CN212296476U - Super-thick coal seam high-pressure hydraulic cutting system for gas outburst tunnel of highway - Google Patents
Super-thick coal seam high-pressure hydraulic cutting system for gas outburst tunnel of highway Download PDFInfo
- Publication number
- CN212296476U CN212296476U CN202021725092.7U CN202021725092U CN212296476U CN 212296476 U CN212296476 U CN 212296476U CN 202021725092 U CN202021725092 U CN 202021725092U CN 212296476 U CN212296476 U CN 212296476U
- Authority
- CN
- China
- Prior art keywords
- pressure
- hole
- coal seam
- pressure pump
- rotary joint
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Earth Drilling (AREA)
Abstract
The utility model relates to a highway gas outburst tunnel ultra-thick coal seam high pressure hydraulic cutting system, which comprises a left hole, a right hole and hydraulic cutting equipment, wherein the hydraulic cutting equipment comprises a water tank, a high pressure pump, a high pressure hose and a drilling tool, and the drilling tool comprises a high pressure rotary joint, a drilling rod, a drill bit and a cutting head assembly; a transverse channel is arranged between the left hole and the right hole, the high-pressure pump is arranged in one hole, and the drilling tool is arranged in the other hole; the inlet of the high-pressure pump is connected with the water tank, the outlet of the high-pressure pump is connected with one end of a high-pressure hose, the other end of the high-pressure hose penetrates through the transverse channel to be connected with one end of a high-pressure rotary joint in another hole, the other end of the high-pressure rotary joint is connected with a drill rod, and the drill bit and the cutting head assembly are installed at the front end of the. The high-pressure water jet generated by the utility model has cutting force, can increase the horizontal exposed surface of the coal bed, can improve the gas emission and gas extraction effect, and is beneficial to shortening the construction period; and the high-pressure pump and the construction drilling tool are separated in space during construction operation, so that the safety can be improved.
Description
Technical Field
The utility model relates to a coal seam is taken off and is prevented suddenly construction technical field, especially relates to super thick coal seam high pressure hydraulic cutting system in highway gas outburst tunnel.
Background
Along with the rapid development of the expressway network in China, particularly in the southwest area of China, many mountains and mountains are complicated in geology. Road tunnels are increased year by year, and more geological problems such as gas outburst, coal beds and the like are gradually shown. Coal bed gas is a clean energy source, but is a disaster source for engineering construction. The safety and the construction progress of the existing coal seam uncovering outburst prevention construction method need to be improved.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a highway gas outburst tunnel super thick coal seam high pressure water conservancy slot system can improve security and efficiency of construction.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
the super-thick coal seam high-pressure hydraulic cutting system for the gas outburst tunnel of the expressway comprises a left hole, a right hole and hydraulic cutting equipment, wherein the hydraulic cutting equipment comprises a water tank, a high-pressure pump, a high-pressure hose and a drilling tool, and the drilling tool comprises a high-pressure rotary joint, a drill rod, a drill bit and a cutting head assembly;
a transverse channel is arranged between the left hole and the right hole, the high-pressure pump is arranged in one hole, and the drilling tool is arranged in the other hole; the high-pressure pump entry linkage water tank, the high-pressure pump exit linkage high-pressure hose's one end, the high-pressure hose other end passes the cross passage and is connected with the one end of the high-pressure rotary joint in another hole, and the drilling rod is connected to the high-pressure rotary joint other end, drill bit and cutting head assembly are installed at the drilling rod front end.
Preferably, the high pressure pump is mounted 500m from the face of the tunnel.
Furthermore, a pressure relief valve is arranged between the high-pressure hose and the high-pressure rotary joint.
Furthermore, explosion doors are installed at two ends of the transverse channel to form a risk avoiding chamber.
Compared with the prior art, the utility model discloses following beneficial effect has:
the high-pressure water jet generated by the hydraulic slotting equipment has cutting force, can increase the transverse exposed surface of the coal bed, can improve the gas emission and gas extraction effects, and is beneficial to shortening the construction period; and the high-pressure pump and the construction drilling tool are separated in space during construction operation, so that the safety can be improved.
Drawings
FIG. 1 is a schematic view of a high pressure hydraulic slitting system during left hole hydraulic slitting;
FIG. 2 is a schematic structural view of a hydraulic slitting apparatus;
FIG. 3 is a schematic diagram of a coal seam hydraulic kerf drilling.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings.
As shown in fig. 1 and 2, the utility model discloses a highway gas outburst tunnel ultra-thick coal seam high pressure hydraulic cutting system, including left hole 101, right hole 102 and hydraulic cutting equipment 5. A transverse channel 103 is arranged between the left hole 101 and the right hole 102, and explosion doors 104 can be arranged at two ends of the transverse channel 103 to form a danger avoiding chamber.
The hydraulic slitting device 5 comprises a water tank 51, a high-pressure pump 52, a slitting high-pressure hose 53 and a drilling tool, wherein the drilling tool comprises a high-pressure rotary joint 54, a drilling machine 58, a drill stem 56 and a drill bit and cutting head assembly 57.
When hydraulic slotting operation is carried out on the left hole 101, a drilling tool is placed in the left hole 101, a high-pressure pump 52 is installed at the position, 500m away from the tunnel face, of the right hole 102, the inlet of the high-pressure pump 52 is connected with a water tank 51, the outlet of the high-pressure pump 52 is connected with one end of a slotting high-pressure hose 53, the slotting high-pressure hose 53 is laid to the slotting position of the left hole 101 from a pump station along a transverse channel 103 and is connected with one end of a high-pressure rotary joint 54, the other end of the high-pressure rotary joint 54 is connected with a drill rod 56, and a drill bit and cutting head. A pressure relief valve 55 is arranged between the slotting high-pressure hose 53 and the high-pressure rotary joint 54. The pressure relief valve 55 can be an electric pressure relief valve, and can be remotely relieved by being connected with a remote control system. The utility model discloses well high-pressure pump has separated in the space with the construction drilling tool, can improve the security.
When hydraulic slotting is performed on the right hole 102, the high-pressure pump 52 is installed at the position 500m away from the tunnel face of the left hole, and the slotting high-pressure hose 53 is laid from the pump station to a slotting site. By the arrangement, remote operation is performed, and construction safety can be improved.
The utility model discloses a high-pressure hydraulic slotting construction method for an ultra-thick coal seam of a gas outburst tunnel of a highway, which comprises the following steps;
s1, excavating the left hole 101 and the right hole 102 on the construction road section, and stopping after excavating to a certain distance from the coal seam; a transverse channel 103 is arranged between the left hole 101 and the right hole 102, and explosion doors 104 can be arranged at two ends of the transverse channel 103 to form a danger avoiding chamber;
s2, constructing a through-layer drill hole in the hole;
s3, positioning the slotting pump set;
and S4, selecting partial drill holes to adopt hydraulic slotting to form the hydraulic slotting drill holes 510.
In operation, the drill rig 58 drives the drill rod 56 to rotate and drill into the coal seam; the drill and cutting head assembly 57 is driven by rotation of the drill stem 56 to rotate about its axis; fluid enters the bore pipe 56 through the high pressure pump 52 and high pressure swivel 54, and then into the drill bit and cutting head assembly 57.
When the hydraulic slotting drill hole is selected, the odd number drill hole is selected as the odd number drill hole, and the even number drill hole is selected as the even number drill hole. The value of the total coal amount (t) of the slotting is not less than 20 times of the thickness (m) of the coal bed. The water supply requirement of the slotting pump is above 125L/min during slotting, and the slotting pump is stable and continuous. The power supply requires two voltages of 1140V and 660V, the power of a slotting pump is 250KW, and the pressure bearing capacity of the slotting high-pressure hose 53 is not lower than 98 MPa.
When in slotting, the KFS98-65 type drilling water jet type coal seam slotting forming device has the main technical parameters shown in the table 1.
TABLE 1
High-pressure water reaches the position of a coal seam through a sealing drill rod, and is rotated at a high speed through a high-pressure rotary joint with a cutting nozzle to generate high-speed jet beams (200-500m/s) to spray highly concentrated water flow to cut and destroy the coal seam, artificially rebuild cracks on the coal seam section, increase the exposed area of coal in the air, form a gas flow channel, accelerate gas desorption, improve the air permeability of the coal seam, increase the gas release speed, improve the drainage of the coal seam, finally play a pressure relief role, and achieve the purpose of reaching the standard of gas drainage.
Of course, the present invention can be embodied in many other forms without departing from the spirit or essential attributes thereof, and it should be understood that various changes and modifications can be made by one skilled in the art without departing from the spirit or essential attributes thereof, and that such changes and modifications are intended to be included within the scope of the appended claims.
Claims (4)
1. Super thick coal seam high pressure water conservancy slot system of highway gas outburst tunnel, its characterized in that: the hydraulic slotting device comprises a water tank, a high-pressure pump, a high-pressure hose and a drilling tool, wherein the drilling tool comprises a high-pressure rotary joint, a drilling rod, a drill bit and a cutting head assembly;
a transverse channel is arranged between the left hole and the right hole, the high-pressure pump is arranged in one hole, and the drilling tool is arranged in the other hole; the high-pressure pump entry linkage water tank, the high-pressure pump exit linkage high-pressure hose's one end, the high-pressure hose other end passes the cross passage and is connected with the one end of the high-pressure rotary joint in another hole, and the drilling rod is connected to the high-pressure rotary joint other end, drill bit and cutting head assembly are installed at the drilling rod front end.
2. The highway gas outburst tunnel ultra-thick coal seam high-pressure hydraulic slotting system according to claim 1, which is characterized in that: the high-pressure pump is arranged 500m away from the tunnel face.
3. The highway gas outburst tunnel ultra-thick coal seam high-pressure hydraulic slotting system according to claim 1, which is characterized in that: a pressure relief valve is arranged between the high-pressure hose and the high-pressure rotary joint.
4. The highway gas outburst tunnel ultra-thick coal seam high-pressure hydraulic slotting system according to claim 1, which is characterized in that: explosion doors are installed at two ends of the transverse channel to form a risk avoiding chamber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021725092.7U CN212296476U (en) | 2020-08-18 | 2020-08-18 | Super-thick coal seam high-pressure hydraulic cutting system for gas outburst tunnel of highway |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021725092.7U CN212296476U (en) | 2020-08-18 | 2020-08-18 | Super-thick coal seam high-pressure hydraulic cutting system for gas outburst tunnel of highway |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212296476U true CN212296476U (en) | 2021-01-05 |
Family
ID=73938213
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021725092.7U Active CN212296476U (en) | 2020-08-18 | 2020-08-18 | Super-thick coal seam high-pressure hydraulic cutting system for gas outburst tunnel of highway |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212296476U (en) |
-
2020
- 2020-08-18 CN CN202021725092.7U patent/CN212296476U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110145233B (en) | Rock burst coal seam drilling-cutting-pressing-pumping-injecting multi-disaster cooperative prevention and control method | |
| CN105156085B (en) | The coal mine underground coal bed tree-shaped uniform anti-reflection method of drilling composite fracturing | |
| US20200080382A1 (en) | Drill-power-based directional hydraulic fracturing system for downhole quick slotting and method thereof | |
| CN102383828B (en) | Refection reducing and outburst eliminating method for deep-hole hydraulic fracture driving gas shallow hole extraction | |
| CN105971663B (en) | A kind of the drilling arrangement and anti-reflection method of coal seam high-pressure hydraulic slot pressure break | |
| CN109958421B (en) | Pre-crack hydraulic fracturing roof cutting pressure relief construction method and drilling machine | |
| CN102619552B (en) | Directional hydraulic pressing penetration, permeability increase and outburst elimination method of guide groove | |
| CN111322048B (en) | Hard roof rock burst subsection direction-control fracturing treatment method | |
| CN102213077A (en) | Coal seam reaming system using three-dimensional (3D) swirling water jet and reaming and fracturing method for permeability enhancement | |
| CN103195468A (en) | System process for conducting efficient strengthened extraction in surrounding rock | |
| CN105422164B (en) | Hydrofracturing is anti-reflection to aid in coal seam efficient water injection method and apparatus | |
| CN103306657B (en) | A kind of coal seam cutting release is anti-reflection and slot holding device and method | |
| CN110685683A (en) | Top-releasing device and method for front-mixing type abrasive water jet flow directional cutting top plate | |
| CN111441817B (en) | Method for reinforcing gas extraction by synergistic effect of coal seam drilling jet fracturing and mining pressure | |
| CN113374440B (en) | Rapid plugging method and construction method for water burst channel of hidden collapse column | |
| CN102966372A (en) | Slotting induced-flow pressure-relief anti-reflection method for complicated seam | |
| CN114396244B (en) | Method for extracting gas by up-and-down combined permeability-increasing of deep coal seam group well | |
| WO2022052288A1 (en) | Remotely controlled high-efficiency hydraulic cutting device for permeability increase of coal seam, and construction method | |
| CN114165198B (en) | Directional hydraulic fracturing coal seam pressure relief and permeability increase device and pressure relief and permeability increase method | |
| CN206942804U (en) | A kind of novel hydropower punching operation machine | |
| CN116146160A (en) | Liquid CO 2 Alkaline water fracturing permeability-increasing gas extraction and coal seam water injection method | |
| CN212296476U (en) | Super-thick coal seam high-pressure hydraulic cutting system for gas outburst tunnel of highway | |
| CN205823322U (en) | A kind of boring arrangement of coal seam high-pressure hydraulic slot pressure break | |
| CN113217043A (en) | Efficient and rapid plugging method and construction method for water source with water inrush fault water guide zone | |
| CN112855061A (en) | Hydraulic cutting recovery system and method for ground gas extraction shear failure drilling |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CB03 | Change of inventor or designer information |
Inventor after: Kang Wei Inventor after: Wang Min Inventor after: Yang Yang Inventor after: Fan Zehua Inventor after: Huang Chenguang Inventor after: Chen Kai Inventor after: Yu Haiping Inventor after: Wei Dong Inventor after: Yang Kai Inventor after: Liu Chuang Inventor after: Sun Wenshu Inventor after: Huang Zhiliang Inventor after: Hao Xuebin Inventor after: Jiang Rui Inventor before: Kang Wei Inventor before: Wang Min Inventor before: Yang Yang Inventor before: Fan Zehua Inventor before: Yu Haiping Inventor before: Wei Dong Inventor before: Yang Kai Inventor before: Liu Chuang Inventor before: Sun Wenshu Inventor before: Huang Zhiliang Inventor before: Hao Xuebin Inventor before: Jiang Rui |
|
| CB03 | Change of inventor or designer information |