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1.
目前,国内外的煤田灭火技术存在一定的不足。本文通过对CaO的性质及其在煤田灭火中的应用可行性探讨,阐述了CaO的应用在煤田灭火中的重要性及必要性。  相似文献   

2.
本文以地质雷达在新疆煤田火区探测为实例,说明地质雷达技术在煤田灭火工程探测中的应用情况,总结优缺点,推动煤田灭火工程探测技术的发展。  相似文献   

3.
开展煤田火区现状调查,研究其对区域气候变化、生态响应系统的影响是评估自然灾害研究中的重要方面。选择新疆部分煤田火区进行了实地考察,开展了小尺度区域热辐射信息分析,依据现场实测资料分析,给出煤田热隐患状态的适度评定。分析结果表明:小尺度区域热辐射测量方法可用于判别已灭煤田火区的灭火效果分析及新形成火区探测;对于正在燃烧的煤田火区可判断火区的范围并为灭火提供参考依据。  相似文献   

4.
生态修复技术在新疆煤田火灾治理中应用的探讨   总被引:1,自引:0,他引:1  
新疆对煤田火灾的治理主要以灭火为主。由于对生态修复技术了解和应用得较少,火灾治理后,黄土覆盖层常常受到雨水的冲刷,从而降低了灭火效果。将生态修复技术与煤田火区治理结合起来,不仅能够提高煤田灭火质量、降低灭火成本,还能够迅速恢复火区及周边的生态环境。  相似文献   

5.
主要简送远红外威像仪的基本原理及工作方法在煤田灭火中的应用效果。  相似文献   

6.
本文主要简述瞬变电磁场法的基本原理及工作方法在煤田灭火中的应用效果。  相似文献   

7.
新疆的煤田火灾十分严重,在多年的治理过程中,注浆一直采取传统的泥浆进行灌注封闭。根据目前的煤田火灾情况,在治理时有些火灾中的裂隙用泥浆难以封闭。因此,引用了灭火新材料、新工艺:矿用固化泡沫泥浆。本文主要讲述矿用固化泡沫泥浆在煤田火区中的应用和取得的效果。  相似文献   

8.
在GIS技术支持下,建立新疆煤田灭火空间信息系统,为新疆煤田灭火提供集成的数据环境和可视化的分析平台,为灭火工程提供煤层自燃信息、燃烧面积、燃烧特征、灾害损失等信息,实现煤田灭火决策管理施工监测实施的一体化和可视化。系统的建立为灭火工程的顺利实施提供信息支持,有效提高项目管理水平。  相似文献   

9.
本文介绍了新疆玛纳斯塔西河煤田火区灭火用水量的计算,阐述了玛纳斯塔西河火区灭火工程供水系统选型设计。  相似文献   

10.
主要从矿用固化泡沫水泥浆和黄土注浆的注浆工艺、所用注浆材料等方面分析对比了矿用固化泡沫水泥浆与传统的常压黄土注浆工艺在煤田灭火施工中的优缺点,及两种方法对灭火质量的影响,并提出改进注浆效果的一些建议。  相似文献   

11.
Language markedness is a common phenomenon in languages, and is reflected from hearing, vision and sense, i.e. the variation in the three aspects such as phonology, morphology and semantics. This paper focuses on the interpretation of markedness in language use following the three perspectives, i.e. pragmatic interpretation, psychological interpretation and cognitive interpretation, with an aim to define the function of markedness.  相似文献   

12.
何延凌 《科技信息》2008,(4):258-258
Language is a means of verbal communication. People use language to communicate with each other. In the society, no two speakers are exactly alike in the way of speaking. Some differences are due to age, gender, statue and personality. Above all, gender is one of the obvious reasons. The writer of this paper tries to describe the features of women's language from these perspectives: pronunciation, intonation, diction, subjects, grammar and discourse. From the discussion of the features of women's language, more attention should be paid to language use in social context. What's more, the linguistic phenomena in a speaking community can be understood more thoroughly.  相似文献   

13.
王慧 《科技信息》2008,(10):240-240
Wuthering Heights, Emily Bronte's only novel, was published in December of 1847 under the pseudonym Ellis Bell. The book did not gain immediate success, but it is now thought one of the finest novels in the English language. Catherine is the key character of this masterpiece, because everybody and everything center on her though she had a short life. We can understand this masterpiece better if we know Catherine well.  相似文献   

14.
The Williston Basin is a significant petroleum province, containing oil production zones that include the Middle Cambrian to Lower Ordovician, Upper Ordovician, Middle Devonian, Upper Devonian and Mississippian and within the Jurassic and Cretaceous. The oils of the Williston Basin exhibit a wide range of geochemical characteristics defined as "oil families", although the geochemical signature of the Cambrian Deadwood Formation and Lower Ordovician Winnipeg reservoired oils does not match any "oil family". Despite their close stratigraphic proximity, it is evident that the oils of the Lower Palaeozoic within the Williston Basin are distinct. This suggests the presence of a new "oil family" within the Williston Basin. Diagnostic geochemical signatures occur in the gasoline range chromatograms, within saturate fraction gas chromatograms and biomarker fingerprints. However, some of the established criteria and cross-plots that are currently used to segregate oils into distinct genetic families within the basin do not always meet with success, particularly when applied to the Lower Palaeozoic oils of the Deadwood and Winnipeg Formation.  相似文献   

15.
理论推导与室内实验相结合,建立了低渗透非均质砂岩油藏启动压力梯度确定方法。首先借助油藏流场与电场相似的原理,推导了非均质砂岩油藏启动压力梯度计算公式。其次基于稳定流实验方法,建立了非均质砂岩油藏启动压力梯度测试方法。结果表明:低渗透非均质砂岩油藏的启动压力梯度确定遵循两个等效原则。平面非均质油藏的启动压力梯度等于各级渗透率段的启动压力梯度关于长度的加权平均;纵向非均质油藏的启动压力梯度等于各渗透率层的启动压力梯度关于渗透率与渗流面积乘积的加权平均。研究成果可用于有效指导低渗透非均质砂岩油藏的合理井距确定,促进该类油藏的高效开发。  相似文献   

16.
As an American modern novelist who were famous in the literary world, Hemingway was not a person who always followed the trend but a sharp observer. At the same time, he was a tragedy maestro, he paid great attention on existence, fate and end-result. The dramatis personae's tragedy of his works was an extreme limit by all means tragedy on the meaning of fearless challenge that failed. The beauty of tragedy was not produced on the destruction of life, but now this kind of value was in the impact activity. They performed for the reader about the tragedy on challenging for the limit and the death.  相似文献   

17.
Location based services is promising due to its novel working style and contents.A software platform is proposed to provide application programs of typical location based services and support new applications developing efficiently. The analysis shows that this scheme is easy implemented, low cost and adapt to all kinds of mobile nework system.  相似文献   

18.
正The periodicity of the elements and the non-reactivity of the inner-shell electrons are two related principles of chemistry,rooted in the atomic shell structure.Within compounds,Group I elements,for example,invariably assume the+1 oxidation state,and their chemical properties differ completely from those of the p-block elements.These general rules govern our understanding of chemical structures and reactions.Using first principles calcula-  相似文献   

19.
We have developed an adiabatic connection to formulate the ground-state exchange-correlation energy in terms of pairing matrix linear fluctuations.This formulation of the exchange-correlation energy opens a new channel for density functional approximations based on the many-body perturbation theory.We illustrate the potential of such approaches with an approximation based on the particle-particle Random Phase Approximation(pp-RPA).This re-  相似文献   

20.
正The electronic and nuclear(structural/vibrational)response of 1D-3D nanoscale systems to electric fields gives rise to a host of optical,mechanical,spectral,etc.properties that are of high theoretical and applied interest.Due to the computational difficulty of treating such large systems it is convenient to model them as infinite and periodic(at least,in first approximation).The fundamental theoretical/computational problem in doing so is that  相似文献   

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