华南地质与矿产
華南地質與礦產
화남지질여광산
Geology and Mineral Resources of South China
2015年
3期
291-296
,共6页
地面塌陷%时空分布%成灾机制%珠江三角洲
地麵塌陷%時空分佈%成災機製%珠江三角洲
지면탑함%시공분포%성재궤제%주강삼각주
ground collapse%temporal-spatial distribution%disaster mechanism%the Pearl River Delta
地面塌陷是珠江三角洲城市地质灾害的主要类型之一。地面塌陷灾害孕灾环境复杂、致灾因子多样，承灾体脆弱，灾害后果严重。多雨的气候背景、活动断裂构造、广布的隐伏岩溶和淤泥以及剧烈的人类活动构成地面塌陷的孕灾环境；致灾因子包括自然因素和人为因素两种，自然因素致灾因子包括岩溶的发育程度、覆盖层特征、地形地貌、强降雨或重干旱气候特征等；人为因素致灾因子主要指人类活动因素，如加载和排水等。
地麵塌陷是珠江三角洲城市地質災害的主要類型之一。地麵塌陷災害孕災環境複雜、緻災因子多樣，承災體脆弱，災害後果嚴重。多雨的氣候揹景、活動斷裂構造、廣佈的隱伏巖溶和淤泥以及劇烈的人類活動構成地麵塌陷的孕災環境；緻災因子包括自然因素和人為因素兩種，自然因素緻災因子包括巖溶的髮育程度、覆蓋層特徵、地形地貌、彊降雨或重榦旱氣候特徵等；人為因素緻災因子主要指人類活動因素，如加載和排水等。
지면탑함시주강삼각주성시지질재해적주요류형지일。지면탑함재해잉재배경복잡、치재인자다양，승재체취약，재해후과엄중。다우적기후배경、활동단렬구조、엄포적은복암용화어니이급극렬적인류활동구성지면탑함적잉재배경；치재인자포괄자연인소화인위인소량충，자연인소치재인자포괄암용적발육정도、복개층특정、지형지모、강강우혹중간한기후특정등；인위인소치재인자주요지인류활동인소，여가재화배수등。
Ground collapse is one of the major types of geological disasters in cities of Pearl River Delta. The types of ground collapse include karst collapse and engineering collapse. The formative environment of ground collapse disaster is complex, disaster-inducing factors are various, hazard bearing body is vulnerable and its con-sequences are serious. Human factors arthemain cause of the ground collapse. The karst collapse is mainly due to excessively pumping groundwater, mining oheavy rains. Engineering collapse is mainly due to engineering activi-ties, such as drainage, dewatering, artificial loading, artificial vibration, excavating, surface water seepage and subway construction.
