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| 1 | Field experimental study on the cooling effect of mine cooling system acquiring cold source from return air显示文摘With the increase of mining depth, more and deeper coal mines are limited by heat disaster. The cooling energy in deep mine cooling system comes from mine water inrush or ground cooling tower, but we cannot adopt the two methods because mine water inrush in many old coal mines in China is limited. What is more, the cooling pipelines cannot be put in narrow pit-shaft. To settle the problem above, according to the characteristics of Zhangxiaolou Coal Mine, this paper adopts the deep mine return air as the cooling energy for deep mine cooling system. In addition, we carried out cite test to extract cold energy from return air. Through monitoring the water quantity, water temperature of cooling system and air temperature, we got the thermodynamic equilibrium parameters during the cooling energy acquisition analysis and the effect of cooling system that the temperature and humidity on working face are respectively reduced to 8-12 ℃ and 8-15% through cooling. This research offers experimental reference for deep mine cooling which lacks cooling energy. | Guo Pingye Chen Chen | 2013 | International Journal of Mining Science and Technology2013，23，3： | 8 |
| 2 | HEMS technique for heat-harm control and geo-thermal utilization in deep mines显示文摘With the increasing exploitation scope and intensity,the shallow resources would be exhausted in the future;and the deep mining will become an essential choice.In deep tunnel engineering,the heat-harm becomes one of the mainbariers.Investigations on high temperature coal mine have been done in Nothem China,with the construting of threemodels of high temperature mines suffering heat-harm,at the Jiahe mine,Sanhejian mine and Zhangshuanglou mine.Thedomestic and abroad cooling technologies of the mine respectively are also summarized after comparatively analyzing theadvantages and disadvantages of each technology.Finally,we find that the high temperature exchange machinery system(HEMS)technology that use mine discharge as the cold source,is excellent to heat-ham control in deep mines.Taking theJiahe coal mine as an example,we systematically introduce this teclnology by disposing three main workstations.HEMStechnology with its operations and functions in different exploitation levels are accomplished,including the extraction ofrefrigerating output,the transportation of chilled water by closed circulation line,the decompression of circulation linesand equipment by pressure transformation machine,and the heat exchange and cooling of workplace by heat exchangebetween wind stream and the chilled water.The exchanged heat source from the workplace is taken to ground heating bythe circulating water which acts as a carrier.It shows that the HEMS-technology benefit in environment protection andemission reduction.Results of this project illustrate that it is efficient in heat-ham control with the temperature decrease ofthe workplace down to 26-29℃,and being 4-6℃ lower than the original,and the relative humidity 5%-15%lowerthan before.It greatly improves the working environment of underground workplace suffering heat-ham of high tem-perature and high humidity.In addition,by the extracting of deep geothermal enery,ground fired boiler for heating hasbeen replaced,reducing environmental pollution.This technology is worth generalization in deep mines and related fields. | Pingye Guo Guolong Zhu Manchao He | 2014 | International Journal of Coal Science & Technology2014，1，3： | 7 |
| 3 | Research and application of methods for effectiveness evaluation of mine cooling system显示文摘Regarding the complexity and inconsistency of results in existing evaluation methods of mine cooling system, this paper clarifies the advantages, disadvantages and application of various mine cooling systems through principle analysis, and divides all the cooling systems into air-cooling, ice-cooling and water-cooling according to the transportation of cold energy. On this basis, the paper proposes a simple and efficient evaluation method for mine cooling system. The first index of this method is the air temperature at point C which is 15 m away from the return wind corner at working face. A cooling system will be judged ineligible if the air temperature at point C is above 30 °C during operation, because in this case, the combustible gases in coal will sharply overflow, inducing gas incidents. Based on the preliminary judgment of the first index, another two evaluation indexes are proposed based on the cooling ability and dehumidification of an airflow volume of 1000 m3/min at point C to evaluate the investment and operation cost of mine cooling system. This evaluation method has already been successfully applied in the cooling system design of Zhangshuanglou coal mine. | Guo Pingye Wang Yanwei Duan Mengmeng Pang Dongyang Li Nan | 2015 | International Journal of Mining Science and Technology2015，25，4： | 7 |
| 4 | EFFECT OF PEROXISOME PROLIFERATOR-ACTIVATED RECEPTOR ACTIVATORS ON TUMOR NECROSIS FACTOR-αEXPRESSION IN NEONATAL RAT CARDIAC MYOCYTES显示文摘Objective To investigate the effect of peroxisome proliferator-activated receptor-α(PPARα) and PPARγactivators on tumor necrosis factor-α(TNFα) expression in neonatal rat cardiac myocytes. Methods Primary cultures of cardiac myocytes from 1- to 3-day-old Wistar rats were prepared, and myocytes were ex-posed to lipopolysaccharide (LPS) and varying concentrations of PPARαor PPARγactivator (fenofibrate or pioglitazone).RT-PCR and ELISA were used to measure TNFα, PPARα, and PPARγexpression in cultured cardiac myocytes. Transient tr-ansfection of TNFαpromoter with or without nuclear factor-kappaB (NF-κB) binding site to cardiac myocytes was performed. Results Pretreatment of cardiac myocytes with fenofibrate or pioglitazone inhibited LPS-induced TNFαmRNA and protein expression in a dose-dependent manner. However, no significant changes were observed on PPARαor PPARγmRNA expression when cardiac myocytes were pretreated with fenofibrate or pioglitazone. Proportional suppression of TNFαpromoter activity was observed when myocytes was transiently transfected with whole length of TNFαpromoter (-721/+17) after being stimulated with LPS and fenofibrate or pioglitazone, whereas no change of promoter activity was observed with transfection of TNFαreporter construct in deletion of NF-κB binding site (-182/+17). Conclusions PPARαand PPARγactivators may inhibit cardiac TNFαexpression but not accompanied by change of PPARαor PPARγmRNA expression. Therefore PPARαand PPARγactivators appear to play a role in anti-inflammation. The mechanism may partly be involved in suppression of the NF-κB pathway. | PingYe HongFang XinZhou Yan-liHe Yong-xueLiu | 2004 | Chinese Medical Sciences Journal2004，19，4： | 7 |
| 5 | Effect of cyclic wetting-drying on tensile mechanical behavior and microstructure of clay-bearing sandstone显示文摘The understanding of the weakening mechanism of tensile strength of rock subjected to cyclic wetting-drying is critical for rock engineering.Tensile strength tests were conducted on a total of 35 sandstone specimens with different wetting-drying cycles.The crack propagation process and acoustic emission characteristics of the tested samples were obtained through a high-speed camera and acoustic emission system.The results indicate that the tensile strength is observably reduced after cyclic wetting-drying,and the extent of the reduction is not only related to the number of wettingdrying cycle,but also closely related to the clay mineral content of the sample.In addition,as the cycles of wetting-drying increase,the effect of each single cycle on tensile strength get reduced until it becomes constant.Moreover,the crack initiation and penetration time is prolonged as the number of wetting-drying cycle increases,which indicates that cyclic wetting-drying weakens the rock stiffness and enhances the ductility of sandstone.Meanwhile,the acoustic emission characteristics of the tested samples further confirmed the ductile behaviour of the sandstone samples with increasing wetting-drying cycle.Furthermore,through the analysis of the microstructure and mineral composition of the samples with different wetting-drying cycles,it is concluded that the main weakening mechanisms of sandstones containing clay minerals are frictional reduction,chemical and corrosive deterioration. | Pingye Guo Juan Gu Yi Su Jiong Wang Zhanwen Ding | 2021 | International Journal of Coal Science & Technology2021，8，5： | 4 |
| 6 | Phase coexistence and evolution in sol-gel derived BY-PT-PZ ceramics with significantly enhanced piezoelectricity and high temperature stability显示文摘In this study,high Curie Temperature(T_(c))perovskite ceramics of optimized composition 0.55(0.1BiYbO_(3)-0.9PbTiO_(3))-0.45PbZrO_(3) with unique double orthorhombic main phases were prepared by a modified solgel method.Compared to the usual solid-state prepared sample,the sol-gel derived sample has a 1.6 times higher d_(33) of 325 pC/N,a 2.4 times higher remnant polarization,and a much better high temperature stability with similar depolarization temperature(T_(d))and T_(c).Comprehensive analysis of the xerogel prepared over a wide calcination temperature(T_(cal))range of 300-1000℃ revealed that perovskite structure appeared at only 400℃ and it became the main phase above 500℃.Comparison of XRD refinement results showed that calcination and sintering induced subtle and continuous phase transition,namely,the 400-900℃ calcined powders with coexisted tetragonal(P4mm)and orthorhombic(Pbam)phase changed to a rather stable double orthorhombic(Pmmm and Pbam)main phase in all the differently sintered ceramics,as similar to the 1000C calcined powders.The stable phase coexistence well explains the enhanced performance.The results also demonstrate that optimized sol-gel processing can provide high T_(c) ceramics with desirable multi-phase structure and significantly enhanced performance at a lower temperature. | Kai Cai Xue Yan Pingye Deng Li Jin Yang Bai Fei Zeng Dong Guo | 2019 | Journal of Materiomics2019，5，3： | 4 |
| 7 | Wellhead anti-frost technology using deep mine geothermal energy显示文摘The auxiliary shaft is an important location for coal mine heating in the winter,where the main purpose of heating is to prevent icing of the shaft.Wellhead heating requires characteristics of openness,no-noise and big heat loads.The original coal-fired boiler heating mode causes significant waste of energy and environmental pollution due to the low efficiency of the heat exchange.Therefore,to solve these problems,we will use deep mine geothermal energy to heat the wellhead by making full use of its negative pressure field and design a low-temperature water and fan-free heating system.Through numerical calculations we will simulate temperature fields,pressure fields and velocity fields under different air supply temperatures,as well as different air supply outlet locations and varying number of radiators in the wellhead room of a new auxiliary shaft to and the proper layout and number of radiators that meet wellhead anti-frost requirements from our simulation results,in order to provide guidelines for a practical engineering design.Tests on the Zhangshuanglou auxiliary shaft wellhead shows good,look promising and appear to resolve successfully the problem of high energy consumption and high pollution of wellhead heating by a coal-fired boiler. | Guo Pingye He Manchao Yang Qin Chen Chen | 2011 | Mining Science and Technology2011，21，4： | 1 |
| 8 | RepresentationTypeofEndomorphismAlgebrasofExceptionalSequenceofTypeAn 显示文摘 | YAO Hai-lou PINGY | 1998 | ActaMathSincia1998，141，1： | 1 |
| 9 | ASP-driven-e-service platform for web-based online manufacturing显示文摘 | Jiang Pingye Zhou Guanghui Liu Yong | 2002 | Intetrated Manufacturing Systems2002，15，19： | 1 |
| 10 | Vascularendothelialgrowthfactorreceptor2(VEGFR2)playsakeyroleinvasculogenicmimicryformation,neovascularizationandtumorinitiationbyGliomastemlikecells显示文摘 | YaoX PingY LiuY etal | 2013 | PLoSOne2013，8，57： | 1 |
| 11 | Evaluating the doping effect of Fe, Ti and Sn on gas sensing property of ZnO显示文摘 | Ning Han Linyu Chai Qi Wang Yajun Tian Pingye Deng Yunfa Chen | 2010 | Sensors & Actuators: B. Chemical2010，，2： | 1 |
| 12 | Structure tailorable triple-phase and pure double-polar-phase flexible IF-WS_(2)@poly(vinylidene fluoride)nanocomposites with enhanced electrical and mechanical properties显示文摘A new low-cost high-permittivity flexible nanocomposite consisting of a polyvinylidene fluoride(PVDF)matrix and fullerene-like tungsten disulfide nanoparticle(IF-WS2 NP)filler was fabricated via a simple solution route.A comprehensive investigation by X-ray diffraction,attenuated total reflection-infrared spectroscopy,and differential scanning calorimetry(DSC)showed that 0.5e1 vol% of IF-WS_(2) induced a nonpolar α-phase to coexisting triple-phase transition in PVDF,whereas a slightly higher loading of 2 vol% induced pure double-polar β- and γ-phases.These results indicate that the structure and properties of the fabricated nanocomposite are easily tailorable.DSC during heating and cooling cycles and morphology observations further indicated that a polar phase was induced by the nucleation effect of the IF-WS2 NPs and electrostatic interactions.As a consequence of the multiphase coexistence and structure homogeneity,nanocomposites with approximately 0.5-1 vol% of IF-WS_(2) NPs showed enhanced dielectric and energy-storage performance as well as enhanced tensile strength and elongation.The new phase-tailorable nanocomposites with balanced properties are promising for applications as energystorage capacitors,piezoelectric sensors,and other flexible multifunctional components.The results of this study will serve to deepen the understanding of the polymer polymorph and provide directions on new routes for fabrication of smart materials. | Dong Guo Kai Cai Pingye Deng Guoning Si Liangying Sun Fahui Chen Honglong Ning Li Jin Jingtao Ma | 2020 | Journal of Materiomics2020，6，3： | 0 |
| 13 | Impact of cooling rate on mechanical properties and failure mechanism of sandstone under thermal-mechanical coupling effect显示文摘High geo-temperature is one of the inevitable geological disasters in deep engineering such as resource extraction,space development,and energy utilization.One of the key issues is to understand the mechanical properties and failure mechanism of high-temperature rock disturbed by low-temperature airflow after excavation.Therefore,.the experimental and numerical investigation were carried out to study the impact of cooling rate on mechanical properties and failure mechanism of high temperature sandstone.First,uniaxial compression experiments of high temperature sandstone at different real-time cooling rates were carried out to study the mechanical properties and failure modes.The experimental results indicate that the cooling rate has a significant effect on the mechanical properties and failure modes of sandstone.The peak strain,peak stress,and elastic modulus decrease with an increase in cooling rate,and the fragmentation degree after failure increases gradually.Moreover,the equivalent numerical model of heterogeneous sandstone was established using particle flow code(PFC)to reveal the failure mechanism.The results indicate that the sandstone is dominated by intragrain failure in the cooling stage,the number of microcracks is exponentially related to the cooling rate,and the higher the cooling rate,the more cracks are concentrated in the exterior region.Under axial loading,the tensile stress is mostly distributed along the radial direction,and the damage in the cooling stage is mostly due to the fracture of the radial bond.In addition,axial loading,temperature gradient and thermal stress mismatch between adjacent minerals are the main reasons for the damage of sandstone in the cooling stage.Moreover,the excessive temperature gradient in the exterior region of the sandstone is the main reason for the damage concentration in this region. | Pingye Guo Peng Zhang Mohua Bu Hang Xing Manchao He | 2023 | International Journal of Coal Science & Technology2023，10，2： | 0 |
| 14 | Molecular Simulation of Critical Parameters of Nano-Confined n-Alkanes显示文摘TraPPE force field combined with grand-canonical transition-matrix Monte Carlo simulation were used to investigate the vapor-liquid coexistence curve and critical properties of methane,ethane,propane,and n-butane in slit pores ranging from 6?to 40?.Long range correction for intermolecular potential in slit pore model was developed,and the fact indicating that its influence on various thermodynamic properties is not negligible was found.The simulation results show that the thermodynamic properties of nano-confined alkanes shift tremendously from the bulk state.The critical temperature under confinement experiences a roughly linear decrease with an inverse in the slit width,while the critical pressure and the critical density have a relative increment related with carbon number on both the large slit width region and the small slit width region.Further analysis on z-density profiles of alkanes revealed that the complex behaviors of shift in critical parameters are the results of interplay between fluid-fluid and fluid-wall interaction. | Zhang Pingye Yang Changchun Wang Shu | 2020 | China Petroleum Processing & Petrochemical Technology2020，22，1： | 0 |
| 15 | Evaluation method of underground water storage space and thermal reservoir model in abandoned mine显示文摘A large number of mines are closed or abandoned every year in China.Geothermal utilization is one of the important ways to efficiently reuse underground resources in abandoned mines.How to calculate the volume and distribution of underground water storage space is the key to accurately evaluate the sustainable geothermal production in abandoned mines.In this paper,according to the multi-scale characteristics of the underground space in abandoned mine,the flow and heat transfer equations in the multi-scale space are sorted out systematically,and the calculation methods of different secondary space volumes are derived in detail.Taking Jiahe abandoned mine as the background,the volume and distribution of underground secondary space are calculated,and three heat storage evaluation models considering different water storage spaces are established by using COMSOL.The simulation results show that there are great differences among different models,and the results of the equivalent porous media model considering the multi-scale space are most consistent with the reality.Sensitivity analyses of key parameters model results indicated that the heat production is closely related to not only the recharge flow rate but also the recharge temperature and operating time.Furthermore,the energy saving and emission reduction benefits of geothermal utilization in abandoned mines are calculated,the results show that geothermal utilization of abandoned mines can effectively reduce energy consumption and CO_(2)emissions,and it has great economic benefits. | Pingye Guo Meng Wang Guanjie Dang Tianci Zhu Jie Wang Manchao He | 2023 | Rock Mechanics Bulletin2023，2，2： | 0 |
| 16 | Field experiment on coalmine heat disaster governance using cold source from surface water显示文摘Regarding the lack of cold source for underground cooling systems from either mine inflow or return air,field experiments were taken in a high temperature deep coal mine with abundant cold source from surface water. Taking Sanhejian coal mine as an example, this paper introduced the technology scheme of heat disaster governance using surface water cold source. The paper presents the basics of this field experiment at the beginning, following by the design and site layout of the cooling system including the analysis and calculation of cold source. Numerical calculation method is also applied based on the operation parameters to simulate the influence to the surface river ecosystem. The results suggest that the temperature of surface water shall be lower than 34 °C after heat exchange, and when more cooling capacities are needed in the future, increasing the water flow is more favorable than increasing the cooling range of water, which is better for the ecological environment protection. | Guo Pingye Zhu Guolong Liu Yuqing Duan Mengmeng Wu Junyin | 2014 | International Journal of Mining Science and Technology2014，24，6： | 0 |
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