be conveniently disassembled and assembled;
the dial is located between a plurality of spiral hand wheels, and the calibrated scale is the disc structure, and calibrated scale circumference lateral wall is provided with horizontal angle scale, and the calibrated scale middle part is provided with horizontal rotating shaft, and the calibrated scale passes through horizontal rotating shaft rotates with the pointer dish and is connected.
Further, pointer dish, calibrated scale and drill way base plate upper and lower parallel arrangement, overlap from top to bottom pointer dish and calibrated scale, and the pointer dish also is the disc, and the pointer dish lateral wall is provided with horizontal pointer, horizontal pointer cooperation horizontal angle scale conveniently shows horizontal turned angle.
Furthermore, lower ring grooves are symmetrically formed in two sides of the dial, the lower ring grooves penetrate through the dial, upper ring grooves are symmetrically formed in two sides of the pointer disc, the upper ring grooves penetrate through the pointer disc, and the upper ring grooves and the lower ring grooves are in inferior arc shapes and correspond to each other up and down; connecting screw includes anchorage bar and locking cap, both sides all set up in the lower annular the anchorage bar, the vertical upwards extension of anchorage bar has behind the last annular threaded connection have the locking cap, be convenient for realize the fixed of pointer dish or rotate.
Furthermore, a cutting groove is formed in one side of the pointer disc, the vertical fixing plate is clamped in the cutting groove and is connected with the pointer disc through bolts, the vertical fixing plate is guaranteed to be firmly installed, a rotating hole is formed in the middle of the vertical fixing plate, the centering telescope component or the laser range finder component is rotatably connected in the rotating hole, and the vertical angle scale is distributed on the periphery of the rotating hole.
Further, the centering telescope assembly comprises a centering telescope clamping seat and a centering telescope body clamped in the centering telescope clamping seat, and the laser range finder assembly comprises a laser range finder clamping seat and a laser range finder body clamped in the laser range finder clamping seat; the structure of the centering telescope clamping seat is the same as that of the laser range finder body, the section of the centering telescope clamping seat is in a [ -shape, hand-screwed bolts are arranged on the upper side and the lower side of the centering telescope clamping seat, the head ends of the hand-screwed bolts extend into the centering telescope clamping seat and are tightly abutted against the centering telescope body to be fixed, a stepped vertical rotating shaft is arranged on the centering telescope clamping seat, and the vertical rotating shaft penetrates through the rotating hole and is in threaded connection with a nut; and a vertical pointer is further arranged on the vertical rotating shaft and is matched with a vertical angle scale, so that the pitching rotation angle can be conveniently displayed.
A measuring method of a multipoint displacement meter for measuring three-way displacement in a rock mass is based on the multipoint displacement meter for measuring three-way displacement in the rock mass and comprises the following steps:
step 1, equipment assembly:
step 1.1, assembling units in the hole: one end of each measuring point anchoring head is elastically hinged with a measuring point target, and the measuring point target is connected with a steel wire pull rope; sequentially bonding each measuring point anchoring head through a connecting pipe, and enabling one end of a steel wire pull rope to penetrate out along the inside of the connecting pipe; respectively tensioning the steel wire pull ropes, cutting off the steel wire pull ropes at a position exceeding the pipe orifice of the connecting pipe by a certain distance, and marking numbers on the end parts of the steel wire pull ropes extending out of the connecting pipe;
then inserting the assembled measuring point anchoring head and the connecting pipe into the monitoring hole, grouting and anchoring the connecting pipe and the rock wall of the monitoring hole, and finally fixing the end part of each steel wire rope on an iron clamp of the rock wall of the hole opening respectively, wherein the measuring point target is in a horizontal turning open state;
step 1.2, assembling an orifice unit: an orifice base plate is installed at the upper end of the L-shaped stay bar, then a dial and a pointer disc are installed on the orifice base plate, a plurality of spiral hand wheels are adjusted, leveling bubbles are observed at the same time, so that the upper surface of the pointer disc is in a horizontal state, the pointer disc is rotated, so that a horizontal pointer is aligned to the 0-scale position of a horizontal angle scale, at the moment, a cutting groove in the upper surface of the pointer disc is in a parallel state with the axis of a monitoring hole, and a fastening cap is screwed, and the relative positions of the dial and the pointer disc are fixed;
the vertical fixing plate is arranged in the cutting groove and is fixed by adopting a bolt; installing a centering telescope body in the centering telescope clamping seat for fixing, inserting a vertical rotating shaft of the centering telescope clamping seat into the rotating hole, rotating the centering telescope body to enable a vertical pointer to point to the position of 0 degree of a vertical angle scale, and screwing a screw cap to enable a centering telescope component to keep a fixed state;
step 2.1, measuring rock mass three-dimensional data corresponding to the installed side point anchoring head: opening a remote control light source in one measuring point anchoring head, and pulling a corresponding steel wire pull rope to enable a measuring point target on the measuring point anchoring head to be in a vertical turning closed state; adjusting the focal length of a centering telescope body to enable a measuring point target to clearly image, loosening a fastening cap and a nut, enabling a reticle cross wire in the centering telescope body to align a target point of the measuring point target by a horizontal rotating pointer plate and a vertical rotating centering telescope component, screwing the fastening cap and the nut again, and recording a horizontal angle scale reading alpha 1 and a vertical angle scale reading alpha 2 corresponding to a horizontal pointer and a vertical pointer at the moment;
the centering telescope component is disassembled, the laser range finder component is installed on the vertical fixing plate, and the distance of the measuring point target in the step 2.1 is measured: rotating the pointer disc and the laser range finder assembly to enable the horizontal pointer and the vertical pointer to point to the positions of the horizontal angle scale alpha 1 and the vertical angle scale alpha 2; opening a switch of the laser range finder body, wherein a light path emitted by the laser range finder body is just aligned with the target position of the measuring point target, and reading the distance d1 from the laser range finder body to the measuring point target;
step 2.2, measuring rock mass three-way data corresponding to the offset of one side point anchoring head: after the rock mass in the monitoring hole is deformed, repeating the step 2.1, reading the reading alpha 1' and the vertical angle scale alpha 2' of the horizontal angle scale where the measuring point anchoring head is located, and reading the distance d1' from the laser range finder body to the measuring point target on the measuring point anchoring head;
then the displacement in the vertical rock wall direction corresponding to the measuring point anchoring head is delta y = d1'cos alpha 2' cos alpha 1'-d1 cos alpha 2 cos alpha 1, the displacement in the horizontal direction of the parallel rock wall is delta x = d1' cos alpha 2 'sin alpha 1' -d1 cos alpha 2 sin alpha 1, and the displacement in the vertical direction is delta z = d1'sin alpha 2' -d1 sin alpha 2 sin alpha 1, so that the rock mass three-way displacement data corresponding to the measuring point anchoring head is obtained;
Through the technical scheme, the invention has the beneficial effects that:
according to the invention, the laser ranging is used for replacing the measurement work of the length of the steel wire or the steel rod, so that the human error caused by reading is avoided, and the laser ranging has the characteristic of high precision, so that the measured data is more real and accurate.
The invention can obtain the space three-dimensional displacement of each measuring point in the monitoring hole by measuring the axial length change and the axial horizontal and vertical corner change of the monitoring hole. In addition, compared with other types of multipoint displacement meters, the orifice base plate, the dial, the pointer disc, the centering telescope component and the laser range finder component in the device can be rapidly disassembled and assembled, repeated utilization among a plurality of monitoring holes is facilitated, and implementation cost of a porous monitoring scheme is greatly reduced. Meanwhile, all parts of the orifice unit are flexibly installed and adjusted, instruments are convenient to replace, and measurement operation can be conveniently carried out.
The invention relates to a laser type multipoint displacement meter, which can be used for replacing a centering telescope body by a laser range finder body arranged on a same outer size clamping seat after adjusting the direction of the centering telescope body to enable a reticle cross wire to be aligned with a target point of a measuring point target, so that the light path of the laser range finder body just passes through the target point of the measuring point target, and can calculate the three-way displacement of each anchoring head measuring point in a rock mass through measuring the distance from the measuring point target to the laser range finder body, the horizontal rotation angle of a pointer plate and the vertical rotation angle of a laser range finder component twice before and after the rock mass deforms.
Drawings
Fig. 1 is a schematic diagram of the overall structure of a multipoint displacement meter for measuring three-way displacement in a rock mass.
Fig. 2 is a schematic diagram of an in-hole unit of the multipoint displacement meter for measuring three-way displacement in a rock body.
FIG. 3 is a schematic view of a measuring point anchoring head of the multipoint displacement meter for measuring three-way displacement in a rock mass.
Fig. 4 is a schematic view of an orifice unit of the multipoint displacement meter for measuring three-way displacement in the rock mass of the present invention.
Fig. 5 is a schematic diagram of an L-shaped brace rod of the multi-point displacement meter for measuring three-way displacement in a rock mass.
Fig. 6 is a schematic view of an orifice base plate of the multipoint displacement meter for measuring three-way displacement in a rock mass.
FIG. 7 is a schematic view showing the vertical separation of the dial and the pointer plate of the multipoint displacement meter for measuring the three-way displacement in the rock mass.
Fig. 8 is a front view of a vertical fixing plate of the multipoint displacement meter for measuring three-way displacement in a rock mass.
Fig. 9 is a rear view of a vertical fixing plate of the multipoint displacement meter for measuring three-way displacement in a rock mass according to the invention.
FIG. 10 is a schematic diagram showing the disassembly of a centering telescope assembly of the multipoint displacement meter for measuring the three-way displacement in the rock mass.
FIG. 11 is a schematic diagram of the assembly disassembly of the laser range finder of the multipoint displacement meter for measuring the three-way displacement in the rock mass.
Fig. 12 is a data table pattern diagram of the measuring method of the multipoint displacement meter for measuring the three-way displacement in the rock mass.
The reference numbers in the drawings are as follows: 1 monitoring hole, 2 measuring point anchoring heads, 3 remote control light sources, 4 connecting pipes, 41 head pipes, 42 tail pipes, 5 orifice iron clamps, 6 steel wire pull ropes, 7 measuring point targets, 8 target points, 9L-shaped supporting rods, 91 horizontal rods, 92 vertical rods, 10 orifice base plates, 11 graduated disks, 12 pointer disks, 13 vertical fixing plates, 14 centering telescope components, 141 centering telescope clamping seats, 142 centering telescope bodies, 15 laser range finder components, 151 laser range finder clamping seats, 152 laser range finder bodies, 16 spiral hand wheels, 17 threaded rods, 18 horizontal angle scales, 19 horizontal rotating shafts, 20 horizontal pointers, 21 leveling bubbles, 22 connecting screw rods, 221 fastening rods, 222 fastening caps, 23 lower annular grooves, 24 upper annular grooves, 25 vertical pointers, 26 triangular blocks, 27 vertical angle scales, 28 hand-screwed bolts, 29 rotating holes, 30 vertical rotating shafts, 31 nuts and 32 cutting grooves.
Detailed Description
The following detailed description of embodiments of the invention refers to the accompanying drawings in which:
as shown in figures 1-11, the multi-point displacement meter for measuring three-way displacement in the rock comprises a monitoring hole 1, an in-hole unit and an orifice unit, wherein the monitoring hole, the in-hole unit and the orifice unit are arranged in the rock, and the in-hole unit and the orifice unit are matched with each other to further carry out multi-point three-way displacement measurement operation.
An in-hole unit is arranged in the monitoring hole 1, namely the in-hole unit is arranged in the monitoring hole 1. The in-hole unit comprises three measuring point anchoring heads 2 with a ring body structure, a remote control light source 3, a connecting pipe 4, an orifice iron clamp 5 and a steel wire pull rope 6, as shown in figure 2. The diameter of the two ends of the measuring point anchoring head 2 is smaller than that of the middle part of the measuring point anchoring head to form a step ring shape, so that the two ends of the measuring point anchoring head 2 are convenient to install with the connecting pipe 4, and the inner diameters of the measuring point anchoring head 2 are consistent, as shown in figure 3.
The remote control light source 3 is arranged on the inner side of the measuring point anchoring head 2, the measuring point target 7 with the middle part provided with a target point 8 is elastically hinged to the left end of the measuring point anchoring head 2, and specifically, the remote control light source 3 and the measuring point target 7 are respectively arranged at two ends of the measuring point anchoring head 2.
The measuring point target 7 is a circular plate, the measuring point target 7 can turn over relative to the measuring point anchoring head 2, the left end of the measuring point anchoring head 2 is opened after the measuring point target 7 turns over horizontally, and the left end of the measuring point anchoring head 2 is closed after the measuring point target 7 turns over vertically. The target point 8 in the middle of the measuring point target 7 is in a circular hole shape, the diameter of the measuring point target 7 is matched with the inner diameter of the measuring point anchoring head 2, and the installation of the connecting pipe 4 is not influenced.
The connecting pipe 4 plays a role in connecting the three measuring point anchoring heads 2 together, the connecting pipe 4 is made of a plastic sleeve, and the inner diameter of the connecting pipe 4 is matched with the outer diameter of the end part of each measuring point anchoring head 2. The connection comprises a head pipe 41 with one closed end and a tail pipe 42 with two open ends, the number of the head pipes 41 is one, the front end of the head pipe 41 is conical, and the head pipe 41 is sleeved at the end part of a measuring point anchoring head 2 positioned at the bottom of a hole of the monitoring hole 1; the number of the tail pipes 42 is three, the tail pipes 42 are of a straight pipe structure, the tail pipes 42 are sleeved between two adjacent measuring point anchoring heads 2, and the tail pipe 42 is sleeved at the end part of one measuring point anchoring head 2 positioned in the hole of the monitoring hole 1.
The connecting pipe 4 and the measuring point anchoring head 2 are sleeved and mounted, and a bonding mode is adopted, so that firm mounting is ensured, namely the connecting pipe 4 is sleeved at the end part of the measuring point anchoring head 2 and is bonded with the measuring point anchoring head 2. The connecting pipe 4 and the three measuring point anchoring heads 2 are connected and combined to be communicated with each other, namely the inside of the measuring point anchoring heads 2 is communicated with the inside of the connecting pipe 4.
An orifice iron clamp 5 is pre-buried in the rock mass of the orifice of the monitoring hole 1, and the orifice iron clamp 5 is used for controlling a steel wire pull rope 6. The orifice iron clamp 5 comprises a 'line-shaped' suspender embedded in the rock body of the monitoring hole 1 and three iron clamps arranged below the suspender at intervals, the iron clamps correspond to the measuring point targets 7 one by one, and the iron clamps are used for clamping or releasing the steel wire pull ropes 6.
Steel wire pull ropes 6 are correspondingly arranged between the orifice iron clamps 5 and the three measuring point targets 7 one by one, namely the number of the steel wire pull ropes 6 is three; because the depths of the three measuring point targets 7 in the monitoring holes 1 are different, the lengths of the three steel wire pull ropes 6 are different.
The steel wire stay cord 6 is arranged in the connecting pipe 4 in a penetrating mode, the steel wire stay cord 6 is arranged between the iron clamp and the measuring point target 7 to control the measuring point target 7 to overturn, namely one end of the steel wire stay cord 6 is connected and stretched into the connecting pipe 4 to be connected with the measuring point target 7, and the other end of the steel wire stay cord 6 stretches out of the connecting pipe 4 to be connected with the iron clamp.
In the initial state, the side point target is in a horizontal opening state, and the steel wire pull rope 6 is pulled outwards to enable the side point target to be vertically turned over and closed. When the iron clamp does not clamp the steel wire pull rope 6 any more, the measuring point target 7 tends to restore to the initial horizontal state, and the steel wire pull rope 6 is driven to move towards the monitoring hole 1; when the steel wire pull rope 6 is clamped by the iron clamp, the measuring point target 7 corresponding to the steel wire pull rope 6 is fixed in a turnover state.
A hole unit is arranged outside the monitoring hole 1, namely the hole unit is arranged outside the monitoring hole 1. The orifice unit includes an L-shaped stay 9, an orifice base plate 10, a dial 11, a pointer dial 12, a vertical fixing plate 13, a centering telescope assembly 14, and a laser range finder assembly 15, as shown in fig. 4.
L type vaulting pole 9 is pre-buried in the rock mass of monitoring hole 1 below, and L type vaulting pole 9 includes bolted connection's horizontal pole 91 and vertical pole 92, as shown in figure 5, and horizontal pole 91 is pre-buried in the rock mass. One end of the L-shaped stay 9 is bent upwards to connect the orifice substrate 10 with the screw thread, i.e. the vertical rod 92 is connected with the orifice substrate 10 with the screw thread.
The orifice base plate 10 is a disc structure, three threaded rods 17 with spiral hand wheels 16 are circumferentially arranged on the orifice base plate 10, that is, the three threaded rods 17 are arranged above the orifice base plate 10, and each threaded rod 17 is in threaded connection with a spiral hand wheel 16, as shown in fig. 6.
The dial 11 is sleeved above the three threaded rods 17, namely the upper ends of the threaded rods 17 extend into the lower portion of the dial 11, the dial 11 is of a disc structure, the dial 11 is located between the three spiral hand wheels 16, the three spiral hand wheels 16 support the dial 11, meanwhile, the dial 11 can be leveled, and the dial 11 cannot rotate horizontally.
The dial 11 is a disc with scales, and specifically, a horizontal angle scale 18 is arranged on the circumferential side wall of the dial 11. Pointer disc 12 is horizontally switched above dial 11, specifically, a horizontal rotating shaft 19 is arranged in the middle of the upper portion of dial 11, and dial 11 is rotatably connected with pointer disc 12 through horizontal rotating shaft 19.
In order to realize the relative fixation of the dial plate 12 and the dial plate 11, a connecting screw rod is further arranged between the dial plate 11 and the dial plate 12 for fixation, and the connecting screw rod comprises a fastening rod 221 and a fastening cap 222. Specifically, lower ring grooves 23 are symmetrically formed in two sides of the dial 11, and the lower ring grooves 23 penetrate through the dial 11; upper ring grooves 24 are symmetrically formed in two sides of the pointer disc 12, the upper ring grooves 24 penetrate through the pointer disc 12, and the upper ring grooves 24 and the lower ring grooves 23 are in inferior arc shapes and correspond to each other up and down. Fastening rods 221 are arranged in the lower annular grooves 23 on two sides, the fastening rods 221 vertically extend upwards through the upper annular grooves 24 and then are in threaded connection with fastening caps 222, after the fastening caps 222 are screwed, the pointer disc 12 and the dial disc 11 are relatively fixed and cannot rotate, and once the fastening caps 222 are loosened, the pointer disc 12 can be rotated again.
A vertically arranged vertical fixing plate 13 can be detachably connected to one side of the pointer disc 12, and the vertical fixing plate 13 is a plate body structure made of a transparent glass plate, as shown in fig. 8 to 9. In order to facilitate the installation of the vertical fixing plate 13, a slot 32 is formed on one side of the pointer dial 12, and the vertical fixing plate 13 is arranged in the slot 32.
Meanwhile, the vertical fixing plate 13 is connected with the pointer disc 12 through bolts, specifically, a triangular block 26 is arranged in the middle of the bottom surface of the vertical fixing plate 13, the triangular block 26 is clamped into the cutting groove 32, a bolt is further arranged on the triangular block 26, and the bolt is screwed into the pointer disc 12 to realize fixation of the vertical fixing plate 13 after clamping.
The middle part level of the vertical fixing plate 13 after installation corresponds to the connecting pipe 4, the middle part of the vertical fixing plate 13 is also connected with a centering telescope component 14 or a laser range finder component 15 in a pitching and rotating mode, namely, the centering telescope component 14 and the laser range finder component 15 are both rotatably installed with the vertical fixing plate 13, but the centering telescope component 14 and the laser range finder component 15 are not installed with the vertical fixing plate 13 at the same time. The centering telescope component 14 and the laser range finder component 15 can rotate relative to the vertical fixing plate 13 by a pitch angle, and meanwhile, a vertical angle scale 27 is arranged on the vertical fixing plate 13 and used for displaying a pitch rotation angle.
The centering telescope assembly 14 includes a centering telescope holder 141 and a centering telescope body 142 clamped in the centering telescope holder 141, as shown in fig. 10; the laser range finder assembly 15 includes a laser range finder holder 151 and a laser range finder body 152 that is clamped in the laser range finder holder 151, as shown in fig. 11.
The structure of the centering telescope clamping seat 141 is the same as that of the laser range finder body 152, the cross section of the centering telescope clamping seat 141 is in a [ -shape, hand-screwed bolts 28 are arranged on the upper side and the lower side of the centering telescope clamping seat 141, the head ends of the hand-screwed bolts 28 extend into the centering telescope clamping seat 141 and are tightly abutted to the centering telescope body 142 to be fixed, and namely, the two hand-screwed bolts 28 clamp to be fixed.
In order to realize the rotating installation of the centering telescope component 14 and the vertical fixing plate 13, the middle part of the vertical fixing plate 13 is provided with a rotating hole 29, the centering telescope component 14 or the laser range finder component 15 is rotatably connected in the rotating hole 29, and a vertical angle scale 27 is distributed on the periphery of the rotating hole 29. The centering telescope clamping seat 141 is provided with a stepped vertical rotating shaft 30, the vertical rotating shaft 30 is in threaded connection with a nut 31 through a rotating hole 29, and whether the centering telescope component 14 or the laser range finder component 15 can rotate or not can be controlled by screwing or not of the nut 31.
In order to visually display the tilt angle of the centering telescope unit 14 or the laser range finder unit 15, a vertical pointer 25 is further provided on the vertical shaft 30, and the tilt angle of the centering telescope unit 14 or the laser range finder unit 15 can be displayed by the vertical pointer 25 in cooperation with the vertical angle scale 27.
The principle of the invention is as follows: connecting the measuring point anchoring heads 2 in the monitoring holes 1 and the connecting pipes 4 into a group, inserting the group into the monitoring holes 1, and then grouting and fixing; an L-shaped stay bar 9 is embedded at the lower side close to the orifice, and a dial 11 and a pointer disc 12 are installed on an orifice base plate 10 and are adjusted to be in a horizontal state; the vertical fixing plate 13 is vertically inserted into the cut-out 32, and then the mounting centering telescope assembly 14 is fixed to the vertical fixing plate 13. And (3) opening the remote control light source 3 on the anchoring head to be tested, pulling the steel wire pull rope 6 to enable the target 7 to be tested to keep a vertical state, and fixing the orifice end of the steel wire pull rope 6 at the orifice iron clamp 5. And adjusting the focal length of the centering telescope body 142 to enable the measuring point target 7 to clearly image, marking the target point 8 of the reticle cross wire of the centering telescope body 142 aligned with the measuring point target 7 by adjusting the horizontal rotation angle of the pointer plate 12 and the vertical rotation angle of the centering telescope component 14, and recording the reading of the horizontal angle scale 18 and the vertical angle scale 27. And (3) taking down the centering telescope component 14, replacing with the laser range finder component 15, setting the same horizontal angle and vertical angle, enabling the laser emitted by the laser range finder body 152 to be just aligned with the target point 8 of the measuring point target 7, opening a switch of the laser range finder body 152, and measuring the distance from the orifice to the measuring point target 7. After the rock mass is deformed, the measurement is repeated, the distance measurement of the measuring point target 7 in the two previous and next measurements and the reading of the horizontal and vertical angle scale 27 are compared, and the spatial three-dimensional displacement of the measuring point target 7 to be measured is obtained according to a polar coordinate and rectangular coordinate conversion formula.
A measuring method of a multipoint displacement meter for measuring three-way displacement in a rock mass comprises the following steps:
step 1, equipment assembly: after the monitoring hole 1 is formed, the assembly of the in-hole unit and the assembly of the orifice unit are carried out.
Step 1.1, assembling units in the hole: one end of each of the three measuring point anchoring heads 2 is elastically hinged with a measuring point target 7, and the edge of the measuring point target 7 is connected with a steel wire pull rope 6; sequentially bonding three measuring point anchoring heads 2 through a connecting pipe 4, and enabling one end of a steel wire pull rope 6 to penetrate out along the inside of the connecting pipe 4; the steel wire pull ropes 6 are respectively tensioned, the steel wire pull ropes 6 are cut off at positions which exceed the pipe openings of the connecting pipes 4 by a certain distance, and the end parts of each steel wire pull rope 6 extending out of the connecting pipes 4 are marked with numbers and respectively correspond to three measuring point targets 7;
and then, the assembled measuring point anchoring heads 2 and the connecting pipes 4 are inserted into the monitoring holes 1 together, grouting is carried out between the connecting pipes 4 and the rock walls of the monitoring holes 1 for anchoring, so that the measuring point anchoring heads 2 are embedded into slurry and can move and deform along with the rock mass around the monitoring holes 1, finally, the end parts of the steel wire pull ropes 6 are respectively fixed on iron clamps of the rock walls of the holes, and the measuring point target 7 is in a horizontal turning open state.
Step 1.2, assembling an orifice unit: an orifice base plate 10 is arranged at the upper end of an L-shaped stay bar 9, then a dial 11 is arranged on the orifice base plate 10, a pointer disc 12 is rotatably arranged on the dial 11, and a plurality of spiral hand wheels 16 are adjusted to enable the upper surface of the pointer disc 12 to be in a horizontal state; rotating the pointer disc 12 to make the horizontal pointer 20 align with the 0 scale position of the horizontal angle scale 18, at this time, the cutting groove 32 on the upper surface of the pointer disc 12 is parallel to the axis of the monitoring hole 1, screwing the fastening cap 222 to further fix the relative position of the dial 11 and the pointer disc 12, so that the pointer disc 12 cannot rotate;
the vertical fixing plate 13 is arranged in the cutting groove 32 and fixed by adopting a bolt; the centering telescope body 142 is fixed in the centering telescope clamping seat 141, the vertical rotating shaft 30 of the centering telescope clamping seat 141 is inserted into the rotating hole 29, the centering telescope body 142 is rotated to enable the vertical pointer 25 to point to the 0-degree position of the vertical angle scale 27, and the nut 31 is screwed to enable the centering telescope component 14 to keep a fixed and non-rotatable state.
Step 2.1, measuring rock mass three-dimensional data corresponding to the installed side point anchoring head: opening the remote control light source 3 in one measuring point anchoring head 2, closing the other two remote control light sources 3, pulling the corresponding steel wire pull rope 6 to enable the measuring point target 7 of the measuring point anchoring head 2 to be in a vertically-turned closed state, clamping the steel wire pull rope 6 by using an iron clamp to enable the measuring point target 7 to be in a fixed state, and enabling the other steel wire pull ropes 6 to be immobile; adjusting the focal length of the centering telescope body 142 to enable the measuring point target 7 to clearly image, loosening the fastening cap 222 and the screw cap 31, enabling the cross wire of the dividing plate in the centering telescope body 142 to be aligned with the target point 8 of the measuring point target 7 through horizontally rotating the pointer disc 12 and vertically rotating the centering telescope component 14, screwing the fastening cap 222 and the screw cap 31 again, and recording the reading alpha 1 of the horizontal angle scale 18 and the reading alpha 2 of the vertical angle scale 27 corresponding to the horizontal pointer 20 and the vertical pointer 25 at the moment;
the centering telescope component 14 is detached, the laser range finder component 15 is installed on the vertical fixing plate 13, and the distance of the point target 7 in the step 2.1 is measured: rotating the pointer plate 12 and the laser range finder assembly 15 respectively so that the horizontal pointer 20 and the vertical pointer 25 point to the positions of the horizontal angle scale 18 α 1 and the vertical angle scale 27 α 2; and (3) opening a switch of the laser range finder body 152, wherein the light path emitted by the laser range finder body 152 is just aligned with the position of the target point 8 of the measuring point target 7, and reading the distance d1 from the laser range finder body 152 to the measuring point target 7.
Step 2.2, measuring rock mass three-way data corresponding to the offset of one side point anchoring head: after the rock mass in the monitoring hole 1 is deformed, the side point anchoring head deviates along with the deformation; repeating the step 2.1, reading the reading alpha 1' of the horizontal angle scale 18 and the reading alpha 2' of the vertical angle scale 27 where the measuring point anchoring head 2 is located, and reading the distance d1' from the laser range finder body 152 to the measuring point target 7 on the measuring point anchoring head 2;
then the displacement in the vertical rock wall direction corresponding to the measuring point anchoring head 2 is Δ y = d1'cos α 2' cos α 1'-d1 cos α 2 cos α 1, the displacement in the horizontal direction of the parallel rock wall is Δ x = d1' cos α 2 'sin α 1' -d1 cos α 2 sin α 1, and the displacement in the vertical rock wall direction is Δ z = d1'sin α 2' -d1 sin α 2 sin α 1, so that the rock mass three-way displacement data corresponding to one measuring point anchoring head 2 is obtained.
The above-described embodiments are merely preferred embodiments of the present invention, and not intended to limit the scope of the invention, so that equivalent changes or modifications in the structure, features and principles described in the present invention should be included in the claims of the present invention.
Claims (9)
1. A multipoint displacement meter for measuring three-way displacement in a rock mass comprises a monitoring hole (1) formed in the rock mass, a hole unit and an orifice unit, and is characterized in that the hole unit is arranged in the monitoring hole (1), and comprises a plurality of measuring point anchoring heads (2) of a torus structure, a remote control light source (3), a connecting pipe (4), an orifice iron clamp (5) and a steel wire pull rope (6);
the remote control light source (3) is arranged on the inner side of the measuring point anchoring head (2), and a measuring point target (7) with a target point (8) arranged in the middle is elastically hinged to the left end of the measuring point anchoring head (2); the connecting pipe (4) comprises a head pipe (41) with one closed end and a tail pipe (42) with two open ends, the head pipe (41) is sleeved on one measuring point anchoring head (2) positioned at the hole bottom of the monitoring hole (1), and the tail pipe (42) is sleeved between two adjacent measuring point anchoring heads (2);
the orifice iron clamps (5) are pre-buried in the orifices of the monitoring holes (1), the steel wire pull ropes (6) are correspondingly arranged between the orifice iron clamps (5) and the measuring point targets (7) one by one, and the steel wire pull ropes (6) are arranged in the connecting pipes (4) in a penetrating manner;
the monitoring hole (1) is externally provided with the orifice unit, and the orifice unit comprises an L-shaped stay bar (9), an orifice base plate (10), a dial (11), a pointer disc (12), a vertical fixing plate (13), a centering telescope assembly (14) and a laser range finder assembly (15);
the L-shaped support rod (9) is embedded in a rock body below the monitoring hole (1), one end of the L-shaped support rod (9) is bent upwards and connected with the orifice base plate (10) in a threaded mode, a plurality of threaded rods (17) with spiral hand wheels (16) are arranged on the orifice base plate (10) in an annular mode, the dial (11) is sleeved above the plurality of threaded rods (17), the pointer disc (12) is horizontally switched above the dial (11), a connecting screw rod is further arranged between the dial (11) and the pointer disc (12) to fix the dial and the pointer disc (12) is provided with leveling bubbles (21);
pointer dish (12) one side still can dismantle to be connected with and vertically lay vertical fixation board (13), vertical fixation board (13) are the plate body structure that transparent glass board made, and vertical fixation board (13) middle part level corresponds with connecting pipe (4), and vertical fixation board (13) middle part still pitch has changeed and has connect centering telescope subassembly (14) or laser range finder subassembly (15), still is provided with vertical angle scale (27) on vertical fixation board (13) in order to show turned angle.
2. The multipoint displacement meter for measuring three-way displacement in the rock mass is characterized in that the diameters of two ends of the measuring point anchoring head (2) are smaller than the diameter of the middle part of the measuring point anchoring head to form a stepped ring shape, the remote control light source (3) and the measuring point target (7) are respectively arranged at two ends of the measuring point anchoring head (2), the measuring point target (7) is a circular plate, and the diameter of the measuring point target (7) is matched with the inner diameter of the measuring point anchoring head (2);
the measuring point anchoring head (2) is sleeved with the connecting pipe (4), the connecting pipe is bonded with the measuring point anchoring head (2), and the connecting pipe (4) is communicated with the measuring point anchoring heads (2) after being connected and combined.
3. The multipoint displacement meter for measuring three-way displacement in a rock mass is characterized in that the orifice iron clamp (5) comprises a herringbone suspension rod pre-embedded in the monitoring hole (1) and a plurality of iron clamps arranged below the suspension rod at intervals, the iron clamps correspond to the measuring point targets (7) one by one, the steel wire pull ropes (6) are arranged between the iron clamps and the measuring point targets (7) to control the overturning of the measuring point targets (7), and the lengths of the steel wire pull ropes (6) are different.
4. A multipoint displacement gauge for measuring three-way displacement inside a rock mass according to claim 1, characterized in that the L-shaped brace rod (9) comprises a horizontal rod (91) and a vertical rod (92) which are bolted, the vertical rod (92) being screwed with the orifice base plate (10);
dial (11) are located between a plurality of spiral hand wheels (16), and dial (11) are the disc structure, and dial (11) circumference lateral wall is provided with horizontal angle scale (18), and dial (11) middle part is provided with horizontal rotating shaft (19), and dial (11) pass through horizontal rotating shaft (19) rotate with pointer dish (12) and are connected.
5. The multipoint displacement meter for measuring three-way displacement in rock mass is characterized in that the pointer disc (12) and the dial disc (11) are arranged in parallel up and down with the orifice base plate (10), the pointer disc (12) and the dial disc (11) are overlapped up and down, the pointer disc (12) is also a circular disc, a horizontal pointer (20) is arranged on the side wall of the pointer disc (12), and the horizontal pointer (20) is matched with the horizontal angle scale (18) to display a horizontal rotation angle.
6. The multipoint displacement meter for measuring three-way displacement in rock mass according to claim 1, characterized in that the dial (11) is symmetrically provided with lower ring grooves (23) at both sides, the lower ring grooves (23) penetrate through the dial (11), the pointer disc (12) is symmetrically provided with upper ring grooves (24) at both sides, the upper ring grooves (24) penetrate through the pointer disc (12), and both the upper ring grooves (24) and the lower ring grooves (23) are in minor arc shape and correspond up and down;
the connecting screw rod comprises a fastening rod (221) and a fastening cap (222), the fastening rod (221) is arranged in the lower annular groove (23) on two sides, and the fastening rod (221) vertically extends upwards to extend through the upper annular groove (24) and then is connected with the fastening cap (222) through threads.
7. The multipoint displacement meter for measuring three-way displacement in rock mass according to claim 1, wherein a slot (32) is formed in one side of the pointer plate (12), the vertical fixing plate (13) is clamped in the slot (32), the vertical fixing plate (13) is further connected with the pointer plate (12) through a bolt, a rotating hole (29) is formed in the middle of the vertical fixing plate (13), the centering telescope assembly (14) or the laser range finder assembly (15) is rotatably connected in the rotating hole (29), and the vertical angle scale (27) is distributed on the periphery of the rotating hole (29).
8. The multipoint displacement meter for measuring three-way displacement in a rock mass according to claim 7, wherein the centering telescope assembly (14) comprises a centering telescope clamping seat (141) and a centering telescope body (142) clamped in the centering telescope clamping seat (141), and the laser range finder assembly (15) comprises a laser range finder clamping seat (151) and a laser range finder body (152) clamped in the laser range finder clamping seat (151);
the centering telescope clamping seat (141) and the laser range finder body (152) are identical in structure, the cross section of the centering telescope clamping seat (141) is in a shape like a Chinese character [, hand-screwed bolts (28) are arranged on the upper side and the lower side of the centering telescope clamping seat (141), the head ends of the hand-screwed bolts (28) extend into the centering telescope clamping seat (141) and are tightly abutted against the centering telescope body (142) to be fixed, a stepped vertical rotating shaft (30) is arranged on the centering telescope clamping seat (141), and the vertical rotating shaft (30) penetrates through the rotating hole (29) and is in threaded connection with a nut (31);
the vertical rotating shaft (30) is also provided with a vertical pointer (25), and the vertical pointer (25) is matched with a vertical angle scale (27) to display a pitching rotation angle.
9. A method for measuring a multipoint displacement meter for measuring three-way displacement in a rock mass, which is characterized in that the multipoint displacement meter for measuring three-way displacement in a rock mass based on any one of claims 1 to 8 comprises the following steps:
step 1, equipment assembly:
step 1.1, assembling units in the hole: one end of each measuring point anchoring head (2) is elastically hinged with a measuring point target (7), and the measuring point target (7) is connected with a steel wire pull rope (6); sequentially bonding each measuring point anchoring head (2) through a connecting pipe (4), and enabling one end of a steel wire pull rope (6) to penetrate out along the inside of the connecting pipe (4); respectively tensioning the steel wire pull ropes (6), cutting off the steel wire pull ropes (6) at a position exceeding the pipe orifice of the connecting pipe (4) by a certain distance, and marking numbers on the end parts of the steel wire pull ropes (6) extending out of the connecting pipe (4);
then inserting the assembled measuring point anchoring head (2) and the connecting pipe (4) into the monitoring hole (1), grouting and anchoring between the connecting pipe (4) and the rock wall of the monitoring hole (1), and finally fixing the end part of each steel wire stay cord (6) on an iron clamp of the rock wall of the hole, wherein the measuring point target (7) is in a turning-open state;
step 1.2, assembling an orifice unit: an orifice base plate (10) is installed at the upper end of an L-shaped stay bar (9), then a dial (11) and a pointer disc (12) are installed on the orifice base plate (10), a plurality of spiral hand wheels (16) are adjusted to enable the upper surface of the pointer disc (12) to be in a horizontal state, the pointer disc (12) is rotated to enable a horizontal pointer (20) to be aligned to the 0-scale position of a horizontal angle scale (18), at the moment, a cutting groove (32) in the upper surface of the pointer disc (12) is in a parallel state with the axis of a monitoring hole (1), and a fastening cap (222) is screwed to fix the relative positions of the dial (11) and the pointer disc (12);
the vertical fixing plate (13) is arranged in the cutting groove (32) and is fixed by adopting a bolt; the centering telescope body (142) is installed in the centering telescope clamping seat (141) and fixed, a vertical rotating shaft (30) of the centering telescope clamping seat (141) is inserted into the rotating hole (29), the centering telescope body (142) is rotated to enable a vertical pointer (25) to point to the 0-degree position of a vertical angle scale (27), and a nut (31) is screwed to enable a centering telescope component (14) to keep a fixed state;
step 2, measuring three-way displacement data of a measuring point anchoring head (2) in the rock mass:
step 2.1, measuring rock mass three-way data corresponding to the installed side point anchoring head: opening a remote control light source (3) in one measuring point anchoring head (2), and pulling a corresponding steel wire pull rope (6) to enable a measuring point target (7) of the measuring point anchoring head (2) to be in a turning closed state; adjusting the focal length of a centering telescope body (142) to enable a measuring point target (7) to clearly image, loosening a fastening cap (222) and a screw cap (31), aligning a reticle cross wire in the centering telescope body (142) to a target point (8) of the measuring point target (7) through horizontally rotating a pointer disc (12) and vertically rotating a centering telescope component (14), screwing the fastening cap (222) and the screw cap (31) again, and recording a reading alpha 1 of a horizontal angle scale (18) and a reading alpha 2 of a vertical angle scale (27) corresponding to a horizontal pointer (20) and a vertical pointer (25) at the moment;
detaching the centering telescope component (14), installing the laser range finder component (15) on the vertical fixing plate (13), and measuring the distance of the measuring point target (7) in the step 2.1: rotating the pointer plate (12) and the laser range finder assembly (15) so that the horizontal pointer (20) and the vertical pointer (25) point to the positions of the horizontal angle scale (18) alpha 1 and the vertical angle scale (27) alpha 2; a switch of the laser range finder body (152) is turned on, at the moment, a light path emitted by the laser range finder body (152) is just aligned to the position of the target point (8) of the measuring point target (7), and the distance d1 from the laser range finder body (152) to the measuring point target (7) is read;
step 2.2, measuring rock mass three-way data corresponding to the offset of one side point anchoring head: after the rock mass in the monitoring hole (1) deforms, repeating the step 2.1, reading the reading alpha 1' of the horizontal angle scale (18) and the reading alpha 2' of the vertical angle scale (27) where the measuring point anchoring head (2) is located, and reading the distance d1' from the laser range finder body (152) to the measuring point target (7) on the measuring point anchoring head (2);
then the displacement delta y = d1'cos alpha 2' cos alpha 1'-d1 cos alpha 2 cos alpha 1 in the vertical direction corresponding to the measuring point anchoring head (2), the displacement delta x = d1' cos alpha 2 'sin alpha 1' -d1 cos alpha 2 sin alpha 1 in the horizontal direction parallel to the rock wall, and the displacement delta z = d1'sin alpha 2' -d1 sin alpha 2 sin alpha 1 in the vertical direction, so that the rock mass three-way displacement data corresponding to the measuring point anchoring head (2) is obtained;
step 3, measuring three-way displacement data of the other measuring point anchoring heads (2) in the rock mass: and (3) repeating the step (2) to measure the rock mass three-way displacement data corresponding to the rest measuring point anchoring heads (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211190351.4A CN115451832A (en) | 2022-09-28 | 2022-09-28 | Multipoint displacement meter for measuring three-dimensional displacement in rock mass and measuring method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211190351.4A CN115451832A (en) | 2022-09-28 | 2022-09-28 | Multipoint displacement meter for measuring three-dimensional displacement in rock mass and measuring method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115451832A true CN115451832A (en) | 2022-12-09 |
Family
ID=84306026
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211190351.4A Pending CN115451832A (en) | 2022-09-28 | 2022-09-28 | Multipoint displacement meter for measuring three-dimensional displacement in rock mass and measuring method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115451832A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117572441A (en) * | 2023-11-21 | 2024-02-20 | 中国科学院武汉岩土力学研究所 | Quick layout measuring device for roadway rock wall drilling and construction method |
-
2022
- 2022-09-28 CN CN202211190351.4A patent/CN115451832A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117572441A (en) * | 2023-11-21 | 2024-02-20 | 中国科学院武汉岩土力学研究所 | Quick layout measuring device for roadway rock wall drilling and construction method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105223969A (en) | A kind of sensor mounting adjustment system and laser instrument leveling benchmark device | |
| CN115451832A (en) | Multipoint displacement meter for measuring three-dimensional displacement in rock mass and measuring method | |
| CN110644973A (en) | Drilling angle measuring instrument and measuring method thereof | |
| CN114754738A (en) | Simple bridge pier column verticality measuring device and measuring method | |
| CN206594538U (en) | A kind of multiple-angle thinking determines platform | |
| CN205068175U (en) | Sensor mounting adjustment system and laser instrument leveling standard apparatus | |
| CN215833681U (en) | Combined prism device capable of being freely adjusted and being aligned in multiple directions | |
| CN115574686A (en) | Device and method for monitoring deflection displacement of adjacent pile body in pipe pile construction process | |
| CN201575805U (en) | Deck theodolite | |
| CN216159888U (en) | Fixing support for roadbed and pavement settlement observation scale | |
| CN205718968U (en) | Scale-type laser orientation instrument | |
| CN201130023Y (en) | Anchored net spraying laneway laser installation apparatus | |
| CN110260848B (en) | Compass, anti-electromagnetic interference compass and method for measuring geologic body occurrence in tunnel | |
| CN111879252A (en) | Online surveying and mapping detection device and method for storage tank body | |
| CN108362276A (en) | A kind of more optical axis school axle systems of large-span space and its calibration apparatus and method | |
| CN108645376B (en) | Telescopic leveling device and detection method thereof | |
| CN209197743U (en) | Prism fixing device is used in a kind of monitoring of total station | |
| KR20080048771A (en) | Laser horizontality-perpendicularity equipment and a trivet | |
| CN108716922B (en) | Self-checking north reference device | |
| CN211928163U (en) | High-precision distance meter for engineering cost | |
| CN215865042U (en) | Detachable real-time bidirectional measurement machinery hangs down straightness's simple and easy instrument | |
| CN110132109B (en) | Indicator for longitudinal display angle and use method thereof | |
| CN212030544U (en) | Slope calibration instrument | |
| CN212409637U (en) | Online mapping detection device for storage tank body | |
| CN216787866U (en) | Elevation is fixing device for reinforcing bar |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |