WO2014101653A1 - Drilling hole sealing apparatus and method using flexible filling material - Google Patents
Drilling hole sealing apparatus and method using flexible filling material Download PDFInfo
- Publication number
- WO2014101653A1 WO2014101653A1 PCT/CN2013/089078 CN2013089078W WO2014101653A1 WO 2014101653 A1 WO2014101653 A1 WO 2014101653A1 CN 2013089078 W CN2013089078 W CN 2013089078W WO 2014101653 A1 WO2014101653 A1 WO 2014101653A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- expansion bag
- pipe
- pleated expansion
- pleated
- filling material
- Prior art date
Links
- 238000007789 sealing Methods 0.000 title claims abstract description 38
- 238000005553 drilling Methods 0.000 title claims abstract description 35
- 239000000463 material Substances 0.000 title claims abstract description 34
- 238000000034 method Methods 0.000 title claims abstract description 21
- 239000002184 metal Substances 0.000 claims abstract description 23
- 239000002002 slurry Substances 0.000 claims abstract description 13
- 238000002347 injection Methods 0.000 claims abstract description 6
- 239000007924 injection Substances 0.000 claims abstract description 6
- 238000000605 extraction Methods 0.000 claims description 23
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 16
- 239000011358 absorbing material Substances 0.000 claims description 7
- 238000006243 chemical reaction Methods 0.000 claims description 4
- 239000004927 clay Substances 0.000 claims description 3
- 229920001971 elastomer Polymers 0.000 claims description 3
- 239000010881 fly ash Substances 0.000 claims description 3
- 239000011440 grout Substances 0.000 claims 1
- 239000003245 coal Substances 0.000 abstract description 7
- 239000012466 permeate Substances 0.000 abstract 2
- 230000000694 effects Effects 0.000 description 7
- 239000003566 sealing material Substances 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 3
- 239000004568 cement Substances 0.000 description 2
- 229920002635 polyurethane Polymers 0.000 description 2
- 239000004814 polyurethane Substances 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 239000011343 solid material Substances 0.000 description 2
- 229920000742 Cotton Polymers 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000011268 mixed slurry Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000002861 polymer material Substances 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000004537 pulping Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/10—Sealing or packing boreholes or wells in the borehole
- E21B33/13—Methods or devices for cementing, for plugging holes, crevices or the like
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/10—Sealing or packing boreholes or wells in the borehole
- E21B33/12—Packers; Plugs
- E21B33/127—Packers; Plugs with inflatable sleeve
- E21B33/1277—Packers; Plugs with inflatable sleeve characterised by the construction or fixation of the sleeve
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F7/00—Methods or devices for drawing- off gases with or without subsequent use of the gas for any purpose
Definitions
- the invention relates to a drilling and sealing device and a method for a flexible filling material, belonging to the field of gas control technology and equipment in a coal mine underground area, and particularly suitable for drilling and sealing a hole in a gas drainage hole with a large water content.
- the effective sealing of gas drainage holes is the key to gas drainage in coal mines.
- China's coal mines generally use polyurethane, organic resin materials or cement-based sealing materials. These materials are mixed by hand to mix a variety of chemical slurry. After mixing, they are adsorbed by cotton cloth and wrapped in gas drainage pipes, and inserted with gas drainage pipes. Draw holes. Or directly injected into the extraction hole through the grouting pump. Since the mixed slurry has started to foam and expand during the advancement of the material in the extraction hole, after the reaction is completed, the generated drilling sealing material is solid material, and the solid sealing is generated. There are a lot of pores and fissures in the material, which affects the gas drainage effect during the gas extraction process.
- the existing gas drainage drilling sealing device or method assumes that the drilling hole is water-free or the water content is small, and the hole sealing material is ignored due to the influence of the water drilling hole sealing material.
- most of the existing boreholes are drilled by hydraulic slagging, and the boreholes form the water in the back area.
- the polyurethane and organic resin polymer materials are easy to shrink and deform after being in contact with water, which cannot effectively block the boreholes;
- the influence of internal water causes the sealing quality of cement materials to be poor, which may easily lead to sealing failure. Therefore, in order to solve the various sealing technology problems of the above gas drainage drilling holes, it is urgent to seek a new gas drainage drilling sealing method, especially to solve the effect of water in the drilling hole on the sealing effect to meet the coal mine drilling. Hole sealing requirements.
- the object of the present invention is to provide a drilling and sealing device and method for a flexible filling material which is simple in structure, convenient in operation, low in cost and good in effect, in view of the problems existing in the prior art.
- the drilling and sealing device and method for the flexible filling material of the present invention comprises a pleated expansion bag set on a gas drainage pipe, and the front and rear metal fixing sleeves are provided at both ends of the pleated expansion bag, and the pleated expansion bag a grouting pipe which is inserted into the bottom of the pleated expansion bag is inserted above the gas drainage pipe, and a grouting pipe which is inserted into the front part of the pleated expansion bag is inserted in the pleated expansion bag, and the pleat is inserted into the front of the pleated expansion bag; a plurality of small holes are formed in the bag wall of the expansion bag; the front metal fixing sleeve is drilled with a hole for the gas drainage pipe to pass through, and the rear metal fixing sleeve is respectively drilled with a gas extraction pipe, a grouting pipe, and a back Three holes through which the slurry tube passes.
- the pleated expansion bag is made of rubber and has a length of 1.5 to 5 m; a plurality of small holes formed in the wall of the pleated expansion bag have a diameter of 1 cm.
- the device and method for drilling and sealing a flexible filling material of the present invention comprises the following steps: a.
- the pleated expansion bag with a plurality of small holes in the wall of the bag is set on the gas drainage pipe, and the two ends of the pleated expansion bag are respectively fixed by the front and rear metal fixing sleeves;
- the inorganic water absorbing material to be injected is fly ash or clay.
- the invention solves the problem that a large number of holes and cracks exist in the solid material generated by the reaction of the existing gas drainage drilling plugging material, and the reaction is quickly uncontrollable, and the sealing material is loaded into the drilling hole, which is not easy to achieve mixing and mixing, gas
- There is a large amount of water inside the extraction hole which greatly affects the sealing hole sealing technology such as the sealing effect of the existing gas drainage drilling sealing method, can realize the remote control of the sealing process, and does not require equipment such as a mixer. Mix the materials. Through the water absorption characteristics of the inorganic water absorbing material, the material can be completely reacted, and the formed flexible filling material realizes the hole sealing principle of the liquid sealing gas.
- the surface of the pleated expansion bag is covered with pleats, which can adapt to the uneven surface of the inner hole of the drilled hole; the pleated expansion bag has a plurality of small holes formed therein, and after the bag is filled, the flexible filling material can penetrate into the wall surface of the drill hole from the small hole, and the drilling hole can be combined In one piece, the pleated expansion bag can achieve a maximum expansion rate of 30% when filled with material.
- the method has the advantages of simple method, good sealing effect, high gas extraction concentration, long extraction time, simple operation and low cost, and has wide practicality in the technical field.
- Figure 1 is a schematic view of an embodiment of a borehole sealing of the present invention.
- Figure 2 is a schematic view of the structure of the present invention.
- a flexible filling material drilling and sealing device and method of the present invention comprises a pleated expansion bag 5 which is set on a gas extraction pipe 2, and a front metal fixing sleeve 6 is provided at both ends of the pleated expansion bag 5.
- the rear metal fixing sleeve 7 the pleated expansion bag 5 is inserted above the gas extraction pipe 2 and inserted into the slurry return pipe 4 into the bottom of the pleated expansion bag 5, and the pleated expansion bag 5 is inserted under the gas extraction pipe 2 Entering the grouting pipe 3 at the front of the pleated expansion bag 5, said pleats
- the bag wall of the expansion bag 5 is provided with a plurality of small holes 9 having a diameter of 1 cm; the length of the pleated expansion bag 5 is 1.5-5 m, and the bag is made of rubber having expandability and flexibility, and the pleated expansion bag is filled with the maximum material.
- the expansion rate can reach 30%.
- the front metal fixing sleeve 7 is drilled with a hole for passing the gas extraction pipe 2, and the rear metal fixing sleeve 6 is respectively drilled with three holes for passing the gas extraction pipe 2, the grouting pipe 3 and the reclaiming pipe 4. Holes.
- the drilling and sealing method of the flexible filling material realized by the above device is as follows:
- the pleated expansion bag 5 with a plurality of small holes 9 in the wall of the bag is first set on the gas extraction pipe 2, and the small hole 9 on the wall of the bag of the pleated expansion bag is lcm in diameter.
- the diameter of the pleated expansion bag 5 is slightly larger than the diameter of the drill hole 1; the two ends of the pleated expansion bag 5 are fixed to the gas extraction pipe 2 by the front metal fixing sleeve 6 and the rear metal fixing sleeve 7, respectively, and the front end of the gas drainage pipe 2
- the exposed metal fixing sleeve 7 has a length of lm, the gas drainage tube 2 has a diameter of 60 mm, and the reducting tube 4 and the grouting tube 3 have a diameter of 19 mm;
- the grouting pipe 3 and the grouting pipe 4 are respectively passed through the metal fixing sleeve 6 connected at the rear end of the pleated expansion bag 5, and inserted into the pleated expansion bag 5 having a length of 1.5-5 m, and the grouting pipe 3 is inserted into the pleated expansion bag.
- the length in 5 is 0.2m, and the length of the repulping tube 4 inserted into the pleated expansion bag 5 is 1.2m ⁇ 4.5m;
- the gas extraction pipe 2 equipped with the pleated expansion bag 5 is sent into the drill hole 1, and the material is filled into the pleated expansion bag 5 through the grouting pipe 3, and when the slurry returning pipe 4 is repulped, the injection is stopped, and the filling is completed.
- the sealing hole of the extraction hole 1 is formed by mixing and mixing the inorganic water-absorbing material with a mass percentage of 1:10 and water.
- the inorganic water absorbing materials noted include fly ash and clay.
- the pleated expansion bag 5 contains a plurality of small holes 9, the flexible filling material can be oozing out from the small holes 9, infiltrating into the cracks around the hole 1, and fully integrated with the coal wall, thereby effectively sealing the drilling hole 1.
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- Pipe Accessories (AREA)
Abstract
A drilling hole sealing method and apparatus using flexible filling material. The apparatus comprises a gas drainage pipe (2), a bellows expansion bag (5), a slurry injection pipe (3), a slurry return pipe (4), and metal fixing sleeves (6, 7). The gas drainage pipe (2) passes through the bellows expansion bag (5) and the metal fixing sleeves (6, 7) connected at two ends of the gas drainage pipe (2), and fixes the two metal fixing sleeves (6, 7) on the gas drainage pipe (2). Next, the gas drainage pipe (2) and other gas drainage pipes are connected and sent inside a drilling hole (1). A flexible filling material is injected inside the bellows expansion bag (5) through the slurry injection pipe (3). Stop injection when slurry returns in the slurry return pipe (4). The bellows expansion bag (5) comprises several small holes (9), and the flexible filling material may permeate into a coal wall near the bellows expansion bag (5) through the small holes (9), is fully combined with the coal wall, and permeates into cracks around the drilling hole, so as to implement effective sealing for drainage drilling holes.
Description
种柔性充填材料钻孔封孔装置及方法 技术领域 Flexible filling material drilling and sealing device and method
本发明涉及一种柔性充填材料钻孔封孔装置及方法， 属于煤矿井下区域瓦斯治理技 术及装备领域， 尤其适用于在含水量较大的瓦斯抽采钻孔内进行钻孔封孔作业。 The invention relates to a drilling and sealing device and a method for a flexible filling material, belonging to the field of gas control technology and equipment in a coal mine underground area, and particularly suitable for drilling and sealing a hole in a gas drainage hole with a large water content.
背景技术 Background technique
瓦斯抽采钻孔的有效封孔是煤矿井下瓦斯抽采的关键。 目前我国煤矿普遍使用聚氨 酯、 有机树脂材料或水泥类封孔材料， 这些材料通过手工搅拌混合多种化学浆液， 搅拌 后利用棉布进行吸附并包裹在瓦斯抽采管道上， 随瓦斯抽采管道一起插入抽采孔。 或通 过注浆泵直接注入抽采孔， 由于这些材料在抽采孔内推进过程中混合浆液已经开始发泡 膨胀， 反应完全后， 生成的钻孔封孔材料均是固体材料， 生成固体封孔材料体内会有大 量孔隙和裂隙， 在抽采瓦斯过程中， 影响瓦斯抽采效果。 且现有的瓦斯抽采钻孔封孔装 置或方法， 都是假设钻孔无水或含水较少时， 忽略水的钻孔封孔材料的影响进行钻孔封 孔。 然而， 现有多数钻孔采用水力排渣的方式打钻， 钻孔形成后里面积水， 聚氨酯类、 有机树脂类高分子材料遇水后容易收縮变形， 无法有效封堵钻孔； 此外钻孔内水的影响 导致水泥类材料封孔质量差， 容易导致封孔失败。 因此， 为了解决以上瓦斯抽采钻孔的 各项封孔技术难题， 急需寻求全新的瓦斯抽采钻孔封孔方法， 特别是解决钻孔内水对封 孔效果的影响， 以满足煤矿井下钻孔封孔的要求。 The effective sealing of gas drainage holes is the key to gas drainage in coal mines. At present, China's coal mines generally use polyurethane, organic resin materials or cement-based sealing materials. These materials are mixed by hand to mix a variety of chemical slurry. After mixing, they are adsorbed by cotton cloth and wrapped in gas drainage pipes, and inserted with gas drainage pipes. Draw holes. Or directly injected into the extraction hole through the grouting pump. Since the mixed slurry has started to foam and expand during the advancement of the material in the extraction hole, after the reaction is completed, the generated drilling sealing material is solid material, and the solid sealing is generated. There are a lot of pores and fissures in the material, which affects the gas drainage effect during the gas extraction process. Moreover, the existing gas drainage drilling sealing device or method assumes that the drilling hole is water-free or the water content is small, and the hole sealing material is ignored due to the influence of the water drilling hole sealing material. However, most of the existing boreholes are drilled by hydraulic slagging, and the boreholes form the water in the back area. The polyurethane and organic resin polymer materials are easy to shrink and deform after being in contact with water, which cannot effectively block the boreholes; The influence of internal water causes the sealing quality of cement materials to be poor, which may easily lead to sealing failure. Therefore, in order to solve the various sealing technology problems of the above gas drainage drilling holes, it is urgent to seek a new gas drainage drilling sealing method, especially to solve the effect of water in the drilling hole on the sealing effect to meet the coal mine drilling. Hole sealing requirements.
发明内容 Summary of the invention
技术问题： 本发明的目的是针对已有技术中存在的问题， 提供一种结构简单、 操作 方便、 成本低、 效果好的柔性充填材料钻孔封孔装置及方法。 Technical Problem: The object of the present invention is to provide a drilling and sealing device and method for a flexible filling material which is simple in structure, convenient in operation, low in cost and good in effect, in view of the problems existing in the prior art.
技术方案： 本发明的柔性充填材料钻孔封孔装置及方法， 包括套装在在瓦斯抽采管 上的褶皱膨胀袋， 褶皱膨胀袋的两端均设有前、 后金属固定套， 褶皱膨胀袋内位于瓦斯 抽采管上方插装有进入到褶皱膨胀袋底部的回浆管， 褶皱膨胀袋内位于瓦斯抽采管下方 插装有进入到褶皱膨胀袋前部的注浆管； 所述的褶皱膨胀袋的袋壁上开有若干小孔； 所 述前金属固定套上钻有使瓦斯抽采管穿过的孔，后金属固定套上分别钻有使瓦斯抽采管、 注浆管、 回浆管穿过的三个孔。 Technical Solution: The drilling and sealing device and method for the flexible filling material of the present invention comprises a pleated expansion bag set on a gas drainage pipe, and the front and rear metal fixing sleeves are provided at both ends of the pleated expansion bag, and the pleated expansion bag a grouting pipe which is inserted into the bottom of the pleated expansion bag is inserted above the gas drainage pipe, and a grouting pipe which is inserted into the front part of the pleated expansion bag is inserted in the pleated expansion bag, and the pleat is inserted into the front of the pleated expansion bag; a plurality of small holes are formed in the bag wall of the expansion bag; the front metal fixing sleeve is drilled with a hole for the gas drainage pipe to pass through, and the rear metal fixing sleeve is respectively drilled with a gas extraction pipe, a grouting pipe, and a back Three holes through which the slurry tube passes.
所述褶皱膨胀袋的由橡胶制成， 其长度为 1.5-5m; 所述褶皱膨胀袋的袋壁上开设的 若干小孔直径为 lcm。 The pleated expansion bag is made of rubber and has a length of 1.5 to 5 m; a plurality of small holes formed in the wall of the pleated expansion bag have a diameter of 1 cm.
本发明的柔性充填材料钻孔封孔装置及方法， 包括如下步骤：
a. 将袋壁上开有若干小孔的褶皱膨胀袋套装在瓦斯抽采管上，褶皱膨胀袋的两端分 别用前、 后金属固定套固定； The device and method for drilling and sealing a flexible filling material of the present invention comprises the following steps: a. The pleated expansion bag with a plurality of small holes in the wall of the bag is set on the gas drainage pipe, and the two ends of the pleated expansion bag are respectively fixed by the front and rear metal fixing sleeves;
b. 分别将注浆管和回浆管穿过褶皱膨胀袋的前金属固定套， 插入到长度为 1.5-5m 的褶皱膨胀袋内， 注浆管插入褶皱膨胀袋内的长度为 0.2m， 回浆管插入褶皱膨胀袋内的 长度为 1.2m~4.5m; b. Pass the grouting pipe and the grouting pipe through the front metal fixing sleeve of the pleated expansion bag and insert them into the pleated expansion bag of length 1.5-5m. The length of the grouting pipe inserted into the pleated expansion bag is 0.2m. The length of the slurry tube inserted into the pleated expansion bag is 1.2m~4.5m;
c. 将装有褶皱膨胀袋的瓦斯抽采管送入钻孔内，通过注浆管向褶皱膨胀袋内柔性充 填材料， 待回浆管回浆时， 停止注入， 完成对抽采钻孔的封孔； 所述注入的柔性充填材 料由质量百分比为 1:10的无机吸水材料和水混合反应而成。 c. Feed the gas extraction pipe with the pleated expansion bag into the drill hole, and fill the flexible filling material into the pleated expansion bag through the grouting pipe. When the slurry returning to the slurry returning, stop the injection and complete the drilling of the drilling hole. Sealing; the injected flexible filling material is formed by mixing and mixing inorganic water absorbing material with a mass percentage of 1:10 and water.
所注入的无机吸水材料为粉煤灰、 粘土。 The inorganic water absorbing material to be injected is fly ash or clay.
有益效果： 本发明解决了现有瓦斯抽采钻孔封孔材料反应生成的固体材料内部存在 大量孔洞和裂隙， 反应迅速不可控、 将封孔材料装入钻孔， 不容易实现搅拌混合、 瓦斯 抽采孔内部存在大量的水， 极大地影响了现有瓦斯抽采钻孔封孔方法的封孔效果等钻孔 封孔技术难题， 能实现封孔过程的远程控制， 且不需要搅拌机等装备对材料混合。 通过 无机吸水材料的吸水特性， 就能使材料完全反应， 生成的柔性充填材料实现了液体封孔 气体的钻孔封孔原理。 褶皱膨胀袋表面布满褶皱， 能够适应钻孔内部凸凹不平表面； 褶 皱膨胀袋上面开有若干小孔， 袋子注满后柔性充填材料能够从小孔渗透入钻孔壁面， 和 钻孔能够结合为一体， 褶皱膨胀袋注满材料后最大膨胀率可达到 30%。 其方法简单、 封 孔效果好、 瓦斯抽采浓度高、 抽采时间长、 操作简单、 成本低， 在本技术领域内具有广 泛的实用性。 Advantageous Effects: The invention solves the problem that a large number of holes and cracks exist in the solid material generated by the reaction of the existing gas drainage drilling plugging material, and the reaction is quickly uncontrollable, and the sealing material is loaded into the drilling hole, which is not easy to achieve mixing and mixing, gas There is a large amount of water inside the extraction hole, which greatly affects the sealing hole sealing technology such as the sealing effect of the existing gas drainage drilling sealing method, can realize the remote control of the sealing process, and does not require equipment such as a mixer. Mix the materials. Through the water absorption characteristics of the inorganic water absorbing material, the material can be completely reacted, and the formed flexible filling material realizes the hole sealing principle of the liquid sealing gas. The surface of the pleated expansion bag is covered with pleats, which can adapt to the uneven surface of the inner hole of the drilled hole; the pleated expansion bag has a plurality of small holes formed therein, and after the bag is filled, the flexible filling material can penetrate into the wall surface of the drill hole from the small hole, and the drilling hole can be combined In one piece, the pleated expansion bag can achieve a maximum expansion rate of 30% when filled with material. The method has the advantages of simple method, good sealing effect, high gas extraction concentration, long extraction time, simple operation and low cost, and has wide practicality in the technical field.
附图说明 DRAWINGS
图 1是本发明的钻孔封孔实施例示意图。 BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is a schematic view of an embodiment of a borehole sealing of the present invention.
图 2是本发明的结构示意图。 Figure 2 is a schematic view of the structure of the present invention.
图中： 1 钻孔， 2 瓦斯抽采管， 3—注浆管， 4一回浆管， 5 褶皱膨胀袋， 6—前 金属固定套， 7—后金属固定套， 8—褶皱， 9 小孔。 In the picture: 1 drilling, 2 gas drainage pipe, 3 - grouting pipe, 4 one pulping pipe, 5 pleated expansion bag, 6 - front metal fixing sleeve, 7 - rear metal fixing sleeve, 8 - fold, 9 small hole.
具体实施方式 detailed description
下面结合附图对本发明的实施例作进一步的描述： The embodiments of the present invention are further described below with reference to the accompanying drawings:
在图 1中， 本发明的柔性充填材料钻孔封孔装置及方法， 包括套装在在瓦斯抽采管 2上的褶皱膨胀袋 5， 褶皱膨胀袋 5的两端均设有前金属固定套 6、 后金属固定套 7， 褶 皱膨胀袋 5内位于瓦斯抽采管 2上方插装有进入到褶皱膨胀袋 5底部的回浆管 4，褶皱膨 胀袋 5内位于瓦斯抽采管 2下方插装有进入到褶皱膨胀袋 5前部的注浆管 3，所述的褶皱
膨胀袋 5的袋壁上开有若干直径为 1cm的小孔 9; 褶皱膨胀袋 5的长度为 1.5-5m， 袋子 由具有膨胀性、 柔韧性的橡胶做成， 褶皱膨胀袋注满材料后最大膨胀率可达到 30%。 所 述前金属固定套 7上钻有使瓦斯抽采管 2穿过的孔， 后金属固定套 6上分别钻有使瓦斯 抽采管 2、 注浆管 3、 回浆管 4穿过的三个孔。 In Fig. 1, a flexible filling material drilling and sealing device and method of the present invention comprises a pleated expansion bag 5 which is set on a gas extraction pipe 2, and a front metal fixing sleeve 6 is provided at both ends of the pleated expansion bag 5. , the rear metal fixing sleeve 7, the pleated expansion bag 5 is inserted above the gas extraction pipe 2 and inserted into the slurry return pipe 4 into the bottom of the pleated expansion bag 5, and the pleated expansion bag 5 is inserted under the gas extraction pipe 2 Entering the grouting pipe 3 at the front of the pleated expansion bag 5, said pleats The bag wall of the expansion bag 5 is provided with a plurality of small holes 9 having a diameter of 1 cm; the length of the pleated expansion bag 5 is 1.5-5 m, and the bag is made of rubber having expandability and flexibility, and the pleated expansion bag is filled with the maximum material. The expansion rate can reach 30%. The front metal fixing sleeve 7 is drilled with a hole for passing the gas extraction pipe 2, and the rear metal fixing sleeve 6 is respectively drilled with three holes for passing the gas extraction pipe 2, the grouting pipe 3 and the reclaiming pipe 4. Holes.
利用上述装置实现的柔性充填材料钻孔封孔方法如下： The drilling and sealing method of the flexible filling material realized by the above device is as follows:
a. 按常规施工好钻孔 1， 先将袋壁上开有若干小孔 9的褶皱膨胀袋 5套装在瓦斯抽 采管 2上，褶皱膨胀袋 5袋壁上的小孔 9直径为 lcm，褶皱膨胀袋 5的直径略大于钻孔 1 的直径；褶皱膨胀袋 5的两端分别用前金属固定套 6、后金属固定套 7固定在瓦斯抽采管 2上， 瓦斯抽采管 2的前端露出金属固定套 7的长度为 lm， 瓦斯抽采管 2直径为 60mm， 回浆管 4和注浆管 3直径均为 19mm; a. According to the conventional construction of the drilling hole 1, the pleated expansion bag 5 with a plurality of small holes 9 in the wall of the bag is first set on the gas extraction pipe 2, and the small hole 9 on the wall of the bag of the pleated expansion bag is lcm in diameter. The diameter of the pleated expansion bag 5 is slightly larger than the diameter of the drill hole 1; the two ends of the pleated expansion bag 5 are fixed to the gas extraction pipe 2 by the front metal fixing sleeve 6 and the rear metal fixing sleeve 7, respectively, and the front end of the gas drainage pipe 2 The exposed metal fixing sleeve 7 has a length of lm, the gas drainage tube 2 has a diameter of 60 mm, and the reducting tube 4 and the grouting tube 3 have a diameter of 19 mm;
b. 将注浆管 3和回浆管 4分别穿过褶皱膨胀袋 5后端连接的金属固定套 6，插入到 长度为 1.5-5m的褶皱膨胀袋 5内， 注浆管 3插入褶皱膨胀袋 5内的长度为 0.2m， 回浆管 4插入褶皱膨胀袋 5内的长度为 1.2m~4.5m; b. The grouting pipe 3 and the grouting pipe 4 are respectively passed through the metal fixing sleeve 6 connected at the rear end of the pleated expansion bag 5, and inserted into the pleated expansion bag 5 having a length of 1.5-5 m, and the grouting pipe 3 is inserted into the pleated expansion bag. The length in 5 is 0.2m, and the length of the repulping tube 4 inserted into the pleated expansion bag 5 is 1.2m~4.5m;
c. 将装有褶皱膨胀袋 5的瓦斯抽采管 2送入钻孔 1内，通过注浆管 3向褶皱膨胀袋 5内柔性充填材料， 待回浆管 4回浆时， 停止注入， 完成对抽采钻孔 1的封孔； 所述注入 的柔性充填材料由质量百分比为 1:10的无机吸水材料和水混合反应而成。 所注的无机吸 水材料包括粉煤灰、 粘土。 c. The gas extraction pipe 2 equipped with the pleated expansion bag 5 is sent into the drill hole 1, and the material is filled into the pleated expansion bag 5 through the grouting pipe 3, and when the slurry returning pipe 4 is repulped, the injection is stopped, and the filling is completed. The sealing hole of the extraction hole 1 is formed by mixing and mixing the inorganic water-absorbing material with a mass percentage of 1:10 and water. The inorganic water absorbing materials noted include fly ash and clay.
由于褶皱膨胀袋 5含有若干小孔 9，柔性充填材料可以从小孔 9渗出，渗入到钻孔 1 周围裂隙， 与煤壁充分结合， 从而实现对抽采钻孔 1的有效封孔。
Since the pleated expansion bag 5 contains a plurality of small holes 9, the flexible filling material can be oozing out from the small holes 9, infiltrating into the cracks around the hole 1, and fully integrated with the coal wall, thereby effectively sealing the drilling hole 1.
Claims
1、 一种柔性充填材料钻孔封孔装置及方法， 其特征在于： 它包括套装在在瓦斯抽采 管 （2) 上的褶皱膨胀袋 （5)， 褶皱膨胀袋 （5) 的两端均设有前、 后金属固定套 （6、 7)， 褶皱膨胀袋 （5) 内位于瓦斯抽采管 （2) 上方插装有进入到褶皱膨胀袋 （5) 底部的 回浆管 （4)， 褶皱膨胀袋 （5) 内位于瓦斯抽采管 （2) 下方插装有进入到褶皱膨胀袋1. A flexible filling material drilling and sealing device and method, characterized by: It includes a pleated expansion bag (5) set on the gas extraction pipe (2), and both ends of the pleated expansion bag (5) are There are front and rear metal fixing sleeves (6, 7). The pleated expansion bag (5) is located above the gas drainage pipe (2) and has a slurry return pipe (4) that enters the bottom of the pleated expansion bag (5). The pleated expansion bag (5) is located below the gas extraction pipe (2) and is inserted into the pleated expansion bag.
(5) 前部的注浆管 （3); 所述的褶皱膨胀袋 （5) 的袋壁上开有若干小孔 （9); 所述前 金属固定套 （7) 上钻有使瓦斯抽采管 （2) 穿过的孔， 后金属固定套 （6) 上分别钻有使 瓦斯抽采管 （2)、 注浆管 （3)、 回浆管 （4) 穿过的三个孔。 (5) The grouting pipe (3) at the front; there are several small holes (9) on the wall of the pleated expansion bag (5); the front metal fixed sleeve (7) is drilled with holes for gas extraction. The hole for the gas extraction pipe (2) to pass through, and the rear metal fixing sleeve (6) are drilled with three holes for the gas drainage pipe (2), the grouting pipe (3), and the grout return pipe (4) to pass through.
2、 根据权利要求 1所述的柔性充填材料钻孔封孔装置及方法， 其特征在于： 所述褶 皱膨胀袋 （5) 的由橡胶制成， 其长度为 1.5-5m。 2. The flexible filling material drilling and sealing device and method according to claim 1, characterized in that: the pleated expansion bag (5) is made of rubber, and its length is 1.5-5m.
3、 根据权利要求 1或 2所述的柔性充填材料钻孔封孔装置及方法， 其特征在于： 所 述褶皱膨胀袋 （5) 的袋壁上开设的若干小孔 （9) 直径为 lcm。 3. The flexible filling material drilling and sealing device and method according to claim 1 or 2, characterized in that: the diameter of several small holes (9) opened on the bag wall of the pleated expansion bag (5) is 1 cm.
4、 一种如权利要求 1、 2、 3所述装置的柔性充填材料钻孔封孔装置及方法， 其特征 在于， 包括如下步骤： 4. A flexible filling material drilling and sealing device and method according to claims 1, 2, and 3, characterized in that it includes the following steps:
a. 将袋壁上开有若干小孔 （9) 的褶皱膨胀袋 （5) 套装在瓦斯抽采管 （2) 上， 褶 皱膨胀袋 （5) 的两端分别用前、 后金属固定套 （6、 7) 固定； a. Set the pleated expansion bag (5) with several small holes (9) on the bag wall on the gas extraction pipe (2), and use front and rear metal fixing sleeves (5) on both ends of the pleated expansion bag (5). 6, 7) fixed;
b. 分别将注浆管 （3) 和回浆管 （4) 穿过褶皱膨胀袋 （5) 的前金属固定套 （6)， 插入到长度为 1.5-5m的褶皱膨胀袋 （5) 内， 注浆管 （3) 插入褶皱膨胀袋 （5) 内的长度 为 0.2m， 回浆管 （4) 插入褶皱膨胀袋 （5) 内的长度为 1.2m~4.5m; b. Pass the grouting pipe (3) and return pipe (4) through the front metal fixing sleeve (6) of the pleated expansion bag (5) respectively, and insert them into the pleated expansion bag (5) with a length of 1.5-5m. The length of the grouting pipe (3) inserted into the pleated expansion bag (5) is 0.2m, and the length of the grouting pipe (4) inserted into the pleated expansion bag (5) is 1.2m~4.5m;
c. 将装有褶皱膨胀袋 （5) 的瓦斯抽采管 （2) 送入钻孔 （1) 内， 通过注浆管 （3) 向褶皱膨胀袋 （5) 内柔性充填材料， 待回浆管 （4) 回浆时， 停止注入， 完成对抽采钻 孔 （1) 的封孔； 所述注入的柔性充填材料由质量百分比为 1:10的无机吸水材料和水混合 反应而成。 c. Send the gas extraction pipe (2) equipped with the pleated expansion bag (5) into the borehole (1), and flexibly fill the pleated expansion bag (5) with material through the grouting pipe (3). Wait for the grouting to return. When the pipe (4) is slurrying back, the injection is stopped to complete the sealing of the drainage borehole (1); the injected flexible filling material is made of a mixed reaction of an inorganic water-absorbing material and water with a mass percentage of 1:10.
5、 根据权利要求 4所述的柔性充填材料钻孔封孔装置及方法， 其特征在于： 所注的 无机吸水材料为粉煤灰、 粘土。
5. The flexible filling material drilling and sealing device and method according to claim 4, characterized in that: the injected inorganic water-absorbing material is fly ash and clay.
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| CN103075127B (en) | 2016-02-24 |
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