CN104329113B - A floor drilling blasting loose seam floor relief gas drainage method - Google Patents

A floor drilling blasting loose seam floor relief gas drainage method Download PDF

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CN104329113B
CN104329113B CN 201410446247 CN201410446247A CN104329113B CN 104329113 B CN104329113 B CN 104329113B CN 201410446247 CN201410446247 CN 201410446247 CN 201410446247 A CN201410446247 A CN 201410446247A CN 104329113 B CN104329113 B CN 104329113B
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drilling
ground
floor
seam
gas
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CN 201410446247
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CN104329113A (en )
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穆朝民
石必明
伍清
齐娟
张文清
胡祖祥
高光发
程建圣
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安徽理工大学
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Abstract

本发明提供了一种地面钻孔松动爆破煤层底板卸压抽采瓦斯的方法,包括如下步骤:在工作面上覆地表沿着工作面推进方向凿钻多个地面钻井至煤层工作面底板以下2~3m处;采用“L形”钻孔技术,在地面钻井的底部沿着工作面推进方向钻凿水平钻孔连通两条地面钻井;将炸药填充于水平钻孔中,并用导爆索贯穿相邻炸药,向地面钻井中注水封孔;引爆炸药,炸药爆破松动煤层,产生大量裂隙,进而达到卸压增透的目的;将地面钻井和水平钻孔中的水抽出,瓦斯抽采管接入地面钻井,抽采所述煤层中的瓦斯。 The present invention provides a method of drilling loose ground blast pressure relief seam floor drainage gas, comprising the steps of: coating the surface work surface advanced along the face direction of drilling a drilling a plurality of ground floor to the seam face 2 at ~ 3m; with "L" drilling techniques, drilling in the ground along the bottom face of the advancing direction of the drilling of the horizontal drilling surface drilling two communication; horizontal explosives filled borehole, and a detonating cord through phase o explosives, drilling in the ground water sealing; detonated, blasting loose seam, a large amount of cracks, thus achieving the purpose of the relief AR; horizontal borehole drilling and to ground water extraction, gas drainage pipe access ground drilling, extraction of the gas coal. 本发明利用地面钻井,爆破工作面底板岩层,抽采煤层瓦斯,具有成本低,安全性高,简化抽采瓦斯工序等优点。 The present invention makes use of surface drilling, blasting rock face plate, evacuated coal seam gas, low cost, safety, a simplified gas extraction step and so on.

Description

一种地面钻孔松动爆破煤层底板卸压抽采瓦斯的方法 A floor drilling blasting loose seam floor relief gas drainage method

技术领域 FIELD

[0001 ]本发明涉及煤矿爆破技术领域,具体涉及一种地面钻孔松动爆破煤层底板卸压抽采瓦斯的方法。 [0001] The present invention relates to the field of mine blasting technology, particularly relates to a floor seam floor loose blasting method of drilling drainage Gas pressure relief.

背景技术 Background technique

[0002]高瓦斯低透气性煤层的开采常常伴有大量瓦斯涌出的难题,严重影响和制约着煤矿的安全开采。 [0002] exploitation of high gas content and low permeability coal seam gas emission is often accompanied by a large number of problems, severely hampering the safety of coal mining. 解决此难题的根本在于预抽煤层瓦斯,预抽瓦斯的方法主要通过井下的瓦斯抽采巷向工作面煤层进行钻孔预抽瓦斯,采用此种方法需要在工作面煤层底板岩层中布置两条瓦斯抽采巷道,必要时还需要在工作面煤层顶板岩层中再布置一条瓦斯抽采巷,此方法不仅巷道布置费用高昂,耗费时间长,劳动强度大,且容易发生事故。 Solve this puzzle lies in the pre-seam gas extraction, gas extraction method, mainly through pre-gas extraction Lane underground pre-drainage drilling coal seam gas to the face, using this method need to be arranged in two face coal seam floor strata Drift gas drainage, if necessary, need to be arranged in a roof strata gas extraction Lane seam face, this method is not only costly roadway layout, time-consuming, labor intensive, and prone to accidents.

发明内容 SUMMARY

[0003]为解决上述技术问题,本发明提供了一种地面钻孔松动爆破煤层底板卸压抽采瓦斯的方法,可以通过地面钻井的方式对工作面煤层进行松动爆破,对低透气性煤层进行卸压增透进而抽采煤层瓦斯。 [0003] In order to solve the above technical problem, the present invention provides a method of drilling loose ground floor seam Blasting pressure relief gas drainage can be made loose seam face by way of blasting ground drilling, low permeability coal seam Further relief AR evacuated coal seam gas.

[0004]为达到上述目的,本发明采用如下技术方案: [0004] To achieve the above object, the present invention adopts the following technical solution:

[0005] —种地面钻孔松动爆破煤层底板卸压抽采瓦斯的方法,包括如下步骤: [0005] - Ground seed drill floor seam loose blasting pressure relief gas drainage method, comprising the steps of:

[0006] (a)在工作面上覆地表沿着工作面推进方向凿钻多个地面钻井至煤层工作面底板以下2〜3m处; [0006] (a) drilling a drilling a plurality of ground floor to the seam face at 2~3m advanced along the working face surface overlying the face direction;

[0007] (b)利用“L形”钻孔技术,在步骤(a)中所述地面钻井的底部沿着工作面推进方向凿钻水平钻孔,所述水平钻孔连通相邻所述地面钻井; [0007] (b) using the "L" drilling techniques, in the step (a) in the bottom surface drilling along a drilling direction of advance of the face horizontal drilling, horizontal drilling said communication adjacent the ground drilling;

[0008] (C)将炸药填充于步骤(b)中所述水平钻孔中,并用导爆索贯穿相邻所述炸药; [0008] (C) filled with explosives in step (b) in said horizontal bore, and a detonating cord through the adjacent explosive;

[0009] (d)向步骤(a)中所述地面钻井中注水进行封孔; [0009] (d) to step (a) said sealing surface for drilling in water;

[0010] (e)引爆步骤(C)中所述炸药,所述炸药爆破松动所述煤层,产生大量裂隙; [0010] (e) detonating step (C) of said explosive, said explosive blasting out the seam, generating a large number of fractures;

[0011 ] (f)将所述地面钻井和所述水平钻孔中的水抽出,瓦斯抽采管接入所述地面钻井,抽采所述煤层中的瓦斯。 [0011] (f) drilling the ground and the level of water out of the borehole, the gas drainage pipe access ground drilling, extraction of the gas coal.

[0012]本发明所述的地面钻孔松动爆破煤层底板卸压抽采瓦斯的方法,其中,步骤(a)中所述的地面钻孔间距为200〜300m。 [0012] The present invention drilling ground loose blasting the seam floor of the pressure relief gas drainage method, wherein step (a) in the ground bore pitch 200~300m.

[0013]本发明所述的地面钻孔松动爆破煤层底板卸压抽采瓦斯的方法,其中,步骤(a)中所述地面钻井直径为75〜145_。 [0013] The present invention drilling ground loose blasting the seam floor of the pressure relief gas drainage method, wherein step (a) of said ground drill diameter 75~145_.

[0014]本发明所述的地面钻孔松动爆破煤层底板卸压抽采瓦斯的方法,其中,步骤(b)中所述的水平钻孔直径与地面钻井直径相同。 [0014] The present invention drilling ground loose blasting the seam floor of the pressure relief gas drainage method, wherein step (b) in said horizontal bore diameter and the same diameter as the drilling floor.

[0015]本发明所述的地面钻孔松动爆破煤层底板卸压抽采瓦斯的方法,其中,步骤(C)中所述炸药为水胶炸药或乳化炸药。 Blasting loose ground drilling method seam floor drainage Gas pressure relief of the [0015] present invention, wherein step (C) of the explosive charge is of the water gel or emulsion explosive.

[0016]本发明所述的地面钻孔松动爆破煤层底板卸压抽采瓦斯的方法,其中,步骤(d)中所述的地面钻井注水封孔至与地面平齐或水柱垂高超过300m。 [0016] The present invention drilling ground loose blasting the seam floor of the pressure relief gas drainage method, wherein step (d) in said sealing surface drilling water to flush with the ground or hanging water column higher than 300m.

[0017]本发明与现有的预抽瓦斯的方法对比,无需掘进瓦斯抽采巷且减少了抽采钻孔的布置,具有成本低,工期短,劳动量轻,高效、安全等优点,同时还大大简化了瓦斯抽采过程;步骤(a)中所述的地面钻孔间距为200〜300m,有利于兼顾水平孔的平直性和地面钻井的数量;步骤(d)中所述的地面钻井注水封孔至与地面平齐或水柱垂高超过300m,以此爆炸封孔压力和瓦斯不至于外泄。 [0017] The present invention is in contrast to the conventional method of pre-pumping gas, gas drainage gateway without tunneling and reduces drainage drilling arranged, low cost, short construction period, labor lightweight, efficient, safe, etc., while also greatly simplifies the process gas drainage; step (a) in the ground bore pitch 200~300m, and ground with a number of straight drilling holes facilitates both horizontal; step (d) in the ground drilling sealing water to flush with the ground or water column vertical height of more than 300m, thus sealing the explosion pressure and gas will not leak.

附图说明 BRIEF DESCRIPTION

[0018]图1为本发明地面钻孔松动爆破煤层底板卸压抽采瓦斯的方法的示意图; [0018] FIG. 1 is a schematic loose ground drilling method of blasting the seam floor drainage Gas vented to the present invention;

[0019]图2为本发明地面钻孔松动爆破煤层底板卸压抽采瓦斯的方法的效果示意图。 [0019] FIG. 2 is a schematic loose ground drilling method of blasting the seam floor of the vented gas drainage effect of the present invention.

[0020] I 一地面钻井;2—水柱;3—岩层;4 一煤层;5—水平钻孔;6—雷管;7—导爆索;8—水胶炸药;9一碎石;1—裂隙;11 一地面。 [0020] I a drilling floor; 2- water column; 3- formation; 4 a coal seam; 5- horizontal drilling; 6- detonator; 7- detonating cord; 8- watergel explosive; 9 a gravel; 1- fissure ; 11 a ground.

[0021]下面结合具体实施例和附图对本发明地面钻孔松动爆破煤层底板卸压抽采瓦斯的方法作进一步说明。 [0021] The following examples and with reference to specific embodiments drawings methods drilling loose blasting the seam floor of the floor according to the present invention, the pressure relief gas drainage is further described.

具体实施方式 detailed description

[0022] 实施例1 [0022] Example 1

[0023]本实施例一种地面钻孔松动爆破煤层底板卸压抽采瓦斯的方法,包括以下步骤: [0023] The present embodiment of a ground drill floor seam loose blasting pressure relief gas drainage method, comprising the steps of:

[0024] (a)在工作面上覆地表沿着工作面推进方向每隔200m凿钻直径为75mm的地面钻井I至煤层4工作面底板以下2m处; [0024] (a) in the advancing direction of the face surface overlying the working surface 200m every drilling diameter of the drilling 75mm I to the ground face floor seam 4 at 2m or less;

[0025] (b)利用“L形”钻孔技术,在地面钻井I的底部沿着工作面推进方向凿钻直径为75mm水平钻孔5,水平钻孔5连通相邻地面钻井I; [0025] (b) using the "L" drilling techniques, drilling in the ground along the advancing direction I of the bottom face drilling horizontal drilling 75mm diameter 5, 5 adjacent to the horizontal drilling surface drilling communication I;

[0026] (c)将炸药8填充于步骤(b)中所述水平钻孔5中,并用导爆索7贯穿相邻炸药8,炸药8为水胶炸药; [0026] (c) 8 explosives packed in step (b) in said horizontal bore 5, and 7 with a detonating cord through 8 adjacent explosives, water gel explosives, dynamite 8;

[0027] (d)向步骤(b)中地面钻井I中注水封孔至与地面11平齐; [0027] (d) to step (b) is ground in water drilling I sealing 11 is flush with the ground to;

[0028] (e)使用雷管6引爆步骤(c)中炸药8,炸药8爆炸松动煤层4,产生大量裂隙1; [0028] (e) using the detonator detonating step 6 (c), 8 explosives, dynamite explosion 8 loose seam 4, a large amount of cracks 1;

[0029] (f)将地面钻井I和水平钻孔5中的水抽出,瓦斯抽采管接入地面钻井I,抽采煤层4中的瓦斯。 [0029] (f) drilling the ground and the horizontal drilling I 5 water extraction, gas drainage drilling pipe access floor I, pumping gas in coal layer 4.

[0030] 实施例2 [0030] Example 2

[0031]本实施例一种地面钻孔松动爆破煤层底板卸压抽采瓦斯的方法,包括以下步骤: [0031] The present embodiment of a ground drill floor seam loose blasting pressure relief gas drainage method, comprising the steps of:

[0032] (a)在工作面上覆地表沿着工作面推进方向每隔300m凿钻直径为145mm的地面钻井I至煤层4工作面底板以下3m处; [0032] (a) coating the surface of the ground advanced along the working face every 300m drilling direction of the drilling of 145mm diameter surface 4 to face floor seam I at 3m or less;

[0033] (b)利用“L形”钻孔技术,在地面钻井I的底部沿着工作面推进方向凿钻直径为145mm水平钻孔5,水平钻孔5连通相邻地面钻井I ; [0033] (b) using the "L" drilling techniques, drilling in the ground along the advancing direction I of the bottom face drilling horizontal drilling diameter 145mm 5, 5 adjacent to the horizontal drilling surface drilling communication I;

[0034] (c)将炸药8填充于步骤(b)中所述水平钻孔5中,并用导爆索7贯穿相邻炸药8,炸药8为乳化炸药; [0034] (c) 8 explosives packed in step (b) in said horizontal bore 5, and 7 through with the adjacent detonating cord explosive 8, 8 explosive emulsion explosive;

[0035] (d)向步骤(b)中地面钻井I中注水封孔至水柱2垂高超过300m; [0035] (d) to step (b) is ground in water drilling I to plugging than 300m vertical height of water column 2;

[0036] (e)使用雷管6引爆步骤(c)中炸药8,炸药8爆炸松动煤层4,产生大量裂隙1; [0036] (e) using the detonator detonating step 6 (c), 8 explosives, dynamite explosion 8 loose seam 4, a large amount of cracks 1;

[0037] (f)将地面钻井I和水平钻孔5中的水抽出,瓦斯抽采管接入地面钻井I,抽采煤层4中的瓦斯。 [0037] (f) drilling the ground and the horizontal drilling I 5 water extraction, gas drainage drilling pipe access floor I, pumping gas in coal layer 4.

[0038]在爆破过程中要保留人员和机械设备距离地面钻井30m的安全距离,防止爆破过程中的水、渣粒破坏设备或伤到人员。 [0038] In the blasting process to retain the drilling machinery and personnel safety distance of 30m from the ground, to prevent the water in the blasting process, the slag particles to equipment damage or personnel injury.

[0039]以上所述的实施例仅仅是对本发明的优选实施方式进行描述,并非对本发明的范围进行限定,在不脱离本发明设计精神的前提下,本领域普通技术人员对本发明的技术方案作出的各种变形和改进,均应落入本发明权利要求书确定的保护范围内。 Example [0039] The above are merely preferred embodiments of the present invention will be described, not the scope of the present invention are defined, those of ordinary skill in the art to make technical solution of the present invention without departing from the spirit of the design of the present invention. various changes and modifications shall fall within the claims of the invention within the scope of protection determined.

Claims (5)

  1. 1.一种地面钻孔松动爆破煤层底板卸压抽采瓦斯的方法,其特征在于,包括如下步骤: (a)在工作面上覆地表沿着工作面推进方向凿钻多个地面钻井(I)至煤层(4)工作面底板以下2〜3m处; (b)利用“L形”钻孔技术,在步骤(a)中所述地面钻井⑴的底部沿着工作面推进方向凿钻水平钻孔(5),所述水平钻孔(5)连通相邻所述地面钻井(I); (c)将炸药(8)填充于步骤(b)中所述水平钻孔(5)中,并用导爆索(7)贯穿相邻所述炸药⑶; (d)向步骤(a)中所述地面钻井(I)中注水进行封孔; (e)引爆步骤(c)中所述炸药(8),所述炸药(8)爆破松动所述煤层(4),产生大量裂隙(10); (f)将所述地面钻井(I)和所述水平钻孔(5)中的水抽出,瓦斯抽采管接入所述地面钻井(I),抽采所述煤层(4)中的瓦斯; 步骤(a)中所述的地面钻井(I)间距为200〜300m。 A ground drill floor seam loose blasting pressure relief gas drainage method, characterized by comprising the steps of: (a) coating the surface of the ground advanced along the working face in the direction of drilling a drilling a plurality of ground (I ) to the seam (4) at the bottom face 2~3m less; (b) the use of "L" drilling techniques, in the step (a) in the bottom surface drilling ⑴ horizontal advancing direction of the drill along the drilling face holes (5), said horizontal bore (5) in communication adjacent said drilling floor (I); (c) the explosive (8) filling the horizontal bore in the step (b), (5), and with detonating cord (7) through the adjacent explosive ⑶; (d) to step (a) of said ground drill (I) is subjected to a sealing water; (e) detonating step (c) in the explosive (8 ), the explosive (8) blasting out the seam (4), a large amount of cracks (10); (f) drilling the ground water (I) and the horizontal bore (5) in the withdrawn gas access to the drainage pipe ground drilling (I), the coal gas drainage (4); step (a) of said ground drill (I) pitch 200~300m.
  2. 2.根据权利要求1所述地面钻孔松动爆破煤层底板卸压抽采瓦斯的方法,其特征在于:步骤(a)中所述地面钻井(I)直径为75〜145_。 According to the claim 1 ground coal floor loose blasting method of drilling drainage gas pressure relief, characterized by the steps of: (a) said ground drill (I) 75~145_ diameter.
  3. 3.根据权利要求2所述地面钻孔松动爆破煤层底板卸压抽采瓦斯的方法,其特征在于:步骤(b)中所述水平钻孔(5)直径与所述地面钻井(I)直径相同。 The drill according to claim 2 ground floor seam loose blasting method of the pressure relief gas drainage, characterized in that: said step of horizontal drilling (5) (b) the diameter of the drill floor (I) diameter the same.
  4. 4.根据权利要求3所述地面钻孔松动爆破煤层底板卸压抽采瓦斯的方法,其特征在于:步骤(c)中所述炸药(8)为水胶炸药或乳化炸药。 The ground according to claim 3 borehole blasting loose seam floor of the pressure relief gas drainage method, characterized in that: step (c) in the explosive (8) is a water gel explosive or emulsion explosive.
  5. 5.根据权利要求1-4任意一项所述地面钻孔松动爆破煤层底板卸压抽采瓦斯的方法,其特征在于:步骤(d)中所述的地面钻井(I)注水封孔至与地面(11)平齐或水柱(2)垂高超过300m。 According to any one of claims 1-4 ground drilling method loose blasting the seam floor of the drainage gas pressure relief, characterized in that: step (d) in said ground drill (I) to the water and plugging ground (11) or the flush water column (2) vertical height of more than 300m.
CN 201410446247 2014-09-03 2014-09-03 A floor drilling blasting loose seam floor relief gas drainage method CN104329113B (en)

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CN107120137A (en) * 2017-07-12 2017-09-01 安徽理工大学 Extraction method adopting deep-hole presplitting blasting along seam floor for coal roadway driving

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