Based on the effect of the sanding on the bradenhead, the ground flow pipeline gtv and surface equipment in high pressure and high gas rate well in west Sichuan, and combination with actual engineering geologic characteristic and operation status, the paper analyzed the influencing factor of sanding in the fractured well, and put forward the countermeasures to effectively prevent sanding.

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The mesoscale cyclonical feature in the surface stream near the coastal areas is not apparent while the typhoon approaching the main land. The surface southeast current of typhoon is divided into an east current and a southeast current, making for confluence of local currents and convection.

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They still possessed the earth on sufferance: since the Morlocks, subterranean for innumerable generations, had come at last to find the daylit surface intolerable.

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Four digital elevation models were generated from topographical mapsof the Yellow River delta, which were surveyed in 1956, 1967, 1980 and 1995 in ascale of 1:50 000 respectively. Knowledge on deltaic land subsidence in the deltafrom 1956 to 1995 was obtained through spatial analyses on these DEMs, andspace-time variation rule of land subsidence was obtained through statistical analysestoo.

本文收集了黃河三角洲地區(qū)1956年、1967年欧洲美女色黄A片,视频、1980年和1995年四個時期的1：5萬地形圖操h网站，提取高程信息，應(yīng)用地理信息系統(tǒng)軟件生成數(shù)字高程模型并展開了相應(yīng)的空間分析伊人91无码在线，得到各個時間段內(nèi)黃河三角洲的地面沉降速率圖www精品.国产，通過對各沉降速率圖的統(tǒng)計分析得出了三角洲地區(qū)地面沉降的時空變化規(guī)律。

Through investigating a large number of surface fractures in the eastern Sichuan Basin and combining the observation results of subsurface core fractures in the middle part of the Sichuan Basin, the relation between the surface fractures and the subsurface fractures is discussed and a set of projects to classify fractural types based on the structural origin is proposed out in this paper.

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Based on the existing data of the Yangtze delta area, a preparatory simulative experiment have been done by the model on the sea-land change course in Yangtze delta area since l0000aBP, and a good simulative effect are obvious from the hypsometric paleotopographic map and 3D color shaded-relief map which exported from the model. That provides a visual scene to analyze and discuss the Yangtze delta evolution, coastline shifting, even the relationship between the ancient civilizations migration and environments.

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In recent years, although multichannels (more than 256) gamma ray spectrometer has been made overseas, field gamma ray spectrometric survey is only used to determine contents of uranium, thorium and potassium, by reason of applying gamma ray spectrometry later than developing instruments, can't obtaining full spectrum because of the problem of stabilizing gamma ray spectrometric peaks, and it is impercipient for field gamma ray spectrometry.

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Long-term radom exploration has caused great effect to the ecology, the problems such as plant cover destroy, land impropriation, pollution, land subsidance, land collapse, raise in many places, blocking the developing of local economy.

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Huge quantities of ground water deposited in the limestone flow from south to north and are blocked by the magmatic rocks.

由于在濟南的地面下91老女露脸在线观看，存在著許多地殼裂痕，大量的地下水在壓力的作用下流出地面欧美日韩中文字幕在线不卡电影。

Terrestrial network and GPS network are adjusted separately and mixedly.

本文討論了GPS網(wǎng)與地面網(wǎng)的聯(lián)合布設(shè)变态一区，分別對地面網(wǎng)與GPS網(wǎng)進行獨立平差與混合平差，并對其平差的精度結(jié)果進行了比較和分析手机在线一级电影。