堆场大面积堆载周围环境影响分析

ENVIRONMENTAL IMPACT ANALYSIS OF A ORE YARD BY A LARGE-SCALE ORE LOAD

为了有效地控制堆场堆载对周围环境的影响,及时调整或采取适当措施来确保工程正常安全运营提供依据,以矿石码头使用期间堆场周围建筑物沉降、土体深层水平位移的长期监测结果为基础,分析了大面积堆载对周围建筑物沉降的影响规律和堆场周围土体的深层水平位移的变形趋势。结果发现:垂直堆场方向离堆场越近建筑物的沉降越大,平行堆场方向越靠近堆场的中部建筑物的沉降越大;堆场周围土体水平位移呈现"闭口型",且堆场中部对周围土体的水平位移影响更明显,随着堆载时间增加,影响深度也越来越深,整个堆场有向北移动的趋势。周围建筑物的沉降和不均匀沉降不大,不影响建筑物的正常使用,周围土体的水平位移有增长的趋势,需要继续监测。

Based on the long-term monitoring of building＇ s settlement and horizontal displacement of the deep soil around an ore yard during its operations, this dissertation aims to analyze the influence of building settlement and the deformation trend of horizontal displacement of the deep soil around the ore yard by a largescale pile load. All of these efforts are to control the impact of yard loading on the surroundings effectively and to adjust or to take appropriate measures on time to ensure operation of the project＇ s safety. The conclusion is that the closer to the yard, the more settlemnent in the vertical direction away from the yard, while the nearer to the center of the yard, the more settlement ＇in the direction parallel to the yard. The result also shows that the horizontal displacement of soil around the yard is ＂close type＂, and the central yard has a greater impact on the horizontal displacement of the surrounding soil. With the increased time of pile load, the influence is becoming intensive in terms of its depth, and the whole yard presents to move towards north because of pile load. But the settlement and the uneven settlement of the surrounding buildings are not obvious, which don＇ t affect the normal usage of them. In addition, there is a growing tendency of the horizontal displacement of soil around the yard,and this phenomenon needs a long-term monitoring .