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1:
[发明]
【中文】一种基于四向布井的原位热解流态化瓦斯抽采方法 【EN】In-situ pyrolysis fluidized gas extraction method based on four-way well arrangement
申请号:
201911373403.X
公开号:CN111173554A 主分类号:E21F7/00
申请人:
【中文】中国矿业大学【EN】China University of Mining and Technology
申请日:2019.12.27 公开日:2020.05.19
发明人:
【中文】翟成
;
徐吉钊
;
孙勇
;
丛钰洲
;
李宇杰【EN】Zhai Cheng
;
Xu Jizhao
;
Sun Yong
;
Cong Yuzhou
;
Li Yujie
摘要:【中文】一种基于四向布井的原位热解流态化瓦斯抽采方法,适用于预开采低孔渗易自燃煤层或封闭采空区遗留煤层的瓦斯流态化高效抽采。钻取四向水平钻井和周围四个瓦斯抽采钻井组成的钻井组,利用气体聚能爆破方法对水平钻井周围煤体进行致裂破碎,然后将多功能组配装置固定在可伸缩铜管前端并移动至适当位置;封孔后,将空气注入水平钻井内,启动电极击火器使破碎煤体发生阴燃。其步骤简单,使用效果好,有效提高瓦斯的流态化开采和后续的煤体采掘,极大地增加了煤与瓦斯的利用率,具有应用普适性、操作简单的优势。 【EN】An in-situ pyrolysis fluidization gas extraction method based on four-way well arrangement is suitable for gas fluidization efficient extraction of a low-hole-permeability spontaneous combustion coal seam or a closed goaf remaining coal seam. Drilling a drilling group consisting of a four-way horizontal drilling well and four surrounding gas extraction drilling wells, performing fracturing and crushing on coal around the horizontal drilling well by using a gas energy accumulation blasting method, and then fixing a multifunctional assembling device at the front end of a telescopic copper pipe and moving the multifunctional assembling device to a proper position; after hole sealing, injecting air into the horizontal drilling well, and starting the electrode fire lighter to enable the broken coal to be smoldered. The method has the advantages of simple steps, good use effect, effective improvement of fluidized mining of gas and subsequent coal body mining, great increase of the utilization rate of coal and gas, application universality and simple operation.
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2:
[发明]
【中文】一种高瓦斯煤层原位热解瓦斯流态化开采方法 【EN】High-gas coal seam in-situ pyrolysis gas fluidization mining method
申请号:
201911385708.2
公开号:CN111119982A 主分类号:E21F7/00
申请人:
【中文】中国矿业大学【EN】China University of Mining and Technology
申请日:2019.12.27 公开日:2020.05.08
发明人:
【中文】翟成
;
徐吉钊
;
辛海会
;
宋正昶【EN】Zhai Cheng
;
Xu Jizhao
;
Xin Haihui
;
Song Zhengchang
摘要:【中文】一种高瓦斯煤层原位热解瓦斯流态化开采方法,适用于低渗透性、低温强氧化性、高瓦斯含量煤层或封闭采空区遗留煤层使用。从地面向目标煤层或封闭采空区遗留煤层钻取水平钻井和瓦斯抽采钻井,利用爆破方式使得水平钻井周围产生大量的裂隙,竖井封孔,将适当流速的空气注入水平钻井内,当目标煤层或遗留煤层与少量空气接触一定时间后,使用击火器使煤层发生阴燃,升高的温度可诱发大量多尺度孔裂隙间的贯通,促进煤层中的吸附瓦斯解吸,同时,阴燃产生的CO
2
气体可有效驱替煤基质内吸附态瓦斯,使其沿着裂隙网络发生渗流扩散,最终经由瓦斯抽采钻井进行负压抽采。该方法可行性高,操作简单,能够最大限度地实现煤炭资源高效利用。 【EN】A high gas coal seam in-situ pyrolysis gas fluidization mining method is suitable for low-permeability, low-temperature and strong-oxidation coal seams with high gas content or closed goaf remaining coal seams. Drilling a horizontal well and a gas extraction well from the ground to a target coal seam or a closed goaf left coal seam, utilizing an explosion mode to enable a large number of cracks to be generated around the horizontal well, sealing holes in a vertical well, injecting air with proper flow rate into the horizontal well, using a fire igniter to enable the coal seam to be smoldered after the target coal seam or the left coal seam is contacted with a small amount of air for a certain time, and enabling the cracks of a large number of multi-scale holes to be communicated by the increased temperature to promote the desorption of adsorbed gas in the coal seam, and simultaneously, generating CO (carbon monoxide) by smoldering
2
The gas can effectively displace adsorbed gas in the coal matrix, so that seepage diffusion occurs along the fracture network, and finally the gas passes throughAnd performing negative pressure extraction on the gas extraction well. The method has high feasibility and simple operation, and can realize the high-efficiency utilization of coal resources to the maximum extent.
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3:
[发明]
【中文】碳纳米片的制备方法和正极材料及其制备方法 【EN】Preparation method of carbon nanosheet, positive electrode material and preparation method thereof
申请号:
201911182136.8
公开号:CN110931789A 主分类号:H01M4/587
申请人:
【中文】深圳大学【EN】SHENZHEN University
申请日:2019.11.27 公开日:2020.03.27
发明人:
【中文】曾燮榕
;
金文武
;
邹继兆
;
S·因古瓦
;
曾绍忠
;
徐国忠【EN】Zeng Xierong
;
Jin Wenwu
;
Zou Jizhao
;
S. Inguva
;
Zeng Shaozhong
;
Xu Guozhong
摘要:【中文】本发明属于纳米材料技术领域,具体涉及一种碳纳米片的制备方法和正极材料及其制备方法。该碳纳米片的制备方法包括如下步骤:提供铝源和4,4’‑联苯二甲酸;将所述铝源和4,4’‑联苯二甲酸溶于有机溶剂中进行加热处理,然后固液分离,得到自组装的铝基金属有机骨架;将所述铝基金属有机骨架依次进行碳化处理和酸处理,然后烘干,得到碳纳米片。该制备方法工艺简单,成本低廉,最终得到碳纳米片具有鳞片状的表面结构,而且具有分级多孔结构及超大的比表面积,无需额外的碳质活化及脱模板过程,可与硒复合作为锂硒离子电池的正极材料,具有很好的应用前景。 【EN】The invention belongs to the technical field of nano materials, and particularly relates to a preparation method of a carbon nano sheet, a positive electrode material and a preparation method of the positive electrode material. The preparation method of the carbon nano sheet comprises the following steps: providing an aluminum source and 4,4' -biphenyldicarboxylic acid; dissolving the aluminum source and the 4,4' -biphenyldicarboxylic acid in an organic solvent for heating treatment, and then carrying out solid-liquid separation to obtain a self-assembled aluminum-based metal organic framework; and sequentially carrying out carbonization treatment and acid treatment on the aluminum-based metal organic framework, and then drying to obtain the carbon nanosheet. The preparation method is simple in process and low in cost, the finally obtained carbon nanosheet has a scaly surface structure, a hierarchical porous structure and an ultra-large specific surface area, extra carbon activation and a template stripping process are not needed, the carbon nanosheet can be compounded with selenium to be used as a positive electrode material of a lithium selenium ion battery, and the preparation method has a good application prospect.
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4:
[发明]
【中文】一种多分层煤体的多级瓦斯流态化抽采方法 【EN】Multi-stage gas fluidized extraction method for multi-layered coal body
申请号:
201911373425.6
公开号:CN111005754A 主分类号:E21F7/00
申请人:
【中文】中国矿业大学【EN】China University of Mining and Technology
申请日:2019.12.27 公开日:2020.04.14
发明人:
【中文】翟成
;
徐吉钊
;
孙勇
;
丛钰洲
;
唐伟
;
郑仰峰【EN】Zhai Cheng
;
Xu Jizhao
;
Sun Yong
;
Cong Yuzhou
;
Tang Wei
;
Zheng Yangfeng
摘要:【中文】一种多分层煤体的多级瓦斯流态化抽采方法,适用于煤矿井下使用。先向目标煤层钻取多个共用同一竖向钻井的水平钻井和瓦斯抽采钻井,利用强化措施使水平钻井周围煤体发生破碎;然后利用三向阀连接可伸缩铜管,可伸缩铜管前端固定有装有多功能组配装置,将多功能组配装置放置于多个水平钻井设计位置后,将竖向钻井和瓦斯抽采钻井进行封孔,将富含O
2
的空气分级依次注入多个水平钻井内,通过实时监测水平钻井内的温度、气体浓度等相关参数,启动电极击火器,使得破碎煤体发生阴燃。煤体长时间阴燃过程可有效促进储层瓦斯的驱替扩散与解吸渗流。该方法操作简单,成本相对较低,可有效提高瓦斯抽采钻井内的瓦斯抽采效率。 【EN】A multi-stage gas fluidization extraction method for multi-layered coal bodies is suitable for underground coal mines. Firstly, drilling a plurality of horizontal drilling wells and gas extraction drilling wells which share the same vertical drilling well into a target coal seam, and crushing coal bodies around the horizontal drilling wells by using a strengthening measure; then, a three-way valve is used for connecting a telescopic copper pipe, a multifunctional assembly device is fixedly arranged at the front end of the telescopic copper pipe, after the multifunctional assembly device is placed at a plurality of horizontal drilling design positions, vertical drilling and gas extraction drilling are conducted to hole sealing, and the well drilling well is rich in O
2
The air is injected into a plurality of horizontal drilling wells in a grading mode in sequence, and the electrode fire-striking device is started through monitoring relevant parameters such as temperature and gas concentration in the horizontal drilling wells in real time, so that the broken coal body is smoldered. The long-time smoldering process of the coal body can effectively promote the displacement diffusion and desorption of reservoir gasAnd (4) seepage. The method is simple to operate, relatively low in cost and capable of effectively improving the gas extraction efficiency in the gas extraction well.
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5:
[发明]
【中文】一种流态化瓦斯抽采监测方法 【EN】Fluidized gas extraction monitoring method
申请号:
201911372116.7
公开号:CN110984962A 主分类号:E21B47/00
申请人:
【中文】中国矿业大学【EN】China University of Mining and Technology
申请日:2019.12.27 公开日:2020.04.10
发明人:
【中文】翟成
;
徐吉钊
;
辛海会
;
孙勇
;
郑仰峰
;
唐伟
;
丛钰洲
;
李宇杰【EN】Zhai Cheng
;
Xu Jizhao
;
Xin Haihui
;
Sun Yong
;
Zheng Yangfeng
;
Tang Wei
;
Cong Yuzhou
;
Li Yujie
摘要:【中文】一种流态化瓦斯抽采监测方法,适用于煤矿井下使用。首先向深部低渗煤层钻取水平钻井、监测钻井和瓦斯抽采钻井,利用液态CO
2
相变致裂技术破碎煤体;然后将多功能组配装置随可弯曲铜管送入水平钻井设计位置,钻井封闭后启动空气泵将空气按照设计流速注入煤层,将装有SF6示踪气体和探测器的容器送入监测钻井,通过实时监测水平钻井范围内即时温度、气体浓度和压力、及SF6气体的含量和变化,推算出煤体的阴燃程度及区域范围;综合煤体温度及产生的气体浓度变化,根据相关抽采参数评估瓦斯的抽采效率。该系统监测精准,应用方便,可大大提高瓦斯抽采的监测效率。 【EN】A fluidized gas extraction monitoring method is suitable for underground coal mines. Firstly, drilling a horizontal well, monitoring the well and pumping gas to the deep low-permeability coal seamProduction and drilling of wells using liquid CO
2
Crushing a coal body by a phase change cracking technology; then the multifunctional assembly device is sent to the designed position of the horizontal drilling well along with the bendable copper pipe, an air pump is started to inject air into the coal bed according to the designed flow rate after the drilling well is closed, a container filled with SF6 tracer gas and a detector is sent to a monitoring drilling well, and the smoldering degree and the regional range of the coal body are calculated by monitoring the instant temperature, the gas concentration and the pressure in the horizontal drilling well range and the content and the change of SF6 gas in real time; and (4) integrating the coal body temperature and the generated gas concentration change, and evaluating the gas extraction efficiency according to related extraction parameters. The system is accurate in monitoring and convenient to apply, and can greatly improve the monitoring efficiency of gas extraction.
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6:
[发明]
【中文】一种煤矿采空区坚硬顶板低温致裂放顶方法 【EN】Low-temperature fracturing roof caving method for hard roof of coal mine goaf
申请号:
202010179858.4
公开号:CN111173513A 主分类号:E21C41/18
申请人:
【中文】中国矿业大学
;
中国地质大学(北京)【EN】China University of Mining and Technology
;
China University of Geosciences (Beijing)
申请日:2020.03.16 公开日:2020.05.19
发明人:
【中文】翟成
;
郑仰峰
;
徐吉钊
;
丛钰州
;
孙勇
;
姚艳斌
;
唐伟
;
李宇杰【EN】Zhai Cheng
;
Zheng Yangfeng
;
Xu Jizhao
;
Cong Yuzhou
;
Sun Yong
;
Yao Yanbin
;
Tang Wei
;
Li Yujie
摘要:【中文】一种煤矿采空区坚硬顶板低温致裂放顶方法,适用于煤层采空区顶板强化致裂技术领域。利用数显式温度仪、温度传感器、注水管、低温流体冻结管、胶囊封孔器、高压注水系统和低温流体槽车,向采空区坚硬顶板依次施工多个致裂钻孔和一个空孔;将螺旋低温流体管、注水管与胶囊封孔器相连接送入多个致裂钻孔中,采用胶囊封孔器进行高压封孔,并冻结致裂钻孔孔口圆柱形扩孔段,形成自封孔结构,再对多个致裂钻孔进行冻结,利用水冰相变致裂煤层顶板。当温度传感器均升高到3℃以上时重复冻结,形成冻胀‑融化‑冻胀的循环致裂。利用低温流体进行水冰相变产生9.1%的膨胀率来致裂煤层坚硬顶板,其方法简单,操作方便,成本低廉,操作简单,致裂效果好。 【EN】A low-temperature fracturing roof caving method for a hard roof of a coal mine goaf is suitable for the technical field of strengthening fracturing of the roof of the coal mine goaf. Sequentially constructing a plurality of fracturing drill holes and a hollow hole on a hard top plate of the gob by utilizing a digital display type temperature instrument, a temperature sensor, a water injection pipe, a low-temperature fluid freezing pipe, a capsule hole packer, a high-pressure water injection system and a low-temperature fluid tank car; the method comprises the steps of connecting a spiral low-temperature fluid pipe, a water injection pipe and a capsule hole packer, sending the spiral low-temperature fluid pipe, the water injection pipe and the capsule hole packer into a plurality of fracturing drill holes, adopting the capsule hole packer to perform high-pressure hole sealing, freezing cylindrical hole expanding sections of the orifices of the fracturing drill holes to form a self-sealing hole structure, freezing the plurality of fracturing drill holes, and fracturing a coal seam roof by utilizing water-ice phase change. When the temperature of the temperature sensors is raised to be higher than 3 ℃, the temperature sensors are repeatedly frozen to form frost heaving-melting-frost heaving cyclic cracking. The method is simple, convenient to operate, low in cost, simple to operate and good in cracking effect.
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7:
[发明]
【中文】碳纳米材料的制备方法和正极材料及其制备方法 【EN】Preparation method of carbon nano material, positive electrode material and preparation method thereof
申请号:
201911258768.8
公开号:CN111106332A 主分类号:H01M4/36
申请人:
【中文】深圳大学【EN】SHENZHEN University
申请日:2019.12.10 公开日:2020.05.05
发明人:
【中文】曾燮榕
;
金文武
;
邹继兆
;
S·因古瓦
;
曾绍忠
;
徐国忠【EN】Zeng Xierong
;
Jin Wenwu
;
Zou Jizhao
;
S. Inguva
;
Zeng Shaozhong
;
Xu Guozhong
摘要:【中文】本发明属于纳米材料技术领域,具体涉及一种碳纳米材料的制备方法和正极材料及其制备方法。该碳纳米材料的制备方法,包括如下步骤:提供钴掺杂的锌基金属有机骨架,所述钴掺杂的锌基金属有机骨架中的有机骨架含有氮元素;将所述钴掺杂的锌基金属有机骨架依次进行碳化处理和酸处理,然后烘干,得到Co/N共掺杂的碳纳米材料。该制备方法到Co/N双掺杂超级碳结构的碳纳米材料,具有可控的碳结构、较大的比表面积,同时实现了Co/N双掺杂,当用于Li‑SeS
2
电池的正极材料时,该电极材料可以有效提高活性物质SeS
2
的利用率并阻止多硫/多硒化合物的在电解液中的扩散,此外,其在能储,电催化,气体吸附等领域均具有较大的应用前景。 【EN】The invention belongs to the technical field of nano materials, and particularly relates to a preparation method of a carbon nano material, a positive electrode material and a preparation method of the positive electrode material. The preparation method of the carbon nano material comprises the following steps: providing a cobalt-doped zinc-based metal organic framework, wherein the organic framework in the cobalt-doped zinc-based metal organic framework contains nitrogen elements; and sequentially carrying out carbonization treatment and acid treatment on the cobalt-doped zinc-based metal organic framework, and then drying to obtain the Co/N Co-doped carbon nano material. The carbon nano material with the Co/N double-doped super carbon structure prepared by the preparation method has a controllable carbon structure and a larger specific surface area, realizes Co/N double doping, and can be used for Li-SeS
2
When the positive electrode material of the battery is used, the electrode material can effectively improve the active material SeS
2
Utilization of and prevention of polysulfide/polyseleniumThe compound can diffuse in the electrolyte, and has wide application prospect in the fields of energy storage, electrocatalysis, gas adsorption and the like.
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8:
[发明]
【中文】一种智能药箱 【EN】Intelligent medicine box
申请号:
201911122097.2
公开号:CN110974691A 主分类号:A61J1/00
申请人:
【中文】广东电网有限责任公司汕尾供电局【EN】GUANGDONG POWER GRID CO., LTD. SHANWEI POWER SUPPLY BUREAU
申请日:2019.11.15 公开日:2020.04.10
发明人:
【中文】唐骥钊
;
许佳松
;
李广生
;
黄登城
;
罗继棉
;
周浩帆
;
林建川
;
李万达
;
佘基伟【EN】Tang Jizhao
;
Xu Jiasong
;
Li Guangsheng
;
Huang Dengcheng
;
Luo Jimian
;
Zhou Haofan
;
Lin Jianchuan
;
Li Wanda
;
She Jiwei
摘要:【中文】本发明公开了一种智能药箱,包括箱体、与手机进行通信的单片机、舵机和显示屏,单片机与舵机、显示屏相连接,用于控制舵机开关和显示屏的显示;单片机安装在药箱箱体的最下层,舵机安装在药箱箱体的盖子上,舵机通过单片机控制开合;所述显示屏内嵌在箱体顶端,箱体正面设有多层抽屉格,在箱体外部安装有用于控制抽屉格打开与关闭的按键;每个所述抽屉格包括多个格子,每个所述的格子中安装有传感器;通过所述传感器来判断是否放了药物,同时将药物放在药箱哪个位置的信息发送给手机。本发明在普通药箱的基础上配备了处理器芯片,芯片完成了识别、计算和控制等功能。本发明的智能药箱能由单片机控制打开药品放置层,无需手动打开和关闭。 【EN】The invention discloses an intelligent medicine box which comprises a box body, a single chip microcomputer, a steering engine and a display screen, wherein the single chip microcomputer is communicated with a mobile phone and is connected with the steering engine and the display screen and used for controlling the steering engine to be switched on and off and displaying on the display screen; the single chip microcomputer is arranged on the lowest layer of the medicine box body, the steering engine is arranged on the cover of the medicine box body, and the steering engine is controlled to open and close through the single chip microcomputer; the display screen is embedded in the top end of the box body, the front surface of the box body is provided with a plurality of layers of drawer grids, and a key for controlling the opening and closing of the drawer grids is arranged outside the box body; each drawer grid comprises a plurality of grids, and a sensor is arranged in each grid; whether the medicines are put or not is judged through the sensor, and information of the positions where the medicines are put in the medicine boxes is sent to the mobile phone. The invention is provided with a processor chip on the basis of a common medicine chest, and the chip completes the functions of identification, calculation, control and the like. The intelligent medicine box can be controlled by the single chip microcomputer to open the medicine placing layer without manual opening and closing.
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9:
[发明]
【中文】一种基于多参数监测的液氮循环冷冲击增透方法 【EN】Liquid nitrogen circulating cold shock permeability increasing method based on multi-parameter monitoring
申请号:
201911325754.3
公开号:CN111236907A 主分类号:E21B43/26
申请人:
【中文】中国矿业大学
;
山西西山煤电股份有限公司西铭矿
;
徐州海森德新材料有限公司【EN】China University of Mining and Technology
;
Ximing mine of Shanxi Xishan Coal Power Co., Ltd
;
XUZHOU HISEND NEW MATERIAL Co.,Ltd.
申请日:2019.12.20 公开日:2020.06.05
发明人:
【中文】翟成
;
丛钰洲
;
陈振宇
;
曹俊文
;
林传兵
;
徐吉钊
;
孙勇
;
郑仰峰
;
唐伟
;
李宇杰
;
周震【EN】Zhai Cheng
;
Cong Yuzhou
;
Chen Zhenyu
;
Cao Junwen
;
Lin Chuanbing
;
Xu Jizhao
;
Sun Yong
;
Zheng Yangfeng
;
Tang Wei
;
Li Yujie
;
Zhou Zhen
摘要:【中文】本发明公开了一种基于多参数监测的液氮循环冷冲击增透方法,视频监控镜头实时拍摄监测穿层钻孔中液氮内部产生气泡大小及产生气泡的流动速率并反馈给监测控制中心存储;质量传感器实时监测穿层钻孔中液氮的质量损失速率并反馈给监测控制中心存储;气体监测装置实时检测泄压管内的气体压力、气体流量和气体温度并反馈给监测控制中心存储;完成一次致裂后,然后采用SF
6
气体检测器、声波发射器和声波接收器对增透致裂效果进行检测,即声波速度能检测产生增透后产生裂隙的数量多少,而SF
6
气体检测能检测产生裂隙相互之间的连通性。通过监测数据实现液氮的冷冲击、相变气体的膨胀压力以及裂缝内水分的冻胀压力对煤体进行致裂,并能有效监测增透效果。 【EN】The invention discloses a liquid nitrogen circulating cold shock permeability increasing method based on multi-parameter monitoring, and a video monitoring lens shoots, monitors and obtainsThe size of bubbles generated in liquid nitrogen in the cross-layer drilling hole and the flow rate of the generated bubbles are fed back to the monitoring control center for storage; the quality sensor monitors the mass loss rate of the liquid nitrogen in the cross-layer drilling hole in real time and feeds the mass loss rate back to the monitoring control center for storage; the gas monitoring device detects the gas pressure, the gas flow and the gas temperature in the pressure relief pipe in real time and feeds the gas pressure, the gas flow and the gas temperature back to the monitoring control center for storage; after the primary fracturing is completed, SF is adopted
6
The gas detector, the sound wave emitter and the sound wave receiver detect the anti-reflection cracking effect, namely the sound wave speed can detect the quantity of cracks generated after anti-reflection, and SF
6
Gas detection can detect the connectivity of the resulting fractures to each other. The coal body is fractured by the cold impact of liquid nitrogen, the expansion pressure of phase change gas and the frost heaving pressure of water in the fracture through monitoring data, and the permeability increasing effect can be effectively monitored.
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10:
[发明]
【中文】一种利用液氮-热气冷热循环冲击的高效增透煤体方法 【EN】Method for efficiently increasing permeability of coal body by utilizing liquid nitrogen-hot gas cold and hot circulating impact
申请号:
201911325797.1
公开号:CN111075420A 主分类号:E21B43/26
申请人:
【中文】中国矿业大学【EN】China University of Mining and Technology
申请日:2019.12.20 公开日:2020.04.28
发明人:
【中文】翟成
;
丛钰洲
;
陈振宇
;
徐吉钊
;
孙勇
;
郑仰峰
;
唐伟
;
李宇杰
;
朱薪宇【EN】Zhai Cheng
;
Cong Yuzhou
;
Chen Zhenyu
;
Xu Jizhao
;
Sun Yong
;
Zheng Yangfeng
;
Tang Wei
;
Li Yujie
;
Zhu Xinyu
摘要:【中文】本发明公开了一种利用液氮‑热气冷热循环冲击的高效增透煤体方法,将液氮注入并气化吸热使煤体温度快速降低,煤体内的水分结冰膨胀对煤体施加结冰膨胀力致裂;同时气化后的氮气体积快速膨胀对煤体施加气体膨胀力致裂,钻孔内的气压快速增大,氮气经过排气管排出;然后停止液氮注入后,液氮在穿层钻孔内持续气化膨胀,对煤体施加气体膨胀力致裂,气化后的氮气回流回收;便于后续的重复使用;使热蒸气注入,使其对煤体施加气体冲击力致裂,同时使煤体温度快速升温利用温差对煤体致裂;然后热蒸气排出穿层钻孔,从而降低穿层钻孔内的气压使热蒸气能持续注入;如此重复循环,进行冷热交替对煤体进行冲击;从而有效缩短增透时间并保证增透效果。 【EN】The invention discloses a high-efficiency permeability-increasing coal body method utilizing liquid nitrogen-hot gas cold and hot circulation impact, which is characterized in that liquid nitrogen is injected and gasified to absorb heat so as to rapidly reduce the temperature of a coal body, and the water in the coal body is frozen and expanded to apply freezing expansion force to the coal body to crack; meanwhile, the gasified nitrogen rapidly expands in volume to apply gas expansion force to the coal body to crack, the air pressure in the drill hole is rapidly increased, and the nitrogen is discharged through an exhaust pipe; then after the liquid nitrogen injection is stopped, the liquid nitrogen is continuously gasified and expanded in the cross-layer drill hole, gas expansion force is applied to the coal body to crack, and the gasified nitrogen is recycled in a backflow mode; the subsequent repeated use is convenient; injecting hot steam to apply gas impact force to the coal body to crack, and simultaneously rapidly heating the coal body to crack the coal body by using temperature difference; then the hot steam is discharged out of the through-layer drill hole, so that the air pressure in the through-layer drill hole is reduced, and the hot steam can be continuously injected; the above-mentioned processes are repeatedly circulated, and the cold and hot processes are alternatively implemented to make impact on coal body; thereby effectively shortening the anti-reflection time and ensuring the anti-reflection effect.
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