One-time well completion blasting construction process

Abstract

The invention relates to the technical field of well completion blasting construction, in particular to a one-time well completion blasting construction process which comprises the following steps: S1, investigating geological conditions of a shaft location in detail, and designing a shaft according to geological data and engineering requirements; s2, according to design requirements, the positions and the number of drilled holes are reasonably arranged, and it is ensured that the shape of a shaft after blasting is regular; s3, according to the rock property, the shaft diameter and the drilling depth parameters, the explosive loading amount of each drilling hole is calculated, and an explosive loading density method is adopted for explosive loading; s4, after charging, a drilling hole opening is blocked by a blocking device, and explosion gas is prevented from leaking; and S5, designing a detonating network, and starting a detonating device according to a preset detonating sequence for blasting. According to the device, through the arrangement of the impact positioning assembly, the situation that potential safety hazards are caused by gas leakage generated by blasting in a drill hole due to the fact that the blocking box is separated from the drill hole under the blasting effect is avoided.

Description

Technical Field

[0001] The invention relates to the field of well-forming blasting construction, in particular to a one-time well-forming blasting construction process. Background Art

[0002] The one-time well-forming blasting construction technology is an efficient wellbore construction method. It forms the wellbore through a one-time blasting, which greatly shortens the construction period and improves the construction efficiency. This technology is mainly used in mining, water conservancy, transportation and other fields.

[0003] The prior art discloses some invention patents in the field of well-forming blasting construction. The Chinese patent with application number CN202211094588.2 discloses a well-forming process of upward deep hole blasting. S1: Engineering geological survey to determine the location for deep hole well-forming; S2: Implementing the hole arrangement structure, the hole arrangement structure includes charge holes and empty holes, and the charge holes and empty holes are arranged alternately; S3: Implementing the charge structure, the charge structure is arranged in the charge hole; S4: Blasting well.

[0004] During a well blasting construction, in order to prevent the explosion gas leakage and cause safety hazards to the workers, it is usually necessary to seal the borehole. In the prior art, blocking materials (such as clay, sand) are usually used to block the borehole mouth. When the blocking materials (such as clay, sand) are used to block the borehole, if the explosion shock inside the borehole increases, the explosion gas shock inside the borehole will increase, causing the blocking materials (such as clay, sand) to be broken through by the explosion, posing a safety hazard to the workers. Summary of the invention

[0005] The purpose of the present invention is to solve the shortcomings of the prior art and to propose a one-time well-forming blasting construction process.

[0006] In a first aspect, the present invention provides a one-time well blasting construction process, comprising the following steps:

[0007] S1. Conduct a detailed investigation of the geological conditions of the wellbore location and design the wellbore based on geological data and engineering requirements;

[0008] S2. Arrange the location and quantity of drilling holes reasonably according to the design requirements to ensure that the wellbore has a regular shape after blasting;

[0009] S3. Calculate the charge amount for each borehole according to rock properties, wellbore diameter, and drilling depth parameters, and use the line charge density method for charging;

[0010] S4. After charging, use a plugging device to seal the borehole to prevent explosion gas leakage;

[0011] S5. Design the detonation network, start the detonation device according to the predetermined detonation sequence, and carry out blasting.

[0012] As an optional embodiment, the blocking device includes:

[0013] A blocking box is inserted into the borehole, and a fixed circular plate is fixed on the top of the blocking box;

[0014] A positioning assembly, installed between the fixed circular plate and the drilled hole, for positioning the blocking box;

[0015] An impact positioning assembly is installed between the blocking box and the drill hole, and is used to enhance the fixation of the blocking box when the explosion generates impact force;

[0016] The staff inserts the blocking box into the inside of the borehole, and then fixes the blocking box inside the borehole through the locking assembly to achieve preliminary positioning of the borehole, and then blasts the inside of the borehole. When blasting inside the borehole, if the impact force generated by the blasting exerts an impact on the blocking box, causing the blocking box to have a tendency to detach from the inside of the borehole, the impact positioning assembly located below the blocking box intercepts the impact force generated by the blasting, so that the impact force generated by the blasting acts on the impact positioning assembly. When the impact positioning assembly is impacted by the blasting, it uses its own mechanical force to enhance the force between the blocking box and the borehole, thereby enhancing the fixing effect of the blocking box, which is beneficial to avoid the blocking box detaching from the borehole under the action of the blasting, causing gas leakage generated by the blasting inside the borehole, causing safety hazards.

[0017] As an optional embodiment, the impact positioning assembly includes:

[0018] A plurality of sliding grooves are provided in a circular array on the inner wall of the blocking box;

[0019] A plurality of moving rods are arranged corresponding to the sliding grooves one by one and are horizontally slidably installed inside the corresponding sliding grooves, and a plurality of plug-in pins are fixed in a linear array on one side of all the moving rods facing the outside of the blocking box;

[0020] A plurality of groups of circular holes, one group of circular holes corresponding to one of the sliding grooves, the circular holes in the same group are arranged in a linear array and penetrate the interior of the sliding groove, and the circular holes are adapted to the plug pins;

[0021] A movable circular plate is slidably installed below the blocking box through a circular tube;

[0022] A plurality of second straight rods are arranged one by one corresponding to the moving rods and are vertically slidably mounted on the side walls of the corresponding moving rods, both ends of all the second straight rods are rotatably mounted with inclined rods, and one end of all the inclined rods facing away from the second straight rods is rotatably mounted with the first straight rod, the first straight rods located above are commonly fixed to the top of the inner wall of the blocking box, and the first straight rods located below are commonly fixed to the top of the movable circular plate;

[0023] When the impact force generated by the blasting acts on the movable circular plate, it pushes the movable circular plate to move upward. The upward movement of the movable circular plate pushes the first straight rod located below to move upward, and the top of the first straight rod pushes the inclined rod to move upward, thereby pushing the second straight rod to move upward and has a tendency to move toward the movable rod, thereby pushing the movable rod to drive the plug-in nail to move toward the inside of the sliding groove, so that the plug-in nail passes through the round hole and is inserted into the inside of the drilled hole, thereby generating a plug-in fixation between the plug-in nail and the drilled hole. Therefore, when the movable circular plate is subjected to the impact of the blasting and has a tendency to drive the plug-in box to detach from the inside of the drilled hole, the plug-in nail can be driven by the pushing action of the movable circular plate to generate a plug-in fixation between the drilled hole and the plug-in box, thereby helping to improve the stability of the plug-in box when the explosion occurs, thereby helping to avoid the safety hazard caused by the detachment of the plug-in box and the overflow of the blasting gas.

[0024] As an optional embodiment, the impact positioning assembly further includes:

[0025] The movable circular plate is a counterweight;

[0026] After the blasting is completed, under the action of gravity of the movable circular plate, the first straight rod can be driven to move downward, thereby driving the second straight rod to reset, thereby driving the positioning between the plugging box and the drill hole to be cancelled, thereby facilitating the removal of the plugging box.

[0027] As an optional embodiment, the impact positioning assembly further includes:

[0028] A fixed rod, fixed to the top of the movable circular plate;

[0029] A cross plug rod is sleeved on the top of the fixed rod, and a rotating disk is fixed after the top of the plugging box passes through the top of the plugging box;

[0030] A disc is vertically slidably sleeved on the outer wall of the cross-connecting rod;

[0031] A plurality of cross bars, arranged one by one corresponding to the second straight bars, and fixed on the corresponding side walls of the second straight bars;

[0032] A plurality of sliding contacts are arranged one by one corresponding to the cross bars and fixed to the corresponding ends of the cross bars;

[0033] A plurality of limiting grooves are arranged in a circumferential array inside the disc and are arranged corresponding to the sliding contacts, and the sliding contacts are slidably installed inside the corresponding limiting grooves;

[0034] When the connection between the drill hole and the plugging box is too tight, making it difficult to drive the second straight rod to reset under the gravity of the movable circular plate, the staff can rotate the rotating disk, which drives the fixed rod to rotate, and the fixed rod drives the circular plate slidably connected to it to rotate, and the circular plate drives the limiting groove to rotate, so that under the guidance of the limiting groove, the cross rod is driven to move in the direction of the circular plate, thereby driving the second straight rod to reset through the cross rod, so that the second straight rod can be reset by manual operation of the staff, thereby facilitating the removal of the plugging box.

[0035] As an optional embodiment, it also includes:

[0036] An air bag fixed to the side wall of the blocking box;

[0037] An inflation tube is inserted into the top of the blocking box, and the bottom of the inflation tube passes through the blocking box and is fixedly connected with the airbag;

[0038] A sealing cover, detachably fixedly mounted on the top of the inflation tube;

[0039] The staff can inflate the interior of the airbag through the inflation tube, so that the airbag expands after being inflated. The expanded airbag is squeezed between the drill hole and the plugging box, which is helpful to seal the gap between the drill hole and the plugging box, thereby helping to further avoid the safety hazard caused by the overflow of blasting gas generated by the blasting.

[0040] As an optional embodiment, it also includes:

[0041] An air pressure sensor is fixed to the bottom of the movable circular plate;

[0042] A baffle, fixed to the bottom of the movable circular plate and located below the air pressure sensor;

[0043] When blasting gas accumulates inside the borehole, if a large amount of blasting gas is generated, a large amount of blasting gas will leak out instantly when the plugging box is taken out. At the moment of taking out the plugging box, the gas will instantly overflow and generate impact force, which will cause safety hazards to the workers;

[0044] This embodiment of the present invention can solve the above problems. The specific implementation method is as follows: when a large amount of blasting gas accumulates inside the borehole, the air pressure inside the borehole increases, and the increased air pressure exerts a squeezing effect on the air pressure sensor, causing the air pressure sensor to detect the pressure. When the air pressure sensor detects the pressure, it identifies that the internal air pressure of the borehole has increased, that is, it identifies that blasting gas has accumulated inside the borehole, thereby prompting the staff to avoid removing the blocking box when gas accumulates inside the borehole, thereby causing a safety hazard.

[0045] Preferably, it also includes:

[0046] An exhaust pipe, the bottom of which passes through the movable circular plate, and the top of which passes through the fixed circular plate, wherein the upper part of the exhaust pipe is a hard pipe and the lower part is a soft pipe;

[0047] A plugging assembly is installed inside the exhaust pipe and is used to plug the exhaust pipe and exhaust when exhaust is required;

[0048] When the plugging component is in a closed state, the inside of the exhaust pipe is blocked, so that the generated gas will not overflow and cause safety hazards. When the plugging component is in an open state, the inside of the exhaust pipe is unobstructed, so that the generated gas can be discharged to relieve the pressure inside the borehole. After blasting, if it is necessary to dismantle the plugging box as soon as possible, the staff can connect the external storage component through the exhaust pipe, and then open the plugging component to allow the gas to be discharged and stored through the exhaust pipe, thereby relieving the pressure inside the borehole to facilitate subsequent construction and avoiding the overflow of blasting gas to cause safety hazards.

[0049] As an optional embodiment, the blocking component includes:

[0050] A fixing ring fixed to the hard pipe portion of the exhaust pipe;

[0051] A spring, fixed to the top of the fixing ring;

[0052] A first blocking block is fixed to the top of the spring and is slidably mounted with the exhaust pipe;

[0053] a third blocking block, fixed inside the exhaust pipe and located above the first blocking block;

[0054] A second blocking block is slidably mounted inside the exhaust pipe and is located between the first blocking block and the third blocking block;

[0055] The first blocking block, the second blocking block and the third blocking block are all provided with through holes therein, and the through holes of the first blocking block and the third blocking block are aligned, and the through holes of the second blocking block are misaligned with the through holes of the first blocking block;

[0056] A connecting rod is fixed to the top of the third blocking block, and the top passes through the exhaust pipe and then extends out to be fixed with a rotating block, and the rotating block is rotatably sealed with the top of the fixed circular plate;

[0057] When the exhaust pipe needs to be sealed, the through hole of the second blocking block is staggered with the through holes of the first blocking block and the third blocking block. When the internal air pressure of the drilled hole increases, the first blocking block is pushed upward under the action of the air pressure, thereby enhancing the extrusion force between the first blocking block, the second blocking block and the third blocking block, thereby enhancing the sealing effect between the first blocking block, the second blocking block and the third blocking block. When the exhaust pipe needs to be ventilated, the staff drives the connecting rod to rotate by rotating the rotating block. Due to the elastic force of the spring, the staff can push the rotating block to move downward to drive the second blocking block and the first blocking block to move downward, thereby facilitating the rotation of the second blocking block. The connecting rod drives the second blocking block to rotate, so that the through hole of the second blocking block is aligned with the through holes of the first blocking block and the third blocking block, so that the internal airflow of the exhaust pipe is unobstructed.

[0058] As an optional embodiment, it also includes:

[0059] A connecting pipe, the top of which is fixedly connected to the airbag and the bottom of which passes through the blocking box and the movable circular plate;

[0060] A one-way valve, fixed inside the connecting pipe;

[0061] When the internal air pressure of the borehole increases, the gas can flow unidirectionally into the airbag through the one-way valve inside the connecting pipe, so that the airbag expands under the action of air pressure, thereby enhancing the sealing effect between the borehole and the plugging box, which is conducive to further reducing the leakage of blasting gas.

[0062] Compared with the prior art, the present invention has the following beneficial effects:

[0063] The present invention arranges the impact positioning component so that the impact force generated by the blasting acts on the impact positioning component. When the impact positioning component is impacted by the blasting, the mechanical force of the impact positioning component increases the force between the blocking box and the borehole, thereby enhancing the fixing effect of the blocking box, which helps to avoid the blocking box from detaching from the borehole under the action of the blasting, causing gas leakage generated by the blasting inside the borehole, which may cause safety hazards. BRIEF DESCRIPTION OF THE DRAWINGS

[0064] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0065] Figure 2 The structure of the present invention after the overall section is schematically shown. Figure 1 .

[0066] Figure 3 For the present invention Figure 2 Schematic diagram of the enlarged structure at point A in the middle.

[0067] Figure 4 The structure of the present invention after the overall section is schematically shown. Figure 2 .

[0068] Figure 5 For the present invention Figure 4 Schematic diagram of the enlarged structure at point B in the middle.

[0069] Figure 6 For the present invention Figure 4 Schematic diagram of the enlarged structure at point C in the middle.

[0070] Figure 7 It is a schematic diagram of the structure of the disc after sectioning of the present invention.

[0071] Figure 8 It is a schematic structural diagram of the present invention after sectioning along the first blocking block.

[0072] In the figure: 1, drilling hole; 2, plugging box; 201, fixed circular plate; 3, fixed nail; 401, first straight rod; 402, inclined rod; 403, second straight rod; 5, movable circular plate; 501, round tube; 6, moving rod; 601, plug nail; 602, round hole; 603, sliding groove; 7, circular plate; 701, cross plug rod; 702, fixed rod; 703, rotating plate; 8, cross rod; 801, sliding contact Head; 802, limit groove; 9, baffle; 901, air pressure sensor; 10, airbag; 1101, inflation tube; 1102, sealing cover; 12, exhaust pipe; 1201, first blocking block; 1202, second blocking block; 1203, third blocking block; 1204, spring; 1205, fixing ring; 1206, connecting rod; 1207, rotating block; 13, connecting pipe; 1301, one-way valve. DETAILED DESCRIPTION

[0073] The following description is used to disclose the present invention so that those skilled in the art can implement the present invention. The preferred embodiments described below are only examples, and those skilled in the art may think of other obvious variations.

[0074] like Figures 1 to 8 The one-time well-forming blasting construction process shown includes the following steps:

[0075] S1. Conduct a detailed investigation of the geological conditions of the wellbore location and design the wellbore based on geological data and engineering requirements;

[0076] S2. Arrange the location and quantity of drilling holes reasonably according to the design requirements to ensure that the wellbore has a regular shape after blasting;

[0077] S3. Calculate the charge amount for each borehole according to rock properties, wellbore diameter, and drilling depth parameters, and use the line charge density method for charging;

[0078] S4. After charging, use a plugging device to seal the borehole to prevent explosion gas leakage;

[0079] S5. Design the detonation network, start the detonation device according to the predetermined detonation sequence, and carry out blasting.

[0080] As an optional embodiment, the blocking device includes:

[0081] The blocking box 2 is inserted into the borehole 1, and a fixed circular plate 201 is fixed on the top of the blocking box 2;

[0082] A positioning assembly is installed between the fixed circular plate 201 and the drill hole 1 and is used to position the blocking box 2;

[0083] An impact positioning assembly is installed between the blocking box 2 and the borehole 1, and is used to enhance the fixation of the blocking box 2 when the explosion generates impact force;

[0084] As an optional embodiment, the positioning assembly includes a plurality of fixing nails 3, which penetrate the fixing circular plate 201 and fix it on the ground around the drilling hole 1;

[0085] In a well blasting construction, in order to prevent the explosion gas leakage from causing safety hazards to the workers, it is usually necessary to seal the borehole. In the prior art, plugging materials such as clay and sand are usually used to seal the borehole. However, when plugging materials such as clay and sand are used to seal the borehole, if the explosion impact inside the borehole increases, the explosion gas impact inside the borehole will increase, causing the plugging materials such as clay and sand to be broken by the explosion, causing safety hazards to the workers.

[0086] This embodiment of the present invention can solve the above problems. The specific implementation method is as follows: the staff inserts the blocking box 2 into the inside of the borehole 1, and then fixes the blocking box 2 inside the borehole 1 through the locking assembly to achieve preliminary positioning of the borehole 1, and then blasts the inside of the borehole. When blasting inside the borehole 1, if the impact force generated by the blasting exerts an impact force on the blocking box 2, causing the blocking box 2 to have a tendency to detach from the inside of the borehole 1, the impact positioning assembly located below the blocking box 2 intercepts the impact force generated by the blasting, so that the impact force generated by the blasting acts on the impact positioning assembly. When the impact positioning assembly is impacted by the blasting, the mechanical force of the blocking box 2 is used to enhance the force between the blocking box 2 and the borehole 1, thereby enhancing the fixing effect of the blocking box 2, which is beneficial to avoid the blocking box 2 detaching from the borehole 1 under the blasting, causing the gas leakage generated by the blasting inside the borehole 1 to cause a safety hazard.

[0087] As an optional embodiment, the impact positioning assembly includes:

[0088] A plurality of sliding grooves 603 are provided on the inner wall of the blocking box 2 in a circular array;

[0089] A plurality of moving rods 6 are arranged one by one corresponding to the sliding slots 603 and are horizontally slidably installed inside the corresponding sliding slots 603. A plurality of plug-in pins 601 are fixed in a linear array on one side of all the moving rods 6 facing the outside of the blocking box 2.

[0090] A plurality of groups of circular holes 602, one group of circular holes 602 corresponds to one sliding groove 603, and the circular holes 602 of the same group are arranged in a linear array and penetrate the interior of the sliding groove 603, and the circular holes 602 are adapted to the plug-in pins 601;

[0091] The movable circular plate 5 is slidably installed below the blocking box 2 through the circular tube 501;

[0092] A plurality of second straight rods 403 are arranged one by one corresponding to the moving rods 6, and are vertically slidably installed on the side walls of the corresponding moving rods 6, both ends of all the second straight rods 403 are rotatably installed with inclined rods 402, and one end of all the inclined rods 402 facing away from the second straight rods 403 is rotatably installed with the first straight rods 401, the first straight rods 401 located at the top are fixed together to the top of the inner wall of the blocking box 2, and the first straight rods 401 located at the bottom are fixed together to the top of the movable circular plate 5;

[0093] When the impact force generated by the blasting acts on the movable circular plate 5, the movable circular plate 5 is pushed to move upward. The upward movement of the movable circular plate 5 pushes the first straight rod 401 located below to move upward, and the top of the first straight rod 401 pushes the inclined rod 402 to move upward, thereby pushing the second straight rod 403 to move upward and has a tendency to move toward the movable rod 6, thereby pushing the movable rod 6 to drive the plug-in nail 601 to move toward the inside of the sliding groove 603, so that the plug-in nail 601 passes through the circular hole 602 and is inserted into the inside of the drill hole 1, thereby the plug-in fixation between the blocking box 2 and the drill hole 1 is generated through the plug-in nail 601, so that when the movable circular plate 5 is subjected to the impact of the blasting and has a tendency to drive the blocking box 2 to detach from the inside of the drill hole 1, the plug-in nail 601 can be driven by the pushing action of the movable circular plate 5 to generate a plug-in fixation between the drill hole 1 and the blocking box 2, thereby helping to improve the stability of the blocking box 2 when the explosion occurs, thereby helping to avoid the safety hazard caused by the detachment of the blocking box 2 and the overflow of the blasting gas.

[0094] As an optional embodiment, the impact positioning assembly further includes:

[0095] The movable circular plate 5 is a counterweight;

[0096] After the blasting is completed, under the action of gravity of the movable circular plate 5, the first straight rod 401 can be driven to move downward, thereby driving the second straight rod 403 to reset, thereby driving the positioning between the blocking box 2 and the borehole 1 to be cancelled, thereby facilitating the removal of the blocking box 2.

[0097] As an optional embodiment, the impact positioning assembly further includes:

[0098] A fixed rod 702, fixed to the top of the movable circular plate 5;

[0099] The cross plug rod 701 is sleeved on the top of the fixed rod 702, and the top of the cross plug rod 701 passes through the top of the blocking box 2 and is fixed with a rotating disk 703;

[0100] The disc 7 is vertically slidably sleeved on the outer wall of the cross-connecting rod 701;

[0101] A plurality of cross bars 8 are arranged one by one corresponding to the second straight bars 403 and fixed on the side walls of the corresponding second straight bars 403;

[0102] A plurality of sliding contacts 801 are arranged one by one corresponding to the cross bars 8 and fixed to the ends of the corresponding cross bars 8;

[0103] A plurality of limiting grooves 802 are provided in a circumferential array inside the disc 7 and are arranged corresponding to the sliding contacts 801. The sliding contacts 801 are slidably installed inside the corresponding limiting grooves 802.

[0104] When the connection between the borehole 1 and the plugging box 2 is too tight, making it difficult to drive the second straight rod 403 to reset under the action of gravity of the movable circular plate 5, the staff can rotate the rotating disk 703, and the rotating disk 703 drives the fixed rod 702 to rotate, and the fixed rod 702 drives the circular disk 7 slidably connected thereto to rotate, and the circular disk 7 drives the limiting groove 802 to rotate, so that under the guidance of the limiting groove 802, the cross bar 8 is driven to move in the direction of the circular disk 7, thereby driving the second straight rod 403 to reset through the cross bar 8, so that the second straight rod 403 can be reset by manual operation of the staff, thereby facilitating the removal of the plugging box 2.

[0105] As an optional embodiment, it also includes:

[0106] The airbag 10 is fixed to the side wall of the blocking box 2;

[0107] The inflation tube 1101 is inserted into the top of the blocking box 2, and the bottom of the inflation tube 1101 passes through the blocking box 2 and is fixedly connected with the airbag 10;

[0108] The sealing cover 1102 is detachably fixedly mounted on the top of the inflation tube 1101;

[0109] The staff can inflate the interior of the airbag 10 through the inflation tube 1101, so that the airbag 10 expands after being inflated. The expanded airbag 10 is squeezed between the drill hole 1 and the plugging box 2, which is beneficial to seal the gap between the drill hole 1 and the plugging box 2, thereby helping to further avoid the safety hazard caused by the overflow of blasting gas generated by the blasting.

[0110] As an optional embodiment, it also includes:

[0111] The air pressure sensor 901 is fixed to the bottom of the movable circular plate 5;

[0112] The baffle plate 9 is fixed to the bottom of the movable circular plate 5 and is located below the air pressure sensor 901;

[0113] When the blasting gas inside the borehole 1 accumulates, if a large amount of blasting gas is generated, a large amount of blasting gas will leak out instantly when the plugging box 2 is taken out, and at the moment of taking out the plugging box 2, the gas will instantly overflow and generate impact force, which will cause safety hazards to the staff;

[0114] This embodiment of the present invention can solve the above problems. The specific implementation method is as follows: when a large amount of blasting gas accumulates inside the borehole 1, the air pressure inside the borehole 1 increases, and the increased air pressure exerts a squeezing effect on the air pressure sensor 901, so that the air pressure sensor 901 detects the pressure. When the air pressure sensor 901 detects the pressure, it identifies that the internal air pressure of the borehole 1 increases, that is, it identifies that blasting gas accumulates inside the borehole 1, thereby being able to prompt the staff and avoid the situation where the blocking box 2 is removed when gas accumulates inside the borehole 1, thereby causing a safety hazard.

[0115] As an optional embodiment, it also includes:

[0116] The exhaust pipe 12 has a bottom portion penetrating the movable circular plate 5 and a top portion penetrating the fixed circular plate 201. The exhaust pipe 12 has a hard pipe at the top and a soft pipe at the bottom.

[0117] A plugging assembly is installed inside the exhaust pipe 12 to plug the exhaust pipe 12 and exhaust the exhaust when exhaust is required;

[0118] When the plugging component is in a closed state, the interior of the exhaust pipe 12 is blocked, so that the generated gas will not overflow and cause a safety hazard. When the plugging component is in an open state, the interior of the exhaust pipe 12 is unobstructed, so that the generated gas can be discharged to relieve the pressure inside the borehole 1. After blasting, if it is necessary to dismantle the plugging box 2 as soon as possible, the staff can connect the external storage component through the exhaust pipe 12, and then open the plugging component to allow the gas to be discharged and stored through the exhaust pipe 12, thereby relieving the pressure inside the borehole 1 to facilitate subsequent construction and avoiding the overflow of blasting gas to cause a safety hazard.

[0119] As an optional embodiment, the blocking component includes:

[0120] A fixing ring 1205 is fixed to the hard pipe portion of the exhaust pipe 12;

[0121] Spring 1204, fixed to the top of the fixing ring 1205;

[0122] The first blocking block 1201 is fixed to the top of the spring 1204 and is slidably mounted on the exhaust pipe 12;

[0123] The third blocking block 1203 is fixed inside the exhaust pipe 12 and is located above the first blocking block 1201;

[0124] The second blocking block 1202 is slidably mounted inside the exhaust pipe 12 and is located between the first blocking block 1201 and the third blocking block 1203;

[0125] Through holes are formed in the first blocking block 1201, the second blocking block 1202 and the third blocking block 1203, and the through holes of the first blocking block 1201 and the third blocking block 1203 are aligned, and the through holes of the second blocking block 1202 and the through holes of the first blocking block 1201 are misaligned;

[0126] The connecting rod 1206 is fixed to the top of the third blocking block 1203, and the top passes through the exhaust pipe 12 and extends out to be fixed with a rotating block 1207, and the rotating block 1207 is rotatably sealed with the top of the fixed circular plate 201;

[0127] When the exhaust pipe 12 needs to be blocked, the through hole of the second blocking block 1202 is staggered with the through holes of the first blocking block 1201 and the third blocking block 1203. When the internal air pressure of the borehole 1 increases, the first blocking block 1201 is pushed upward by the air pressure, thereby enhancing the squeezing force between the first blocking block 1201, the second blocking block 1202 and the third blocking block 1203, thereby enhancing the sealing effect between the first blocking block 1201, the second blocking block 1202 and the third blocking block 1203. When the exhaust pipe 12 needs to be ventilated, The staff rotates the rotating block 1207 to drive the connecting rod 1206 to rotate. Due to the elastic force of the spring 1204, the staff can push the rotating block 1207 to move downward to drive the second blocking block 1202 and the first blocking block 1201 to move downward, thereby facilitating the rotation of the second blocking block 1202. The connecting rod 1206 drives the second blocking block 1202 to rotate, so that the through hole of the second blocking block 1202 is aligned with the through holes of the first blocking block 1201 and the third blocking block 1203, so that the internal airflow of the exhaust pipe 12 is unblocked;

[0128] It should be noted that while the rotating block 1207 is rotationally sealed and connected to the fixed circular plate 201, the rotating connection between the rotating block 1207 and the fixed circular plate 201 can move vertically, so that the rotating block 1207 can be adjusted vertically. For example, the rotating block 1207 is rotationally connected to the fixed circular plate 201 through a rotating piece, the rotating piece is rotationally inserted into the fixed circular plate 201, and the rotating piece has a certain vertical height, so that the fixed circular plate 201 can be vertically moved through the rotating piece.

[0129] As an optional embodiment, it also includes:

[0130] The connecting pipe 13 is fixedly connected with the air bag 10 at the top and penetrates the blocking box 2 and the movable circular plate 5 at the bottom;

[0131] A one-way valve 1301 is fixed inside the connecting pipe 13;

[0132] When the internal air pressure of the borehole 1 increases, the gas can flow unidirectionally toward the inside of the airbag 10 through the one-way valve 1301 inside the connecting pipe 13, so that the airbag 10 expands under the action of the air pressure, thereby enhancing the sealing effect between the borehole 1 and the plugging box 2, which is beneficial to further reduce the leakage of the blasting gas.

[0133] Working principle of the present invention: the staff inserts the blocking box 2 into the inside of the borehole 1, and then fixes the blocking box 2 inside the borehole 1 through the locking assembly to achieve preliminary positioning of the borehole 1, and then blasts the inside of the borehole. When blasting inside the borehole 1, if the impact force generated by the blasting exerts an impact force on the blocking box 2, causing the blocking box 2 to have a tendency to detach from the inside of the borehole 1, the impact positioning assembly located below the blocking box 2 intercepts the impact force generated by the blasting, so that the impact force generated by the blasting acts on the impact positioning assembly. When the impact positioning assembly is impacted by the blasting, it enhances the force between the blocking box 2 and the borehole 1 through its own mechanical force, thereby enhancing the fixing effect of the blocking box 2, which is beneficial to avoid the blocking box 2 detaching from the borehole 1 under the blasting action, causing the gas leakage generated by the blasting inside the borehole 1 to cause a safety hazard.

[0134] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments, and the above embodiments and descriptions only describe the principles of the present invention. The present invention may be subject to various changes and improvements without departing from the spirit and scope of the present invention, and these changes and improvements fall within the scope of the present invention claimed.

Claims

1. One-time well blasting construction process, characterized in that: The following steps are involved: S1. Conduct a detailed investigation of the geological conditions of the wellbore location and design the wellbore based on geological data and engineering requirements; S2. Arrange the location and quantity of drilling holes reasonably according to the design requirements to ensure that the wellbore has a regular shape after blasting; S3. Calculate the charge amount for each borehole according to rock properties, wellbore diameter, and drilling depth parameters, and use the line charge density method for charging; S4. After charging, use a plugging device to seal the borehole to prevent explosion gas leakage; S5. Design the detonation network, start the detonation device according to the predetermined detonation sequence, and carry out blasting.

2. The one-time well blasting construction process according to claim 1 is characterized in that: The blocking device comprises: A blocking box (2) is inserted into the borehole (1), and a fixed circular plate (201) is fixed on the top of the blocking box (2); A positioning assembly, installed between the fixed circular plate (201) and the drill hole (1), and used for positioning the blocking box (2); An impact positioning assembly is installed between the blocking box (2) and the drill hole (1) and is used to enhance the fixation of the blocking box (2) when an explosion generates an impact force.

3. The one-time well-forming blasting construction process according to claim 2 is characterized in that: The impact positioning assembly comprises: A plurality of sliding grooves (603) are arranged in a circular array on the inner wall of the blocking box (2); A plurality of moving rods (6) are arranged one by one corresponding to the sliding grooves (603) and are horizontally slidably installed inside the corresponding sliding grooves (603); a plurality of plug-in pins (601) are fixed in a linear array on one side of all the moving rods (6) facing the outside of the blocking box (2); A plurality of groups of circular holes (602), one group of circular holes (602) corresponding to one sliding groove (603), the circular holes (602) in the same group are arranged in a linear array and penetrate the interior of the sliding groove (603), and the circular holes (602) are adapted to the plug pins (601); A movable circular plate (5) is slidably mounted below the blocking box (2) via a circular tube (501); A plurality of second straight rods (403) are arranged one by one corresponding to the moving rod (6) and are vertically slidably installed on the side walls of the corresponding moving rods (6); both ends of all the second straight rods (403) are rotatably installed with inclined rods (402); one end of all the inclined rods (402) facing away from the second straight rods (403) is rotatably installed with the first straight rod (401); the first straight rods (401) located above are fixed together to the top of the inner wall of the blocking box (2); and the first straight rods (401) located below are fixed together to the top of the movable circular plate (5).

4. The one-time well blasting construction process according to claim 3 is characterized in that: The impact locating assembly further comprises: The movable circular plate (5) is a counterweight block.

5. The one-time well-forming blasting construction process according to claim 3 is characterized in that: The impact locating assembly further comprises: A fixed rod (702) fixed to the top of the movable circular plate (5); A cross plug rod (701) is sleeved on the top of the fixed rod (702), and the top of the cross plug rod passes through the top of the blocking box (2) and is fixed with a rotating disk (703); A disc (7) is vertically slidably sleeved on the outer wall of the cross-connecting rod (701); A plurality of cross bars (8), arranged one-to-one corresponding to the second straight bars (403), and fixed on the side walls of the corresponding second straight bars (403); A plurality of sliding contacts (801) are arranged in one-to-one correspondence with the cross bars (8) and are fixed to the corresponding ends of the cross bars (8); A plurality of limiting grooves (802) are arranged in a circular array inside the disc (7) and are arranged corresponding to the sliding contacts (801). The sliding contacts (801) are slidably mounted inside the corresponding limiting grooves (802).

6. The one-time well-forming blasting construction process according to claim 3 is characterized in that: Also includes: An air bag (10) is fixed on the side wall of the blocking box (2); An inflation tube (1101) is inserted into the top of the blocking box (2), and the bottom of the inflation tube (1101) passes through the blocking box (2) and is fixedly connected to the airbag (10); The sealing cover (1102) is detachably fixedly mounted on the top of the inflation tube (1101).

7. The one-time well-forming blasting construction process according to claim 6 is characterized in that: Also includes: An air pressure sensor (901) is fixed to the bottom of the movable circular plate (5); The baffle plate (9) is fixed to the bottom of the movable circular plate (5) and is located below the air pressure sensor (901).

8. The one-time well-forming blasting construction process according to claim 7 is characterized in that: Also includes: An exhaust pipe (12), the bottom of which passes through the movable circular plate (5) and the top of which passes through the fixed circular plate (201); the exhaust pipe (12) has a hard pipe on the top and a soft pipe on the bottom; A plugging component is installed inside the exhaust pipe (12) and is used to plug the exhaust pipe (12) and to exhaust when exhaust is required.

9. The one-time well-forming blasting construction process according to claim 8, characterized in that: The blocking component comprises: A fixing ring (1205) fixed to the hard pipe portion of the exhaust pipe (12); A spring (1204) fixed to the top of the fixing ring (1205); A first blocking block (1201) is fixed to the top of the spring (1204) and is slidably mounted on the exhaust pipe (12); A third blocking block (1203) is fixed inside the exhaust pipe (12) and is located above the first blocking block (1201); A second blocking block (1202) is slidably mounted inside the exhaust pipe (12) and is located between the first blocking block (1201) and the third blocking block (1203); The first blocking block (1201), the second blocking block (1202) and the third blocking block (1203) are all provided with through holes, and the through holes of the first blocking block (1201) and the third blocking block (1203) are aligned, and the through holes of the second blocking block (1202) and the through holes of the first blocking block (1201) are misaligned; The connecting rod (1206) is fixed to the top of the third blocking block (1203), and the top passes through the exhaust pipe (12) and extends out to be fixed with a rotating block (1207), and the rotating block (1207) is rotatably sealed with the top of the fixed circular plate (201).

10. The one-time well-forming blasting construction process according to claim 9, characterized in that: Also includes: A connecting pipe (13), the top of which is fixedly connected to the air bag (10), and the bottom of which passes through the blocking box (2) and the movable circular plate (5); A one-way valve (1301) is fixed inside the connecting pipe (13).

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