Auxiliary measuring equipment for irregular drilling of broken and weak surrounding rock roadway

Abstract

The embodiment of the utility model discloses auxiliary measurement equipment for irregular drilling of a broken weak surrounding rock roadway, and relates to the technical field of roadway drilling measurement. The hole measuring equipment comprises the limiter capable of extending into a hole and a tough soft bag which is fixed on a fixing plate at the tail end of the limiter and wraps a material injection pipe of the limiter, and after the limiter extends into a drill hole, a limiter fixing assembly is installed on the outer wall of the drill hole. The internal space of the flexible soft bag is connected with a material injection pipe of the limiter, a liquid material with certain pressure is injected into the flexible soft bag by utilizing the flexibility and ductility of the flexible soft bag, so that the flexible soft bag expands and extends in the drill hole, and a solid forming material conforming to the shape of the hole can be obtained after the liquid material is cured. According to the utility model, for holes with various internal shapes, especially under the condition that the holes are irregularly formed or large cracks exist in the holes, the shape characteristics in the holes can be accurately obtained, so that various internal parameters of the holes can be accurately measured.

Description

Technical Field

[0001] This utility model relates to the field of measurement technology for irregular boreholes in roadways with fractured and weak surrounding rock, and in particular, it can accurately obtain and measure complex parameters inside the borehole for fractured and weak holes, irregularly shaped holes, or holes with large cracks. Background Technology

[0002] Currently, the internal shape and other parameters of boreholes in surrounding rock tunnels can be measured using general depth and diameter measuring tools, lasers, and radar. However, for tunnels in fractured and weak surrounding rock, the surrounding rock typically has low strength and high porosity, poor cementation, and may be affected by structural cutting and weathering. During the drilling process, due to manual excavation, the surrounding rock mass is affected by cutting and drill rod vibration, resulting in changes in stress state and irregular borehole formation. The shape, size, surface quality, concentricity, verticality, or orientation parameters of the borehole deviate from the expected design, or there may be irregular large fissures inside the borehole. Existing technologies can only obtain the basic depth, diameter, and basic hole shape parameters of the borehole. When measuring the internal parameters of boreholes in fractured and weak surrounding rock, it is difficult to accurately measure the detailed shape and other parameters of the hole, including fissures. Utility Model Content

[0003] In view of this, the present invention provides an auxiliary measuring device for irregular boreholes in roadways with fractured and weak surrounding rock. Compared with other measuring devices in the prior art, it can obtain the internal shape and structural parameters of irregularly shaped boreholes, boreholes with large cracks and other boreholes with complex internal shapes, as well as other conventional hole parameters, thereby improving the accuracy of borehole parameter measurement.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] In a first aspect, this utility model provides an auxiliary measuring device for irregular drilling in roadways with fractured and weak surrounding rock, comprising: a limiter that can extend into the hole and a tough soft bag fixed to the limiter and wrapped around the injection tube of the limiter; the limiter includes a handle, an injection tube, a fixing plate, and a limiting plate, the limiting plate being at the end of the limiter; the fixing plate being fixed to the side of the limiting plate near the hole opening; the injection tube being fixed to the fixing plate and communicating with the internal space of the tough soft bag; and a limiter fixing assembly being installed on the outer wall of the borehole opening.

[0006] One end of the flexible soft bag near the fixing plate of the limiter is set as a sealing and fixing end, and the sealing and fixing end is fixed to the fixing plate of the limiter; the other end exposed outside the drill hole is set as an outlet / injection port.

[0007] Optionally, the fixing plate of the limiter is connected to the limiting plate of the limiter by bolts or clips.

[0008] Optionally, one end of the injection tube is fixedly connected to the handle, and the other end is fixedly connected to the fixing plate.

[0009] Optionally, one end of the injection tube extending into the drill hole is connected to the fixing plate, and the end of the injection tube near the handle has a cap. The injection tube and the cap are sealed together by threads or snaps. The handle passes through the cap and is sealed to the interface of the cap. The handle passes through the injection tube and is fixedly connected to the fixing plate.

[0010] Optionally, the handle and the fixing plate are fixedly connected, one end of the injection tube is connected to the fixing plate through a flexible material, and the injection tube and the handle are placed side by side in parallel.

[0011] Optionally, the injection tube may have a through hole or a stepped hole near the handle connection.

[0012] Optionally, the injection tube is provided with a channel opening near the handle and near the fixing plate.

[0013] Optionally, the limiter fixing assembly supports the limiter with the handle or the injection tube as a fulcrum.

[0014] This utility model provides an auxiliary measuring device for irregular boreholes in roadways with fractured and weak surrounding rock. The measuring device can be inserted into the borehole, especially for boreholes with irregular shapes or large cracks. Utilizing the flexibility and extensibility of a resilient soft bag, liquid material is injected into the bag under pressure to fill the borehole. This causes the resilient soft bag to expand and stretch within the hole and its gaps, forming a shape that conforms to the shape of the hole, including the gaps. After the liquid material solidifies into a solid molding material, the limiter, the resilient soft bag, and the solid molding material inside are then removed from the borehole for various parameter measurements, thereby obtaining detailed parameters of the borehole's interior in the fractured and weak surrounding rock. Attached Figure Description

[0015] Figure 1 A schematic diagram of the overall structure of the limiter and the flexible soft bag placed in the hole, as provided in Embodiment 1 of this utility model;

[0016] Figure 2 This is a structural diagram of the limiter and a schematic diagram showing the relative positions of the fixing plate and the limit plate in Embodiment 1 of this utility model;

[0017] Figure 3 This is a schematic diagram of the resilient soft bag structure in Embodiment 1 of this utility model;

[0018] Figure 4This is a schematic diagram of a first embodiment of the present invention, in which liquid material is injected into a tough soft bag and solidified to form a solid molding material that conforms to the shape of the pores.

[0019] Figure 5 This is a schematic diagram of the shape of the solid molding material after it is removed from the hole in Embodiment 1 of this utility model;

[0020] Figure 6 This is a schematic diagram of the improved structure in Embodiment 2 of this utility model.

[0021] In the diagram: 1. Limiter; 2. Handle; 3. Injection tube; 4. Fixing plate; 5. Limiting plate; 6. Cover; 20. Tough soft bag; 21. Sealing and fixing end of tough soft bag; 22. Discharge port / injection port of tough soft bag; 25. Solid molding material. Detailed Implementation

[0022] The embodiments of this utility model will now be described in detail with reference to the accompanying drawings.

[0023] It should be understood that the described embodiments are merely some embodiments of this utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model. Example 1:

[0024] This utility model provides an auxiliary measuring device for irregular drilling in roadways with fractured and weak surrounding rock, comprising: a limiter that can extend into the hole and a tough soft bag fixed to the limiter and wrapped around the injection tube of the limiter. The limiter includes a handle, an injection tube, a fixing plate, and a limiting plate. The limiting plate is located at the end of the limiter, and the fixing plate is fixed to the side of the limiting plate near the hole opening. The injection tube is fixed to the fixing plate and communicates with the internal space of the tough soft bag for the entry and exit of gaseous or liquid materials.

[0025] In this embodiment, the measuring equipment includes: a limiter 1 that can extend into the hole and a flexible soft bag 20 fixed to the limiter 1 and wrapped around the injection tube 3. The limiter 1 and the flexible soft bag 20 together can extend into the borehole. The limiter 1 includes a limit plate 5, a fixing plate 4, an injection tube 3, and a handle 2. (See attached image) Figure 1 , Figure 2The limiting plate 5 is located at the end of the limiter 1 and is used to contact and fix it at the designed position of the hole, serving as the base point for the positioning and fixing functions of the limiter 1. The fixing plate 4 is fixed on the side of the limiting plate 5 near the hole and is used to fix and support the injection tube 3 of the limiter 1. The injection tube 3 is fixed on the fixing plate 4, wrapped by the tough soft bag 20, and communicates with the internal space of the tough soft bag 20. It is used to inject liquid material into the tough soft bag 20 under pressure or to discharge liquid material or gas from the tough soft bag 20.

[0026] In some embodiments, the flexible soft bags are all made of flexible material, forming an integrated structure with a through hole. Their two ends differ in shape and function. One end, closer to the fixing plate of the limiter, is designed as a sealing and fixing end, which is fixed to the fixing plate of the limiter. The other end, exposed outside the drill hole, is designed as an outlet / inlet, used for discharging internal gas or liquid material or injecting liquid material into the flexible soft bag when liquid material is injected into it. The flexible soft bag, utilizing its toughness and extensibility, expands and stretches within the holes and gaps under the filling of pressurized liquid material, forming a shape that conforms to the shape inside the holes.

[0027] In this embodiment, as Figure 3 As shown, the flexible soft bag 20 is made of a single piece of flexible material, with a through-hole between its two ends. The two ends have different shapes and functions. The end closer to the fixing plate 4 is designed as a sealing and fixing end 21, which is fixed to the fixing plate 4. The end exposed outside the drill hole is the outlet / inlet 22. When this is used as an outlet, gas or liquid material inside the flexible soft bag 20 is discharged from here. When the flexible soft bag 20 is full of liquid material, some liquid material will be discharged from here. When this is used as an inlet, external liquid... The output port of the liquid material output device is connected here to inject liquid material into the flexible soft bag 20. When liquid material is injected into the flexible soft bag 20, due to the pressure of the injected liquid material and the flexibility and extensibility of the flexible soft bag 20, the flexible soft bag 20 forms a shape that matches the shape inside the hole. After the liquid material wrapped in the flexible soft bag 20 solidifies, it will form a highly flexible solid molding material 25. The shape of the solid molding material 25 includes details such as irregular shapes and gaps inside the hole, which makes it convenient to measure the detailed parameters inside the hole.

[0028] In some embodiments, the fixing plate of the limiter is connected to the limiting plate of the limiter by bolts or buckles, which is used to seal and fix the tough soft bag to prevent the liquid material used for curing during injection from leaking out.

[0029] In this embodiment, the fixing plate 4 and the limiting plate 5 are connected by bolts or clips. When the solid molding material 25 is taken out of the hole for measurement, in order to avoid affecting the measurement, the limiting plate 5 of the limiting device 1 can be easily removed from the limiting device 1, and only the limiting device 1 and the solid molding material 25 attached thereto are measured. At the same time, the fixing plate 4 and the flexible soft bag 20 can be sealed together to prevent the liquid material used for molding during liquid injection from leaking out when fixing the flexible soft bag 20. The limiting plate 5 of the limiting device 1 is used to limit the expansion of the flexible soft bag 20 into the depth of the drill hole, and can block the flexible soft bag 20 after the liquid material solidifies. With the handle 2 exposed outside the drill hole, the solid molding material 25 of the drill hole model formed in the flexible soft bag 20 can be taken out of the drill hole. Without affecting its use, a limiter 1 fixing component is added to the outer wall of the borehole in a position that does not affect its use. The limiter fixing component supports the limiter with the handle or the injection tube as the fulcrum, so that the limiter 1 is kept parallel to the central axis of the borehole or in a slightly inclined state, but not in contact with the inside of the borehole. This prevents the handle 2 and the injection tube 3 from getting close to the inner wall of the borehole under the action of gravity, which would affect the shape of the liquid material in the tough soft bag 20 when it solidifies and cause the measurement of the parameters inside the hole to be distorted.

[0030] In some embodiments, one end of the injection tube is fixedly connected to the handle, and the other end is fixedly connected to the fixing plate;

[0031] In this embodiment, the connection relationship between the injection tube 3, handle 2, and fixing plate 4 is as follows: one end of the injection tube 3 is connected to the handle 2, and the other end is connected to the fixing plate 4; the injection tube 3 and the handle 2 are fixed to the handle 2 by threads or clamps, and the injection tube 3 and the fixing plate 4 are fixed to the fixing plate 4 by threads or clamps. The injection tube 3 is between the handle 2 and the fixing plate 4, and the handle 2 and the fixing plate 4 do not directly contact each other, thus saving the material of the handle 2. The size of the injection tube 3 does not need to accommodate the handle 2 that passes through the pipe, thus saving the material of the injection tube 3.

[0032] In other embodiments, one end of the injection tube that extends into the drill hole is connected to the fixing plate, and the end of the injection tube near the handle has a cap. The injection tube and the cap are sealed together by threads or snaps. The handle passes through the cap and is sealed together with the cap at the interface. The handle passes through the injection tube and is fixedly connected to the fixing plate.

[0033] When liquid material is injected into a large-sized hole, the resulting solid molded material 25 may be quite heavy. The connection strength between the handle 2 and the injection tube 3 may not be sufficient to support the removal of the solid molded material 25 from the hole. As an improvement to the connection relationship between the handle 2, injection tube 3, and fixing plate 4 of the limiter 1 in the above embodiment, the maximum weight of the solid molded material 25 conforming to the shape of the hole that the limiter 1 can support is increased. The specific improvements are as follows:

[0034] The handle 2 of the limiter 1 is made of other materials with better bending resistance or its diameter is increased to enhance its bending resistance.

[0035] The end of the injection tube 3 that extends into the drill hole is connected to the fixing plate 4. The end of the injection tube 3 near the handle 2 has a cover 6. The injection tube 3 and the cover 6 are connected by threads or snaps. The cover 6 is removable, and at the same time, it ensures that the cover 6 and the injection tube 3 are sealed, ensuring the seal on the side of the injection tube 3 near the handle 2 when the handle 2 passes through the injection tube 3.

[0036] The handle 2 passes through the cover 6 of the injection tube 3 and is sealed at the connection with the cover 6 to ensure that liquid material or gas does not leak from the connection between the handle 2 and the cover 6; the handle 2 passes through the injection tube 3 and is directly fixedly connected to the fixing plate 4 to increase the overall support capacity of the limiter 1; a gap is left between the handle 2 and the injection tube 3 so that liquid material or gas can pass through the gap during injection.

[0037] When the diameter of handle 2 is increased, the injection pipe 3 also needs to be selected accordingly with an increased inner diameter, which will increase the cost.

[0038] In this structure, the handle 2 and the fixing plate 4 are directly connected. The handle 2 is made of metal or other high-strength materials. The fixed connection between the handle 2 and the fixing plate 4 is more secure, which is used to support the solid molding material 25 formed in the larger volume hole. The tough soft bag 20 and the solid molding material 25 wrapped inside are taken out from the hole together for various parameter measurements.

[0039] In other embodiments, the handle and the fixing plate are fixedly connected, one end of the injection tube is connected to the fixing plate through a flexible material, and the injection tube and the handle are placed side by side in parallel.

[0040] When certain conditions are insufficient, such as when the cap 6 on the side of the injection tube 3 near the handle 2 is missing or damaged, and the sealing effect cannot be guaranteed, the effect of this utility model cannot be achieved. In this case, as an improvement to the connection relationship between the handle 2, injection tube 3, and fixing plate 4 of the limiter 1 in the above embodiment, the specific improvement is as follows:

[0041] The handle 2 and the fixing plate 4 are directly fixedly connected, without needing to penetrate the injection tube 3;

[0042] The end of the injection tube 3 near the fixed plate 4 is sealed to the flexible material. The connection position of the injection tube 3 and the flexible material avoids blocking the channel opening near the fixed plate 4. The flexible material and the fixed plate 4 are sealed and fixedly connected. The injection tube 3 and the handle 2 are placed side by side in parallel.

[0043] When the liquid material inside the flexible soft bag 20 solidifies to form a solid molding material 25, the handle 2 and the injection tube 3 are used as supports to remove the flexible soft bag 20 and the solid molding material 25 inside it from the hole together for measuring various parameters.

[0044] This structure is used when the function of the cover on the side of the injection tube 3 near the handle 2 cannot be guaranteed. It achieves the auxiliary measurement function of the measuring device for drilling by adding flexible soft material, fixing plate 4 and sealing and fixing connection between injection tube 3.

[0045] In some embodiments, a through hole or stepped hole is provided near the handle connection of the injection tube to clean out residual solid material or other debris in the injection tube after the liquid material has solidified.

[0046] In this embodiment, the injection tube 3 of the limiter 1 has a through hole or a stepped hole near the connection of the handle 2. The through hole or stepped hole is connected to the handle 2 with a thread or clamp, or the handle 2 is passed through the through hole or stepped hole. After the liquid material is solidified and taken out from the hole, the solid molding material 25 is removed from the injection tube 3. There may be residual solid material or other debris in the injection tube 3. The residual solid material or other debris in the injection tube 3 can be easily cleaned out from the through hole or stepped hole.

[0047] In some embodiments, the injection tube is provided with a channel opening near the handle and near the fixing plate for the internal gas or liquid material to enter and exit when liquid material is injected into the resilient soft bag;

[0048] In this embodiment, the injection tube 3 of the limiter 1 has a channel opening near the handle 2 and near the fixing plate 4. When liquid material is injected into the flexible soft bag 20, the internal gas or liquid material enters and exits through the channel opening. When the channel opening near the handle 2 is used as the injection port, pressurized liquid material is injected from here and enters the flexible soft bag 20 through the channel opening near the fixing plate 4 on the injection tube 3. The pressurized liquid material gradually fills the flexible soft bag 20. When the channel opening near the handle 2 is used as the discharge port, liquid material is injected into the flexible soft bag 20 from other injection ports at the beginning, and the gas originally left in the flexible soft bag 20 is discharged from here. When the flexible soft bag 20 is full of liquid material, a portion of the liquid material will be discharged from the discharge port of the injection tube 3.

[0049] In some embodiments, the stretchability of the flexible material is not less than 50%;

[0050] In this embodiment, the elasticity of the flexible material is not less than 50%. The flexible material maintains its toughness when it is gradually stretched by the filling of the internal pressurized liquid material, so that the flexible soft bag 20 stretches and fills the space inside the hole, and the soft bag forms a shape consistent with the shape of the hole. Example 2:

[0051] This utility model provides an auxiliary measurement method for irregular boreholes in roadways with fractured and weak surrounding rock, based on the auxiliary measurement equipment for irregular boreholes described in any of Embodiment 1, including the following steps:

[0052] S10. Wrap the tough soft bag around the injection tube of the limiter and seal it on the fixing plate of the limiter.

[0053] In this step, the flexible soft bag 20 is wrapped around the injection tube 3 of the limiter 1, and the entire limiter 1 is made to pass through the flexible soft bag 20, so that the flexible soft bag 20 covers the injection tube 3 of the limiter 1. The channel opening of the injection tube 3 near the fixing plate 4 is wrapped inside the flexible soft bag 20 to ensure that when liquid is injected into the flexible soft bag 20, the liquid material will wrap around the injection tube 3, and the liquid material can be injected into the flexible soft bag 20 instead of directly into the hole. This avoids the injection tube 3 being outside the flexible soft bag 20 and affecting the matching degree between the shape formed by the liquid material during solidification and the actual shape inside the hole. The sealing and fixing end 21 of the flexible soft bag 20 is sealed and fixed to the fixing plate 4 of the limiter 1 to prevent the liquid material from leaking out from the fixing plate 4 when the liquid material is injected into the flexible soft bag 20. At the same time, it is ensured that the handle 2 is fixedly connected to the injection tube 3, the injection tube 3 to the fixing plate 4, and the fixing plate 4 to the limiter 5.

[0054] S20. Insert the limiter and the flexible soft bag fixed on the limiter into the hole with one end of the limiter plate facing the inside of the hole until the limiter plate reaches the designed position inside the hole.

[0055] In this step, after the limiter 1 and the flexible soft bag 20 are fixedly connected, the limiter 1 and the flexible soft bag 20 fixed on the limiter 1 are inserted into the hole with one end of the limiter plate 5 of the limiter 1 facing the inside of the hole until the limiter plate 5 of the limiter 1 reaches the designed position inside the hole. When the limiter plate 5 reaches the designed position inside the hole and can stably support it, liquid material is injected into the flexible soft bag 20.

[0056] In other embodiments, the designed position of the limiting plate 5 within the hole can be flexibly varied according to the actual situation inside the hole; it can be the bottom of the hole, or the middle or shallow part of the hole.

[0057] S30. Seal and connect the channel port of the injection tube near the limiter near the handle or the outlet / injection port of the tough soft bag to the output port of the external liquid material output device, and inject liquid material into the tough soft bag.

[0058] In this step, the channel opening of the injection tube 3 near the handle 2 is sealed and connected to the output port of the external liquid material output device. The channel opening of the injection tube 3 near the handle 2 is used as an injection port. At the same time, the outlet / injection port 22 of the tough soft bag 20 is contracted and fixed to the injection tube 3 of the limiter 1. At this time, one end of the outlet / injection port 22 of the tough soft bag 20 is used as an outlet to discharge the gas or liquid material inside the tough soft bag 20, leaving a certain gap for venting gas or discharging some liquid material from here. The external liquid material output device is turned on, and liquid material is injected into the injection tube 3, so that the tough soft bag 20 can gradually expand in volume under the pressure of the liquid material while maintaining its toughness, until the inside is filled with liquid material, so that the tough soft bag 20 stretches in the hole and gradually fills the space inside the hole.

[0059] In some other embodiments, one end of the outlet / inlet 22 of the flexible soft bag 20 is sealed and connected to the output port of the external liquid material output device. At the same time, the outlet / inlet 22 of the flexible soft bag 20 is contracted into the injection tube 3. The outlet / inlet 22 of the flexible soft bag 20 and the output port of the external liquid material output device are fixed together on the injection tube 3 of the limiter 1. The fixed position cannot cover the channel opening of the injection tube 3 near the handle 2. The outlet / inlet 22 of the flexible soft bag 20 is used as an injection port at this time, and the channel opening of the injection tube 3 near the handle 2 is used as an outlet to discharge the gas or liquid material in the flexible soft bag 20.

[0060] S40. When liquid material overflows from the outlet and the pressure of injected liquid material reaches the rated pressure, stop injecting liquid material and seal the outlet.

[0061] In this step, the injection process should not be stopped when venting air from the outlet or when liquid material has just been discharged. At this time, there may still be some space inside the cavity that is not filled with the soft bag and its internal liquid material. Once liquid material overflows from the outlet, continue injecting liquid material into the injection tube 3 to further increase the pressure inside the soft bag. This will expand the flexible soft bag 20 into the gaps inside the cavity, causing the soft bag to form a shape that matches the shape of the cavity. When the injected liquid material pressure reaches the rated pressure of 0.5 MPa, stop the injection process, seal the outlet without leaving any gaps, and wait for the liquid material to solidify. The solidification time should not exceed 1 hour. Due to the memory properties of the liquid material, after solidification, it will form a solid molding material 25 that matches the shape inside the cavity. Figure 4 The diagram shows a solid molding material 25 that forms a shape that matches the hole after solidification inside the hole.

[0062] S50. After the liquid material solidifies, an object that conforms to the shape inside the hole is formed.

[0063] In this step, after the liquid material solidifies, a solid molding material 25 object is formed that conforms to the shape inside the hole. This object conforms to the shape of the hole's internal space, whether it is regular, irregular, or cracked.

[0064] S60. Take out the limiter, the flexible soft bag, and the flexible object wrapped by the flexible soft bag from the hole and measure various parameters.

[0065] In this step, the limiter 1, the flexible soft bag 20, and the flexible object wrapped in the flexible soft bag 20 are removed from the hole, such as... Figure 5 The figure shown is a schematic diagram of the shape of the solid molding material 25 after it is removed from the hole. Then, various parameters of the solid molding material 25 are measured. By measuring the shape and other parameters of this flexible object, the corresponding shape, position, size and other parameters inside the hole can be obtained.

[0066] After the solid molding material 25 is used for measurement, it is removed from the limiter 1. At this time, a certain volume of solid material or other debris will remain in the injection tube 3 of the limiter 1, which is difficult to clean. At this time, remove the handle 2 of the limiter 1 and expose the through hole or stepped hole on the side of the injection tube 3 near the handle 2. Fluid or gas can be introduced into the injection tube 3 from either end of the injection tube 3 to flush it. Alternatively, a cleaning tool with an outer diameter smaller than the inner diameter of the through hole or stepped hole of the injection tube 3 and a length longer than the injection tube 3 can be inserted into the injection tube 3. By pushing or rotating, the solid objects in the injection tube 3 can be pushed, wrapped, or hooked out, thereby cleaning the injection tube 3 and restoring its unobstructed flow.

[0067] In some embodiments, step S30 of the measurement method further includes the step of: when injecting liquid material, the outlet / inlet of the tough soft bag contracts within the injection tube of the limiter, and a certain pressure is formed inside the tough soft bag by utilizing the airtightness of the tough soft bag and the contraction of the outlet / inlet; at the same time, the injection tube is used as a fixed base point to fix the tough soft bag and the output port of the external liquid material output device on the injection tube;

[0068] In this step, when injecting liquid material, the outlet / inlet 22 of the flexible soft bag 20 needs to be contracted to the injection tube 3 of the limiter 1. By utilizing the airtightness of the flexible soft bag 20 and the reduction of the contraction, pressure is formed inside the flexible soft bag 20, which discharges the gas and excess liquid material inside the soft bag. At the same time, the injection tube 3 serves as a fixed base point, fixing the outlet / inlet 22 of the flexible soft bag 20 and the output port of the external liquid material injection device to the injection tube 3, preventing the output port of the external liquid material injection device from slipping or being placed at an angle in other positions inside the drill hole, which would affect the shape formed after the liquid material solidifies.

[0069] In some embodiments, the pressure at which the liquid material is injected into the resilient soft bag in step S30 of the measurement method is less than 1 MPa.

[0070] In this step, material is injected into the injection tube 3 at a pressure of less than 1 MPa to ensure that a certain pressure is maintained inside the tough soft bag 20. This allows the tough soft bag 20 to gradually expand in volume under the pressure of the liquid material, while maintaining the toughness of the tough soft bag 20, until the inside of the tough soft bag 20 is filled with liquid material, allowing the tough soft bag 20 to extend inside the hole and gradually fill the space inside the hole.

[0071] In some embodiments, the liquid material in step S30 of the measurement method has memory properties and is composed of a single liquid or multiple liquids; the curing time is no more than 1 hour, and the solidified material after curing has elasticity, a strength of less than 10 MPa, and a compressibility of not less than 50%.

[0072] In this step, the liquid material is composed of multiple liquid components, and the curing time is no more than 1 hour. The solid molded material 25 after curing is elastic, with a strength of less than 10 MPa and a compression ratio of no less than 50%. It has memory properties and can restore its original shape when it was cured inside the hole after being removed from the hole.

[0073] In other embodiments, the liquid material in step S30 of the measurement method is composed of a single liquid or multiple liquids, and the curing time and the strength and compressibility parameters of the solidified material formed after curing can meet the above requirements.

[0074] Those skilled in the art will understand that implementing all or part of the processes in the above embodiments is possible.

[0075] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope of the claims.

Claims

1. An auxiliary measuring device for irregular drilling in roadways with fractured and weak surrounding rock, characterized in that: The device includes a limiter that can extend into an orifice and a resilient soft bag fixed to the limiter and wrapped around the injection tube of the limiter. The limiter includes a handle, an injection tube, a fixing plate, and a limiting plate. The limiting plate is located at the end of the limiter, and the fixing plate is fixed to the side of the limiting plate near the orifice. The injection tube is fixed to the fixing plate and communicates with the internal space of the resilient soft bag. A limiter fixing assembly is installed on the outer wall of the orifice. One end of the resilient soft bag near the fixing plate of the limiter is set as a sealing fixing end, and the sealing fixing end is fixed to the fixing plate of the limiter; The port exposed outside the borehole is designated as the discharge / injection port.

2. The irregular drilling auxiliary measuring equipment according to claim 1, characterized in that: The fixing plate of the limiter is connected to the limiting plate of the limiter by bolts or buckles.

3. The irregular drilling auxiliary measuring equipment according to claim 1, characterized in that: One end of the injection tube is fixedly connected to the handle, and the other end is fixedly connected to the fixing plate.

4. The irregular drilling auxiliary measuring equipment according to claim 1, characterized in that: One end of the injection tube that extends into the drill hole is connected to the fixing plate. The end of the injection tube near the handle has a cap. The injection tube and the cap are sealed together by threads or snaps. The handle passes through the cap and is sealed together at the interface with the cap. The handle passes through the injection tube and is fixedly connected to the fixing plate.

5. The irregular drilling auxiliary measuring equipment according to claim 1, characterized in that: The handle and the fixing plate are fixedly connected. One end of the injection tube is connected to the fixing plate through a flexible material. The injection tube and the handle are placed side by side in parallel.

6. The irregular drilling auxiliary measuring equipment according to claim 1, characterized in that: The injection tube has a through hole or stepped hole near the handle connection.

7. The irregular drilling auxiliary measuring equipment according to claim 1, characterized in that: The injection tube has a channel opening near the handle and near the fixing plate.

8. The irregular drilling auxiliary measuring equipment according to claim 1, characterized in that: The limiter fixing assembly supports the limiter with the handle or the injection tube as the fulcrum.

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