China University of Mining and Technology

Nanjing Tech University

China Construction Industrial & Energy Engineering Group Co., Ltd.

Jiangsu Channelon Electronics Group Co., Ltd.

Xuzhou Xugong Energy Equipment Co., Ltd

Hanyi Bio-technology Company Ltd.

Meng Li

Jixiong Zhang

Nan Zhou

Qiang Zhang

Hao Yan

Wenyue Qi

Jiaqi Wang

Zhongya Wu

Hengfeng Liu

Zheng Chen

Feng Gao

Yang Ju

Ke Zhang

Zhaohui Yu

Dan Ma

Qiang Sun

Xin Tan

Kai Sun

Jiguang Zhang

Ming Hu

Dong Chen

Rui Gao

Qiang Li

Wentao Hou

Xuefeng Gao

Wei Yin

Hong Yan

Peng Huang

Weiqing Zhang

Yong Liu

Qiang Cao

Wei Liu

Xianwen Cai

Xiaobao Luo

Ligang Wang

Depeng Li

Chengchu Yan

Yizhe Xu

Yumao Lin

Tao Deng

Ven Chian Quek

Fumio Kurebayashi

A J S (Sam) Spearing

Xiaorui Liu

Cunli Zhu

Yanan Wu

Azim A Azmil

Yiming Cao

Guodong Kang

Zhephak Chan

Jingxuan Jia

A cooperative control optimization method suitable for a near-field fan wall micromodule, comprising the following steps: step: obtaining IT system scheduling data and air-conditioning system data of the near-field fan wall micromodule within a preset period of time, and separately establishing a micromodule server real-time power model, an air-conditioning system power model, and a rapid server temperature prediction model; and step: performing cooperative control on deployment of virtual machines and an air-conditioning system by using an optimization method of combining real-time joint optimization and timed decoupling optimization based on the micromodule server real-time power model, the air-conditioning system power model, and the rapid server temperature prediction model. The present invention provides a cooperative control optimization method suitable for a near-field fan wall micromodule, to resolve the technical problem that local hot spots and overcooling are prone to occur during energy-saving scheduling of a near-field fan wall micromodule.

Cooperative control optimization method suitable for near-field fan wall micromodule

Disclosed a method, a system, a device, and a medium for determining load-bearing deformation of solid waste materials. The method includes: obtaining a bulk sample of solid waste material, sieving the sample to obtain multiple particle sizes, and measuring the mass of each particle size before the experiment; performing a compaction experiment on the bulk sample to obtain a stress-strain relationship curve, and calculating a slope of a linear part; sieving the bulk sample after the compaction experiment to obtain multiple particle sizes, and measuring a mass of each particle size; plotting a mass ratio diagram before and after the experiment, and calculating a relative breakage rate Band a measured fractal dimension; constructing a macroscopic strain relationship equation, substituting the measured fractal dimension into the equation to obtain a macroscopic strain, and thereby determining load-bearing deformation degree of the solid waste materials.

Method for determining load-bearing deformation of solid waste materials and system and device and medium thereof

A motor and a torque transducer box, an end cover front panel is installed at a front portion of the motor, the torque transducer box is installed at a front portion of the end cover front panel, a transmission pole is installed in the an extrusion rotating wheel, thermal dissipation and explosion proof boxes are installed on a surface of the motor, a sealing and thermal insulation module is installed at a front portion of the transmission pole, two sets of cable wrapping posts are symmetrically provided at the surface of the motor, and two sets of correction boxes are symmetrically provided at a surface of a rotor assembly.

Hub motor with internally provided torque transducer

Provided are a system and a method for monitoring bearing compression rate of a filler in a coal mine gob area. An ground information processing system, a vibration source control system, and a monitoring system are arranged on the ground according to a buried depth of the filler in the gob area. The vibration source control system generates vibration, and transmits a signal to the filler. The monitoring system on the ground receives different reflected waves according to different elasticities of the fillers under different compaction degrees. Final data is transmitted to the ground information processing system for data processing. The monitoring of the filler starts when the filler is filled in the gob area; the filler is gradually compacted. The filler is monitored until the thickness of the filler does not change. Finally, a bearing compression rate formula is utilized to calculate the bearing compression rate of the filler.

System and method for monitoring bearing compression rate of filler in coal mine gob area

Provided is a method for radially mining open-pit end slope pressed coal, including: L-shaped or U-shaped main tunnel arrangements, and radially mining; branch tunnels are formed by excavating tunnels in directions perpendicular to or obliquely crossing the main tunnel from the L-shaped or U-shaped main tunnel; In the mining method, a coal mining system and a transportation system both adopt a remote control mode, a tunneling machine excavates a tunnel to product coal; a rubber belt conveyor conveys coal; the main tunnel adopts an exhaust ventilation mode, the branch tunnels adopt a blowing ventilation mode; the lengths of the branch tunnels do not exceed a farthest control distance of a remote control system; the length of each main tunnel needs to ensure that all the end slope pressed coal is mined under the premise that the branch tunnels do not exceed the farthest control distance of the remote control system.

Method for radially mining open-pit end slope pressed coal

Provided is a method for recovering room-type coal pillars by cemented filling of reserved roadways, which is especially suitable for safe and efficient recovery of left coal pillars in room-type mining faces in mining areas where the ecological system is fragile, such as in western China. In the method, by constructing reserved roadways in two adjacent rows of room-type goafs, excavating coal pillar roadways in room-type coal pillars, and finally interconnecting the reserved roadways with the coal pillar roadways to form a U-shaped working face, room-type left coal pillars are recovered. Thus, not only the workload of roadway excavation is reduced, but also the recovery ratio of the coal resources is maximized. The method provides a novel technical model for the recovery of room-type left coal pillars in mining areas, such as in western China.

Method for recovering room-type coal pillars by cemented filling of reserved roadways

An internally injected replacement support room-type coal pillar recovery method is provided. During the recovery, the room-type coal pillars with an aspect ratio greater than 0.6 are divided into two parts: reserved coal pillars and pre-mined coal pillars. After the mining of the pre-mined coal pillars, a cemented filling material is injected into a goaf surrounded by the reserved coal pillars, and is stabilized to replace the coal pillars for support, and the reserved coal pillars are recovered. A mechanical model of the reserved coal pillars in a support overburden stage is established based on the Winkler beam theory, to obtain displacement and stress conditions of a roof of the reserved coal pillar in a support stage. A theoretical reserve-width of the reserved coal pillars is obtained according to a first strength theory of the roof and a criterion of ultimate strength of the reserved coal pillars.

Internally injected replacement support room-type coal pillar recovery method

A method of recovering a room-and-pillar coal pillar by using external replacement supports. In the recovery of a room-and-pillar coal pillar, a cement material wall is formed by performing pouring around a coal pillar having a width to height ratio of less than 0.6, by means of a single-pillar sack arrangement technique, such that a coal pillar resource may be mined while a wall made from a cement filling material supports an overlying stratum. After mining is complete, a coal pillar goaf region is filled with the cement filling material, and after the cement filling material solidifies and is stable, the single pillar can be recovered.

Method of recovering room-and-pillar coal pillar by using external replacement supports

Provided is a base mechanism of a single prop capable of being unloaded at reduced pressure, including a base bottom plate and two wedge-shaped support blocks, where one of the wedge-shaped support blocks serves as a fixed wedge-shaped support block and is welded onto the base bottom plate, and the other of the wedge-shaped support blocks serves as a movable wedge-shaped support block and is connected to the fixed wedge-shaped support block by using a screw rod and a nut. The present invention can effectively unload the single prop at reduced pressure or remove the single prop in a contracted manner, is of a simple structure, is convenient to operate, has a good use effect, overcomes the technical problem that it is difficult to unload a single prop at reduced pressure in this technical feature, and is widely applicable in this technical field.

Base mechanism of single prop capable of being unloaded at reduced pressure

The present invention discloses a process method for withdrawing and recovering a mechanical constant-resistance single prop, specific steps involving: detecting a working resistance and a degree of deformation of a mechanical constant-resistance single prop, releasing lug clamp bolts of a recoverable base, knocking a lower portion of a cylinder body of the mechanical constant-resistance single prop to disengage the mechanical constant-resistance single prop from the recoverable base, and dismantling the mechanical constant-resistance single prop. Parts are classified and recovered based on degree of deformation thereof. By means of the foregoing method, a process of withdrawing and recovering a mechanical constant-resistance single prop is standardized, simple and fast disengagement of the mechanical constant-resistance single prop is achieved, and parts that can still be used can be sufficiently recovered and reused, thereby achieving the objectives of saving energy and reducing costs.

Process method for withdrawing and recovering mechanical constant-resistance single prop

A solid-filling coal mining feeding and conveying monitoring system, suitable for monitoring of a vertical feeding and conveying system in underground mine solid-filling mining. The monitoring system mainly consists of an industrial control computer, a PLC control box, an operating platform, a liquid crystal display, a color four-picture divider, two video optical receivers and loudspeakers, four cameras, uphole electronic belt scales, downhole electronic belt scales, a radar level meter, a coal level sensor, a vibration sensor, and various matching junction boxes and cables, the components being installed in positions such as a material field, a control room, upper and lower openings of a storage silo, and a gangue transportation lane. The system implements four main functions of a solid-filling material transportation and feeding process, the four main functions being status monitoring, a full silo alarm, centralized control, and recording and querying. The monitoring content of the system is comprehensive; operation of the system is simple; and the system is safe and reliable.

Solid-filling coal mining feeding and conveying monitoring system

A mechanical rocker-arm type vertical feeding cushioning device, consisting of two identical cushioning units and a box body (). The two cushioning units are respectively arranged with a certain height difference on the inner side of the box body (). Each cushioning unit consists of a cushioning mechanism and a fixing hinge mechanism. The cushioning mechanism is composed of a cushioning plate (), a spring () and a balance weight (). The fixing hinge mechanism is composed of a hinge plate (), a right angle circular rod () and an elastic limiting device (). The cushioning plate () is fixed to the hinge plate () via connection holes and using bolts. The hinge plate () is welded to the right angle circular rod (). The elastic limiting device () consists of two elastic limiting plates and a hollow iron ring in a welded manner. The right angle circular rod () is connected to the elastic limiting device () in a sleeved manner via the hollow iron ring of the elastic limiting device (). An upper end of the spring () is connected to the right angle circular rod (), and the balance weight () is suspended at a lower end of the spring (). Material is fed to the cushioning plates via a feeding pipe, and falls down after being cushioned twice by the cushioning plates (). The cushioning device repeatedly cushions and recovers under the joint effect of the cushioning plates () and the cushioning balances ().

Mechanical rocker arm-type vertical feeding cushioning device

Growing community of inventors

Jiangsu, China

Meng Li