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广西北部湾沿岸地区自然地理条件优越,农林、矿产、海洋等资源丰富,陆海交通方便,是我国沿海14个对外开放的经济特区之一,特区建设方兴未艾.但地区地质环境脆弱,存在诸多不利因素,如地壳活动性、断裂活动性强,地震活动频度高,新构造运动强烈,地壳稳定性差;内外动力作用、海岸动力作用强,海平面变化大,海陆进退频繁;第四系地层发育,松散易液化的细粉砂土,不规则分布的软土分布面积广,地面及地基工程地质条件差;天然淡水资源不足;以及受台风、暴雨气候的影响水土流失严重等.故地震、地裂缝、地面沉积,崩塌、水土流失、海水入侵、水环境污染,地基失稳等地质灾害频频发生,而且随着特区经济建设的开展有增强增多趋势,对特区建设与经济发展影响颇大.因此有必要进行专门的综合性的地质环境地质灾害调查研究工作,为特区总体发展规划与国防建设规划,为特区经济建设协调地质环境与经济发展关系,保护地质环境,防治地质灾害,减少致灾损失提供科学依据.
The coast of Guangxi Beibu Gulf enjoys excellent natural and geographical conditions with rich resources in agriculture, forestry, mineral resources and oceans, and convenient land and sea transportation. It is one of the 14 special economic zones open to the outside world along the coast of China, and the special economic zone is in the ascendant. Factors such as crustal activity, strong fault activity, high frequency of seismic activity, strong neotectonic movement and poor crustal stability; strong internal and external dynamic effects, strong coastal motions, large sea level changes and frequent sea and land movements; and the development of Quaternary strata , Loose and liquefiable fine silt, irregular distribution of soft soil area, poor ground and foundation engineering geological conditions; lack of natural freshwater resources; and by the typhoon, rainstorm climate and other serious soil erosion, so the earthquake, and Geological disasters such as cracks, ground deposits, landslides, soil erosion, seawater intrusion, water pollution and instability of foundations are frequent occurrences. As the economic construction of the SEZ increases and increases, it has a great impact on the construction and economic development of the SAR. It is necessary to conduct a special comprehensive geological geological disasters investigation and research work for the SAR general development plan and national defense Construction planning for the economic construction of the SAR to coordinate the relationship between geological environment and economic development, protect the geological environment, prevent geological disasters and reduce disaster losses to provide a scientific basis.