weak coal 中文意思是什麼
weak coal
解釋
脆煤-
On the basis of the concept and analysis method of slope geological structure, four typical slope geological structures are selected by some investigations on more than one hundred high rock slopes in the motorway project. these structures are thick sandstone stratum, stratum including weak coal, stratum made of red or brown plastic clay and soft rock mass and stratum made of remnants rock mass. the practical slope geological structures are compact basis of geological mechanical model for the analysis of relaxation zone in high rock slope projects
在介紹了坡體結構概念並提出建立坡體結構方法的基礎上，根據對京珠高速公路粵境北段路塹高邊坡工程中百余處巖石高邊坡的調查總結，選擇了其中較為具有代表意義的厚層砂巖、煤系地層、紅土地層及殘坡積層路塹高邊坡共4類巖石高邊坡作為研究對象，為對巖石高邊坡開挖鬆弛區的分析打下了堅實的實際地質力學模型基礎。 -
Dimension design of coal pillar with weak plane in strip mining
條帶開采中含弱面的煤柱尺寸設計 -
For the tectonic coal ， the properties of higher porosity and lower permeability make it capable of keeping higher gas pressure ； both of the “ isolating action ” and “ gas - cushion action ” cut down the resistance against outburst ； the specifity of high - defomed - extent makes desorption ， escape and flowing quickly become possible ； the existing of weak - seam or “ thoroughfare - seam ” create suitable conditions for the initial erupting and continued developing of coal and gas outburst. on the whole ， it is the synhesis action of all factors ， which leads to outbursts. the existing of tectonic coal with certain thickess is the essential condition of coal and gas outbursts ， but not the sufficient condition
高空隙率、低透氣性使構造煤能夠保持較高的瓦斯壓力；破碎性、 「隔離」作用及「氣墊」作用，使構造煤抵禦外力作用的能力大大降低；構造煤變形幅度大的特性，為瓦斯的迅速解吸、放散和快速流動創造了條件；構造煤薄弱分層或「通道層」的存在，則為煤與瓦斯突出的初始激發和持續發展奠定了基礎；上述因素的共同作用，影響和制約了煤與瓦斯突出的強度和分佈.盡管如此，一定厚度的構造煤的存在只是發生煤與瓦斯突出的必要條件和有利條件，而非充分條件 -
The results indicate that there is a strong to weak, then weak to strong evolution process for the total grassland desertification, middle desertification and slight desertification, which can be attributed to climate change and human activities, especially to the influence of climate change ; due to coal exploitation, the severe desertification is always distributing in " ? " around the mining land, and developing to the east quickly with the help of monsoon
結果表明：受氣候變化、超載放牧、掏挖藥材以及墾荒等因素的影響，輕度荒漠化、中度荒漠化以及荒漠化總面積存在由強轉弱、再由弱變強的演變過程：受煤炭開發的影響，重度荒漠化草地多圍繞礦業建設用地呈「 ? 」狀分佈，並且受季風影響向礦業建設用地東側發展迅速。 -
Weak supervision of work safety is an important cause to the severe situation of chinese coal mine safety, it must be solved by taking some countermeasures
摘要對安全生產監督脆弱是造成我國企業安全生產狀況十分嚴峻的重要原因，必須採取相應的措施予以解決。 -
Comparison of synthetic behavior of horizontal type conc - weak conditioning coal - burner with vertical type
水平濃淡和豎直濃淡燃燒器的綜合性能比較 -
Application of construction technology for soft and weak surrounding rock in construction of suqiao coal mine
軟弱圍巖施工技術在蘇橋煤礦基建工程中的應用 -
Ordinary, the ice layer is the frozen coal structure weak link, when the external force achieved ice layer ’ s intensity, the frozen coal cracks
通常凍煤冰層內部作用力是凍煤結構中的薄弱環節，當外力達到冰層的強度時凍煤即崩裂。 -
Based on the analysis of failure features, deformation shapes, the failure mechanism of weak - rock roadway is studied systematically. optimal supporting time model of bolt - grouting support is given with different methods when analyzing the bolt - grouting supporting mechanism at large. in order to study bolt - grouting supporting mechanism systematically with simulation method in heavily stressed weak - rock coal and rock roadway of huaibei mine, fem models under different conditions are found by using fem program - ansys. finally, construction technics, grouting parameters, and so forth, are studied and applied in the coal and rock roadway of taoyuan and qinan mines
在對深部高應力軟巖巷道變形破壞特徵、變形破壞形態分析的基礎上，對巷道變形破壞機制進行了較為系統地研究；接著在對錨注支護機理進行了詳盡分析的同時，提出了最佳錨注支護時間（段）的概念，並建立了最佳錨注支護時間模型；以淮北礦區深部高應力軟巖煤、巖巷道為背景，採用大型有限元軟體ansys ，分別建立了不同條件下的數值計算模型對錨注支護進行了較為全面系統的數值模擬研究，得出了一系列有價值的結論。 -
Brief talk about the extension to weak glued coal exploitation in the coking technique
淺談在焦化技術中擴大弱粘煤利用
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