CN104500090A - Method for treating coal-mine roadway roof caving by roof filling through foam-material filler - Google Patents
Method for treating coal-mine roadway roof caving by roof filling through foam-material filler Download PDFInfo
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- CN104500090A CN104500090A CN201410691048.1A CN201410691048A CN104500090A CN 104500090 A CN104500090 A CN 104500090A CN 201410691048 A CN201410691048 A CN 201410691048A CN 104500090 A CN104500090 A CN 104500090A
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- roof
- hole
- tunnel
- mine roadway
- coal
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Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
Abstract
The invention relates to a method for treating coal-mine roadway roof caving by roof filling through foam-material filler and aims to solve the problems of high construction difficulty, secondary roof caving and gas leak in roof-suspending operation and overhead operation during roadway roof caving treatment. The method includes firstly constructing injection holes obliquely upwards in well-supported section of the roadway in a roof caving area, injecting foaming filling fluid, foaming the filling materials to form an integral solid filler so as to compact and close the roof after reaching pressure intensity. On this basis, an H-shaped steel shed support is erected and can quickly, safely and reliably pass the roof caving area. The method is simple, easy to operate and good in effect and provides reliable guarantee for construction safety.
Description
Technical field
The present invention relates to colliery treatment of roof collapse technical field, is a kind of method utilizing obturation to connect top, the roof fall of Seal treatment colliery.
Background technology
Roof collapse is one of five large disasters of coal production, and roof fall region back is dealt with improperly, again collapsing of top board easily occurs and emits, cause casualties and the damage of equipment, along empty roof fall, easily there is the hidden danger such as pernicious gas exposes, affect the safety in production in colliery.
At present, the method for home and abroad colliery process fall of ground mainly contains: Bolt net and jet note method, metallic support grillage method, wedging method etc.Said method all needs constructor's operation under the back of non-support for a long time, usual roof fall region back lithology is poor, loose crushing, self-bearing capacity are poor, very easily there is roof fall again, cause secondary disaster, as gob side entry roof fall, pernicious gas may be caused to overflow, and therefore the safety of constructor is difficult to ensure.Simultaneously when roof collapse is higher, need to set up scaffold and carry out ascend operation, complex procedures, construction speed is slow, further increases the insecurity of construction.The employing such as metallic support grillage method, wedging method timber carries out connecing to be determined, and it is unreal that existence connects top, and timber holds perishable problem in wet condition.Therefore a kind of simple, safe and reliable coal mine roadway roof collapse processing method is badly in need of.
Summary of the invention
The technical problem to be solved in the present invention is the above-mentioned defect how overcoming prior art, and provide a kind of construction technology simple, speed of application is fast, construction effect is good, safety of workers coefficient is high, and efficiency of construction is high, has the method for the advantages such as anti-secondary roof fall, anti-gas overflowing.
For solving the problems of the technologies described above, this utilizes expanded material obturation to connect the method for top process coal mine roadway roof collapse, comprises the steps:
1.. in roof fall areas outside erection temporary lining, guarantee personnel's operating environment safety;
2.. in the middle of the section of complete tunnel and side direction roof fall region, tunnel two is each makes a call to a material hole, the elongated central line of above-mentioned material hole and horizontal plane angle are 15 ~ 25 ° of angles, deflect in the elongated central alignment tunnel of the material hole of both sides, tunnel, and be 15 ~ 20 ° of angles with the vertical bisector plane angle in tunnel, middle material hole and both sides, tunnel material hole are carried in a row, or emit a region large, can beat and arrange material hole more, array pitch 3 meters, hole depth is as the criterion to penetrate coal rock layer top board
3.. in material hole, install Grouting Pipe, by note rifle to foam-injection type packing fluid in Grouting Pipe, when pressure is increased to 6Mpa in hole, should stop immediately, change hole pressure injection, must not excessive pressure injection, in order to avoid note bad coal body;
4.. in Grouting Pipe lower end, sealer is installed, hole packer insertion depth 1.5 ~ 5m, broken eye or coal dust in boring must be blown off before lower hole packer, prevent from extruding between hole packer and rib sternly not causing spillage,
5.. form overall solid-state charges after foaming, obtain solid top board; Inbreak bastard coal below cleaning roof fall region, and carry out shed shoring.
As optimization, the temporary lining near the normal tunnel section erection in roof fall region is monomer temporary lining, requires that array pitch can not be greater than 800mm.
As optimization, described filling tube is no less than two rows, exposes 100-400mm, guarantees that empty top zone can be filled with.
As optimization, the solid-state charges of described entirety are expansion type packing fluid, require that foaming ratio is not less than 1:15.
The present invention is directed in fall of ground processing procedure, need empty top operation, ascend operation, construction safety is difficult to the problems such as guarantee, first near roof fall district erection hydraulic monomer canopy, provides temporary lining, ensures the safety of operating area; On request material hole is beaten to roof fall region afterwards, and stay and establish filling tube; Finally by the curing materials staying the filling tube established roof fall region to be injected with to intensity, reinforce roof fall region and neighbouring country rock thereof and play confining gas effect, fast, safety, reliably processing coal mine roadway roof collapse.In whole work progress, do not need long-time operation under the top board of inbreak region, do not need ascend operation simultaneously, can fast, safe, reliably process coal mine roadway roof collapse.Its method is simple, and speed is fast, easy to operate, effective, has practicality widely in fall of ground process field.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the method that this utilizes expanded material obturation to connect top process coal mine roadway roof collapse is described further:
Fig. 1 is roof fall regional structure generalized section (moving towards vertical cutting along tunnel);
Fig. 2 is generalized section (moving towards vertical cutting along tunnel) after utilizing obturation process roof fall.
In figure: 1 for roof fall region, 2 for temporary lining, 3 be complete tunnel section, 4 for filling tube, 5 for overall solid-state charges, 6 be bastard coal.
Detailed description of the invention
Embodiment 1: as shown in Figure 1-2, this method utilizing expanded material obturation to connect top process coal mine roadway roof collapse comprises the steps:
1.. outside roof fall region 1, set up temporary lining 2, guarantee personnel's operating environment safety;
2.. in the middle of the section 3 of complete tunnel and side direction roof fall region, tunnel two 1 is each makes a call to a material hole, the elongated central line of above-mentioned material hole and horizontal plane angle are 15 ~ 25 ° of angles, deflect in the elongated central alignment tunnel of the material hole of both sides, tunnel, and be 15 ~ 20 ° of angles with the vertical bisector plane angle in tunnel, middle material hole and both sides, tunnel material hole are carried in a row, or emit a region large, can beat and arrange material hole more, array pitch 3 meters, hole depth is as the criterion to penetrate coal rock layer top board
3.. in material hole, install Grouting Pipe, by note rifle to foam-injection type packing fluid in Grouting Pipe, when pressure is increased to 6Mpa in hole, should stop immediately, change hole pressure injection, must not excessive pressure injection, in order to avoid note bad coal body;
4.. in Grouting Pipe 4 lower end, sealer (not shown) is installed, hole packer insertion depth 1.5 ~ 5m, broken eye or coal dust in boring must be blown off before lower hole packer, prevent from extruding between hole packer and rib sternly not causing spillage,
5.. form overall solid-state charges 5 after foaming, obtain solid top board; Inbreak bastard coal 6 below cleaning roof fall region 1, and carry out shed shoring.
Temporary lining 2 near the normal tunnel section erection in roof fall region 1 is monomer temporary lining, requires that array pitch can not be greater than 800mm.
Described filling tube 4 is no less than two groups, exposes 100-400mm, guarantees that empty top zone can be filled with.
Described expansion type packing fluid can adopt coal mine filling enclosed material (Sai Fute SF-2) or other rigid foam expanded materials, and its foaming ratio is not less than 1:15, and namely before and after foaming, volume ratio is 1:15.
Claims (4)
1. utilize expanded material obturation to connect a method for top process coal mine roadway roof collapse, comprise the steps:
1.. in roof fall region (1) outside erection temporary lining (2), guarantee personnel's operating environment safety;
2.. in the middle of complete tunnel section (3) and side direction roof fall region, tunnel two (1) is each makes a call to a material hole, the elongated central line of above-mentioned material hole and horizontal plane angle are 15 ~ 25 ° of angles, deflect in the elongated central alignment tunnel of the material hole of both sides, tunnel, and be 15 ~ 20 ° of angles with the vertical bisector plane angle in tunnel, middle material hole and both sides, tunnel material hole are carried in a row, or emit a region large, can beat and arrange material hole more, array pitch 3 meters, hole depth is as the criterion to penetrate coal rock layer top board
3.. in material hole, install Grouting Pipe, by note rifle in Grouting Pipe, foam-injection type packing fluid, when pressure is increased to 6Mpa in hole, should stop immediately, change hole pressure injection, must not excessive pressure injection, in order to avoid note bad coal body;
4.. in Grouting Pipe lower end, sealer is installed, hole packer insertion depth 1.5 ~ 5m, broken eye or coal dust in boring must be blown off before lower hole packer, prevent from extruding between hole packer and rib sternly not causing spillage,
5.. form overall solid-state charges (5) after foaming, obtain solid top board; Cleaning roof fall region (1) below inbreak bastard coal (6), and carry out shed shoring.
2. utilize expanded material obturation to connect the method for top process coal mine roadway roof collapse as claimed in claim 1, it is characterized in that: the temporary lining (2) near the normal tunnel section erection in roof fall region (1) is monomer temporary lining, requires that array pitch can not be greater than 800mm.
3. utilize expanded material obturation to connect the method for top process coal mine roadway roof collapse as claimed in claim 1, it is characterized in that: described filling tube (4) is no less than two rows, exposes 100-400mm, guarantee that empty top zone can be filled with.
4. utilize expanded material obturation to connect the method for top process coal mine roadway roof collapse as claimed in claim 1, it is characterized in that: expansion type packing fluid foaming ratio is not less than 1:20.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410691048.1A CN104500090A (en) | 2014-11-25 | 2014-11-25 | Method for treating coal-mine roadway roof caving by roof filling through foam-material filler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410691048.1A CN104500090A (en) | 2014-11-25 | 2014-11-25 | Method for treating coal-mine roadway roof caving by roof filling through foam-material filler |
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| CN104500090A true CN104500090A (en) | 2015-04-08 |
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| CN201410691048.1A Pending CN104500090A (en) | 2014-11-25 | 2014-11-25 | Method for treating coal-mine roadway roof caving by roof filling through foam-material filler |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105888708A (en) * | 2016-06-28 | 2016-08-24 | 金英子 | Roadway roof-fall zone detection and processing method based on radar detection technique |
| CN105909285A (en) * | 2016-06-28 | 2016-08-31 | 冯飞燕 | Roof fall judgment and penetration method based on surrounding rock quality designations |
| CN106089246A (en) * | 2016-06-28 | 2016-11-09 | 孙姗姗 | A kind of fall of ground disaster restorative procedure based on grouted anchor bar |
| CN106121679A (en) * | 2016-06-28 | 2016-11-16 | 孙姗姗 | A kind of processing method of underworkings roof fall |
| CN107654238A (en) * | 2017-09-15 | 2018-02-02 | 中国矿业大学 | A kind of processing method for having dug fall of ground |
| CN109446659A (en) * | 2018-10-31 | 2019-03-08 | 华北科技学院 | A kind of method that integrated forecasting heading emits heights of roofs and hidden danger classification |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105888708A (en) * | 2016-06-28 | 2016-08-24 | 金英子 | Roadway roof-fall zone detection and processing method based on radar detection technique |
| CN105909285A (en) * | 2016-06-28 | 2016-08-31 | 冯飞燕 | Roof fall judgment and penetration method based on surrounding rock quality designations |
| CN106089246A (en) * | 2016-06-28 | 2016-11-09 | 孙姗姗 | A kind of fall of ground disaster restorative procedure based on grouted anchor bar |
| CN106121679A (en) * | 2016-06-28 | 2016-11-16 | 孙姗姗 | A kind of processing method of underworkings roof fall |
| CN107654238A (en) * | 2017-09-15 | 2018-02-02 | 中国矿业大学 | A kind of processing method for having dug fall of ground |
| CN109446659A (en) * | 2018-10-31 | 2019-03-08 | 华北科技学院 | A kind of method that integrated forecasting heading emits heights of roofs and hidden danger classification |
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Application publication date: 20150408 |
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