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

Abstract

The embodiment of the invention discloses a broken weak surrounding rock roadway irregular drilling auxiliary measurement device and method, and relates to the technical field of roadway drilling measurement. The hole measuring equipment comprises a 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. 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 invention, 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] The invention relates to the technical field of irregular borehole measurement in broken soft surrounding rock tunnels, and in particular to broken soft holes, holes with irregular shapes or holes with large cracks, and can accurately obtain complex parameters in the holes for measurement. Background Art

[0002] At present, the internal shape and other parameters of the borehole in the surrounding rock tunnel can be measured by general depth and diameter measurement tools, laser, and radar tools. However, for the broken and weak surrounding rock tunnel, the surrounding rock of the tunnel usually has lower strength and higher porosity, poor cementation, and may be affected by structural surface cutting and weathering. During the drilling process, due to manual excavation, the rock mass around the borehole is affected by cutting and drill rod vibration, and the stress state changes, resulting in irregular borehole forming, and the shape, size, surface quality, concentricity, verticality or direction parameters of the borehole deviate from the expected design, or there are irregular large cracks in the borehole. The existing technology can only obtain the basic depth, diameter and basic hole shape parameters of the borehole, while it is difficult to accurately measure the detailed shape and other parameters of the hole including cracks when measuring the internal parameters of the borehole in the broken and weak surrounding rock. Summary of the invention

[0003] In view of this, the present invention provides an auxiliary measurement equipment and method for irregular boreholes in broken and weak surrounding rock tunnels. Compared with other measurement equipment in the above-mentioned prior art, the internal shape structure parameters of boreholes with irregular shapes, boreholes with large cracks and other boreholes with complex internal shapes, as well as other conventional hole parameters, can be obtained, thereby improving the accuracy of hole parameter measurement.

[0004] In order to achieve the above object, the present invention adopts the following technical scheme: In the first aspect, the present invention provides an auxiliary measurement equipment for irregular drilling in a broken soft rock tunnel, comprising: a stopper that can be extended into the hole and a tough soft bag fixed on the stopper and wrapped on the injection tube of the stopper, the stopper comprising a handle, an injection tube, a fixing plate and a stopper, the stopper being at the end of the stopper, the fixing plate being fixed on a side of the stopper close to the hole; the injection tube being fixed on the fixing plate and communicating with the internal space of the tough soft bag, and being used for the entry and exit of gas or liquid materials; The tough soft bags are all made of flexible materials to form an integrated structure with a central hole. The two ports are different in form and function. One port close to the fixing plate of the limiter is designed as a sealed fixing end, which is fixed to the fixing plate of the limiter; the port exposed outside the drilled hole is designed as a discharge port / injection port, which is used for discharging internal gas or liquid material from here when liquid material is injected into the tough soft bag, or injecting liquid material into the tough soft bag from here; the tough soft bag uses its toughness and ductility to expand and stretch in the hole and its gap under the filling of pressurized liquid material, forming a shape that matches the shape inside the hole.

[0005] Optionally, the fixing plate of the limiter is connected to the limiting plate of the limiter by bolts or buckles, which are used to seal and fix the tough soft bag to prevent the liquid material used for curing and molding from leaking out during liquid injection.

[0006] Optionally, one end of the injection tube is fixedly connected to the handle, and the other end is fixedly connected to the fixing plate.

[0007] Optionally, one end of the injection tube extending into the drilled hole is connected to the fixed plate, and a cover is provided at the end of the injection tube close to the handle. The injection tube and the cover are sealed with threads or snaps, and the handle passes through the cover and is sealed with the cover at the interface. The handle passes through the injection tube and is fixedly connected to the fixed plate.

[0008] Optionally, the handle is fixedly connected to the fixing plate, one end of the injection tube is connected to the fixing plate via a bendable soft material, and the injection tube and the handle are placed side by side and in parallel.

[0009] Optionally, a through hole or a stepped hole is provided near the handle connection of the injection tube, which is used to clean out residual solid material or other debris in the injection tube after the liquid material solidifies.

[0010] Optionally, the injection tube is provided with passage openings near the handle and near the fixing plate, for allowing internal gas or liquid material to enter and exit when liquid material is injected into the tough soft bag.

[0011] Optionally, the expansion and contraction rate of the flexible material is not less than 50%.

[0012] In a second aspect, the present invention provides an irregular drilling auxiliary measurement method for a broken and weak surrounding rock tunnel, based on any irregular drilling auxiliary measurement equipment described in the first aspect, comprising the steps of: Wrap the tough soft bag outside the injection pipe of the stopper and seal it on the fixing plate of the stopper; The stopper and the flexible soft bag fixed on the stopper are inserted into the hole with one end of the stopper plate facing the inside of the hole until the stopper plate reaches the designed position in the hole; The channel opening of the injection tube close to the stopper and close to one end of the handle or the discharge port / injection port of the flexible soft bag is sealed and connected to the output port of an external liquid material output device, and the liquid material is injected into the flexible soft bag; When the liquid material overflows from the discharge port and the pressure of the injected liquid material reaches the rated pressure, the injection of the liquid material is stopped and the discharge port is sealed; Wait for the liquid material to solidify and form an object that matches the shape of the hole; The stopper, the tough soft bag and the flexible object wrapped by the tough soft bag are taken out from the hole, and various parameters are measured.

[0013] Optionally, the measurement method also includes: when injecting liquid material, the discharge port / injection port of the flexible soft bag shrinks to the injection tube of the limiter, and a certain pressure is formed in the flexible soft bag by utilizing the airtightness of the flexible soft bag and the shrinkage of the discharge port / injection port; at the same time, the injection tube is used as a fixed base point to fix the output port of the flexible soft bag and the external liquid material output device on the injection tube.

[0014] Optionally, in the measuring method step, the pressure of the liquid material injected into the tough soft bag is less than 1 MPa.

[0015] Optionally, the liquid material in the measuring method step has memory and is composed of a single liquid material or multiple liquid materials; the curing time is no more than 1 hour, and the solid molding material after curing has elasticity, a strength of less than 10 MPa, and a compression rate of no less than 50%.

[0016] The present invention provides an auxiliary measurement equipment and method for irregular boreholes in broken and weak surrounding rock tunnels. The measurement equipment can be extended into the boreholes in broken and weak surrounding rock tunnels, especially the boreholes with irregular borehole shapes or large cracks. The flexibility and ductility of the tough soft bag are utilized to fill the borehole with liquid material injected into the tough soft bag under certain pressure conditions, so that the tough soft bag expands and stretches in the hole and its gaps to form a shape that conforms to the shape of the hole including the gaps. After the liquid material solidifies to form a solid molding material, the limiter, the tough soft bag and the solid molding material wrapped therein are then taken out of the borehole to measure various parameters, thereby obtaining various detailed parameters inside the borehole of the broken and weak surrounding rock. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A schematic diagram of the overall structure of the stopper and the tough soft bag provided in the first embodiment of the present invention placed in the hole; Figure 2 It is a structural diagram of the limiter and a schematic diagram of the relative positions of the fixing plate and the limit plate in the first embodiment of the present invention; Figure 3 This is a schematic diagram of the structure of a tough soft bag in Embodiment 1 of the present invention; Figure 4 It is a schematic diagram of injecting liquid material into the tough soft bag and waiting for the solid material to solidify to form a solid molding material in the hole in accordance with the shape of the hole in the first embodiment of the present invention; Figure 5 This is a schematic diagram of the shape of the solid molding material after being taken out of the hole in Example 1 of the present invention; Figure 6 It is a schematic diagram of the structure after the improvement in the second embodiment of the present invention.

[0018] In the figure: 1. limiter; 2. handle; 3. injection tube; 4. fixing plate; 5. limiter plate; 6. cover; 20. tough soft bag; 21. sealed fixed end of the tough soft bag; 22. discharge port / injection port of the tough soft bag; 25. solid molding material. DETAILED DESCRIPTION

[0019] The embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0020] It should be clear that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention. Embodiment 1:

[0021] The present invention provides an auxiliary measurement equipment for irregular drilling in a broken weak surrounding rock tunnel, comprising: a stopper that can be extended into the hole and a tough soft bag fixed on the stopper and wrapped on the injection tube of the stopper, the stopper comprising a handle, an injection tube, a fixing plate and a stopper, the stopper being at the end of the stopper, the fixing plate being fixed on a side of the stopper close to the hole; the injection tube being fixed on the fixing plate and communicating with the inner space of the tough soft bag, and being used for the entry and exit of gas or liquid materials; In this embodiment, the measuring equipment includes: a stopper 1 that can be inserted into the hole and a tough soft bag 20 fixed on the stopper 1 and wrapped around the injection tube 3. The stopper 1 and the tough soft bag 20 are fixed to form a whole that can be inserted into the drilled hole; the stopper 1 includes a stopper plate 5, a fixing plate 4, an injection tube 3, and a handle 2. Figure 1 , Figure 2The limit plate 5 is at the end of the limiter 1, and is used to contact and fix at the designed position of the hole, serving as the base point for the positioning and fixing function of the limiter 1; the fixing plate 4 is fixed on the side of the limiter plate 5 close to 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 communicated with the internal space of the tough soft bag 20, and is used to inject liquid material into the tough soft bag 20 under pressure or discharge the liquid material or gas in the tough soft bag 20; In some embodiments, the tough soft bags are made of flexible materials to form an integrated structure with a central opening, and the two ports thereof are different in form and function, wherein a port close to the fixing plate of the stopper is designed as a sealing fixing end, and the sealing fixing end is fixed to the fixing plate of the stopper; a port exposed outside the drill hole is designed as a discharge port / injection port, and is used for discharging internal gas or liquid material from this port when injecting liquid material into the tough soft bag, or injecting liquid material into the tough soft bag from this port; the tough soft bag uses its toughness and ductility to expand and stretch in the hole and its gap under the filling of pressurized liquid material, and forms a shape that conforms to the shape inside the hole; In this embodiment, if Figure 3 As shown, the tough soft bag 20 is made of an integrated flexible material, and the two ports are connected in the middle. The two ports have different shapes and functions. The port close to the fixing plate 4 is designed as a sealed fixed end 21, and the sealed fixed end 21 is fixed on the fixing plate 4; the port exposed outside the drilled hole is a discharge port / injection port 22. When this port is used as a discharge port, the gas or liquid material in the tough soft bag 20 is discharged from this port. When the tough soft bag 20 is filled with liquid material, part of the liquid material will be discharged from this port; when this port is used as an injection port, the external liquid will be discharged from this port. The output port of the liquid material output device is connected here, and liquid material is injected into the tough soft bag 20; when the liquid material is injected into the tough soft bag 20, due to the pressure of the injected liquid material and the flexibility and ductility of the tough soft bag 20, the tough soft bag 20 forms a shape in the hole that matches the internal shape of the hole. The liquid material wrapped in the tough soft bag 20 will form a highly flexible solid molding material 25 after solidification. The shape of the solid molding material 25 includes details such as irregular shapes and gaps in the hole, which is convenient for measuring detailed parameters in the hole.

[0022] In some embodiments, the fixing plate of the stopper is connected to the limiting plate of the stopper by bolts or buckles, and is used to seal and fix the tough soft bag to prevent the liquid material used for curing and molding from leaking out during liquid injection; In this embodiment, the fixing plate 4 and the limiting plate 5 are connected by bolts or buckles. 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 limiter 1 is conveniently removed from the limiter 1, and only the limiter 1 and the solid molding material 25 attached thereto are measured; at the same time, the fixing plate 4 and the tough soft bag 20 can be sealed and connected, and when the tough soft bag 20 is fixed, the liquid material used for molding is prevented from leaking out during liquid injection; the limiting plate 5 of the limiter 1 is used to limit the expansion of the tough soft bag 20 into the deep part of the drill hole, and the liquid material can block the tough soft bag 20 after solidification, and cooperate with the handle 2 exposed outside the drill hole to take the solid molding material 25 of the drilling model formed in the tough soft bag 20 out of the drill hole. Under the premise that it does not affect the use, the handle 2 fixing device is added in a position near the drill hole where it does not affect the use, so that the handle 2 remains parallel to the central axis of the drill hole or slightly inclined but not in contact with the inside of the drill hole, so as to prevent the handle 2 and the injection tube 3 from being close to the inner wall of the drill hole under the action of gravity, affecting the shape of the liquid material in the tough soft bag 20 when it solidifies, and causing distortion of the parameter data measured in the hole.

[0023] 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; In this embodiment, the connection relationship between the injection tube 3, the handle 2, and the fixed plate 4 is: one end of the injection tube 3 is connected to the handle 2, and the other end is connected to the fixed 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 fixed plate 4 are fixed to the fixed plate 4 by threads or clamps. The injection tube 3 is between the handle 2 and the fixed plate 4, and the handle 2 and the fixed plate 4 are not in direct contact, which saves 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, which saves the material of the injection tube 3.

[0024] In other embodiments, one end of the injection tube extending into the drilled hole is connected to the fixing plate, and a cover is provided at one end of the injection tube close to the handle. The injection tube and the cover are sealed and connected by threads or buckles. The handle passes through the cover and is sealed and connected to the cover at the interface. The handle passes through the injection tube and is fixedly connected to the fixing plate. When liquid material is injected into a large-sized hole, the weight of the solid molding material 25 may be relatively large, and the connection strength between the handle 2 and the injection tube 3 may not be sufficient to support the removal of the solid molding material 25 from the hole; as an improvement to the connection relationship between the handle 2, the injection tube 3, and the fixing plate 4 of the stopper 1 in the above embodiment, the maximum weight of the solid molding material 25 that conforms to the shape of the hole and can be supported by the stopper 1 is increased. The specific improvements are as follows: The handle 2 of the stopper 1 is made of other materials with better bending resistance or has a larger diameter to enhance its bending resistance; The end of the injection tube 3 extending into the drilled hole is connected to the fixing plate 4, and the end of the injection tube 3 close to the handle 2 is provided with a cover 6, and the injection tube 3 and the cover 6 are sealed by threads or buckles, and the cover 6 is detachable, and at the same time, it is ensured that the cover 6 and the injection tube 3 are sealed, and the side of the injection tube 3 close to the handle 2 is sealed when the handle 2 passes through the injection tube 3; The handle 2 passes through the cover 6 of the injection tube 3 and is sealed 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 stopper 1; a gap is left between the handle 2 and the injection tube 3 to allow liquid material or gas to pass through the gap during injection; When the handle 2 has a larger diameter, the injection pipe 3 also needs to be selected with a correspondingly increased inner diameter, which will increase costs to a certain extent. 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, so as to support the solid molding material 25 formed in the hole of a larger volume. The tough soft bag 20 and the solid molding material 25 wrapped therein are taken out of the hole together to measure various parameters.

[0025] In other embodiments, the handle is fixedly connected to the fixing plate, one end of the injection tube is connected to the fixing plate via a bendable soft material, and the injection tube and the handle are placed side by side and in parallel; When some conditions are insufficient, for example, when the cover 6 on the side of the injection tube 3 close to the handle 2 is lost or damaged and the sealing effect cannot be guaranteed, the effect of the present invention cannot be achieved; in this case, as an improvement to the connection relationship between the handle 2, the injection tube 3 and the fixing plate 4 of the limiter 1 in the above embodiment, the specific improvements are as follows: The handle 2 and the fixing plate 4 are directly fixedly connected, and it is not necessary to penetrate the injection pipe 3; The injection tube 3 is sealed and connected to the bendable soft material at one end near the fixed plate 4, and the connection position between the injection tube 3 and the bendable soft material avoids blocking the passage opening near the fixed plate 4. The bendable soft material and the fixed plate 4 are sealed and fixedly connected, and the injection tube 3 and the handle 2 are placed side by side and in parallel. When the liquid material in the tough soft bag 20 solidifies to form the solid molding material 25, the handle 2 and the injection tube 3 are used as supports to take the tough soft bag 20 and the solid molding material 25 contained therein out of the hole together to measure various parameters; This structure is used when the cover function on the side of the injection tube 3 close to the handle 2 cannot be guaranteed, and the auxiliary measurement function of the measuring device on the drilling is realized by adding a bendable soft material and a sealed fixed connection between the fixing plate 4 and the injection tube 3.

[0026] In some embodiments, a through hole or a stepped hole is provided near the connection of the handle in the injection tube, which is used to clean out the residual solid material or other debris in the injection tube after the liquid material solidifies; In this embodiment, a through hole or a stepped hole is left at the injection tube 3 of the limiter 1 near the connection with the handle 2, and the through hole or the stepped hole is connected to the handle 2 with a thread or a clamp or the handle 2 is passed through the through hole or the 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, residual solid material or other debris may remain in the injection tube 3, and the residual solid material in the injection tube 3 or other debris in the pipeline can be conveniently cleaned out from the through hole or the stepped hole.

[0027] In some embodiments, the injection tube is provided with passage openings near the handle and near the fixing plate, for allowing internal gas or liquid material to enter and exit when liquid material is injected into the tough soft bag; In this embodiment, the injection tube 3 of the limiter 1 has passage openings near the handle 2 and near the fixed plate 4. When liquid material is injected into the flexible soft bag 20, the internal gas or liquid material enters and exits from the passage openings; when the passage opening near the handle 2 is used as the injection opening, pressurized liquid material is injected from here, and passes into the flexible soft bag 20 from the passage opening near the fixed plate 4 on the injection tube 3, and the pressurized liquid material gradually fills the flexible soft bag 20; when the passage opening near the handle 2 is used as the discharge opening, liquid material is injected into the flexible soft bag 20 from other injection openings at the beginning, and the gas originally remaining in the flexible soft bag 20 is discharged from here; when the flexible soft bag 20 is full of liquid material, a part of the liquid material will be discharged from the discharge opening of the injection tube 3.

[0028] In some embodiments, the expansion ratio of the flexible material is not less than 50%; In this embodiment, the expansion and contraction rate of the flexible material is not less than 50%. The tough material maintains toughness when it is gradually stretched by the internal pressurized liquid material, so that the tough soft bag 20 stretches in the hole and fills the space in the hole, so that the soft bag forms a shape consistent with the shape of the hole. Embodiment 2:

[0029] The present invention provides an irregular drilling auxiliary measurement method for a broken and weak surrounding rock tunnel, based on any irregular drilling auxiliary measurement equipment described in Embodiment 1, comprising the following steps: S10, wrapping the tough soft bag outside the injection pipe of the limiter and sealing and fixing it on the fixing plate of the limiter; In this step, the tough soft bag 20 is wrapped outside the injection tube 3 of the limiter 1, and the limiter 1 is integrally penetrated through the tough soft bag 20, so that the tough soft bag 20 wraps the injection tube 3 part of the limiter 1; the channel opening of the injection tube 3 near the fixed plate 4 should be wrapped in the tough soft bag 20 to ensure that when liquid is injected into the tough soft bag 20, the liquid material will wrap the injection tube 3, and the liquid material can be injected into the tough soft bag 20 instead of directly injected into the hole, so as to avoid the injection tube 3 outside the tough soft bag 20 affecting the shape formed when the liquid material solidifies and the matching degree of the actual shape in the hole; the sealed fixed end 21 of the tough soft bag 20 is sealed and fixed on the fixed plate 4 of the limiter 1 to avoid the liquid material leaking from the fixed plate 4 when the liquid material is injected into the tough soft bag 20; at the same time, ensure that the handle 2 and the injection tube 3, the injection tube 3 and the fixed plate 4, and the fixed plate 4 and the limit plate 5 are fixedly connected.

[0030] S20, extending the stopper and the flexible soft bag fixed on the stopper as a whole into the hole with one end of the stopper plate of the stopper facing the inside of the hole, until the stopper plate of the stopper reaches the designed position in the hole; In this step, after the stopper 1 and the tough soft bag 20 are fixedly connected, the stopper 1 and the tough soft bag 20 fixed on the stopper 1 are inserted into the hole as a whole, with one end of the stopper plate 5 of the stopper 1 facing the inside of the hole, until the stopper plate 5 of the stopper 1 reaches the designed position in the hole. When the stopper plate 5 reaches the designed position in the hole and can stably support it, liquid material is injected into the tough soft bag 20. In other embodiments, the designed position where the limiting plate 5 reaches in the hole is flexibly changed according to the actual situation in the hole, and can be the bottom of the hole, or the middle or shallow part of the hole.

[0031] S30, sealingly connecting the channel opening of the injection tube close to the stopper and close to one end of the handle or the discharge port / injection port of the flexible soft bag to the output port of an external liquid material output device, and injecting liquid material into the flexible soft bag; In this step, the channel opening of the injection tube 3 close to the limiter 1 and the end of the handle 2 is sealed and connected with the output port of the external liquid material output device; the channel opening of the injection tube 3 close to the handle 2 is used as the injection port at this time; at the same time, the discharge port / injection port 22 of the tough soft bag 20 is shrunk and fixed on the injection tube 3 of the limiter 1, and at this time, one end of the discharge port / injection port 22 of the tough soft bag 20 is used as the discharge port to discharge the gas or liquid material in the tough soft bag 20, and a certain gap is reserved for exhausting gas or discharging part of the liquid material from here; the external liquid material output device is turned on, and liquid material is started to be 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 in the hole; In the steps of other embodiments, one end of the discharge port / injection port 22 of the flexible soft bag 20 is sealed and connected to the output port of an external liquid material output device, and at the same time, the discharge port / injection port 22 of the flexible soft bag 20 is retracted to the injection tube 3, and the discharge port / injection port 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, and the fixed position cannot cover the channel opening of the injection tube 3 close to the handle 2; the discharge port / injection port 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 close to the limiter 1 close to the handle 2 is used as a discharge port to discharge the gas or liquid material in the flexible soft bag 20.

[0032] S40, when the liquid material overflows from the discharge port and the pressure of the injected liquid material reaches the rated pressure, stop injecting the liquid material and seal the discharge port; In this step, the injection cannot be stopped when the outlet is exhausted or the liquid material has just been discharged. At this time, there may still be some space inside the hole that has not been filled with the soft bag and the liquid material inside it. When the outlet overflows the liquid material, the liquid material is continuously injected into the injection tube 3 to increase the pressure inside the soft bag, expand the tough soft bag 20 into the gap in the hole, and form the soft bag into a shape that matches the shape of the hole. When the pressure of the injected liquid material reaches the rated pressure of 0.5MPa, the injection is stopped, the outlet is sealed without leaving any gaps, and the liquid material is waited for to solidify. The solidification time is no more than 1 hour. Since the liquid material has memory, a solid molding material 25 that matches the shape of the hole is formed after it solidifies. Figure 4 The figure shows a schematic diagram of a solid molding material 25 that is formed in the hole after solidification in the hole and conforms to the shape of the hole.

[0033] S50, waiting for the liquid material to solidify to form an object that matches the shape of the inside of the hole; In this step, after the liquid material solidifies, a solid molding material 25 object that conforms to the shape of the interior of the hole is formed. This object conforms to the shape of the space inside the regular or irregular hole or the hole with cracks.

[0034] S60, taking out the stopper, the tough soft bag and the flexible object wrapped in the tough soft bag from the hole, and measuring various parameters; In this step, the stopper 1, the tough soft bag 20 and the flexible object wrapped in the tough soft bag 20 are taken out of the hole. Figure 5 As shown, it is a schematic diagram of the shape of the solid molding material 25 after being taken out of the hole, and then various parameters of the solid molding material 25 are measured. By measuring the shape and other parameters of this flexible object, various parameters such as the corresponding shape, position, size, etc. in the hole can be obtained; When the solid molding material 25 is removed from the limiter 1 after measurement and use, 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, the handle 2 of the limiter 1 is removed to expose the through hole or stepped hole on the side of the injection tube 3 close to the handle 2. Liquid or gas is introduced into the injection tube 3 of the limiter 1 from any channel opening at both ends of the injection tube 3 to flush it, or a clearing 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 length of the injection tube 3 is inserted into the injection tube 3, and the solid objects in the injection tube 3 are pushed, wrapped or hooked out by pushing or rotating, thereby cleaning the injection tube 3 and restoring its smoothness.

[0035] In some embodiments, the measurement method step S30 further includes the following steps: when injecting liquid material, the discharge port / injection port of the flexible soft bag is contracted to the injection pipe of the stopper, and a certain pressure is formed in the flexible soft bag by utilizing the tightness of the flexible soft bag and the contraction of the discharge port / injection port; and at the same time, the injection pipe is used as a fixed base point to fix the output port of the flexible soft bag and the external liquid material output device on the injection pipe; In this step, when injecting liquid material, it is necessary to shrink the discharge port / injection port 22 of the flexible soft bag 20 to the injection tube 3 of the limiter 1, and utilize the airtightness of the flexible soft bag 20 and the reduction of the shrinkage port to form pressure in the flexible soft bag 20 to discharge the gas and excess liquid material in the soft bag; at the same time, the injection tube 3 is used as a fixed base point to fix the discharge port / injection port 22 of the flexible soft bag 20 and the output port of the external liquid material injection equipment on the injection tube 3 to prevent the output port of the external liquid material injection equipment from slipping or being placed obliquely at other positions in the drill hole, which affects the shape formed after the liquid material is solidified.

[0036] In some embodiments, the pressure of injecting the liquid material into the tough soft bag in step S30 of the measuring method is less than 1 MPa. 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 in the tough soft bag 20, so that the tough soft bag 20 can 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 stretch in the hole and gradually fill the space in the hole.

[0037] In some embodiments, the liquid material in step S30 of the measuring method has memory and is composed of a single liquid material or multiple liquid materials; the solidification time is no more than 1 hour, and the solidified solid molding material has elasticity, a strength of less than 10 MPa, and a compression rate of no less than 50%; In this step, the liquid material is composed of multiple liquid materials, and the solidification time is no more than 1 hour. The solidified solid molding material 25 has elasticity, a strength of less than 10MPa after solidification, and a compression rate of no less than 50%; it has memory, and after being taken out of the hole after solidification, it can restore the original shape when solidified in the hole; In other embodiments, the liquid material in step S30 of the measuring method is composed of a single liquid material or multiple liquid materials, and the solidification time and the strength and compression rate parameters of the solid molding material formed after solidification can meet the above requirements.

[0038] Those skilled in the art can understand that all or part of the processes in the above-mentioned embodiment methods are implemented. The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed by the present invention should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. An irregular drilling auxiliary measurement equipment for broken and weak surrounding rock tunnels, characterized by: It includes a stopper that can be extended into the hole and a tough soft bag fixed on the stopper and wrapped on the injection tube of the stopper, the stopper includes a handle, an injection tube, a fixing plate and a stopper plate, the stopper plate is at the end of the stopper, and the fixing plate is fixed on the side of the stopper plate close to the hole; the injection tube is fixed on the fixing plate and communicates with the internal space of the tough soft bag, and is used for the entry and exit of gas or liquid materials; The tough soft bags are all made of flexible materials to form an integrated structure with a central hole. The two ports are different in form and function. One port close to the fixing plate of the limiter is designed as a sealed fixing end, which is fixed to the fixing plate of the limiter; the port exposed outside the drilled hole is designed as a discharge port / injection port, which is used for discharging internal gas or liquid material from here when liquid material is injected into the tough soft bag, or injecting liquid material into the tough soft bag from here; the tough soft bag uses its toughness and ductility to expand and stretch in the hole and its gap under the filling of pressurized liquid material, forming a shape that matches the shape inside the hole.

2. The irregular drilling auxiliary measurement 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, and is used to seal and fix the tough soft bag to prevent the liquid material used for curing and molding from leaking out during liquid injection.

3. The irregular drilling auxiliary measurement 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 measurement equipment according to claim 1, characterized in that: The end of the injection tube extending into the drilled hole is connected to the fixed plate, and a cover is provided at the end of the injection tube close to the handle. The injection tube and the cover are sealed and connected by threads or snaps. The handle passes through the cover and is sealed and connected to the cover at the interface. The handle passes through the injection tube and is fixedly connected to the fixed plate.

5. The irregular drilling auxiliary measurement equipment according to claim 1, characterized in that: The handle is fixedly connected to the fixing plate, one end of the injection tube is connected to the fixing plate via a bendable soft material, and the injection tube and the handle are placed side by side and in parallel.

6. The irregular drilling auxiliary measurement equipment according to claim 1, characterized in that: A through hole or a stepped hole is provided near the handle connection of the injection tube, which is used to clean out residual solid materials or other debris in the injection tube after the liquid material solidifies.

7. The irregular drilling auxiliary measurement equipment according to claim 1, characterized in that: The injection tube is provided with passage openings near the handle and near the fixing plate, which are used for the internal gas or liquid material to enter and exit when the liquid material is injected into the tough soft bag.

8. The irregular drilling auxiliary measurement equipment according to claim 1, characterized in that: The expansion and contraction rate of the flexible material is not less than 50%.

9. An irregular drilling auxiliary measurement method for broken and weak surrounding rock tunnels, characterized by: Based on the irregular drilling auxiliary measurement equipment according to any one of claims 1 to 8, the method comprises the steps of: Wrap the tough soft bag outside the injection pipe of the stopper and seal it on the fixing plate of the stopper; The stopper and the flexible soft bag fixed on the stopper are inserted into the hole with one end of the stopper plate facing the inside of the hole until the stopper plate reaches the designed position in the hole; The channel opening of the injection tube close to the stopper and close to one end of the handle or the discharge port / injection port of the flexible soft bag is sealed and connected to the output port of an external liquid material output device, and the liquid material is injected into the flexible soft bag; When the liquid material overflows from the discharge port and the pressure of the injected liquid material reaches the rated pressure, the injection of the liquid material is stopped and the discharge port is sealed; Wait for the liquid material to solidify and form an object that matches the shape of the hole; The stopper, the tough soft bag and the flexible object wrapped by the tough soft bag are taken out from the hole, and various parameters are measured.

10. The irregular drilling auxiliary measurement method for broken and weak surrounding rock tunnels according to claim 9 is characterized by: When injecting liquid material, the discharge port / injection port of the flexible soft bag is contracted to the injection tube of the limiter, and a certain pressure is formed in the flexible soft bag by utilizing the airtightness of the flexible soft bag and the contraction of the discharge port / injection port; at the same time, the injection tube is used as a fixed base point to fix the output port of the flexible soft bag and the external liquid material output device on the injection tube.

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