CN109915142A - A kind of major fault fringe region Controlling of Coal Outburst method - Google Patents

Abstract

It is as follows the invention discloses a kind of major fault fringe region Controlling of Coal Outburst method: situation being arranged according to the fault parameter and stope that have disclosed, is studied and judged in advance in the presence of the section that mining fault rockburst occurs, as keypoint control region；In keypoint control region, a Relieving way is tunneled along major fault geosutures, Relieving way is interior to tunnel release chamber to spacious and comfortable coal column, will the preparatory release of the wide coal column progress in part；Intensive drill eye blasting is carried out to fault trend in Relieving way and release chamber, it forms broken body structure and carries out release, then water injection method is used, buffer the uncoordinated phenomenon of the stress distribution of major fault, it dissipates, the impact energy at release tomography edge, realizes effective prevention of major fault regionality bump.

Description

A kind of major fault fringe region Controlling of Coal Outburst method

Technical field

The invention belongs to coal mining technology fields.

Background technique

Studies have shown that coal mine rock burst is closely related with geological conditions, geological structure type bump accounts for 60% or more. With the increase of coal mining depth, structure type bump frequency is continuously increased with intensity, and the impact in fault region occurs Ground is covered seriously restricts China's coal-mine according to the big shear-zone impact disaster of construction bump larger specific gravity, especially drop Safety in production.It was verified that tunnelling enters major fault zone, since tomography undergoes long-term stress to gather, and coal seam has There is thump risk, big structure type bump, such impact ground can occur under mining operation disturbed conditions Press the length tended to occur and fault rupture line closely related, prevention difficulty is very big, and concealment is strong.This major fault zone impact The prevention and treatment of ground pressure is different from general type, is difficult to take precautions against using conventional measure.It is conventional anti-since coal (rock) body generates mixing impact Control technology specific aim is difficult to hold, if acted on again by the strong disturbance of working face Dynamic stress field, easily generation locality is tight The bump of weight.

Major fault zone, deep mining, thump danger bump have very strong concealment, often in the tunnel way of escape Unexpected structure type bump occurs.Since major fault region often has the group of faults, traction tomography etc., there are areas around stope The domain property region of high stress.The part old mine in China, mining depth have reached 1000m or more, and it is especially tight that fault movement induces impact Weight.Therefore, it for the major fault zone in this deep mining coal seam, the structure type bump with covert features, needs to invent A kind of adaptation major rupture, the biggish high stress band of length and the anti-punching method that impact energy can be discharged steadily in the long term, to prevention and control structure Rock blast hazard is made to be of great significance.

Summary of the invention

The purpose of the present invention is adopt deep big coal mine and occur what tomography type rock blast hazard was difficult to take precautions against for major fault Reality proposes a kind of adaptation major rupture, the stress zone that grows tall, the anti-punching method that can discharge impact energy steadily in the long term.

The technical scheme is that

A kind of major fault fringe region Controlling of Coal Outburst method is as follows:

One, fault parameter and prevention and control region determine

Situation is arranged according to the fault parameter and stope that have disclosed, is studied and judged in advance in the presence of the section that mining fault rockburst occurs, is made Region is prevented and treated for emphasis；

Two, Relieving way and release Chamber Construction

In keypoint control region, a Relieving way is tunneled along major fault geosutures, one fixed width is stayed between geosutures and tunnel Faults protecting coal column, spacious and comfortable coal column irregular for fault rupture line tunnel release cave to spacious and comfortable coal column in Relieving way The wide coal column in part is carried out preparatory release by room；Relieving way formed after as unloading the detachable partly pressure except shear-zone of laminate；? The power visualization area that Relieving way occurs when tunneling can be taken and widen tunnel and local unloading technology, ensure that Relieving way is applied Safety between duration；

Three, release is combined with chamber in tunnel

Intensive drill eye blasting is carried out to fault trend in Relieving way and release chamber, broken body structure is formed and is unloaded Then pressure uses water injection method, buffer the uncoordinated phenomenon of the stress distribution of major fault, dissipates, the impact at release tomography edge Energy.

The positive effect of the present invention is: for major fault zone, bump in deep part mine, by implementing Relieving way and unloading It presses chamber to couple unloading technology, reaches and dissipate for a long time, discharge tomography accumulation impact energy, realize major fault regionality impact ground Effective prevention of pressure.

Illustrate implementation of the invention with reference to the accompanying drawing.

Detailed description of the invention

Fig. 1 is danger zone schematic diagram；Fig. 2 is relieving roadway and release chamber design diagram；Fig. 3 is to unload laminate signal Figure.

Specific embodiment

A kind of major fault fringe region Controlling of Coal Outburst method is as follows:

One, fault parameter and prevention and control region determine

Situation is arranged according to the fault parameter and stope that have disclosed, is studied and judged in advance in the presence of the section that mining fault rockburst occurs, is made Region is prevented and treated for emphasis, as shown in Figure 14 represent danger area；

Two, Relieving way and release Chamber Construction

As shown in Fig. 2, tunneling a Relieving way 2 in keypoint control region along major fault geosutures, being stayed between geosutures and tunnel The faults protecting coal column of one fixed width, spacious and comfortable coal column irregular for fault rupture line, according to tunnel two sides convexo concave, cloth Release chamber 1 is set, the wide coal column in part is subjected to preparatory release；Relieving way 2 formed after as unloading laminate is detachable to remove shear-zone Partly press；The power visualization area occurred when Relieving way 2 tunnels can be taken and widen tunnel and local unloading technology, protect Hinder the safety of Relieving way construction period；

Three, release is combined with chamber in tunnel

As shown in figure 3, carry out drill eye blasting to fault trend in Relieving way and release chamber, explosion hole density is big, dose Foot forms broken body structure and carries out release, then uses water injection method, buffer the uncoordinated phenomenon of the stress distribution of major fault, Energy body 3 is released into coal body conversion, is dissipated, the impact energy at release tomography edge.

Claims (1)

1. a kind of major fault fringe region Controlling of Coal Outburst method, as follows:

(1) fault parameter and prevention and control region determine

Situation is arranged according to the fault parameter and stope that have disclosed, is studied and judged in advance in the presence of the section that mining fault rockburst occurs, is made Region is prevented and treated for emphasis；

(2) release road lane and release Chamber Construction

In keypoint control region, a Relieving way is tunneled along major fault geosutures, one fixed width is stayed between geosutures and tunnel Faults protecting coal column, spacious and comfortable coal column irregular for fault rupture line tunnel release cave to spacious and comfortable coal column in Relieving way The wide coal column in part is carried out preparatory release by room；Relieving way formed after as unloading the detachable partly pressure except shear-zone of laminate；? The power visualization area that Relieving way occurs when tunneling can be taken and widen tunnel and local unloading technology, ensure that Relieving way is applied Safety between duration；

(3) release is combined with chamber in tunnel

Intensive drill eye blasting is carried out to fault trend in Relieving way and release chamber, broken body structure is formed and is unloaded Then pressure uses water injection method, buffer the uncoordinated phenomenon of the stress distribution of major fault, dissipates, the impact at release tomography edge Energy.