广饶县地面沉降成因及预测分析

Analysis on the Origin and Predication of Ground Subsidence in Guangrao County

摘要:

地面沉降是指由于自然因素或人类工程活动引发的地下松散岩层固结压缩,并导致一定区域范围内地面高程降低的地质现象，是一种缓变性地质灾害。广饶县地处东营市南端，根据2004—2016年地面沉降监测资料，其沉降中心累计沉降量已超过了1500mm，最大沉降速率超过70mm/a，属地面沉降强发育。通过对地面沉降发生、发展规律和引发地面沉降的成因进行了分析，并在现状条件下对地面沉降趋势进行了预测分析。

Abstract:

Ground subsidence refers to the the consolidation and compression of underground loose rock strata which is caused by natural factors or human engineering activities. It also causes the ground elevation to be reduced in a certain area. It is a kind of slow degeneration geological disaster. Guangrao county is located in the south of Dongying city. According to land subsidence monitoring data in 2004—2016, the settlement center has exceeded 1500mm, and the maximum settlement rate is more than 70mm/a, which is a strong land subsidence area. Through analysis on the law of occurrence and development of land subsidence, the causes of land subsidence have been analyzed, and the trend of land subsidence under the current conditions have been predicated.