基于瓦斯地质单元划分的突出精准防控实践

瓦斯地质单元是研究煤层瓦斯地质规律和防治煤与瓦斯突出的基础,为了使矿井防突措施更加有效,瓦斯抽采效率更高,基于甘肃靖远矿区魏家地煤矿井田瓦斯地质特征和煤层瓦斯参数,对井田进行了瓦斯地质单元划分,并对工作面进行了突出危险区域划分,建立了3个瓦斯等级.根据工作面不同的瓦斯等级和突出危险性有针对性地实施顺层钻孔、上隅角埋管、...     

岩浆侵蚀对煤层瓦斯赋存的影响的研究

以淮北矿区石台煤矿3煤层为工程背景,采用瓦斯地质单元划分的方法,以井田内主要断层和天然焦区为界．将主采煤层3煤层划分为3个独立的地质块段．分别对不同地质块段内地质因素对煤层瓦斯赋存规律进行研究。为研究地质条件对煤层瓦斯赋存的影响．本文分析了褶皱构造、断裂构造及岩浆侵蚀等对煤层瓦斯压力和瓦斯涌出量的影响。结果表明：岩浆岩侵入对石台煤矿3煤层煤与瓦斯突出的控制作用最为明显,地质构造对瓦斯保存和运移具有重要作用．地质块段的划分对地质构造复杂的高瓦斯及煤与瓦斯突出矿井具有重要意义。     

孟庄井田瓦斯赋存分区分带规律研究

研究地质构造是瓦斯防治的重点工作,在分析孟庄井田各种地质因素对瓦斯赋存控制的基础上,将井田划分为南、北低瓦斯带,中部高瓦斯带,而分区分带的主控地质因素为断裂构造、层滑构造和岩浆侵入。     

基于划分瓦斯地质单元的瓦斯赋存规律研究

运用瓦斯地质理论,结合地质勘探和矿井生产揭露的瓦斯地质资料,将十三矿井田划分为2个瓦斯地质单元。结合历史瓦斯资料和井下实测瓦斯数据,分析了十三矿二_1煤层瓦斯赋存规律及其影响因素。研究结果表明,影响十三矿二_1煤层瓦斯赋存的主要因素有:煤层埋深、地质构造、围岩条件等。因各种因素的共同作用,十三矿瓦斯含量自二_1煤层露头随着煤层埋深的增大而逐渐增高;同一埋深,矿井东部煤层瓦斯含量较西部大,而且瓦斯含量梯度也大。     

影响淮北矿区芦岭矿井田煤层瓦斯地质因素分析

通过对芦岭井田煤层瓦斯地质因素定性定量分析认为,区域地质构造是控制矿井煤层瓦斯的关键地质因素;各自然地质单元瓦斯赋存情况受其围岩力学性质、断层分布、煤层厚度等地质因素控制.埋藏深度对瓦斯赋存起主导控制作用,浅部大多以压出、倾出为主,进入一定深度后,多表现为突出.在瓦斯防治实践中,应根据不同地质单元、不同埋藏深度分别制定...     

瓦斯综合治理“一面一策”标准研究——西山煤电矿井回采工作面瓦斯分级治理标准

为得到回采工作面瓦斯治理的规范性、标准性方案,以西山煤电集团回采工作面的瓦斯抽采方案为例,根据瓦斯来源将回采工作面瓦斯抽采方法归纳为本煤层、裂隙带、下邻近层及采空区4类,将这4类抽采方法和工作面瓦斯绝对涌出量组成复合指标体系,采用系统聚类分析法,并借助SPSS数据处理软件对这些指标进行分析,根据聚类分析结果把回采工作面瓦斯治理划分为4个等级,并提出了不同等级工作面瓦斯治理的基本方法。该划分方法能提高制定瓦斯抽采方案的效率,对相似地质条件矿井的瓦斯治理工作具有指导意义。     

鹤壁矿区二1煤层瓦斯赋存规律及其控制因素

煤层瓦斯赋存规律研究是矿井瓦斯灾害防治的基础。论文介绍了鹤壁矿区的地质构造特征,研究了瓦斯地质单元划分的准则,并对鹤壁矿区进行了瓦斯地质单元划分,现场收集整理并测试了大量的瓦斯含量数据,分析了鹤壁矿区不同瓦斯地质单元的瓦斯赋存规律,并研究了瓦斯赋存的控制因素。研究表明：鹤壁矿区瓦斯赋存随埋藏深度逐渐增加,受地质构造的影响非常明显。     

断层带煤体瓦斯地质特征与瓦斯突出的关联

针对煤与瓦斯突出煤层开采期间的突出与断层之间的关联问题,采用瓦斯地质方法,通过矿井开采实例研究了井田内断层封闭与开放的瓦斯地质特征,并根据断层附近瓦斯涌出规律判断断层与突出的关系.研究结果表明:断层的开放性与封闭性对煤与瓦斯突出具有控制作用.封闭性断层带附近瓦斯涌出异常增大,构造应力集中、常常封闭有高能瓦斯以及发育的构造煤,为煤与瓦斯突出创造条件;开放性断层带附近具有煤层瓦斯压力相对较低,煤层瓦斯含量较正常下降的特征,而在远离断层面的一侧,伴随有平行断层的条带状煤层应力集中区,其中具有煤层瓦斯压力大、煤层瓦斯含量高的特征.该成果对煤矿在煤层断层带开采瓦斯防治具有一定的理论价值和实用意义.     

潘一东瓦斯地质工作初探

根据井田地质状况,探索高瓦斯矿井的瓦斯地质工作,从而为矿井安全生产提供行之有效的瓦斯地质工作保障。     

梁宝寺井田瓦斯涌出规律及其预测

根据矿井建设和生产过程中积累的大量的瓦斯地质资料,分析了瓦斯质量体积、煤层埋藏深度、围岩特性、地质构造等主要因素对梁宝寺井田瓦斯涌出的影响.总结的涌出规律为瓦斯涌出量随埋藏深度增大而增大,随顶板砂岩比增大而减小,在遇断层处涌出量明显增大.运用多元回归分析的方法对瓦斯涌出进行定量预测,结果表明,该方法预测梁宝寺井田瓦斯涌出的结果能够与实际地质情况较好的吻合.     

Markedness and its Interpretation in Language Use

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.     

Lower Paleozoic oil relationships within Williston Basin, Canada

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.     

An Analysis of Catherine＇s Character——Wuthering Heights

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.     

Features of Women's language

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.     

Characterization of Ordovician carbonate reservoirs, southeastern Saskatchewan, Canada

The discovery of the prolific Ordovician Red River reservoirs in 1995 in southeastern Saskatchewan was the catalyst for extensive exploration activity which resulted in the discovery of more than 15 new Red River pools. The best yields of Red River production to date have been from dolomite reservoirs. Understanding the processes of dolomitization is, therefore, crucial for the prediction of the connectivity, spatial distribution and heterogeneity of dolomite reservoirs.The Red River reservoirs in the Midale area consist of 3～4 thin dolomitized zones, with a total thickness of about 20 m, which occur at the top of the Yeoman Formation. Two types of replacement dolomite were recognized in the Red River reservoir: dolomitized burrow infills and dolomitized host matrix. The spatial distribution of dolomite suggests that burrowing organisms played an important role in facilitating the fluid flow in the backfilled sediments. This resulted in penecontemporaneous dolomitization of burrow infills by normal seawater. The dolomite in the host matrix is interpreted as having occurred at shallow burial by evaporitic seawater during precipitation of Lake Almar anhydrite that immediately overlies the Yeoman Formation. However, the low δ18O values of dolomited burrow infills (-5.9‰～ -7.8‰, PDB) and matrix dolomites (-6.6‰～ -8.1‰, avg. -7.4‰ PDB) compared to the estimated values for the late Ordovician marine dolomite could be attributed to modification and alteration of dolomite at higher temperatures during deeper burial, which could also be responsible for its 87Sr/86Sr ratios (0.7084～0.7088) that are higher than suggested for the late Ordovician seawaters (0.7078～0.7080). The trace amounts of saddle dolomite cement in the Red River carbonates are probably related to "cannibalization" of earlier replacement dolomite during the chemical compaction.     

Design and analysis of generic LBS application developing platform

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.     

橡胶颗粒沥青混合料低温抗裂性试验研究

以AC-13级配为基础,将橡胶颗粒代替部分集料掺入混合料中,以低温弯曲试验为评价方法对不同橡胶颗粒掺量下沥青混合料的低温抗裂性进行研究,并引入应变能密度值对混合料的低温抗裂性进行综合评价.试验结果表明:橡胶颗粒沥青混合料试件的破坏微应变均超过2 300,满足冬寒区的技术指标;无论是否掺加橡胶颗粒,随着温度的下降,沥青混合料破坏时的最大弯拉强度增大,弯拉应变降低,劲度模量增大;弯曲应变能密度在胶粒掺量为1%左右时具有较大的弯曲应变能密度值,此时橡胶颗粒沥青混合料具有较好的低温抗裂性.     

低渗透非均质砂岩油藏启动压力梯度研究

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。     

Quantitative trait loci （QTLs） for quality traits related to protein and starch in wheat

Quality traits in wheat （Triticum aestirum L.） were studied by quantitative trait locus （QTL） analysis in a recombinant inbred line （RIL） population, a set of 131 lines derived from Chuan 35050 × Shannong 483 cross （ChSh）. Grains from RILs were assayed for 21 quality traits related to protein and starch. A total of 35 putative QTLs for 19 traits with a single QTL explaining 7.99-40.52% of phenotypic variations were detected on 10 chromosomes, 1D, 2A, 2D, 3B, 3D, 5A, 6A, 6B, 6D, and 7B. The additive effects of 30 QTLs were positive, contributed by Chuan 35050, the remaining 5 QTLs were negative with the additive effect contributed by Shannong 483. For protein traits, 15 QTLs were obtained and most of them were located on chromosomes 1 D, 3B and 6D, while 20 QTLs for starch traits were detected and most of them were located on chromosomes 3D, 6B and 7B. Only 7 QTLs for protein and starch traits were co-located in three regions on chromosomes 1D, 2A and 2D. These protein and starch trait QTLs showed a distinct distribution pattern in certain regions and chromosomes. Twenty-two QTLs were clustered in 6 regions of 5 chromosomes. Two QTL clusters for protein traits were located on chromosomes 1D and 3B, respectively, three clusters for starch traits on chromosomes 3D, 6B and 7B, and one cluster including protein and starch traits on chromosome 1D.     

On Tragic Consciousness In The Works By Ernest Hemingway

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.