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1.
煤矿瓦斯爆炸的条件与预防措施   总被引:1,自引:0,他引:1  
煤矿瓦斯爆炸是煤矿安全生产事故中最为严重的一种。分析了煤矿瓦斯爆炸的条件,提出了防止瓦斯爆炸的有效措施,从而控制煤矿瓦斯事故的发生,保证煤矿生产的安全运行。  相似文献   

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<正> 预防和控制瓦斯爆炸事故已成为广大职工的迫切愿望,也是当前煤矿——特别是乡镇煤矿安全生产的重大课题。如何杜绝瓦斯爆炸事故,除防止瓦斯超限外,消灭引爆火源是预防瓦斯爆炸的  相似文献   

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从瓦斯爆炸的基本条件入手,分析了瓦斯爆炸事故发生的主要原因,得出煤矿瓦斯爆炸事故是瓦斯积聚和引爆火源、自然条件、安全技术手段、安全装备水平、安全意识和管理水平等多种因素共同作用的结果。在此基础上从控制瓦斯浓度、杜绝火源及制定合理的事故应急预案等方面提出防止瓦斯爆炸事故的基本措施。  相似文献   

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通过分析煤矿瓦斯爆炸的三要素,阐述了防止瓦斯事故发生的预防措施,为预防瓦斯爆炸事故和减少瓦斯爆炸危害提供参考.  相似文献   

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对2010—2019年我国低瓦斯煤矿发生的瓦斯爆炸事故进行统计,从所有制、事故发生地、事故原因、煤矿产能、发生时间、事故诱因、事故类型等几个维度,分析了低瓦斯煤矿瓦斯爆炸事故发生的规律,发现年产量30万t以下的煤矿容易发生瓦斯爆炸事故,通风是事故发生的主要诱因,低瓦斯煤矿相对更容易发生重大事故。为防止低瓦斯煤矿瓦斯事故发生,必须提高重视程度,从技术和管理上清除危险源。  相似文献   

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于不凡 《煤矿安全》1990,(12):16-28
<正> 第一部份 瓦斯爆炸的条件及影响因素一、瓦斯的成分及爆炸性瓦斯爆炸历来都是煤矿的主要灾害之一,造成成千上万人的死亡,我国1970~1980年期间,发生重大瓦斯爆炸事故百余起,死亡数千人,为了防止瓦斯爆炸事故,必须很好地了解瓦斯爆炸的发生、发展规律。  相似文献   

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总结了中国煤矿瓦斯爆炸事故发生原因,分析了煤矿瓦斯爆炸事故致害因素。指出瓦斯爆炸事故中,导致人员大量伤亡的主要原因是CO等毒害气体的中毒和窒息,瓦斯爆炸毒害气体传播规律研究对瓦斯爆炸事故预防和防止瓦斯爆炸事故范围扩大意义重大。瓦斯爆炸是一个非常复杂的瞬间化学反应过程。根据矿井通风网络的具体情况,在高斯模型的基础上,提出了适合矿井瓦斯爆炸毒气传播规律的数值计算模型。  相似文献   

8.
煤矿瓦斯特征与风险评价   总被引:2,自引:0,他引:2  
该文根据事故致因理论,结合煤矿瓦斯爆炸的特征,对煤矿瓦斯的辨识作了一定的研究探讨,给出了瓦斯爆炸风险性的半定量评价模型和瓦斯爆炸事故危险度的计算方法。所建立的模型可以量化矿井瓦斯爆炸可能性,为防止瓦斯爆炸提供量化指标。  相似文献   

9.
李文慧 《煤矿安全》2006,37(7):75-77
通过对江源县各煤矿发生的3起瓦斯爆炸事故分析,受巷柱式采煤方法的限制,采掘工作面是瓦斯爆炸事故的多发地点。因此,加强采掘工作面的通风管理和重点预防采掘工作面的瓦斯,对防止煤矿瓦斯爆炸事故具有重大的意义。  相似文献   

10.
为了详细分析霍尔辛赫煤矿瓦斯爆炸存在的危险性,基于瓦斯爆炸理论和事故致因理论,建立了霍尔辛赫煤矿瓦斯爆炸事故树模型,进行定性与定量分析,求出最小割集、最小径集及结构重要度,得出了导致瓦斯爆炸的原因,为防止煤矿瓦斯爆炸提供一定借鉴,对指导煤矿安全生产具有重要意义。  相似文献   

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New, more exact approximated solution to the direct problem of identifying a signal of a vertically oriented magnetic dipole on a borehole axis is reported. This solution makes possible to process the data of the high-frequency induction logging isoparametric sounding, including negative values of the measured phase difference. The new approximation enables taking into account the variable borehole radius that is of special importance when a highly-conductive drilling mud is used. As the obtained expression is explicit, it can be used for the quick data processing and for solving inverse problems of the borehole geophysics. __________ Translated from Fiziko-Tekhnicheskie Problemy Razrabotki Poleznykh Iskopaemykh, No. 4, pp. 3–9, July–August, 2006.  相似文献   

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Conclusions The deformation of the blocky mass around a working can be interpreted as displacement of the material in a convergent radial channel with an aperture angle of 360°. A kinematic scheme permitting the formulation of the problem in statically determined form (similar to the classical scheme for calculation of the pressure of the earth at a supporting wall) is constructed. Axisymmetric solutions for different levels of block interaction on contact are given. Estimates of the carrying capacity are obtained in the case of rigid-plastic contact between the block and in conditions of dry friction. It is shown that this scheme admits of transition in the limit to the accurate solution of the Lame problem in the continuum formulation. Cases in which increase in the relative slip between the blocks leads to decrease in the interaction force between them (weakening) are considered. With slight weakening, the deformation is a stable process. If the weakening is greater than a critical level, the solution becomes unstable, which indicates the uncontrollable release of stored elastic energy from the mass. Institute of Mining, Siberian Branch, Academy of Sciences of the USSR, Novosibirsk. Translated from Fiziko-Tekhnicheskie Problemy Razrabotki Poleznykh Iskopaemykh, No. 6, pp. 7–15, November–December, 1990.  相似文献   

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Institute of Mining, Siberian Branch, Academy of Sciences of the USSR, Novosibirsk. Translated from Fiziko-Tekhnicheskie Problemy Razrabotki Poleznykh Iskopaemykh, No. 4, pp. 77–85, July–August, 1991.  相似文献   

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1.  A working and a rock mass around it may be defined by one dimensionless parameter λ≥0. This parameter predetermines the behavior of the rock mass with any changes of mine pressure and support resistance.
2.  With 0≤λ<1 prediction of the behavior is clear: Reaction of the rock mass to any changes in mine pressure and support resistance will have a stable character.
3.  If λ>1 then stability for the reaction is only retained up to a certain critical condition. Parameters of the critical condition depend on mine pressure, the degree of weakening at contacts between blocks, geometrical dimensions and elasticity moduli. With a changeover through the critical condition there is uncontrolled dynamic release of potential elastic energy for the rock mass.
Institute of Mining, Siberian Branch, Academy of Sciences of the USSR, Novosibirsk. Translated from Fiziko-Tekhnicheskie Problemy Razrabotki Poleznykh Iskopaemykh, No. 1, pp. 37–43, January–February, 1991.  相似文献   

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