排序方式: 共有9条查询结果,搜索用时 0 毫秒
1
1.
由于银海大厦基坑施工中软土变形较大,根据深基坑工程地质水文地质条件,优选了旋喷桩与土钉墙构筑复合土钉墙的方案进行施工,避免了水土流失,减少了基坑变形,支护稳定,取得了良好的效果。 相似文献
2.
煤矿废弃后,地下水动力场将发生变化,将形成不同于开采阶段的新的地下水动态平衡。通过对唐村煤矿水文地质条件和矿井废弃后地下水动力模式分析,分析了水位回弹过程中矿井的容水空间及其分布特点,分析了废弃矿井水位回弹的时空过程和最终动态平衡模式。 相似文献
3.
4.
5.
Significant changes of geological and hydraulic behaviors of rock mass with depth was studied. The general regulation and the critical depth of qualitative change of rock mass geological and hydraulic changes with depth were studied. Preliminary research show that the mechanical properties of rock mass gradually change from solid to plastic with the increasing of its buried depth. The critical depth of this tendency was controlled by geological properties of rock mass and its overlying rock. The critical depths are different in different regions because of its different geological condition. The general change depth of rock mass from rigid property to plastic property in coal mine regions of North China is about 1 800-2 300 m. The hydraulic permeability of rock mass will change significantly with depth because of the geological and hydraulic mechanics changes from solid to plastic and the groundwater circulation condition in karst and fractured aquifer will also change. The results reflact that the stability, deformation, failure, permeability and groundwater hazardous condition of rock mass during deep mining process are quite different from that of shallow mining's. 相似文献
6.
强含水层下特厚煤层开采顶板透水性预测 总被引:1,自引:0,他引:1
强含水层下特厚煤层开采,采用相应的开采方法,控制煤层顶板的”三带”发展,控制采动裂隙带的发育高度,使顶板隔水岩层隔水性能不被采动破坏,进而进行开采透水性预测,防止上覆水体大量涌入井下,是煤矿安全生产中的关键技术。 相似文献
7.
8.
文章从四个方面评价了采矿对神东水资源系统的影响状况,通过评价分析,证明只有真正做到"保水采煤",才能实现大型煤炭基地的可持续发展。在此基础上,提出了实现保水采煤的途径应根据不同的水文地质条件,选择合理的开采区域,采取合理的开采方式,并在开采过程中利用一些必要的技术措施,同时也可以对污水、矿井水进行资源化处理,来实现保水采煤这一战略方针。 相似文献
9.
1