CN102182482A - Impact-resistant combined anti-pressure supporting system - Google Patents

Impact-resistant combined anti-pressure supporting system Download PDF

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Publication number
CN102182482A
CN102182482A CN2011101035911A CN201110103591A CN102182482A CN 102182482 A CN102182482 A CN 102182482A CN 2011101035911 A CN2011101035911 A CN 2011101035911A CN 201110103591 A CN201110103591 A CN 201110103591A CN 102182482 A CN102182482 A CN 102182482A
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CN
China
Prior art keywords
support
supporting
resisting
timber
impact
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CN2011101035911A
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Chinese (zh)
Inventor
宋录生
刘军
韩玉鉴
何玉龙
陈广强
张银亮
李丰
王传生
赵矿伟
茹化民
韩雅芳
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义马煤业集团股份有限公司跃进煤矿
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Priority to CN2011101035911A priority Critical patent/CN102182482A/en
Publication of CN102182482A publication Critical patent/CN102182482A/en

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Abstract

The invention discloses an impact-resistant combined anti-pressure supporting system which is characterized by comprises a three-grade supporting system; and the impact-resistant combined anti-pressure supporting system has the advantages that: (1) by an optimized three-grade supporting manner, the maintenance amount of engineering roadways is reduced, the coal mining rate and the recovery ratio of a working face are increased, the safety coefficient is enlarged, and the comprehensive benefits of a mine are increased; (2) by applying a combined supporting system technology, the deformation of the roadway is effectively controlled when the working face is influenced by the ground pressure; and when the rock burst generates during production, the system plays a role of impact-resisting, realizes shrinkage and buffering changes and protects the safety of equipments and operators; and (3) according to the supporting system during recovery, dynamic alternatively circulative operation is realized, thus the purposes of resisting impaction, removing pressure and solving danger are realized, the construction process is simplified, various costs are saved, the quality is easy to control, the economic benefit is remarkable, the social benefit is also gained at the same time, and the competition among enterprises is improved.

Description

Erosion control composite compression-resisting support system

Technical field

The present invention relates to a kind of safety of coal mines safeguard system, be specially a kind of erosion control composite compression-resisting support system.

Background technology

Domestic stope working surface of coal mines support pattern adopts single supporting pattern, lack bump prediction aspect method comparatively accurately, correlation by analyzing coal and rock stress state and shock hazard as can be known, the influence that press on mining induced stress impact ground is significant, mining induced stress field and feature thereof have important effect in the evaluation of coal rock layer shock hazard, can only take passive combined support system, guarantee that the extent of injury of bump is reduced to minimum.

The technical characterstic in the dangerous coal seam of external impact is also attached most importance to and is added the monitoring of strong supporting and impact energy.

Single H shaped steel shack supporting in the tradition roadway construction and anchor pole, anchor net, anchor cable, reinforcing bar ladder and concrete are built arch passive protecting pattern.

Therefore, the multi-stage protection system that a kind of work plane recovery ratio, the rate of extraction is provided and strengthens safety factor has been a problem of needing solution badly.

Summary of the invention

In order to overcome above-mentioned deficiency of the prior art, the invention provides and a kind ofly can improve work plane recovery ratio, the rate of extraction and strengthen safety factor, increased the erosion control composite compression-resisting support system of mine comprehensive benefit.

The object of the present invention is achieved like this:

Erosion control composite compression-resisting support system, it is characterized in that comprising three grades of support systems., described three grades of guard systems comprise first support system that is directly adjacent to coal rock layer, with close-connected second support system of first support system, and be connected with second support system be positioned at inner most the 3rd support system.

Described first order support system is: the drift section of working seam is a trapezoidal shape, is provided with anchor cable 2 and anchor pole 1 in last group 3 and top, tunnel, and the following group 4 in tunnel is provided with anchor pole 1.

Described second level support system is: be provided with 36U shaped steel 5 in first support system, 36U shaped steel 5 has connected into a 36U ellipse supporting canopy in first support system by blocking blue 6; Be filled with between 36U ellipse supporting canopy and free time that coal rock layer does not contact arrange in length and breadth oval wooden 7.

Described third level support system is: comprise gate-type column hydraulic support, it comprises the back timber 8 that is radian, the vertical hydraulic prop 9 that is connected with back timber and the back timber hydraulic prop 10 that is positioned at back timber inside, and the base 11 that is connected with vertical hydraulic prop.

The back timber of described radian is connected joist i iron 12 with middle being provided with of 36U ellipse supporting canopy.

Positive beneficial effect

1. by optimizing three grades of support patterns, and have application and the practice of impacting in the coal seam in the mine deep, show that this support pattern can significantly reduce the maintenance in engineering tunnel, improve work plane recovery ratio, the rate of extraction and strengthen safety factor, increased the mine comprehensive benefit.

2. use the composite support systems technology, press when influencing with being subjected to, effectively controlled roadway deformation at work plane; When in process of production bump taking place, this system's performance shock resistance effect has been played and has been shunk the buffering variation, has protected equipment and personnel's safety, is well verified in the production.

3. support system is in exploitation process, realize dynamic alternate cycles utilization, both reached the purpose that danger is separated in the erosion control release, simplified construction technology again, saved multiple expense, and quality is easy to control, remarkable in economical benefits has also won social benefit simultaneously, has improved enterprise competitiveness.

Description of drawings

Fig. 1 is the first support system structural representation of the present invention;

Fig. 2 is first and second support system structural representation of the present invention;

Fig. 3 is three grades of support system structural representations of the present invention;

Among the figure be: anchor pole 1, anchor cable 2, on help 3, help 4 down, 36U shaped steel 5, card are blue 6, oval wooden 7, back timber 8, vertically hydraulic prop 9, back timber hydraulic prop 10, base 11, i iron 12.

The specific embodiment

The present invention is further illustrated below in conjunction with accompanying drawing:

Erosion control composite compression-resisting support system, it is characterized in that comprising three grades of support systems., described three grades of guard systems comprise first support system that is directly adjacent to coal rock layer, with close-connected second support system of first support system, and be connected with second support system be positioned at inner most the 3rd support system.

As shown in Figure 1: described first order support system is: the tunnel exploitation of mine coal is trapezoidal shape, be provided with anchor cable 2 and anchor pole 1 in last group 3 and top, tunnel, the following group 4 in tunnel is provided with anchor pole 1, extruding built-up arch, extruding combination curved beam principle are adopted in anchor pole 1, anchor cable 2 supportings, be equipped with anchor pole 1, anchor cable 2 with powder stick loose, broken country rock around the tunnel is condensed into an integral body, improved the intensity of rock mass, utilize the part of country rock itself, given full play to the self-supporting ability of country rock as supporting and protection structure.After annotating, anchor makes that load can be delivered to lane group effectively on the roadway surrounding rock vault.The distortion and two amounts of helping of shifting near of country rock have been controlled in supporting effectively, thereby have suppressed the sedimentation of top board.

As shown in Figure 2: described second level support system is: be provided with 36U shaped steel 5 in first support system, 36U shaped steel 5 has connected into a 36U ellipse supporting canopy in first support system by blocking blue 6; Be filled with between 36U ellipse supporting canopy and free time that coal rock layer does not contact arrange in length and breadth oval wooden 7, in being arranged, the regional tunnel of danger of burst carries out anchor rete cord+ellipse canopy secondary supporting, its support characteristic is: totally-enclosed, avoid the roadway support plane of weakness to form, stronger setting load, good contractibility are arranged and higher supporting intensity is arranged, the shock resistance effect is more obvious.

As shown in Figure 3: described third level support system is: comprise gate-type column hydraulic support, it comprises the back timber 8 that is radian, the vertical hydraulic prop 9 that is connected with back timber, with the back timber hydraulic prop 10 that is positioned at back timber inside, and the base 11 that is connected with vertical hydraulic prop.Be provided with i iron 12 in the middle of the back timber of described radian and the 36U ellipse supporting canopy.Every abutment pressure of compound rest reaches 2200KN, realize that three grades of supports, three grades allow pressure, by high strength, allow the supporting of pressure, globality by force, allow dump energy that bump produces by absorptions such as anchor pole, anchor cable, steel band, wire lath, ellipse canopy, erosion control supports, reduce bump to the injury that personnel and equipment cause comprehensively, realized the important breakthrough of erosion control support system.In 25110 times lanes 200 ZF7000/18/28 gate-type hydraulic supports are installed and are carried out advance support.

In mine construction, anchor pole (rope) supporting is widely used, and its superiority is obvious to all, but impacts the rock stratum of being inclined to for having in the bigger mine construction process of coal seam buried depth, uses multistage composite surrounding rock supporting system, is the difficult problem of construction always.Make a leapleap forward the ore deposit according to parameters such as roadway surrounding rock lithology, layering conversion roof bolting design scheme repeatedly once, every kind of design scheme is again through repeatedly optimizing, improving, found out the totally-enclosed secondary supporting of the oval canopy of anchor rete cord one-level supporting+high strength 36U shaped steel+three grades of supportings of gate-type column hydraulic support---shock resistance composite support system that resin anchor, anchor cable, " ten " word steel band and wire lath member are formed gradually, be adapted to have the coal seam and impact tendentious comprehensive support scheme.

Made a leapleap forward the ore deposit since lane implementation bolt support under 25040 work planes in 2002, owing to lack experience, pure Design of bolt support was adopted in supporting at that time, and anchor pole uses strong resin anchors such as the hot rolling ribbed steel bar of Φ 22,2200mm, end anchorage, array pitch 750mm between anchor pole.After the roadway destruction, expand and still to add strong supporting when repairing with mining I-shaped guiding principle support, but some tunnels through repeatedly expand repair after, phenomenons such as cracking, fragmentation also appear in roof strata, the more serious problem such as roof fall that occurs.The tunnel is lifted canopy between former design supporting need and hit through the cover canopy and is cooperated the reinforcing supporting from digging back production, after repeatedly repeating maintenance, could satisfy the ordinary production of fully-mechanized mining working substantially.In the coal entry anchor rod support tunnel, the fully-mechanized mining working back production often can be satisfied ordinary production substantially by feeling at ease, but roof fall accident can appear in the part, descends the lane especially, and pressure is existing frequently, lifts canopy between need hitting and reinforces, and carries out erosion control measure in advance.

Carry out the existing long time of bolt support in the tunnel under the deep-well high stress, also once repeatedly revised supporting parameter, if just improve constantly supporting intensity from the angle of anchor pole (rope) effect, this is the destruction that can't stop back.The design of anchor pole (rope supporting) should not considered from the angle that improves supporting intensity merely so, and should consider from reinforcing, the prevention country rock that destroys rock continued angle loosening and the loosening body autostability of raising, should give prominence to the superiority of anchor pole (rope) supporting, the supporting effect of compound roof is guaranteed, thereby form the superiority of three grades of erosion control composite support systems.

Lane under 25110 fully mechanized coal faces, 14 of automatic moving type erosion control shield supports (support of taking a step) have been installed, 100 of gate-type column hydraulic supports, spacing 2.6m, formed the i.e. three grades of superpower erosion control composite support systems of oval canopy of comprehensive employing anchor rete cord, 36U type and gate-type column hydraulic support, supporting length reaches 250m.This supporting has withstood test after having experienced " 8.11 " the bump incident that is equivalent to 2.7 grades of earthquakes to greatest extent aspect safety in production, the time of resuming production is the shortest 1 day, though drift section reduces to some extent, has realized " zero " maintenance.Verified the supporting effect of " erosion control composite support system ".

The ore deposit of making a leapleap forward has entered since the deep mining, heavily stressedly brings constantly that the coal big gun is the generation of bump, especially at digging laneway and stope drift active workings the coal big gun takes place constantly, has a strong impact on the safety in production of mine.For this reason, the ore deposit of making a leapleap forward is tried to explore out one in conjunction with practice and is fit to this ore deposit geology, high-ground stress field condition slowing down the bump generation and alleviating the destruction of coal big gun to roadway support down, promptly finds out and adopt new way, the new method of the anchor rete cord+36U steel+portal support of making a leapleap forward " erosion control composite support system ".After 25110 times lane stope drift active workings adopted, it is good that big section is resisted deformation effect, withstood the bump check that is equivalent to 2.7 grades of earthquakes.

Characteristics of the present invention are: 1. by optimizing three grades of support patterns, and have application and the practice of impacting in the coal seam in the mine deep, show that this support pattern can significantly reduce the maintenance in engineering tunnel, improve work plane recovery ratio, the rate of extraction and strengthen safety factor, increased the mine comprehensive benefit.

2. use the composite support systems technology, press when influencing with being subjected to, effectively controlled roadway deformation at work plane; When in process of production bump taking place, this system's performance shock resistance effect has been played and has been shunk the buffering variation, has protected equipment and personnel's safety, is well verified in the production.

3. support system is in exploitation process, realize dynamic alternate cycles utilization, both reached the purpose that danger is separated in the erosion control release, simplified construction technology again, saved multiple expense, and quality is easy to control, remarkable in economical benefits has also won social benefit simultaneously, has improved enterprise competitiveness.

Above embodiment only is used to illustrate preferred implementation of the present invention; but the present invention is not limited to above-mentioned embodiment; in the ken that described field those of ordinary skill is possessed; any modification of being done within the spirit and principles in the present invention, be equal to and substitute and improvement etc., it all should be encompassed within the technical scheme scope that the present invention asks for protection.

Claims (5)

1. erosion control composite compression-resisting support system, it is characterized in that: comprise three grades of support systems., described three grades of guard systems comprise first support system that is directly adjacent to coal rock layer, with close-connected second support system of first support system, and be connected with second support system be positioned at inner most the 3rd support system.
2. according to the described erosion control composite compression-resisting of claim (1) support system, it is characterized in that: described first order support system is: the tunnel exploitation of mine coal is trapezoidal shape, be provided with anchor cable (2) and anchor pole (1) in last group (3) and top, tunnel, the following group (4) in tunnel is provided with anchor pole (1).
3. erosion control composite compression-resisting support system according to claim 1, it is characterized in that: described second level support system is: be provided with 36U shaped steel (5) in first support system, 36U shaped steel (5) has connected into a 36U ellipse supporting canopy in first support system by card blue (6); Be filled with the oval wood of arranging in length and breadth (7) between 36U ellipse supporting canopy and free time that coal rock layer does not contact.
4. erosion control composite compression-resisting support system according to claim 1, it is characterized in that: described third level support system is: comprise gate-type column hydraulic support, it comprises the back timber (8) that is radian, the vertical hydraulic prop (9) that is connected with back timber, with the back timber hydraulic prop (10) that is positioned at back timber inside, and the base (11) that is connected with vertical hydraulic prop.
5. erosion control composite compression-resisting support system according to claim 4 is characterized in that: be provided with i iron (12) in the middle of the back timber of described radian and the 36U ellipse supporting canopy.
CN2011101035911A 2011-04-25 2011-04-25 Impact-resistant combined anti-pressure supporting system CN102182482A (en)

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Cited By (14)

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Publication number Priority date Publication date Assignee Title
CN102493819A (en) * 2011-11-29 2012-06-13 太原理工大学 Method for controlling stability of surrounding rocks of laneway in coal seam
CN102587962A (en) * 2012-04-13 2012-07-18 中国矿业大学 Methods for arranging and supporting wall-expanded gas extraction drill sites
CN102678120A (en) * 2012-05-18 2012-09-19 河南大有能源股份有限公司 Method for releasing pressure and removing danger of rock burst
CN102839984A (en) * 2012-08-31 2012-12-26 山西晋城无烟煤矿业集团有限责任公司 Oversized-section underground supporting structure
CN103256061A (en) * 2013-04-15 2013-08-21 辽宁工程技术大学 Coal-mining roadway scour-preventing and energy-absorbing combined metal support and assembly method
CN103557008A (en) * 2013-11-06 2014-02-05 中国矿业大学 Thin-walled metal structure and tunnel anchoring surrounding rock coupled anti-scour supporting structure
CN104594926A (en) * 2014-11-27 2015-05-06 太原理工大学 Rapid composite roof roadway support method for high-stress water guiding karst cave group
CN104989436A (en) * 2015-06-02 2015-10-21 辽宁工程技术大学 Energy-absorption type impact-resistant tunnel cross-section hydraulic support
CN105201524A (en) * 2015-09-10 2015-12-30 河南理工大学 Reserved anchor net and right-angled yieldable shed combined support technology for extremely soft coal seam roadway
CN106089271A (en) * 2016-08-17 2016-11-09 国投新集能源股份有限公司 A kind of tunnel filling formula composite support and construction method thereof
CN106246206A (en) * 2016-10-12 2016-12-21 辽宁工程技术大学 Mine stalk semicircular arch tunnel erosion control support
CN108180026A (en) * 2018-03-01 2018-06-19 河南理工大学 Method for protecting support is pressed in tunnel conversion under a kind of non-uniform traffic environment
CN110344854A (en) * 2019-07-24 2019-10-18 辽宁工程技术大学 Press laneway support method to a kind of thump
CN111255492A (en) * 2020-01-15 2020-06-09 中国矿业大学 Method for evaluating support performance of anchor net cable at roadway side

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Cited By (20)

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Publication number Priority date Publication date Assignee Title
CN102493819B (en) * 2011-11-29 2014-07-02 太原理工大学 Method for controlling stability of surrounding rocks of laneway in coal seam
CN102493819A (en) * 2011-11-29 2012-06-13 太原理工大学 Method for controlling stability of surrounding rocks of laneway in coal seam
CN102587962A (en) * 2012-04-13 2012-07-18 中国矿业大学 Methods for arranging and supporting wall-expanded gas extraction drill sites
CN102678120A (en) * 2012-05-18 2012-09-19 河南大有能源股份有限公司 Method for releasing pressure and removing danger of rock burst
CN102678120B (en) * 2012-05-18 2014-02-05 河南大有能源股份有限公司 Method for releasing pressure and removing danger of rock burst
CN102839984A (en) * 2012-08-31 2012-12-26 山西晋城无烟煤矿业集团有限责任公司 Oversized-section underground supporting structure
CN102839984B (en) * 2012-08-31 2015-05-06 山西晋城无烟煤矿业集团有限责任公司 Oversized-section underground supporting structure
CN103256061B (en) * 2013-04-15 2015-04-22 辽宁工程技术大学 Coal-mining roadway scour-preventing and energy-absorbing combined metal support and assembly method
CN103256061A (en) * 2013-04-15 2013-08-21 辽宁工程技术大学 Coal-mining roadway scour-preventing and energy-absorbing combined metal support and assembly method
CN103557008A (en) * 2013-11-06 2014-02-05 中国矿业大学 Thin-walled metal structure and tunnel anchoring surrounding rock coupled anti-scour supporting structure
CN103557008B (en) * 2013-11-06 2015-08-12 中国矿业大学 The erosion control supporting and protection structure of walled metallic structure and the coupling of tunnel anchoring country rock
CN104594926A (en) * 2014-11-27 2015-05-06 太原理工大学 Rapid composite roof roadway support method for high-stress water guiding karst cave group
CN104989436A (en) * 2015-06-02 2015-10-21 辽宁工程技术大学 Energy-absorption type impact-resistant tunnel cross-section hydraulic support
CN105201524A (en) * 2015-09-10 2015-12-30 河南理工大学 Reserved anchor net and right-angled yieldable shed combined support technology for extremely soft coal seam roadway
CN106089271A (en) * 2016-08-17 2016-11-09 国投新集能源股份有限公司 A kind of tunnel filling formula composite support and construction method thereof
CN106246206A (en) * 2016-10-12 2016-12-21 辽宁工程技术大学 Mine stalk semicircular arch tunnel erosion control support
CN108180026A (en) * 2018-03-01 2018-06-19 河南理工大学 Method for protecting support is pressed in tunnel conversion under a kind of non-uniform traffic environment
CN108180026B (en) * 2018-03-01 2019-03-12 河南理工大学 Method for protecting support is pressed in tunnel conversion under a kind of non-uniform traffic environment
CN110344854A (en) * 2019-07-24 2019-10-18 辽宁工程技术大学 Press laneway support method to a kind of thump
CN111255492A (en) * 2020-01-15 2020-06-09 中国矿业大学 Method for evaluating support performance of anchor net cable at roadway side

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