WO2020238210A1 - 一种煤矿综采工作面综合支护方法 - Google Patents

一种煤矿综采工作面综合支护方法 Download PDF

Info

Publication number
WO2020238210A1
WO2020238210A1 PCT/CN2019/130568 CN2019130568W WO2020238210A1 WO 2020238210 A1 WO2020238210 A1 WO 2020238210A1 CN 2019130568 W CN2019130568 W CN 2019130568W WO 2020238210 A1 WO2020238210 A1 WO 2020238210A1
Authority
WO
WIPO (PCT)
Prior art keywords
fully mechanized
mining face
grouting
roof
grouting hole
Prior art date
Application number
PCT/CN2019/130568
Other languages
English (en)
French (fr)
Inventor
翟文
任予鑫
马昆
黄艳利
陈延海
董霁红
李俊孟
高华东
郭亚超
Original Assignee
翟文
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 翟文 filed Critical 翟文
Publication of WO2020238210A1 publication Critical patent/WO2020238210A1/zh
Priority to ZA2020/07716A priority Critical patent/ZA202007716B/en

Links

Images

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK 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
    • E21D11/006—Lining anchored in the rock
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK 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
    • E21D11/14—Lining predominantly with metal
    • E21D11/15—Plate linings; Laggings, i.e. linings designed for holding back formation material or for transmitting the load to main supporting members
    • E21D11/152—Laggings made of grids or nettings

Definitions

  • the invention relates to the technical field of coal mine support, in particular to a comprehensive support method for a coal mine's fully mechanized mining face.
  • the full name of a fully mechanized mining face is called a comprehensive mechanized mining face, which refers to a mining face with hydraulic supports, high-power scrapers, and double-drum shearers.
  • the coal mining procedures used in fully mechanized mining face include coal breaking, coal loading, coal transportation, support, goaf treatment, special support at both ends, etc.
  • the specific coal mining method mainly adopts the end of the long wall. Oblique cutting coal mining methods, of course, there are also very few coal mining methods that use inclined long-wall coal mining methods.
  • the former coal mining method is specifically: when the double drum shearer cuts coal up or down, The upper drum cuts the top coal, and the lower drum cuts the remaining bottom coal.
  • the fully mechanized mining face is affected by mining.
  • the wind tunnel is deformed seriously, and the two sides of the wind tunnel have developed fissures. Because the two sides of the wind tunnel are loose and easy to collapse, it is easy to cause the end equipment (scraper)
  • the tail and the end support cannot pass safely, and when the roof at the tail of the scraper is broken, the shearer cuts the coal seam under the roof at the tail of the scraper, and the exposed roof is extremely easy to collapse.
  • the roof leakage accident has seriously restricted the safe and efficient advancement of fully mechanized mining face. Therefore, it is urgent to strengthen the comprehensive support of fully mechanized mining face.
  • the purpose of the present invention is to overcome the shortcomings of the prior art, provide a comprehensive support method for a fully mechanized mining face, prevent roof leakage accidents, and enable the fully mechanized mining face to advance safely and efficiently.
  • the present invention provides a comprehensive support method for a fully mechanized coal mining face.
  • the method includes:
  • the shearer After the shearer cuts the upper side of the wind tunnel, the cut upper side is supported by bolts and nets.
  • the reinforcement device is a semi-circular wood
  • the metal mesh is a steel mesh
  • the semi-circular wood uses rivets to fix the steel mesh to the top plate
  • the length of the semi-circular wood is smaller than the width of the metal mesh.
  • the method of using advanced injection of chemical reinforcement to reinforce the roof in the range of the scraper tail and the wind tunnel includes:
  • Reinforcement is injected into the first grouting eye and the second grouting eye.
  • the depth of the first grouting eye is 4 meters, and the depth of the second grouting eye is 2 meters.
  • the reinforcing material injection volume of the reinforcing material injected into the first grouting eye and the second grouting eye is 20-30 barrels, wherein each barrel contains 25Kg of the reinforcing material.
  • supporting the cut upper side with bolts and nets includes:
  • a plurality of diamond-shaped metal meshes are hung on the upper part of the wind tunnel, and the diamond-shaped metal mesh is pressed on the lower part of the anchor rod of the upper part, and two adjacent diamond-shaped metal meshes are connected by a wire fastener.
  • a supporting plate is also arranged between the anchor rods.
  • the helper anchor rods are arranged in two rows, the distance between the two rows of helper anchor rods is 900*900mm, and the helper anchor rods are ⁇ 16*1600mm round steel anchor rods.
  • the pallet is a dome-shaped wooden pallet or a dome-shaped iron pallet, and the size of the pallet is 150*150*10mm.
  • two Z2335 resin drug coils are filled inside the help anchor rod, and the pre-tightening moment of the help anchor rod is greater than or equal to 200 N*m.
  • the method of using advanced injection of chemical reinforcement to reinforce the roof in the range of the scraper tail and the wind tunnel includes:
  • Reinforcement is injected into the first grouting eye and the second grouting eye.
  • the first grouting eye is punched in the roof above the fully mechanized mining face to be processed, and the second grouting eye is punched in the roof above the wind tunnel, wherein the second grouting eye is ahead of the The first grouting eye.
  • the depth of the first grouting hole in the roof above the fully mechanized mining face to be processed is greater than or equal to the diffusion radius of the reinforcement in the first grouting hole, and the second grouting hole is above the wind tunnel
  • the depth in the top plate is greater than or equal to the diffusion radius of the reinforcing material in the second grouting eye.
  • the diffusion area of the reinforcing material in the first grouting eye intersects the diffusion area of the reinforcing material in the second grouting eye.
  • the comprehensive support method for comprehensive coal mining faces is provided with a metal mesh on the front beam of the bracket corresponding to the tail of the scraper every time the tail of the scraper advances.
  • the reinforcement device is used to reinforce the metal mesh; on the other hand, the tail of the scraper and the roof in the air tunnel are reinforced by the method of advanced injection of chemical reinforcement; finally, the shearer cuts the wind tunnel After the gang, the cut upper gang is supported by anchor nets.
  • the comprehensive support of the fully mechanized coal mining face can be effectively prevented by adopting the three measures of supporting roof reinforcement, advanced injection of chemical reinforcement and bolt-net support, which can effectively prevent roof leakage accidents and make the fully mechanized mining face safe and efficient.
  • Figure 1 is a schematic flow diagram of a comprehensive support method for a fully mechanized coal mining face provided by an embodiment of the application;
  • Fig. 2 is a schematic front view of a reinforcement device provided by an embodiment of the application.
  • FIG. 3 is a schematic top view of a reinforcement device provided by an embodiment of the application.
  • FIG. 4 is a schematic diagram of a front view of an eye drilling for reinforcement using a method of advanced injection of chemical reinforcement provided by an embodiment of the application;
  • FIG. 5 is a schematic top view of the perforation for reinforcement by the method of advanced injection of chemical reinforcement provided by the embodiment of the application;
  • Fig. 6 is a schematic top view of anchor net support for the cut upper side provided by the embodiment of the application.
  • Fig. 7 is a schematic diagram of A direction for anchoring and supporting the upper side after cutting according to an embodiment of the application.
  • FIG. 1 is a schematic flow diagram of a comprehensive support method for a fully mechanized coal mining face provided by an embodiment of this application.
  • the method includes:
  • Step S101 every time the tail of the scraper is advanced by one blade, a metal mesh is laid on the front beam of the bracket corresponding to the tail of the scraper;
  • Step S102 Reinforcing the metal mesh with a reinforcing device.
  • step S101 and step S102 are executed.
  • the work scene includes a wind tunnel 6 and a fully mechanized mining face 7.
  • the fully mechanized mining face 6 includes a shearer for cutting coal seams, a scraper for transporting coal, and a support 3 for supporting the roof 2.
  • the scraper includes a nose and a tail.
  • the tail 1 of the scraper refers to the position of the scraper close to the side of the wind tunnel 6.
  • Steps S101 and S102 belong to the direct strengthening and protection of the top plate 2 at the tail 1 of the scraper.
  • Each advance of the scraper tail 1 refers to the advancement of the scraper tail 1 by 0.865m every time it enters a circulating working face. Because the top plate at the tail of the scraper is broken before the coal mining machine cuts the coal seam Therefore, after being cut by the shearer, the roof at the tail 1 of the scraper is prone to roof leakage accidents. Therefore, the direct reinforcement of the roof 2 through steps S101 and S102 can effectively prevent The roof leakage accident occurred.
  • fully mechanized working face 7 is advanced from end C to end B.
  • the working face can be divided into several working sections, and the coal mining machine divides the coal seam of each working section. After the upper coal body is cut, it falls onto the scraper, and the scraper transports the coal to the designated location.
  • every time the scraper tail 1 advances by one blade means that each time the scraper completes a work section, the metal mesh is laid on the front beam of the bracket corresponding to the scraper tail of the current work section.
  • the types of roof can be divided into: false roof, direct roof, old roof, common roof support methods include: single support, friction metal support, hydraulic support support.
  • brackets 3 at the tail of the scraper such as the two brackets 3 shown in Figure 3.
  • the bracket 3 in this embodiment adopts a metal retractable bracket. Compared with brackets of other materials, the metal bracket has a stronger bearing capacity.
  • the support 3 includes a fender 31, a support front beam 32, a support top beam 33, and a shield 34, wherein the support front beam 32 is located above the tail of the scraper.
  • the metal mesh 4 is laid on the front beam 32 of the support in this application, and the reinforcing device 5 is used to strengthen the metal mesh 4.
  • the metal mesh laid on the position corresponding to the top beam 33 of the support is the metal mesh laid on the top plate in the previous working section.
  • the roof above the wind tunnel 6 must also be supported, as shown in Figure 3,
  • the position aligned with the current fully mechanized mining face 7 also has a support 3 to support the roof above the wind tunnel.
  • a metal mesh 4 should be laid on the roof above the wind tunnel and reinforced
  • the device 5 reinforces the metal mesh 4 to fix the metal mesh 4 on the top plate.
  • the reinforcement device 5 is a semi-circular wood
  • the metal mesh 4 is a steel mesh
  • the semi-circular wood uses rivets to fix the steel mesh and the top plate 2.
  • the length of the semi-circular wood It is smaller than the width of the metal mesh.
  • the internal structure of the mine roadway and the geological activities of the mine are the main factors affecting the bearing capacity of the metal support.
  • the change in the bearing capacity of the metal support will make the roof support of the roadway and One part of the roof support of a fully mechanized mining face is concentrated. If the elasticity of the support cannot meet the requirements, the bearing capacity of the roadway support and the support part of the fully mechanized mining face will be larger, and the supporting plate may even collapse. The emergence of an accident. Therefore, in the embodiment of the present application, the metal mesh 4 is laid on the front beam 32 of the bracket corresponding to the tail 1 of the scraper machine, and the metal mesh 4 is reinforced by the reinforcement device 5.
  • laying the metal mesh 4 can increase The bearing area of the support 3 relative to the top of the roadway and the top of the fully mechanized mining face can not only support the top of the roadway and the top of the fully mechanized mining face, but also reduce the bearing capacity of the metal support of the roadway and the fully mechanized face.
  • the increased semi-circle can further fix the metal mesh and prevent the metal mesh from falling off.
  • the stroke lane in this application is equivalent to the laneway.
  • the chemical processing material is injected into the top plate 2 within a certain range in advance, which can effectively prevent the top plate from being further broken or collapsed.
  • the first grouting hole 81 is punched at a preset elevation angle at a first preset distance from the top of the front of the frame corresponding to the tail 1 of the scraper machine; Set a second grouting eye 82; inject reinforcement material into the first grouting eye 81 and the second grouting eye 82.
  • the first grouting hole 81 is drilled in the roof above the fully mechanized mining face to be processed
  • the second grouting hole 82 is drilled in the roof above the wind tunnel
  • the second grouting hole 82 is ahead of The first grouting eye 81.
  • Chemical reinforcement in the area of fully mechanized mining face to be processed in advance can more effectively prevent roof fall accidents from broken roof.
  • the roof above the fully mechanized mining face to be processed and the roof above the wind tunnel are connected, it is not only necessary to inject reinforcement material into the roof above the fully mechanized mining face to be processed, but also to inject reinforcement material into the roof above the wind tunnel.
  • the second grouting eye 82 should be ahead of the first grouting eye 81, so that the roof can be reinforced in a larger area.
  • the first grouting hole 81 is drilled in the roof of the fully mechanized mining face to be processed
  • the second grouting hole 82 is drilled in the roof 2 of the wind tunnel
  • the first grouting The eye 81 and the second grouting eye 82 are injected with chemical reinforcement.
  • a diffusion area M is generated with the first grouting eye 81 and the second grouting eye 82 as the centers.
  • the depth of the first grouting hole 81 in the roof above the fully mechanized mining face to be processed is greater than or equal to the diffusion radius of the reinforcement in the first grouting hole 81
  • the second grouting hole 82 is The depth in the roof above the air tunnel is greater than or equal to the diffusion radius of the reinforcing material in the second grouting hole 82.
  • the diffusion area of the reinforcing material in the first grouting hole 81 intersects the diffusion area of the reinforcing material in the second grouting hole 82.
  • the depths of the first grouting eye 81 and the second grouting eye 82 are greater than their respective diffusion radii; the positions of the first grouting eye 81 and the second grouting eye 82 are set so that the two diffusion areas have an intersection, thereby making
  • the roof of the fully mechanized mining face 7 and the roof above the wind tunnel 6 can be connected to further prevent the roof from collapsing.
  • the method of using advanced injection of chemical processing materials to reinforce the roof in the range of the scraper tail and the wind tunnel includes: corresponding to the scraper tail
  • the first grouting hole 81 is drilled at a 45° elevation angle at the front of the support 1m from the top plate; the second grouting hole 82 is drilled on the lower edge 62 at a position 5-6m ahead of the wind tunnel 6; to the first grouting hole 81 and The second grouting eye 82 injects reinforcement material.
  • the depth of the first grouting eye 81 is 4 meters (4 m)
  • the depth of the second grouting eye 82 is 2 m.
  • the first injection is made at a 45° elevation angle at a distance of 1m from the top plate in front of the frame 3 corresponding to the tail 1 of the scraper.
  • Grouting hole 81 and a second grouting hole 82 is set 5-6m ahead of the wind tunnel 6 on the lower edge 62.
  • the diffusion radius of the grouting is 2m.
  • the wind tunnel 6 includes an upper 61 and a lower 62.
  • the upper 61 refers to the side of the wind tunnel far away from the fully mechanized mining face
  • the lower 62 refers to the side of the wind tunnel near the fully mechanized mining face.
  • each barrel contains 25Kg of the reinforcing material, that is to say, the injection volume of the reinforcing material for injecting the reinforcing material into the first grouting hole 81 and the second grouting hole 82 is 500-750Kg.
  • Step S104 After the shearer cuts the upper side of the wind tunnel, the cut upper side is supported by bolts and nets.
  • the wind tunnel is seriously deformed by mining, and the sinking of the upper drum, bottom drum, and roof is serious.
  • a shearer must be used to cut the upper 61 of the wind tunnel.
  • the upper 61 coal body is loose and easy. Falling off causes a lot of coal piled up in front of the tailstock, difficult to move the frame, and there is a potential safety hazard of injury to the slices. For this reason, it is also necessary to support the upper 61 after cutting with anchor nets.
  • the cut upper side 61 is supported by bolting and netting, including:
  • a plurality of diamond-shaped metal nets 91 are hung on the upper part of the wind tunnel, that is, a plurality of diamond-shaped metal nets 91 are hung on the upper part of the wind tunnel cut by the shearer.
  • the two diamond-shaped metal meshes 91 are connected by wire buckles 93, and a support plate 94 is also provided between the diamond-shaped metal mesh 91 and the helper anchor 92.
  • the helper bolts 92 may be arranged in two rows, the distance between the two rows of helper bolts 92 may be 900*900mm, and the helper bolts 92 may be ⁇ 16*1600mm round steel bolts.
  • the pallet 94 may be a dome-shaped wooden pallet or a dome-shaped iron pallet, and the size of the pallet 94 may be 150*150*10 mm.
  • the helper anchor 92 is filled with two Z2335 resin coils, and the pre-tightening torque of the helper anchor 92 is greater than or equal to 200N*m.
  • the comprehensive support method for fully mechanized coal mining face of the present application on the one hand, every time the scraper tail advances one blade, a metal mesh is laid on the front beam of the bracket corresponding to the scraper tail, and a reinforcement device is used to protect the metal mesh Reinforcement treatment; on the other hand, the roof in the tail of the scraper and the wind tunnel is reinforced by the method of advanced injection of chemical reinforcement; finally, the shearer cuts the upper edge of the wind tunnel after cutting.
  • the comprehensive support of the fully mechanized coal mining face can be effectively prevented by adopting the three measures of supporting roof reinforcement, advanced injection of chemical reinforcement and bolt-net support, which can effectively prevent roof leakage accidents and make the fully mechanized mining face safe and efficient. .
  • Step S101 For each cut forward of the shearer tail, a metal mesh is laid on the front beam of the support corresponding to the shearer tail;
  • Step S102 Reinforcing the metal mesh with a reinforcing device.
  • the reinforcement device uses semi-circular wood.
  • Step S103 Reinforce the roof in the range of the tail of the shearer and the air tunnel by means of advanced injection of chemical reinforcement.
  • it specifically includes: drilling the first grouting hole at an elevation angle of 45° at an elevation angle of 45° at a position 1 m in front of the corresponding support of the shearer tail; setting a second grouting eye on the lower edge 5-6m ahead of the wind tunnel ; Inject reinforcement to the first grouting eye and the second grouting eye.
  • the depth of the first grouting eye is 4 meters, and the depth of the second grouting eye is 2 meters.
  • Step S104 After the shearer cuts the upper side of the wind tunnel, the cut upper side is supported by bolts and nets. Wherein, it specifically includes: a plurality of diamond-shaped metal meshes are hung on the upper part of the wind tunnel, the diamond-shaped metal mesh is pressed on the lower part of the anchor rod of the upper part, and two adjacent diamond-shaped metal meshes are connected by a wire button. A supporting plate is also arranged between the net and the anchor rod of the help part.
  • the helper anchor rods are arranged in two rows, the distance between the two rows of helper anchor rods is 900*900mm, and the helper anchor rods are ⁇ 16*1600mm round steel anchor rods.
  • the fully mechanized mining face started mining at the beginning of June this year.
  • the working face is deeply buried and the mining pressure is high. From July to September, an average of 5.6 roof leakage accidents occurred each month due to the scraper tail roof broken. The working face is advancing rapidly.
  • the impact of roof leakage accident on the safe and efficient mining of the working face mainly includes the following aspects:
  • the cycle time is about 20 minutes, and 2-3 cycles can be added every day, which effectively improves the operating rate of fully mechanized mining face equipment.
  • the fully mechanized mining face eliminates the occurrence of roof leakage accidents, greatly reduces the time per cycle, and the average number of cycles completed per day is 2 There are 3 to 4-5, which can produce 2700 tons of raw coal per day and 81,000 tons of raw coal per month.
  • the unit price of finished coal in our mine is 735 yuan/ton for large pieces, 730 yuan/ton for medium pieces, 606 yuan/ton for small pieces, 400 yuan/ton for fine coal, and the total cost is 159.47 yuan/ton.
  • Economic benefit number of cycles ⁇ cycle output ⁇ (unit price per ton of coal-complete cost).
  • the average unit price of lump coal per ton is 690 yuan/ton, and the lump coal rate is 30%.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
  • Excavating Of Shafts Or Tunnels (AREA)
  • Lining And Supports For Tunnels (AREA)

Abstract

一种煤矿综采工作面综合支护方法，包括：一方面刮板机机尾（1）每推进一刀，在所述刮板机机尾（1）相对应的支架前梁（32）上铺设金属网（4），采用加固装置（5）对所述金属网（4）进行加固处理；又一方面对所述刮板机机尾（1）和风巷（6）范围内的顶板（2）利用超前注射化学加固料的方法进行加固；最后采煤机截割风巷（6）上帮（61）后，对截割后的上帮（61）进行锚网支护。通过采用支护顶板（2）加固处理，超前注射化学加固料以及锚网支护三方面措施对煤矿综采工作面（7）进行综合支护，能够有效的防止顶板冒漏事故，使得工作面安全高效的推进。

Description

一种煤矿综采工作面综合支护方法
本申请要求于2019年5月24日提交中国国知局、申请号为201910438554.2的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本发明涉及煤矿支护技术领域，特别涉及一种煤矿综采工作面综合支护方法。
背景技术
综采工作面全称叫做综合机械化回采工作面，是指以拥有液压支架、大功率刮板机、双滚筒采煤机的回采工作面。综采工作面采用的采煤工序包括破煤、装煤、运煤、支护、采空区处理、两端头的特殊支护等子工序，具体的采煤方法主要采用走向长壁端头斜切进刀的采煤方式，当然也有极少数的采煤方法采用倾斜长壁的采煤方式，前一种采煤方式具体为：当双滚筒采煤机上行割煤或者下行割煤时，上滚筒割顶煤，下滚筒割剩余的底煤。
综采工作面受采动影响，风巷变形严重，风巷两帮煤体裂隙发育，由于风巷两帮煤体具有松散、易垮落的特点，所以，容易造成端头设备(刮板机机尾、端头支架)无法安全通过，而且当刮板机机尾处顶板破碎时，采煤机将位于刮板机机尾处顶板下方的煤层切割后，裸露在外的顶板极易坍塌，从而发生顶板冒漏事故，严重制约综采工作面安全高效的推进。因此加强综采工作面的综合支护迫在眉睫。
发明内容
本发明的目的旨在克服现有技术存在的不足，提供了一种综采工作面的综合支护方法，防止顶板冒漏事故，使得综采工作面安全高效的推进。
为了解决上述技术问题本发明提供一种煤矿综采工作面综合支护方法，所述方法包括：
刮板机机尾每推进一刀，在所述刮板机机尾相对应的支架前梁上铺设金属网；
采用加固装置对所述金属网进行加固处理；
对所述刮板机机尾和风巷范围内的顶板利用超前注射化学加固料的方法进行加固；
采煤机截割风巷上帮后，对截割后的上帮进行锚网支护。
优选的，所述加固装置为半圆木，所述金属网为钢筋网，所述半圆木利用铆钉将所述钢筋网与顶板相固定，所述半圆木的长度小于所述金属网的宽度。
优选的，所述对所述刮板机机尾和风巷范围内的顶板利用超前注射化学加固料的方法进行加固包括：
在所述刮板机机尾相对应支架前距顶板1m处以45°仰角打第一注浆眼；
在风巷超前外5～6m处靠下帮打设第二注浆眼；
向所述第一注浆眼和所述第二注浆眼注射加固料。
优选的，所述第一注浆眼的深度为4米，所述第二注浆眼的深度为2m。
优选的，所述向所述第一注浆眼和所述第二注浆眼注射加固料的加固料注射量为20-30桶，其中，每桶内盛有25Kg所述加固料。
优选的，所述采煤机截割风巷上帮后，对截割后的上帮进行锚网支护包括：
风巷帮部挂多个菱形金属网，所述菱形金属网压于帮部锚杆下部，相邻两个所述菱形金属网之间通过铁丝扣相连接，所述菱形金属网和所述帮部锚杆之间还设置有托板。
优选的，所述帮部锚杆设置为两排，两排所述帮部锚杆的间距为900*900mm，所述帮部锚杆为φ16*1600mm圆钢锚杆。
优选的，所述托板为穹型木托板或穹型铁托板，所述托板的大小为150*150*10mm。
优选的，所述帮部锚杆内部充填两节Z2335树脂药卷，所述帮部锚杆的预紧力矩大于或等于200N*m。
优选的，所述对所述刮板机机尾和风巷范围内的顶板利用超前注射化学加固料的方法进行加固包括：
在所述刮板机机尾相对应支架前距顶板第一预设距离处以预设仰角打第一注浆眼；
在风巷超前外第二预设距离处靠下帮打设第二注浆眼；
向所述第一注浆眼和所述第二注浆眼注射加固料。
优选的，所述第一注浆眼打在待处理综采工作面上方顶板内，所述第二注浆眼打在风巷上方顶板内，其中，所述第二注浆眼超前于所述第一注浆眼。
优选的，所述第一注浆眼在待处理综采工作面上方顶板内的深度大于或等于所述第一注浆眼内加固料的扩散半径，所述第二注浆眼在风巷上方顶板内的深度大于或等于所述第二注浆眼内加固料的扩散半径。
优选的，所述第一注浆眼内加固料的扩散区域与所述第二注浆眼内加固料的扩散区域相交。
本申请实施例提供的技术方案的有益效果：煤矿综采工作面综合支护方法一方面刮板机机尾每推进一刀，在所述刮板机机尾相对应的支架前梁上铺设金属网，采用加固装置对所述金属网进行加固处理；又一方面对所述刮板机机尾和风巷范围内的顶板利用超前注射化学加固料的方法进行加固；最后采煤机截割风巷上帮后，对截割后的上帮进行锚网支护。通过采用支护顶板加固处理，超前注射化学加固料以及锚网支护三方面措施对煤矿综采工作面进行综合支护，能够有效的防止顶板冒漏事故，使得综采工作面安全高效的推进。
附图说明
为了更清楚地说明本发明实施例或现有技术中的技术方案，下面将对实施例中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本发明的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。
图1为本申请实施例提供的煤矿综采工作面综合支护方法流程示意图；
图2为本申请实施例提供的加固装置的主视示意图；
图3为本申请实施例提供的加固装置的俯视示意图；
图4为本申请实施例提供的利用超前注射化学加固料的方法进行加固的打眼主视示意图；
图5为本申请实施例提供的利用超前注射化学加固料的方法进行加固的打眼俯视示意图；
图6为本申请实施例提供的对截割后的上帮进行锚网支护俯视示意图；
图7为本申请实施例提供的对截割后的上帮进行锚网支护A向示意图。
具体实施方式
下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整的描述，显然，所描述的实施例仅仅是本发明一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有作出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。
请参阅图1，为本申请实施例提供的煤矿综采工作面综合支护方法流程示意图。所述方法包括：
步骤S101：刮板机机尾每推进一刀，在所述刮板机机尾相对应的支架前梁上铺设金属网；
步骤S102：采用加固装置对所述金属网进行加固处理。
由背景技术可知，当刮板机机尾1处的顶板2已经破碎时，如果采煤机将该处顶板2对应的煤层切割后，直接裸露在外的顶板2极易坍塌，从而发生顶板冒漏事故，其中，顶板是指位于煤层上方的岩层。为了防止刮板机机尾1处的顶板2发生顶板冒漏事故，首先执行步骤S101和步骤S102。
还需要说明的是，在工作场景中包括风巷6和综采工作面7，参照图5，综采工作面7的推进方向与风巷6的延伸方向相同。综采工作面6包括用于切割煤层的采煤机、用于运输煤体的刮板机以及用于支护顶板2的支架3。其中，刮板机包括机头和机尾，刮板机机尾1是指刮板机靠近风巷6一侧的位置。
步骤S101和步骤S102属于对刮板机机尾1处的顶板2直接的加强支护。刮板机机尾1每推进一刀指的是刮板机机尾1每进一个循环工作面加要向前推进0.865m，由于在采煤 机切割煤层之前，刮板机机尾处顶板已经破碎，所以，被采煤机切割过之后，刮板机机尾1处的顶板很容易发生顶板冒漏事故，因此通过步骤S101和步骤S102的对顶板2进行直接的加强支护能过有效的防止顶板冒漏事故的发生。
在综采工作面7的推进过程中，如图5所示，综采工作面7由C端向B端推进，可以将工作面划分为若干个工作段，采煤机将每个工作段煤层上的煤体切割后，掉落到刮板机上，刮板机将煤体运输到指定位置。也就是说，刮板机机尾1每推进一刀是指刮板机每完成一个工作段的工作，在当前工作段刮板机机尾相对应的支架前梁上方铺设金属网。
顶板的类型可以分为：伪顶、直接顶、老顶，顶板常见的支护方式包括：单体支护、摩擦金属支护、液压支架支护。刮板机机尾有相对应的支架3，如图3所示的两个支架3，本实施例的支架3采用金属可伸缩性支架，与其他材料的支架相比，金属支架承载能力较强。如图4所示，支架3包括护帮板31、支架前梁32、支架顶梁33和掩护板34，其中，支架前梁32位于刮板机机尾上方。由于刮板机机尾1上方的顶板2破碎，所以，本申请在支架前梁32上铺设金属网4，并采用加固装置5对所述金属网4进行加固处理。图3中，支架顶梁33对应的位置上铺设的金属网为之前工作段中，在顶板上铺设的金属网。
另外，由于风巷6与综采工作面7是相连的，所以，随着综采工作面7的推进，也要对风巷6上方的顶板进行支护，如图3所示，风巷中与当前综采工作面7对齐的位置也有支架3对风巷上方顶板支护，同时，随着综采工作面7的推进，也要在风巷上方顶板处铺设的金属网4，并采用加固装置5对所述金属网4进行加固处理，使金属网4固定在顶板上。
具体的，如图2所示，所述加固装置5为半圆木，所述金属网4为钢筋网，所述半圆木利用铆钉将所述钢筋网与顶板2相固定，所述半圆木的长度小于所述金属网的宽度。
在实际矿井巷道支护和综采工作面的支护工作中，矿井巷道的内部构造和矿层地质活动都是影响金属支架承载能力的主要因素，金属支架承载能力的变化会使巷道顶板支护和综采工作面顶板支护的其中一个部位受力集中，如果支架弹性不能满足要求，就会致使巷道支护和综采工作面支护部分承载力较大，甚至会出现支护板件坍塌等事故的出现。因此本申请实施例通过在所述刮板机机机尾1相对应的支架前梁32上铺设金属网4，并通过加固装置5对金属网4进行加固处理，一方面铺设金属网4能够增加支架3相对于巷道顶部和综采工作面顶部的受力面积，不仅可以对巷道顶部和综采工作面顶部起支撑作用还能减小巷道金属支架和综采工作面金属支架的承载力，另一方面增加的半圆木能够进一步的固定金属网，防止金属网脱落。本申请中风巷相当于巷道。步骤S103：对所述刮板机机尾和风巷范围内的顶板利用超前注射化学加固料的方法进行加固。
由于刮板机机尾1处顶板2已经破碎，所以预先在在一定范围内的顶板2内注射化学加工料，可以有效的防止顶板进一步破碎或坍塌。
优选的，在所述刮板机机尾1相对应支架前距顶板第一预设距离处以预设仰角打第一注浆眼81；在风巷超前外第二预设距离处靠下帮打设第二注浆眼82；向所述第一注浆眼81和所述第二注浆眼82注射加固料。
其中，所述第一注浆眼81打在待处理综采工作面上方顶板内，所述第二注浆眼82打在风巷上方顶板内，其中，所述第二注浆眼82超前于所述第一注浆眼81。
提前在待处理综采工作面区域进行化学加固处理，能够更有效的防止破碎的顶板发生冒顶事故。
由于位于待处理综采工作面上方顶板和风巷上方顶板都是相连的，所以，不仅在待处理综采工作面上方顶板内注射加固料，还需要在风巷上方顶板内注射加固料。另外，所述第二注浆眼82要超前于所述第一注浆眼81，这样可以对更大范围内的顶板进行加固。
如图4和图5所示，在待处理的综采工作面的顶板中打第一注浆眼81，在风巷的顶板2中打第二注浆眼82，然后分别在第一注浆眼81和第二注浆眼82中注射化学加固料。注射化学加固料后，分别以第一注浆眼81和第二注浆眼82为中心产生一个扩散区域M。
优选的，所述第一注浆眼81在待处理综采工作面上方顶板内的深度大于或等于所述第一注浆眼81内加固料的扩散半径，所述第二注浆眼82在风巷上方顶板内的深度大于或等于所述第二注浆眼82内加固料的扩散半径。所述第一注浆眼81内加固料的扩散区域与所述第二注浆眼82内加固料的扩散区域相交。
第一注浆眼81和第二注浆眼82的深度均大于各自的扩散半径；第一注浆眼81和第二注浆眼82的位置设置，使两个扩散区域有相交部分，进而使得综采工作面7的顶板和风巷6上方的顶板能够连接，进一步防止顶板坍塌。
具体的，如图4和图5所示，所述对所述刮板机机尾和风巷范围内的顶板利用超前注射化学加工料的方法进行加固包括：在所述刮板机机尾相对应支架前距顶板1m处以45°仰角打第一注浆眼81；在风巷6超前外5～6m处靠下帮62打设第二注浆眼82；向所述第一注浆眼81和所述第二注浆眼82注射加固料。其中，所述第一注浆眼81的深度为4米(4m)，所述第二注浆眼82的深度为2m。从所述第一注浆眼81和第二注浆眼82注射加固料之后，经过试验，通过在所述刮板机机尾1相对应支架3前距顶板1m处以45°仰角打第一注浆眼81以及在风巷6超前外5～6m处靠下帮62打设第二注浆眼82，两处的注浆眼注射加固料之后，再加上注浆的扩散半径为2m，两处的注浆眼注射的加固料扩散之后能够覆盖所述刮板机机尾和风巷的所有范围，有效的对所述刮板机机尾和风巷范围内的顶板进行加固，防止破碎顶板冒漏的发生。
需要说明的是，风巷6包括上帮61和下帮62，上帮61是指风巷中远离综采工作面的一侧，下帮62是指风巷中靠近综采工作面的一侧。
另外，所述向所述第一注浆眼81和所述第二注浆眼82注射加固料的加固料注射量为20-30桶。加固料注射量并不是越多越好，加固料过多对于顶板会增加顶板和支架的承载力，加固料过少对于顶板的加固效果不明显，因此可以根据顶板破碎情况适当增加或减少注浆量，有效维护顶板。其中，每桶内盛有25Kg所述加固料，也就是说，所述向所述第一注浆眼81和所述第二注浆眼82注射加固料的加固料注射量为500-750Kg。
步骤S104：采煤机截割风巷上帮后，对截割后的上帮进行锚网支护。
风巷受采动影响变形严重，帮鼓、底鼓、顶板下沉现象严重，为确保机尾设备顺利通过，需利用采煤机截割风巷上帮61，上帮61煤体松散、易脱落，造成机尾架前堆煤较多，移架困难，且存在片帮伤人的安全隐患，为此，还需要对截割后的上帮61进行锚网支护。
具体的，如图6和图7所示，所述采煤机截割风巷上帮61后，对截割后的上帮61进行锚网支护包括：
风巷帮部挂多个菱形金属网91即所述采煤机截割风巷上帮区域挂多个菱形金属网91，所述菱形金属网91压于帮部锚杆92下部，相邻两个所述菱形金属网91之间通过铁丝扣93相连接，所述菱形金属网91和所述帮部锚杆92之间还设置有托板94。其中，所述帮部锚杆92可以设置为两排，两排所述帮部锚杆92的间距可以为900*900mm，所述帮部锚杆92可以为φ16*1600mm圆钢锚杆。所述托板94可以为穹型木托板或穹型铁托板，所述托板94的大小可以为150*150*10mm。所述帮部锚杆92内部充填两节Z2335树脂药卷，所述帮部锚杆92的预紧力矩大于或等于200N*m。
本申请的煤矿综采工作面综合支护方法一方面刮板机机尾每推进一刀，在所述刮板机机尾相对应的支架前梁上铺设金属网，采用加固装置对所述金属网进行加固处理；又一方面对所述刮板机机尾和风巷范围内的顶板利用超前注射化学加固料的方法进行加固；最后采煤机截割风巷上帮后，对截割后的上帮进行锚网支护。通过采用支护顶板加固处理，超前注射化学加固料以及锚网支护三方面措施对煤矿综采工作面进行综合支护，能够有效的防止顶板冒漏事故，使得综采工作面安全高效的推进。
下面结合具体的应用案例对本申请的煤矿综采工作面综合支护方法的实施效果做进一步的说明。
具体的，根据本申请的方法步骤对综采工作面进行综合支护：
步骤S101：采煤机机尾每前进一刀，在所述采煤机机尾相对应的支架前梁上铺设金属网；
步骤S102：采用加固装置对所述金属网进行加固处理。其中，加固装置采用半圆木。
步骤S103：对所述采煤机机尾和风巷范围内的顶板利用超前注射化学加固料的方法进行加固。其中，具体包括：在所述采煤机机尾相对应支架前距顶板1m处以45°仰角打第一注浆眼；在风巷超前外5～6m处靠下帮打设第二注浆眼；向所述第一注浆眼和所述第二注浆眼注射加固料。所述第一注浆眼的深度为4米，所述第二注浆眼的深度为2m。
步骤S104：采煤机截割风巷上帮后，对截割后的上帮进行锚网支护。其中，具体包括：风巷帮部挂多个菱形金属网，所述菱形金属网压于帮部锚杆下部，相邻两个所述菱形金属网之间通过铁丝扣相连接，所述菱形金属网和所述帮部锚杆之间还设置有托板。所述帮部锚杆设置为两排，两排所述帮部锚杆的间距为900*900mm，所述帮部锚杆为φ16*1600mm圆钢锚杆。
根据本申请方法步骤对综采工作面进行综合支护之前的综采工作面刮板机机尾冒漏次数统计如表1所示：
表1冒漏次数统计
月份 7月份 8月份 9月份 每月平均
冒漏次数 4 6 7 5.6
一、综采工作面自今年6月初开始回采，工作面埋深较深，采动压力大，7-9月份，平均每月因刮板机机尾顶板破碎发生漏顶事故5.6次，严重制约工作面快速推进。
漏顶事故给工作面安全高效回采造成的影响主要有以下几个方面：
1、工作面通风断面减小，影响工作面通风安全，存在安全隐患；
2、处理漏顶作业时，人员需进入煤壁侧作业，危险系数高，安全隐患较大；
3、处理漏顶作业平均每次需注射约20吨加固料对顶板进行加固，平均每月多产生材料费用约为144万元，造成生产成本过大。
二、风巷受采动影响变形严重，帮鼓、底鼓、顶板下沉现象严重，为确保机尾设备顺利通过，需利用采煤机截割风巷上帮，上帮煤体松散、易脱落，造成机尾架前堆煤较多，移架困难，且存在片帮伤人的安全隐患。
三、采煤机截割风巷煤帮时，存在桁架、锚索、钢带等铁器进入煤流线卡堵刮板机现象，造成长时间停机，而此时机窝未施工完毕，机尾顶板也处于长时间空顶状态，增加了安全隐患。
四、生产过程中，机尾液压支架因老化存在动作不灵敏、延迟现象，移架时造成顶板进一步破碎。
五、受采动影响机窝段煤体裂隙较发育，煤壁易片帮、顶板较破碎，采煤机施工机窝需多次清理底板浮煤，且顶板破碎时需停机移架，相应顶板空顶时间长，增加安全隐患。对照综采工作面施工日志发现，平均每循环施工机窝用时在30分钟以上，严重影响生产。
根据本申请方法步骤对综采工作面进行综合支护之后的效果：
1、对刮板机机尾破碎顶板采取支设钢筋网及半圆木和超前注浆加固后，消除了刮板机机尾破碎顶板冒漏现象，确保了综采工作面的快速推进，平均每循环节约用时20分钟左右，每天可增加2-3个循环，有效的提高了综采工作面设备开机率。
2、有效防止了漏顶现象，减少了人员进入顶板破碎区域作业的安全隐患，提高了安全系数。
综采工作面消除了漏顶事故的发生后，增加了员工作业时的安全系数，节省了每次处理漏顶所使用的化学加固材料。平均每月5.6次漏顶，每次处理漏顶平均使用化学加固材料20吨，化学加固料12900元/吨，费用为144.4万元，现采取超前预注浆的方式维护破碎顶板，每个月仅消耗30吨化学加固材料，费用为38.7万元，每月可节省材料费144.4-38.7＝105.7万元。通过对刮板机机尾顶板和截割后风巷上帮采取综合支护措施后，综采工作面消除了漏顶事故的发生，大幅缩减了每循环用时，平均每天完成循环数由2-3个增加至4-5个，每天可多生产原煤2700吨，每月可多生产原煤8.1万吨。我矿成品煤吨煤单价为大块735元/吨，中块730/吨，小块606元/吨，选末煤400元/吨，完全成本为159.47元/吨。经济效益＝循环数×循环产量×(吨煤单价-完全成本)。块煤吨煤单价取平均值690元/吨，块煤率为30％，经计算，块煤每天增加经济效益为：2×1350×(690-159.47)×0.3＝43万元，末煤每天增加经济效益为：2×1350×(400-159.47)×0.6＝39万元；每月增加经济效益为：每天增加经济效益×27＝(43+39)×27＝2214万元。实现了采煤工作面在大动压条件下的安全高效开采，通过采用本申请的支护顶板加固处理，超前注射化学加固料以及锚网支护三方面措施对煤矿综采工作面进行综合支护，不仅能够有效的防止顶板冒漏事故，使得综采工作面安全高效的推进，还提高原煤产量，降低材料消耗，显著增加经济效益。
本领域技术人员在考虑说明书及实践这里公开的发明后，将容易想到本发明的其它实施方案。本申请旨在涵盖本发明的任何变型、用途或者适应性变化，这些变型、用途或者适应性变化遵循本发明的一般性原理并包括本发明未公开的本技术领域中的公知常识或惯用技术手段。说明书和实施例仅被视为示例性的，本发明的真正范围和精神由权利要求指出。
应当理解的是，本发明并不局限于上面已经描述并在附图中示出的精确结构，并且可以在不脱离其范围进行各种修改和改变。本发明的范围仅由所附的权利要求来限制。

Claims (13)

  1. 一种煤矿综采工作面综合支护方法，其特征在于，所述方法包括：
    刮板机机尾每推进一刀，在所述刮板机机尾相对应的支架前梁上铺设金属网；
    采用加固装置对所述金属网进行加固处理；
    对所述刮板机机尾和风巷范围内的顶板利用超前注射化学加固料的方法进行加固；
    采煤机截割风巷上帮后，对截割后的上帮进行锚网支护。
  2. 如权利要求1所述的煤矿综采工作面综合支护方法，其特征在于，所述加固装置为半圆木，所述金属网为钢筋网，所述半圆木利用铆钉将所述钢筋网与顶板相固定，所述半圆木的长度小于所述金属网的宽度。
  3. 如权利要求1所述的煤矿综采工作面综合支护方法，其特征在于，所述对所述刮板机机尾和风巷范围内的顶板利用超前注射化学加固料的方法进行加固包括：
    在所述刮板机机尾相对应支架前距顶板1m处以45°仰角打第一注浆眼；
    在风巷超前外5～6m处靠下帮打设第二注浆眼；
    向所述第一注浆眼和所述第二注浆眼注射加固料。
  4. 如权利要求3所述的煤矿综采工作面综合支护方法，其特征在于，所述第一注浆眼的深度为4米，所述第二注浆眼的深度为2m。
  5. 如权利要求3所述的煤矿综采工作面综合支护方法，其特征在于，所述向所述第一注浆眼和所述第二注浆眼注射加固料的加固料注射量为20-30桶，其中，每桶内盛有25Kg所述加固料。
  6. 如权利要求1所述的煤矿综采工作面综合支护方法，其特征在于，所述采煤机截割风巷上帮后，对截割后的上帮进行锚网支护包括：
    风巷帮部挂多个菱形金属网，所述菱形金属网压于帮部锚杆下部，相邻两个所述菱形金属网之间通过铁丝扣相连接，所述菱形金属网和所述帮部锚杆之间还设置有托板。
  7. 如权利要求6所述的煤矿综采工作面综合支护方法，其特征在于，所述帮部锚杆设置为两排，两排所述帮部锚杆的间距为900*900mm，所述帮部锚杆为φ16*1600mm圆钢锚杆。
  8. 如权利要求6所述的煤矿综采工作面综合支护方法，其特征在于，所述托板为穹型木托板或穹型铁托板，所述托板的大小为150*150*10mm。
  9. 如权利要求6所述的煤矿综采工作面综合支护方法，其特征在于，所述帮部锚杆内部充填两节Z2335树脂药卷，所述帮部锚杆的预紧力矩大于或等于200N*m。
  10. 如权利要求1所述的煤矿综采工作面综合支护方法，其特征在于，所述对所述刮板机机尾和风巷范围内的顶板利用超前注射化学加固料的方法进行加固包括：
    在所述刮板机机尾相对应支架前距顶板第一预设距离处以预设仰角打第一注浆眼；
    在风巷超前外第二预设距离处靠下帮打设第二注浆眼；
    向所述第一注浆眼和所述第二注浆眼注射加固料。
  11. 如权利要求10所述的煤矿综采工作面综合支护方法，其特征在于，所述第一注浆眼打在待处理综采工作面上方顶板内，所述第二注浆眼打在风巷上方顶板内，其中，所述第二注浆眼超前于所述第一注浆眼。
  12. 如权利要求11所述的煤矿综采工作面综合支护方法，其特征在于，所述第一注浆眼在待处理综采工作面上方顶板内的深度大于或等于所述第一注浆眼内加固料的扩散半径，所述第二注浆眼在风巷上方顶板内的深度大于或等于所述第二注浆眼内加固料的扩散半径。
  13. 如权利要求12所述的煤矿综采工作面综合支护方法，其特征在于，所述第一注浆眼内加固料的扩散区域与所述第二注浆眼内加固料的扩散区域相交。
PCT/CN2019/130568 2019-05-24 2019-12-31 一种煤矿综采工作面综合支护方法 WO2020238210A1 (zh)

Priority Applications (1)

Application Number Priority Date Filing Date Title
ZA2020/07716A ZA202007716B (en) 2019-05-24 2020-12-10 Comprehensive supporting method for a fully mechanized mining face of a coal mine

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201910438554.2A CN110130926B (zh) 2019-05-24 2019-05-24 一种煤矿综采工作面综合支护方法
CN201910438554.2 2019-05-24

Publications (1)

Publication Number Publication Date
WO2020238210A1 true WO2020238210A1 (zh) 2020-12-03

Family

ID=67573159

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2019/130568 WO2020238210A1 (zh) 2019-05-24 2019-12-31 一种煤矿综采工作面综合支护方法

Country Status (3)

Country Link
CN (1) CN110130926B (zh)
WO (1) WO2020238210A1 (zh)
ZA (1) ZA202007716B (zh)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112712035A (zh) * 2020-12-30 2021-04-27 精英数智科技股份有限公司 采煤机跟机移架检测方法、装置及系统
CN113914867A (zh) * 2021-10-12 2022-01-11 国能神东煤炭集团有限责任公司 一种在上分层采空区下掘进下分层切眼的顶板加固方法
CN114360176A (zh) * 2021-12-15 2022-04-15 中煤科工开采研究院有限公司 一种综采工作面安全监测方法
CN114575843A (zh) * 2022-02-10 2022-06-03 辽宁工程技术大学 一种浅埋薄基岩回收大巷煤柱工作面的回采方法
CN115405343A (zh) * 2022-09-30 2022-11-29 安徽理工大学 一种用于煤矿锚网注一体支护施工的锚杆台车及施工方法

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110130926B (zh) * 2019-05-24 2021-01-05 翟文 一种煤矿综采工作面综合支护方法
CN112855157A (zh) * 2021-02-25 2021-05-28 安徽理工大学 一种大倾角顶板漏冒-煤壁片帮-支架倒滑的控制方法
CN113638751A (zh) * 2021-09-03 2021-11-12 中煤能源研究院有限责任公司 一种预制墩柱加强巷道支护方法

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20070243026A1 (en) * 2006-04-18 2007-10-18 Mansour Mining Inc. Detachable anchor bolt mixing head for use in mine roof support systems and method of using same
CN102777182A (zh) * 2012-08-11 2012-11-14 山西晋城无烟煤矿业集团有限责任公司 大采高工作面快速末采方法
CN103775084A (zh) * 2014-01-26 2014-05-07 四川川煤华荣能源股份有限公司花山煤矿 大倾角、大采高综采设备过地质构造破碎带施工工艺
CN106930763A (zh) * 2017-03-21 2017-07-07 太原理工大学 一种充填复采特厚煤层残采区护巷煤柱的方法
CN110130926A (zh) * 2019-05-24 2019-08-16 翟文 一种煤矿综采工作面综合支护方法

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101349159B (zh) * 2008-08-23 2010-06-02 山西焦煤集团有限责任公司 一种单通道无轨胶轮车回撤综采工作面的方法
CN101457651B (zh) * 2008-11-19 2010-09-01 淮南矿业(集团)有限责任公司 煤气共采y型通风系统中沿空留巷的充填垛超前支护方法
CN102966359A (zh) * 2012-11-09 2013-03-13 山西潞安环保能源开发股份有限公司 工作面过风氧化带区顶板控制方法
CN105863639B (zh) * 2016-05-27 2018-01-16 安徽理工大学 松散煤层的采煤方法
CN109083663A (zh) * 2018-08-24 2018-12-25 淮北矿业股份有限公司 一种用于煤矿井下综采工作面的拆除装置
CN109779652B (zh) * 2018-12-03 2021-02-02 李洪彪 一种煤矿软岩工作面回风巷扩修和支护方法

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20070243026A1 (en) * 2006-04-18 2007-10-18 Mansour Mining Inc. Detachable anchor bolt mixing head for use in mine roof support systems and method of using same
CN102777182A (zh) * 2012-08-11 2012-11-14 山西晋城无烟煤矿业集团有限责任公司 大采高工作面快速末采方法
CN103775084A (zh) * 2014-01-26 2014-05-07 四川川煤华荣能源股份有限公司花山煤矿 大倾角、大采高综采设备过地质构造破碎带施工工艺
CN106930763A (zh) * 2017-03-21 2017-07-07 太原理工大学 一种充填复采特厚煤层残采区护巷煤柱的方法
CN110130926A (zh) * 2019-05-24 2019-08-16 翟文 一种煤矿综采工作面综合支护方法

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
YANG, LIN ET AL.: "Special Treatment Technology of Large Dip and Soft Coal Seam Full-mechanized Face in Combined Roof Conditions", COAL TECHNOLOGY, vol. 34, no. 04, 30 April 2015 (2015-04-30), pages 1 - 3, XP055761927, ISSN: 1008-8725 *

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112712035A (zh) * 2020-12-30 2021-04-27 精英数智科技股份有限公司 采煤机跟机移架检测方法、装置及系统
CN113914867A (zh) * 2021-10-12 2022-01-11 国能神东煤炭集团有限责任公司 一种在上分层采空区下掘进下分层切眼的顶板加固方法
CN114360176A (zh) * 2021-12-15 2022-04-15 中煤科工开采研究院有限公司 一种综采工作面安全监测方法
CN114575843A (zh) * 2022-02-10 2022-06-03 辽宁工程技术大学 一种浅埋薄基岩回收大巷煤柱工作面的回采方法
CN114575843B (zh) * 2022-02-10 2024-05-03 辽宁工程技术大学 一种浅埋薄基岩回收大巷煤柱工作面的回采方法
CN115405343A (zh) * 2022-09-30 2022-11-29 安徽理工大学 一种用于煤矿锚网注一体支护施工的锚杆台车及施工方法

Also Published As

Publication number Publication date
ZA202007716B (en) 2022-06-29
CN110130926B (zh) 2021-01-05
CN110130926A (zh) 2019-08-16

Similar Documents

Publication Publication Date Title
WO2020238210A1 (zh) 一种煤矿综采工作面综合支护方法
CN104481568B (zh) 一种综放工作面沿空留巷工艺与通风方法
CN105019924B (zh) 一种强力顶板支护墩柱和用于保护区段煤柱的方法
CN113107488B (zh) 一种煤矿综采工作面顶板治理方法
CN107387084A (zh) 一种沿空留巷减少切顶深度的施工方法
CN110130978B (zh) 一种充填复采小窑破坏区厚煤层破碎煤帮封堵方法
CN110455140B (zh) 一种高强度岩层山岭隧道切割施工方法
CN103742171A (zh) 一种回采巷道巷间煤柱加固的方法
CN102720498A (zh) 采煤工作面沿空留巷开采工艺方法
CN102418525B (zh) 软煤层长壁大采高综合机械化采煤末采方法
CN111878101B (zh) 开敞式tbm施工时采用伸缩式安全壳防护岩爆的方法
CN102322261A (zh) 大采高综采工作面小煤柱等压过空巷方法
CN107387083A (zh) 一种利用矸石支撑的中厚煤层沿空留巷巷旁支护体构筑方法
CN109763861A (zh) 一种切眼内断层破碎带冒顶处理方法
CN106968671A (zh) 煤矿井下采煤工作面回撤通道充填回撤方法
CN109577981A (zh) 一种厚煤层大巷煤柱回收方法
CN110925017A (zh) 一种大倾角中厚煤层走向长壁开采异形沿空巷道留设与支护方法
CN104895592A (zh) 综采综放工作面支架回撤支护方法
CN109779652A (zh) 一种煤矿软岩工作面回风巷扩修和支护方法
CN110985083B (zh) 一种回采巷道垛式支架支护系统及方法
CN104405392B (zh) 三软厚煤层巷道托顶留底锚网索主动支护综放开采方法
CN113153295A (zh) 极厚硬煤开采方法
CN104763456B (zh) 采煤坑道收作巷或回空区支撑支架及回撤液压支架的方法
CN114607449A (zh) 一种综放工作面过断层瓦斯与煤自燃协同治理方法
CN110424998B (zh) 一种用于极近距离煤层采空区下综采工作面的回撤工艺

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 19930859

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 19930859

Country of ref document: EP

Kind code of ref document: A1