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香港新界地区多山多坡 ,地势险要 ,土地利用相对不足。在暴雨季节 ,是滑坡和山泥倾泻的重灾区之一 ,对区内道路、建筑构成威胁。港九地块自晚中生代至早第三纪以来 ,以持续稳定上升为主 ,其活动性明显低於周边相对下沉的中新生代盆地。香港地区北侧边界为深圳断裂 ,南侧为海丰断裂。这两条主干断裂呈北东展布 ,左行剪切。它们导致香港地区的三套断裂系统 :北东向的区域断裂 ;北东东到东西向的断裂系统 ;次级的北西向断裂系统。这三组断裂控制了香港地区的构造地貌 ,在雷达图像上清晰的表现出岩块的破裂程度和断裂配套格局。全区的构造地貌特征明显 ,花岗岩火山岩抗风化能力强弱不均 ,地表不稳定因素大量存在 ,再加上高频率、高强度暴雨袭击 ,以及坡积物不易固积等原因 ,极易导致滑坡和山泥倾泻事件发生 ,造成人员伤亡和遭受经济损失。香港滑坡泥石流主要受地形条件、土体结构与强度、暴雨入渗特征、植被复盖以及人为搅动等因素的控制。由于滑坡泥石流规模小、密度大、频率高 ,因此在研究工作中还广泛地使用遥感方法。在新界地区 ,许多滑坡与微地貌有关。在复盖层较簿或缺失的地方 ,微地貌基本上反映了基岩的微构造。雷达对线性构造的探测有其独到的优势 ,低序次构造规模小但数量多 ,在雷达图像上以线性?
The mountainous multi-slope in the New Territories of Hong Kong is terribly difficult and the land use is relatively inadequate. During the heavy rainy season, it is one of the hardest hit landslides and landslides, threatening the roads and buildings in the area. Since the Late Mesozoic to early Tertiary, the Hong Kong-Kowloon plots have been characterized by a steady and steady rise with much lower activity than the relatively mid-Cenozoic basins in the vicinity. The northern boundary of Hong Kong is the Shenzhen fault and the south is the Haifeng fault. The two main faults show a north-east distribution and shear on the left. They led to three sets of fault systems in Hong Kong: north-east zone faults; north-east-east-west fault systems; and secondary north-west fault systems. These three sets of faults controlled the tectonic landform in Hong Kong and clearly demonstrated the degree of rock block rupture and fracture pattern on the radar image. The tectonic and geomorphological features of the whole area are obvious. The anti-weathering ability of granitic volcanics is uneven and there are a lot of unstable factors on the ground. Coupled with the high-frequency and high-intensity torrential rains and the difficult accumulation of slope products, landslides can easily occur And landslides, resulting in human casualties and economic losses. Landslides and landslides in Hong Kong are mainly controlled by topographical conditions, soil structure and strength, infiltration characteristics of heavy rainfall, vegetation cover and artificial agitation. Due to the small scale, high density and high frequency of landslide debris flow, remote sensing methods are also widely used in the research work. In the New Territories, many landslides are related to micro-topography. Micro-topography basically reflects the micro-structure of bedrock where the overburden is more or less absent. Radar detection of linear structures has its own unique advantages, low-order structure of a small but large number, in the radar image to linear?