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公开(公告)号：US09689258B2
公开(公告)日：2017-06-27
申请号：US15108727
申请日：2014-11-19
Applicant: CHINA UNIVERSITY OF MINING AND TECHNOLOGY
Inventor： Liqiang Ma , Zhiyuan Jin , Xiaomin Yu , Fei Wang , Hai Sun
IPC: E21F15/00
CPC classification number: E21F15/00
Abstract: A water-preserved-mining roof-contacted filling method for controlling fissure of overlying strata and surface subsidence. The method is suitable for controlling fissure of overlying strata and surface subsidence in water-preserved-mining of a mine. A sensor is mounted at the top of a goaf of a filling working face where water-preserved-mining is carried out, and a filling body that is filled is monitored through a stress display device so as to determine whether the goaf is roof-contacted or separated. When the filling body is separated after roof-contacted, the goaf is filled for the second time so as to be roof-contacted fully, so that the purpose of controlling fissure of overlying strata and surface subsidence can be achieved, and protective mining of water resources of the mine can be realized at last. The method is simple and targeted, and has strong operability and high efficiency.
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222.发明授权公开(公告)号：US09689257B2
公开(公告)日：2017-06-27
申请号：US14418642
申请日：2014-01-22
Applicant: CHINA UNIVERSITY OF MINING AND TECHNOLOGY
Inventor： Guohua Cao , Jinjie Wang , Zhencai Zhu , Weihong Peng , Yandong Wang , Lei Zhang , Gang Shen , Shanzeng Liu
Abstract: A guide rail rope deflection inhibition mechanism and method for a parallel soft cable suspension system in ultradeep vertical shaft construction. The guide rail rope deflection inhibition mechanism comprises a T-shaped installation support base, a rotating frame, a hydraulic support rod, and a chuck. The T-shaped installation support base comprises a vertical support rod and a horizontal support rod. The hydraulic support rod comprises an upper hydraulic support rod and a lower hydraulic support rod. The rotating frame comprises an upper Y-shaped frame and a lower Y-shaped frame. The chuck comprises an upper chuck and a lower chuck. The guide rail rope deflection inhibition method treats two guide rail rope deflection inhibition mechanisms as one group, and arranges at least two groups along the vertical direction on the shaft wall. While guaranteeing the smooth sliding of a direction guiding frame, the freedom of the guide rail rope part is restrained by the chuck, thereby enhancing the stability and safety of hoisting containers.
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公开(公告)号：US09688513B2
公开(公告)日：2017-06-27
申请号：US14434012
申请日：2014-03-26
Inventor： Zhencai Zhu , Jiancong Qin , Guohua Cao , Guangfeng Mao , Wei Li , Gongbo Zhou , Beibei Fu , Hongbin Fei , Yiping Ma , Jianrong Yang
Abstract: An elevator anti-fall buffer based on flexible guidance. The anti-fall buffer is used for connecting and fixing an end part of a braking steel rope of an elevator. The anti-fall buffer has an upper support plate and a lower support plate, wherein a pulley set is provided on the upper support plate and the lower support plate, and a hydraulic damping buffer is provided at two sides of the pulley set. The anti-fall buffer uses the energy consumption principle of a hydraulic damping hole, and while protecting the braking steel rope from the force of impact created thereon by the elevator, prevents the force of impact from a spring on the elevator post-braking, improving the safety and reliability of elevator braking, thereby improving safety of an elevator, while also using a pulley set can increase the braking distance of the braking steel rope, thereby lengthening life of the steel rope.
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公开(公告)号：US20170152734A1
公开(公告)日：2017-06-01
申请号：US15323272
申请日：2015-12-21
Applicant: China University of Mining and Technology
Inventor： Baiquan Lin , Yidu Hong , Chuanjie Zhu , Hao Yao
Abstract: A method for thermal-displacement-type strengthened extraction in a drill hole, suitable for efficient gas extraction in a coal mine, the method comprising the following steps: arranging an extraction drill hole and a thermal displacement drill hole at intervals in a coal seam; continuously heating, by using a heat pipe (5), coal in the drill hole to form a stable temperature field; and significantly reducing gas adsorption potential by utilizing a heat effect, prompting gas desorption, and strengthening gas extraction. The method enlarges a range of effective pressure relief influence of a single hole, increases an extraction efficiency of gas in a coal seam by more than 40%, is safe, reliable and low-cost, and is easy to operate, and saves both time and labour.
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公开(公告)号：US20170138194A1
公开(公告)日：2017-05-18
申请号：US15319292
申请日：2015-05-13
Applicant: China University of Mining and Technology
Inventor： Feng JU , Xiexing MIAO , Jixiong ZHANG , Xuejie DENG , Xufeng WANG
CPC classification number: E21D23/0481 , E21D15/60 , E21D23/0004 , E21F13/008 , E21F15/02 , E21F15/06 , E21F15/08
Abstract: A method for removing a hydraulic support for solid filling coal mining includes digging a support removing channel (3) in a coal body (2) in front of the hydraulic support (1), and laying a support removing track (4), then removing the hydraulic support from a coal conveying gateway (11) to a track gateway (5), temporary supporting is carried out by matching a single supporting column with a n-type steel beam before each hydraulic support is removed. A supporting roof is reinforced in time by means of erecting a crib (13) and grouting after each hydraulic support is removed, three grouting pipelines (12) are laid after the supports of the whole work surface are removed, and grouting is carried out in the whole finishing cut space. The roof of the support removing space of the work surface is stable so that the hydraulic supports on the work surface of solid filling coal mining are ensured to be safely and efficiently removed.
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Patent Agency Ranking
公开(公告)号：US20170122822A1
公开(公告)日：2017-05-04
申请号：US15318877
申请日：2015-07-31
Applicant: CHINA UNIVERSITY OF MINING AND TECHNOLOGY
Inventor： Enyuan WANG , Yabo WANG , Xiaofei LIU , Siheng WANG
CPC classification number: G01L5/0004 , E21C39/00 , E21F17/18
Abstract: A multipoint coal and rock mass stress real-time monitoring device. The device is composed of a plurality of capsule pressure sensors (1), connection rods (2), three-way valves (3), a multichannel monitor (4), a multichannel control valve (5), first high-pressure oil pipes (6), second high-pressure oil pipes (7), third high-pressure oil pipes (8), a four high-pressure oil pipe (9), a high-pressure oil pump (10) and monitoring substations (11). The present invention also relates to a multipoint coal and rock mass stress real-time monitoring method. Oil is injected into each capsule pressure sensor (1) that is arranged in a drilled hole through the multi-channel control valve (5), so that oil pressure inside each capsule pressure sensor (1) reaches the preset pressure, and the capsule pressure sensors and the coal and rock mass are well coupled; monitoring signals are synchronously collected, converted, stored and displayed by the multichannel monitor (4) or are transferred to a remote monitoring center through the monitoring substations (11). The device and method can be used for coal and rock dynamic disaster monitoring early warning such as coal and rock mass stress monitoring, mine pressure analysis, rock burst and coal and gas rush, and the stress and changes of the stress of multiple measuring points can be measured at the same time in the multiple drilled holes of the coal and rock mass.
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公开(公告)号：US09543872B2
公开(公告)日：2017-01-10
申请号：US14344887
申请日：2013-01-24
Applicant: China University of Mining and Technology
Inventor： Hao Chen
CPC classification number: H02P9/009 , H02P9/02 , H02P25/0925
Abstract: A control method for a switched reluctance generator employing dual switched-mode power converters does not require a position sensor. In the excitation stage, the upper tube and lower tube of the main switch of a phase in the power converter are switched on, and the phase current is detected. When the phase current rises to a preset threshold, the upper tube or lower tube of the main switch of the phase is switched off, changing the phase of the switched reluctance generator into a zero voltage natural freewheeling state. When the phase current drops to the valley value, the rotor position is the end position of maximum phase inductance of the phase. This rotor position is used as the switch-off position of the main switch of the phase of the switched reluctance generator, and the upper tube and lower tube for the main switch of the phase are switched off.
Abstract translation: 采用双开关电源转换器的开关磁阻发电机的控制方法不需要位置传感器。 在励磁阶段，电源转换器中相的主开关的上管和下管接通，检测相电流。 当相电流上升到预设阈值时，该相的主开关的上管或下管被切断，将开关磁阻发生器的相位改变为零电压自然续流状态。 当相电流下降到谷值时，转子位置是相位最大相电感的最终位置。 该转子位置用作开关磁阻发生器相位主开关的断开位置，并且该相的主开关的上管和下管被切断。
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228.发明申请Integrated experimental system of hydrofracturing, water jet slotting, seepage and gas displacement under true triaxial stress 有权水力压裂综合实验系统，真空三轴应力下的喷水开槽，渗流和气体置换公开(公告)号：US20170003263A1
公开(公告)日：2017-01-05
申请号：US15110039
申请日：2015-04-20
Applicant: CHINA UNIVERSITY OF MINING AND TECHNOLOGY
Inventor： Bingxiang HUANG
Abstract: This invention relates to the coal mining field, specifically, to an integrated experimental system of hydrofracturing, water jet slotting, seepage and gas displacement under true triaxial stress. This invention consists of true triaxial stress loading experimental framework, a loading system and a monitoring system. Under true triaxial stress, experiments can be conducted with sample size as large as of 500 mm×500 mm×500 mm. The hydrofracturing experiment can be controlled by as many as 5 independent boreholes at the same time. The borehole water pressure in hydraulic fracturing can reach 63 MPa. Experiments of seepage and fluid-structure interaction with high seepage pressure can be achieved with sample dimension as large as 400 mm×400 mm×400 mm. Mine-used experimental bench of high pressure pump with rated flow of 70 L/min and maximum water pressure of 70 MPa can be used to drill borehole and the like.
Abstract translation: 本发明涉及采煤领域，特别涉及在真正的三轴应力下的水力压裂，喷水开槽，渗流和气体置换的综合实验系统。 本发明由真三轴应力加载实验框架，加载系统和监测系统组成。 在真实的三轴应力下，可以进行样品尺寸为500mm×500mm×500mm的实验。 水力压裂实验可同时控制多达5个独立钻孔。 水力压裂井眼水压可达63 MPa。 样品尺寸大到400 mm×400 mm×400 mm时，可以实现渗漏和流体 - 结构相互作用的高渗透压力实验。 采用70L / min额定流量和70MPa最大水压的高压泵的矿用实验台可用于钻孔等。
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公开(公告)号：US09494037B2
公开(公告)日：2016-11-15
申请号：US14891288
申请日：2014-01-22
Applicant: CHINA UNIVERSITY OF MINING AND TECHNOLOGY
Inventor： Jixiong Zhang , Nan Zhou , Qiang Zhang , Jiwei Guo , Xiaoming Shen , Feng Ju , Haiqiang Jiang
CPC classification number: E21F15/02 , E21C41/04 , E21C41/16 , E21D23/0481
Abstract: In an inclined layered solid-filling mining method in an ultrathick coal layer, tunnels and equipment are arranged according to a solid-filling mining method. An artificial roof for a lower layer is formed by metal meshes and bamboo fences of a first layer a solid-filling mining method. The method is repeated, until the entire ultrathick coal layer is finished. The method is repeated forming additional roofs for subsequent layers.
Abstract translation: 在超薄煤层倾斜层状固体填充开采方法中，根据固体填充开采方法布置隧道和设备。 用于下层的人造屋顶由第一层的金属网和竹栅栏形成为固体填充开采方法。 重复该方法，直到整个超薄煤层完成。 该方法重复形成后续层的附加屋顶。
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230.发明授权Device and method for detecting the tension on a guide rope of a hanging scaffold in a construction shaft 有权用于检测施工井中吊架的导绳上的张力的装置和方法公开(公告)号：US09488558B2
公开(公告)日：2016-11-08
申请号：US14411080
申请日：2014-06-05
Applicant: CHINA UNIVERSITY OF MINING AND TECHNOLOGY
Inventor： Guohua Cao , Yandong Wang , Zhencai Zhu , Weihong Peng , Jinjie Wang , Shanzeng Liu , Gang Shen , Hao Lu
Abstract: The present invention discloses a device and a method for detecting the tension on a guide rope of a hanging scaffold in a construction shaft. The guide rope is released by a winch, rounds over a hoisting sheave, is connected to the hanging scaffold, and then is tensioned up; the hoisting sheave is disposed at a position above the winch, and the device comprises a slide device, two tension ropes, and a pull rope, wherein, the slide device is fitted around the guide rope, the two tension ropes are fixed to the two sides of the slide device respectively and arranged parallel to the guide rope, the pull rope is fixed to the lower part of the slide device and arranged perpendicular to the guide rope. On the basis of the basic principles of mechanics, the force applied on the guide rope can be calculated indirectly according to the proportional relation between the forces applied on the tension rope and guide rope and the lengths of the ropes. The device disclosed in the present invention is simple, and the method disclosed in the present invention is skillful. The device and method are applicable to thick and thin steel wire ropes and highly universal, and are low in cost.
Abstract translation: 本发明公开了一种用于检测施工井中吊架的导绳上的张力的装置和方法。 导绳由绞车释放，绕着吊装滑轮，连接到吊架上，然后张紧; 吊装滑轮设置在绞盘上方的位置，该装置包括滑动装置，两根拉力绳和拉绳，其中，滑动装置围绕导绳安装，两根拉力绳固定于两根 滑动装置的两侧分别平行于导绳布置，拉绳固定到滑动装置的下部并垂直于导绳布置。 根据力学的基本原理，施加在导绳上的力可以根据施加在拉力绳和导绳上的力与绳索的长度之间的比例关系间接计算。 本发明公开的装置简单，本发明公开的方法是巧妙的。 该装置和方法适用于厚钢丝绳，高度通用，成本低。
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