CN113310726B - Portable sampling system and method in narrow space - Google Patents

Abstract

The invention discloses a portable sampling system and a sampling method in a narrow space, which solve the problem that a sampling device in the prior art is not beneficial to narrow space sampling, have the beneficial effect of improving the sampling speed of rocks in a small tunnel and a complex terrain, and have the following concrete scheme: a portable sampling system in a narrow space comprises a telescopic supporting rod, wherein one end of the supporting rod can be in contact with surrounding rocks; the drilling unit is used for drilling and sampling the surrounding rock; the device comprises an acting force providing unit, a supporting rod and a drilling unit, wherein the supporting rod is arranged on one side of the acting force providing unit, the acting force providing unit comprises a telescopic rod, a telescopic column and a supporting part capable of being in contact with surrounding rocks, the telescopic rod is arranged on the periphery of the telescopic column, the supporting part supports the telescopic rod, the telescopic column, the supporting rod and the drilling unit, and the telescopic rod can extend to provide acting force for the supporting rod and the supporting part; the telescopic column is connected with the drilling unit to drive the drilling unit to move telescopically.

Description

A portable sampling system and method in a narrow space

technical field

The invention relates to the field of rock sampling, in particular to a portable sampling system and method in a narrow space.

Background technique

The statements in this section merely provide background information related to the present invention and do not necessarily constitute prior art.

Rock sampling is a kind of sampling work in geological work, that is, collecting rock or ore samples for indoor observation or experiment. Rock sampling, as a traditional geological data acquisition and collection method, has been widely used in geological scientific research, regional survey, resource exploration, lithology catalog and oil logging, etc. It is the basis for indoor analysis and experimentation.

The inventors found that, on the one hand, when sampling inside a small tunnel, it is often difficult for a large sampler to enter. Moreover, in some complex terrains, such as narrow tunnels, the current small hand-held samplers are likely to be inconvenient to operate due to the narrow space, which will affect the sampling efficiency and lead to a decline in the quality of core samples. On the other hand, most of the current samplers in the tunnel need to be driven into the anchor rod to provide the supporting reaction force, the speed is relatively slow, and due to the lack of stability during the sampling process, the cores taken out are irregular, which affects the follow-up research.

Contents of the invention

In view of the deficiencies in the prior art, the purpose of the present invention is to provide a portable sampling system in a narrow space, a portable detachable rock sampler, to improve the speed of rock sampling in small tunnels and complex terrain, and to improve the sampling process. stability.

In order to achieve the above object, the present invention is achieved through the following technical solutions:

A portable confined space sampling system comprising:

A telescopic support rod, one end of the support rod can be in contact with the surrounding rock;

Drilling unit for drilling and sampling surrounding rock;

The force supply unit, the support rod is arranged on one side of the force supply unit, the force supply unit includes a telescopic rod, a telescopic column and a supporting part that can be in contact with the surrounding rock, the telescopic rod is provided on the peripheral side of the telescopic column, and the supporting part supports The telescopic rod, the telescopic column, the support rod and the drilling unit, the telescopic rod can be extended to provide force to the support rod and the supporting parts; the telescopic column is connected with the drilling unit to drive the telescopic movement of the drilling unit.

The above-mentioned sampling system is no longer a monolithic structure, but is composed of multi-section structures. The telescopic support rod can reduce the size of the sampling system, which is convenient for the sampling system to be used in a narrow space; the setting of the force providing unit can The support rods and support components are in stable contact with the surrounding rock, providing a point of gravity for the overall sampling system, thereby improving the stability of the system.

As described above, a portable sampling system in a narrow space, the support component includes a first support platform and a second support platform, and the telescopic rod and the telescopic column;

The first support platform is fixedly connected to the support rod, or, in order to facilitate on-site assembly and ensure the portability of the entire sampling system, the first support platform is detachably connected to the support rod.

For a portable sampling system in a narrow space as described above, in order to realize the connection between the telescopic column and the drilling unit, the second support platform is provided with an opening, one end of the telescopic column is connected to the first support platform, and the other One end can pass through the opening and be connected with the drilling unit.

A portable sampling system in a narrow space as described above, a pressure sensor is arranged between the telescopic rod and the first support platform or the second support platform, and the pressure sensor is used to measure the impact of the hydraulic rod on the second support platform. The pressure of the first support platform or the second support platform to avoid excessive pressure;

The pressure sensor, the drilling unit, the telescopic rod and the telescopic column are respectively connected to the control unit, so that the control unit realizes the control of each component. When the pressure sensor detects that the pressure is greater than the set value, the control unit Control the reverse movement of the telescopic rod.

A portable sampling system in a narrow space as described above, the telescopic column is a hydraulic telescopic column, and the telescopic rod is a hydraulic rod;

An oil chamber capable of storing oil is provided in the first support platform, and the oil chamber is separately connected to the telescopic column and the telescopic rod.

According to a portable sampling system in a narrow space as described above, the support part further includes a support frame, one end of the support frame is detachably connected to the second support platform, and the other end is used for contacting the surrounding rock;

The setting of the support frame can not only effectively and stably support the whole sampling system, but also can stably contact the surrounding rock. The support frame includes multiple legs, and the distance between the ends of the adjacent two legs near the first support platform is smaller than that of the adjacent two legs The distance between the other ends of the brackets.

For the portable sampling system in a narrow space as described above, in order to further facilitate on-site assembly and improve the portability of the sampling system, the end of the telescopic column is detachably connected to the drilling unit.

For a portable sampling system in a narrow space as described above, in order to realize the detachable connection between the telescopic column and the drilling unit, a protrusion is provided at the end of the telescopic column, and a clamping plate is provided at one end of the drilling unit. The plate is provided with a card slot capable of matching with the protrusion.

As described above, a portable sampling system in a narrow space, the drilling unit includes a power mechanism, one end of the power mechanism is connected to the telescopic column, the power end of the power mechanism is connected to the drill rod, and the end of the drill rod is installed with Core drill.

In the second aspect, the present invention also provides a sampling method in a portable narrow space, using the sampling system in a portable narrow space, including the following:

Determine the rock mass that needs to be sampled, and assemble the telescopic rod, drilling unit and force supply unit;

Aim the sampling system at the target rock mass, extend the support rod until the end of the support rod contacts the rock mass;

The telescopic rod works so that both ends of the sampling system are in contact with the rock mass, and the telescopic rod generates force to press the sampling system against the rock mass;

Working through the telescopic column and the drilling unit, the rock sample is drilled and sampled.

The above-mentioned beneficial effects of the present invention are as follows:

1) In the present invention, the support rod can be telescopically arranged, which facilitates the sampling system to enter narrow spaces or small tunnels in a relatively short size, and facilitates the application of the sampling system in special occasions; further, the first support platform is detachably connected to the support rod, and the telescopic The detachable connection between the column and the drilling unit makes the sampling system portable and can be assembled on site.

2) The present invention not only realizes the connection with the drilling unit and the support rod through the setting of the active force providing unit, but also enables the support frame and the support rod to be stably pressed against the surrounding rock through the setting of the telescopic rod. On the other hand, Power can be provided to the drilling unit through the telescopic column, and the setting of the telescopic column further reduces the original size of the sampling system, further facilitating the application of the overall system in narrow spaces or small tunnels.

3) The present invention can provide support for the sampling system through the setting of the telescopic rod, so that both ends of the sampling system can be pressed against the surrounding rock, and then stably contact with the surrounding rock, reducing the time required for bolting in the prior art. The disturbance to the surrounding rock is reduced, and the working efficiency of the sampling system is improved;

Further, through the setting of the telescopic column, it can be detachably connected with the drilling unit to drive the telescopic movement of the drilling unit.

4) The present invention is provided with by the supporting frame, and the supporting frame can stably support the sampling system, which improves the stability in the sampling process, reduces phenomena such as rock core shape irregularity caused by the instability of the drilling rig in the sampling process, and improves the sampling process. the accuracy of subsequent experiments.

Description of drawings

The accompanying drawings constituting a part of the present invention are used to provide a further understanding of the present invention, and the schematic embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute improper limitations to the present invention.

Fig. 1 is the front view of the sampling system in a kind of portable narrow space in the embodiment;

Fig. 2 is a front view of the elongation of the support rod in the sampling system in a portable narrow space in the embodiment;

Fig. 3 is a schematic diagram of a force providing unit in a portable sampling system in a narrow space according to an embodiment.

Fig. 4 is a front view of the drilling unit in a sampling system in a portable narrow space in the embodiment;

Fig. 5 is a schematic diagram of three legs of a portable sampling system in a narrow space in an embodiment.

Among them, 1 is the support rod, 2 is the force supply unit, 3 is the drilling unit, 4 is the first support platform, 5 is the second support platform, 6 is the hydraulic rod, 7 is the foot support, 8 is the hydraulic switch, 9 is a hydraulic expansion column, 10 is a buckle, 11 is a power mechanism, and 12 is a drill rod.

Detailed ways

It should be noted that the following detailed description is exemplary and intended to provide further explanation of the present invention. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.

It should be noted that the terminology used here is only for describing specific embodiments, and is not intended to limit exemplary embodiments according to the present invention. As used herein, unless the invention clearly states otherwise, the singular form is also intended to include the plural form. In addition, it should also be understood that when the terms "comprising" and/or "comprising" are used in this specification, their Indicate the presence of features, steps, operations, means, components and/or combinations thereof;

For the convenience of description, if the words "up", "down", "left" and "right" appear in the present invention, they only indicate that they are consistent with the directions of up, down, left and right of the drawings themselves, and do not limit the structure. It is only for the convenience of describing the present invention and simplifying the description, but does not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention.

Explanation of terms: The terms "installation", "connection", "connection", "fixation" and other terms in the present invention should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral body; It can be a mechanical connection, or an electrical connection, a direct connection, or an indirect connection through an intermediary, or an internal connection between two elements, or an interaction relationship between two elements. For those of ordinary skill in the art, , the specific meanings of the above terms in the present invention can be understood according to specific situations.

As introduced in the background technology, there is a problem in the prior art that the sampler is relatively large, which is not conducive to sampling in a narrow space. In order to solve the above technical problems, the present invention proposes a portable sampling system in a narrow space.

In a typical implementation of the present invention, as shown in FIG. 1, a portable sampling system in a narrow space includes a support rod 1, a force providing unit 2 and a drilling unit 3. The drilling unit 3 is mounted on the most Below, the drilling unit includes a drill rod to drill the tunnel, and the support rod is fixed on one side of the force providing unit 2, and the force providing unit is used to provide force to the support rod to press the support rod on the Surrounding rock; the drilling unit can be connected with the force providing unit through buckles.

Further, in order to realize sampling, the end of the drill pipe 12 is provided with a coring bit, so as to take samples from a narrow space or a small tunnel through the coring bit, and the drilling unit capable of drilling and sampling the surrounding rock is a drilling unit of the prior art. Drilling mechanism, the drilling unit includes a drill pipe 12, and a lifter for cutting off the taken rock sample is arranged inside the drill pipe 12.

Considering that the sampling system is to be applied in narrow spaces or small tunnels, the support rod can be set telescopically, so that the support rod 1 can shorten the size of the entire sampling system in the shortest state, making it easy for the entire system to enter narrow spaces or small tunnels. The support rod 1 The axis and the drill pipe axis of the drilling unit are parallel to each other. In the optimal solution, the central axis of the support rod 1 and the central axis of the drill pipe are located on the same straight line.

As shown in Figure 2, the support rod 1 can be stretched along the axial direction of the drill pipe. The support rod 1 includes a plurality of mutually nested support rods; The small-diameter rod body slides out along the outer rod body to achieve the purpose of elongation for support. In addition, the actual extension length of the support rod can be determined by the actual situation.

Of course, it is easy to understand that the cross-section of the support rod is also square, as long as it can be stretched.

In some examples, two adjacent support rods can be locked by a locking member. The locking member can be a bolt that can pass through the outer rod body and the inner rod body. After the support rod stretches to the set position, the bolt can Through the outer rod body and the inner rod body, the maintenance of the length of the support rod is realized.

Of course, in some examples, the support rod is an electric telescopic rod, and the electric telescopic rod is connected with the control unit.

Referring to Fig. 3, the force providing unit includes a first support platform 4 and a second support platform 5, the first support platform is detachably connected with the support rod, the first support platform 4 is provided with a first groove, and the second support platform The shape of a groove is adapted to the shape of the support rod, so that the end of the support rod can be snapped into the first groove, specifically, the first groove is in interference fit with one end of the support rod, and the first support platform 4 is connected with the drilling unit, and the first support platform 4 and the second support platform 5 are connected through telescopic parts.

The telescopic parts include a telescopic column arranged on the first support platform 4 and at least one telescopic rod arranged on the peripheral side of the telescopic column. The telescopic rod is a hydraulic rod 6. The telescopic column is also a hydraulic telescopic column. The unit provides reaction force; the second support platform is provided with an opening, so that the hydraulic telescopic column can pass through the opening and be connected with the drilling unit.

It is easy to understand that through the setting of the hydraulic rod, the hydraulic rod can be stretched and extended, and can provide force to the telescopic rod to stably contact the two ends of the overall system with the surrounding rock; the drilling unit is driven by the hydraulic telescopic rod, and the corresponding length is also shortened. The overall length of the entire sampling system is improved, which is convenient for the space of the sampling system in a narrow space.

In some examples, a plurality of hydraulic rods can be provided, specifically four hydraulic rods 6, the first support platform 4 is detachably connected to one end of the support rod, and one side of the second support platform 5 is detachably connected to the support frame. Connection, through the support frame to fix the force providing unit 2 at the set height.

It is easy to understand that the telescopic rod can also be other telescopic rods, such as an electric cylinder. The component drives the overall movement of the support rod through the first bearing platform.

Specifically, in order to avoid the interference of the support frame to the drilling unit, the support frame includes a plurality of foot supports 7, specifically three foot supports 7, as shown in FIG. It is arranged at a set angle, and the end of the foot support 7 away from the second support platform 5 is set away from the drilling unit. The extension lines of the adjacent two foot supports form an included angle with a set angle, and one end of each foot support 7 is connected to the second The bearing platform is fixed, and the other end is used for contacting with the rock surface, and the distance between the adjacent two-legged supports near one end of the first bearing platform is less than the distance between the other ends of the adjacent two-legged supports.

Among them, in order to further facilitate the on-site assembly of the sampling system, the foot support is detachably connected to the second support platform. Specifically, one end of the second support platform is provided with a plurality of second grooves, and one end of the foot support can be stuck in the second recess. It is arranged in the groove, and the foot support is in interference fit with the second groove.

Of course, in some other examples, the support frame can also be other types of support frames, as long as the stable support of the support rod and the drilling unit can be guaranteed, but considering the portability of the sampling system, the support frame in the optimal solution Select multiple foot supports.

In addition, when the telescopic rod is a hydraulic rod and the telescopic column is a hydraulic column, the first support platform 4 is provided with an oil chamber, and the oil used for hydraulic pressure is stored in the oil chamber, and the oil chamber is connected with the hydraulic rod and the hydraulic telescopic column. In the same way, the oil chamber of the first support platform is provided with a pipeline, and the pipeline is provided with a hydraulic switch 8 . Wherein, the first support platform 4 is connected with the telescopic rod 1, the hydraulic rod 6, and the hydraulic telescopic column 9, and acts as an oil storage device; The telescopic rod 1 serves as the focus point of the entire force providing unit.

In addition, a pressure sensor is set between the telescopic rod and the first support platform or the second support platform; the pressure sensor, the power mechanism of the drilling unit, the hydraulic rod and the hydraulic telescopic column are respectively connected with the control unit, and the control unit can be controlled by PLC controller or other types of controllers.

When working, in order to provide sufficient stability, the support rod can be extended until it withstands the surrounding rock. At this time, the hydraulic switch is used to fill the hydraulic rod 6 with oil, and all four hydraulic rods are stretched to press the telescopic rod on the surrounding rock. Press down the second support platform together with the foot support 7, and finally firmly press the foot support 7 on the surrounding rock mass of the core to be taken, and finally transform part of the force of the surrounding rock on the telescopic rod through internal force In order to firmly press the whole system on the rock mass to be cored, so as to provide sufficient stability for the whole sampling system.

On the other hand, under the action of multiple hydraulic rods, the force generated by the contact between the support rod and the surrounding rock can be used to stabilize the sampling system, and the hydraulic telescopic column can provide power to the drilling unit. The drilling unit is connected. When working, the hydraulic oil is injected into the hydraulic telescopic column through the hydraulic switch, and the hydraulic telescopic column drives the drilling unit to move.

As shown in Figure 4, the drilling unit includes a power mechanism 11 and a drill rod 12, the power mechanism is connected to the drill rod 12, and one end of the power mechanism is provided with a buckle 10, the main function of the buckle 10 is to connect with the force providing unit. When working, when the hydraulic rod is extended, the drilling unit is in the drilling state, and works downward to obtain the core. After the coring is completed, the lifter installed in the drill pipe cuts off the core, and then the hydraulic rod is shortened to drive the drilling unit to connect with the core in the drill pipe to lift upwards, ending the entire sampling process.

Specifically, the power mechanism is the power source of the drill pipe 12, and the power mechanism drives the rotation of the drill pipe 12. The power mechanism can be a motor or other power source, and the power mechanism is also connected to the control unit.

The buckle is a clamping plate located at the end of the power mechanism. The clamping plate is provided with a clamping groove. The cross section of the clamping groove is an inverted T shape. One end of the hydraulic telescopic column is provided with a protrusion. The shape of the protrusion is suitable for the shape of the clamping groove. Matching, so that the force providing unit can be snapped into the buckle slot to realize the connection between the force providing unit and the drilling unit.

In order to ensure a stable connection between the force providing unit and the drilling unit, the clamping groove has a set length, and the protrusion of the corresponding hydraulic telescopic column also has a set length.

It should be further noted that, for portability, the entire sampling system is designed as a detachable device. Among them, the telescopic rod 1 is connected with the first support platform through screws, the foot support is connected with the second support platform through a card slot, the drilling unit is connected with the hydraulic telescopic column through buckles, and the rest is a whole. , the hydraulic rod and the hydraulic telescopic rod are all in the shortest state to minimize the occupied volume.

The process of using the above-mentioned device to complete the sampling specifically includes:

Step 1: Determine the rock mass that needs to be sampled, and assemble the sampling unit. First, fix the foot bracket 7 on the second support platform, then install the telescopic rod, and finally fix the sampling unit on the second support platform.

Step 2: Aim the sampler at the target rock mass by hand and keep the entire sampler stable. At this time, extend the telescopic rod and stop when the telescopic rod touches the rock mass. During the whole process, maintain the stability of the sampling system by hand .

Step 3: Start the hydraulic rod. Since both ends of the sampling system are in contact with the rock mass, the hydraulic rod will generate force to press the sampling system stably on the rock mass. Observe the pressure sensor at the hydraulic rod to avoid excessive pressure. After the sampling system is stabilized, it can no longer be maintained artificially.

Step 4: Start the drill rod and the hydraulic telescopic column, the hydraulic rod provides power for drilling, and the extension and shortening of the hydraulic telescopic column drives the drill bit down and up. During the drilling process, the hydraulic telescopic column is adjusted by the pressure sensor to maintain the drilling pressure at a relatively constant state until the drilling is completed.

Step 5: After the drilling is completed, the hydraulic telescopic column is shortened, driving the drill bit and the core to move upward, and the sampling is completed.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims (9)

1. A sampling method in a portable narrow space, comprising: Determine the rock mass that needs to be sampled, and assemble the telescopic rod, drilling unit and force supply unit; Aim the sampling system at the target rock mass, extend the support rod until the end of the support rod contacts the rock mass; The telescopic rod works so that both ends of the sampling system are in contact with the rock mass, and the telescopic rod generates force to press the sampling system against the rock mass; Working through telescopic column and drilling unit, drilling and sampling rock samples; Among them, a portable sampling system in a narrow space, including: A telescopic support rod, one end of the support rod can be in contact with the surrounding rock; Drilling unit for drilling and sampling surrounding rock; The force supply unit, the support rod is arranged on one side of the force supply unit, the force supply unit includes a telescopic rod, a telescopic column and a supporting part that can be in contact with the surrounding rock, the telescopic rod is provided on the peripheral side of the telescopic column, and the supporting part supports A telescopic rod, a telescopic column, a support rod and a drilling unit, the telescopic rod can be extended to provide force to the support rod and the supporting parts; the telescopic column is connected to the drilling unit to drive the telescopic movement of the drilling unit; The support component includes a first support platform and a second support platform, and the telescopic rod and the telescopic column are installed between the first support platform and the second support platform; The support component also includes a support frame, one end of the support frame is detachably connected to the second support platform, and the other end is used to contact the surrounding rock; The support frame includes a plurality of leg supports, and the distance between the ends of the adjacent two-leg supports close to the second support platform is smaller than the distance between the other ends of the adjacent two-leg supports. 2. A portable sampling method in a narrow space according to claim 1, characterized in that the first support platform is fixedly connected to the support rod. 3. A portable sampling method in a narrow space according to claim 1, characterized in that the first support platform is detachably connected to the support rod. 4. The sampling method in a portable narrow space according to claim 1, wherein the second support platform is provided with an opening, one end of the telescopic column is connected to the first support platform, and the other end can It is connected with the drilling unit through the opening. 5. The sampling method in a portable narrow space according to claim 1, wherein a pressure sensor is arranged between the telescopic rod and the first support platform or the second support platform; The pressure sensor, the drilling unit, the telescopic rod and the telescopic column are respectively connected with the control unit. 6. The sampling method in a portable narrow space according to claim 1, wherein the telescopic column is a hydraulic telescopic column, and the telescopic rod is a hydraulic rod; An oil chamber capable of storing oil is arranged in the first support platform, and the oil chamber is separately connected to the telescopic column and the telescopic rod. 7. A portable sampling method in a narrow space according to claim 4, characterized in that the end of the telescopic column is detachably connected to the drilling unit. 8. The sampling method in a portable narrow space according to claim 7, wherein a protrusion is provided at the end of the telescopic column, and a clamping plate is provided at one end of the drilling unit, and the clamping plate is provided with a Card slots that match the protrusions. 9. The sampling method in a portable narrow space according to claim 4, wherein the drilling unit includes a power mechanism, one end of the power mechanism is connected to the telescopic column, and the power end of the power mechanism is connected to the drill rod. Connection, the end of the drill pipe is equipped with a core bit.

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