CN216517896U

CN216517896U - Well guiding and dredging device adopting reverse well blasting method

Info

Publication number: CN216517896U
Application number: CN202122509391.8U
Authority: CN
Inventors: 祝晓涛; 邵旺来; 樊晓燕; 钱文辉; 刘保中; 徐念念; 亢维斯; 郑有强; 陈彬; 田文江
Original assignee: Sinohydro Engineering Bureau 4 Co Ltd
Current assignee: Sinohydro Engineering Bureau 4 Co Ltd
Priority date: 2021-10-19
Filing date: 2021-10-19
Publication date: 2022-05-13
Anticipated expiration: 2031-10-19

Abstract

The utility model discloses a well guiding and dredging device by a reverse well blasting method, which comprises a guide pipe, wherein the front end of the guide pipe is in a conical structure, and the pipe wall of the guide pipe is provided with a plurality of through holes so that the guide pipe forms a floral tube structure; the guide pipe is used for fully extending into the rock ballast blocked in the guide pipe under the action of external force, so that the explosive in the guide pipe forms impact force to dredge the blocked part after being detonated. The application provides a well pull throughs is led to anti-well blasting method, and simple structure is reasonable, installation convenient to use, preparation low cost. The guide shaft blocking part can be dredged quickly and safely, and smooth on-site construction is guaranteed. Meanwhile, the device is not influenced by geological conditions, is simple and convenient to charge, has high dredging success rate and is worthy of large-area popularization and application.

Description

Well guiding and dredging device adopting reverse well blasting method

Technical Field

The utility model relates to the technical field of mining equipment, in particular to a well guiding dredging device adopting a reverse well blasting method.

Background

With the improvement of the construction method, the reverse well construction method has been widely used in the excavation of vertical and inclined wells. At present, the deep hole top-down blasting method (the lower part of the deep hole is required to be provided with a flat hole) is most widely applied in a plurality of raise boring construction methods, a raise boring machine is adopted in the blasting method, all drill holes which accord with the depth of a vertical shaft are drilled at one time, and a pilot shaft for falling of rock ballast generated by blasting is formed. The method uses the flat tunnel at the bottom of the well as the mucking passage, and has higher work efficiency and higher speed than the method of excavating the vertical shaft from top to bottom by using the common method.

Although the blasting method has a plurality of advantages, the construction on site is limited for a long time when the guide well is blocked in blasting excavation. The guide well is blocked because of reasons such as not timely slagging or a large amount of stone slag compaction after blasting, and the stone slag in the guide well has the danger of falling down at any time. Common field treatment measures:

1. a steel wire rope is placed in the guide well before blasting, the steel wire rope is easy to blast and break in the blasting process, the steel wire rope can be used only once if not blasted and the explosive is difficult to bind in deep well excavation.

2. The water flushing method is long in required time, low in success rate and greatly influenced by geological conditions.

In addition, there is also a significant safety hazard in the above-mentioned treatment process. The raise boring mill reduces the hole blocking probability of the raise boring machine by increasing the diameter of the cutter head, cannot completely stop the hole blocking probability, and the price of the raise boring machine is doubled along with the increase of the diameter of the cutter head, so the economical efficiency of the scheme is not high.

SUMMERY OF THE UTILITY MODEL

The utility model provides a well guiding and dredging device by a reverse well blasting method.

The utility model provides the following scheme:

a guide well dredging device adopting a reverse well blasting method comprises a guide pipe, wherein the front end of the guide pipe is in a conical structure, and the pipe wall of the guide pipe is provided with a plurality of through holes so that the guide pipe forms a floral tube structure;

the guide pipe is used for fully extending into the ballast at the blocking part in the guide well under the action of external force, so that the explosive in the guide pipe forms impact force to dredge the blocking part after being detonated.

Preferably: the pipe follower is sleeved inside the guide pipe and fixedly connected with the guide pipe; the heel tube is used for transmitting external force to the guide tube so that the guide tube extends into the ballast at the blockage part in the guide well.

Preferably: the pipe follower is connected with a flange plate, and the flange plate is used for forming a bearing surface of external force so as to enable the pipe follower and the guide pipe to be coaxially hammered in.

Preferably: the flange plate is detachably connected with the following pipe through a jackscrew mechanism.

Preferably: the tamping hammer structure moves along the axial direction of the follow pipe and is abutted against one side surface of the flange plate far away from the guide pipe to provide acting force for the flange plate so that the guide pipe extends into the ballast at the blocking position in the guide well.

Preferably: the rammer structure is formed with a handle for a user to hold.

Preferably: the material of pipe with the pipe is the metal material.

Preferably: the guide pipe is connected with the heel pipe by adopting a welding process.

Preferably: the outer diameter of the guide pipe is 60 millimeters, and the outer diameter of the heel pipe is 50 millimeters.

Preferably: the through holes are uniformly distributed on the pipe wall within 1 meter from the front end of the guide pipe.

According to the specific embodiment provided by the utility model, the utility model discloses the following technical effects:

according to the utility model, the guide well dredging device adopting the reverse well blasting method can be realized, and in an implementation mode, the guide well dredging device can comprise a guide pipe, wherein the front end of the guide pipe is in a conical structure, and the pipe wall of the guide pipe is provided with a plurality of through holes so that the guide pipe forms a perforated pipe structure; the guide pipe is used for fully extending into the ballast at the blocking part in the guide well under the action of external force, so that the explosive in the guide pipe forms impact force to dredge the blocking part after being detonated. The application provides a well dredging device is led to anti-well blasting method, simple structure is reasonable, installation convenient to use, preparation low cost. The guide shaft blocking part can be dredged quickly and safely, and smooth on-site construction is guaranteed. Meanwhile, the device is not influenced by geological conditions, is simple and convenient to charge, has high dredging success rate and is worthy of large-area popularization and application.

Of course, it is not necessary for any product in which the utility model is practiced to achieve all of the above-described advantages at the same time.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

FIG. 1 is a schematic structural diagram of a guiding well dredging device by a reverse well blasting method according to an embodiment of the utility model;

FIG. 2 is a schematic illustration of the device according to an embodiment of the present invention before the device is hammered into the blockage;

fig. 3 is a schematic view of a device according to an embodiment of the present invention after being hammered into a blockage site.

In the figure: the pipe comprises a guide pipe 1, a conical structure 11, a through hole 12, a heel pipe 2, a flange plate 3 and a rammer structure 4.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments that can be derived by one of ordinary skill in the art from the embodiments given herein are intended to be within the scope of the present invention.

Examples

Referring to fig. 1, 2 and 3, a well dredging device by a reverse well blasting method according to an embodiment of the present invention is shown in fig. 1, 2 and 3, and the device may include:

the device comprises a conduit 1, wherein the front end of the conduit 1 is in a conical structure 11, and the wall of the conduit 1 is provided with a plurality of through holes 12 so that the conduit 1 forms a floral tube structure; specifically, the through holes 12 are uniformly distributed on the pipe wall within 1 meter from the front end of the conduit.

The guide pipe 1 is used for fully extending into the ballast at the blockage part in the guide pipe under the action of external force, so that the explosive in the guide pipe forms impact force after being detonated to dredge the blockage part.

The pipe that this application embodiment provided, when the pilot shaft took place to block up, can be at first pounded into the position department of jam in the pilot shaft under the exogenic action, then the powder charge in the pipe, after detonating the explosive in the pilot shaft, the pipe can be blasted along with the explosion of explosive, forms the impact to blockking up the department rock mass for the ballast at jam position drops to the lower part gallery in by the pilot shaft in, thereby realizes the mediation of pilot shaft.

When the part blocked in the guide shaft is deeper than the upper operation surface, the single guide pipe may not reach the blocked part, so the embodiment of the application can also provide a following pipe 2, and the following pipe 2 is sleeved in the guide pipe 1 and is fixedly connected with the guide pipe 1; the heel tube 2 is used for transmitting external force to the guide tube so that the guide tube extends into the ballast at the blockage part in the guide well. The heel tube is used as a lengthening structure and is physically connected with the guide tube, and the guide tube is hammered into the inside of the stone slag at the blocking part by providing acting force for the heel tube.

In order to prevent the pipe wall of the guide pipe from being damaged due to uneven stress, the embodiment of the application can provide that the pipe following 2 is connected with the flange 3, and the flange 3 is used for forming a bearing surface of external force, so that the pipe following 2 and the guide pipe 1 are coaxially hammered in. Adopt the ring flange as the contact surface of atress, can guarantee with the even atress all around of pipe, and then even transmit power for the pipe, further reach the risk that prevents the destroyed pipe wall of pipe.

In order to facilitate users to modulate the optimal position of the flange plate according to needs, the embodiment of the application can also provide that the flange plate is detachably connected with the heel tube through a jackscrew mechanism. The ring flange can be along the axial free motion of heel pipe, after adjusting to the optimum position, through jackscrew mechanism with the ring flange with heel pipe fixed connection can, after the pipe reachd assigned position, take off this ring flange, can carry out used repeatedly.

It will be appreciated that a variety of tools may be used, such as a hammer or the like, to increase the force of the catheter driving into the heel tube and the catheter. In order to further improve the convenience of the device, the embodiment of the present application may provide a rammer structure 4 sleeved outside the heel tube 2, where the rammer structure 4 moves along the axial direction of the heel tube 2 and abuts against a side surface of the flange 3 away from the guide tube to provide an acting force to the flange 3, so that the guide tube 1 extends into the ballast at the blockage position in the guide well. This rammer structure can adopt the metal block preparation that has certain weight, and with its suit in the outside of heel pipe during the use, the user holds its upward movement one end distance back, makes its rapid downstream, can provide decurrent effort in the twinkling of an eye with the ring flange contact for the pipe downstream. The adoption of the rammer structure can ensure that the stress of the conduit is uniform, so as to prevent the conduit wall from being damaged. For the convenience of operation of a user, a handle for the user to hold is formed on the rammer structure.

Furthermore, the guide pipe and the follow pipe are both made of metal materials. The guide pipe is connected with the heel pipe by adopting a welding process. The outer diameter of the guide pipe is 60 millimeters, and the outer diameter of the heel pipe is 50 millimeters.

The blasting causes the pilot well to be plugged, and the treatment sequence is as follows:

1. and a net piece is arranged at the top of the blocked guide well, so that the accidents caused by the fact that personnel and equipment fall into the well after the guide well is dredged are prevented.

2. The end of the steel pipe is welded into a cone to form a guide pipe by adopting the steel pipe of DN60, the steel pipe is convenient to smash into the rock ballast, a hole is formed in the pipe wall within 1m of the end of the DN60 steel pipe, the steel pipe is made into a perforated pipe, so that the explosive in the pipe can be gathered during explosion, and the blocked rock mass can be effectively impacted. If the plugging length is long, a follow pipe is installed after the first section of DN60 steel pipe is installed, and the follow pipe is manufactured by welding DN50 steel pipe in DN60 steel pipe, so that the two sections of steel pipes are physically connected. In order to prevent the wall of the pipe from being damaged in the process of hammering the steel pipe, a flange plate is arranged on the DN50 steel pipe, and the DN50 steel pipe is inserted into the DN60 steel pipe and is coaxially hammered.

3. And after the steel pipes are installed, blasting by filling explosives in the steel pipes, and in order to ensure the well dredging effect, installing two steel pipes and blasting simultaneously.

In a word, the reverse well blasting method guide well dredging device provided by the application is simple and reasonable in structure, convenient to install and use and low in manufacturing cost. The guide shaft blocking part can be dredged quickly and safely, and smooth on-site construction is guaranteed. Meanwhile, the device is not influenced by geological conditions, is simple and convenient to charge, has high dredging success rate and is worthy of large-area popularization and application.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

The above description is only for the preferred embodiment of the present invention, and is not intended to limit the scope of the present invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention shall fall within the protection scope of the present invention.

Claims

1. The well guiding and dredging device adopting the reverse well blasting method is characterized by comprising a guide pipe, wherein the front end of the guide pipe is in a conical structure, and the pipe wall of the guide pipe is provided with a plurality of through holes so that the guide pipe forms a floral tube structure;

2. The well-dredging device by the reverse well blasting method according to claim 1, further comprising a heel tube, wherein the heel tube is sleeved inside the guide tube and is fixedly connected with the guide tube; the heel tube is used for transmitting external force to the guide tube so that the guide tube extends into the ballast at the blockage part in the guide well.

3. The guide well dredging device by the reverse well blasting method according to claim 2, wherein a flange is connected to the heel tube and used for forming a bearing surface for external force so as to enable the heel tube and the guide tube to be coaxially hammered in.

4. The guide shaft dredging device by the reverse blasting method of claim 3, wherein the flange is detachably connected with the heel tube through a jackscrew mechanism.

5. The anti-well blasting leading well dredging device of claim 3, further comprising a rammer structure sleeved outside the heel tube, wherein the rammer structure moves along the axial direction of the heel tube and abuts against one side surface of the flange plate far away from the guide tube so as to provide acting force for the flange plate, so that the guide tube extends into the ballast at the blockage position in the guide well.

6. The raise-boring tool of claim 5, wherein the ram is formed with a handle for a user to hold.

7. The apparatus of any one of claims 1 to 6, wherein the conduit and the heel tube are made of metal.

8. The apparatus of claim 7, wherein the conduit is connected to the heel tube by welding.

9. The guide shaft dredging device of any one of claim 7, wherein the outer diameter of the guide pipe is 60 mm, and the outer diameter of the heel tube is 50 mm.

10. The apparatus of claim 1, wherein the plurality of through holes are uniformly distributed on the wall of the pipe within 1m from the front end of the pipe.