矿区表土疏水沉降机理及其与井壁破裂的关系

基金项目:

安徽省教育厅资助(2005KJ008)

详细信息

Relation between the seepage sedimentation mechanism of soil in mining area and shaft rupture

1. Anhui University of Science and Technology, Huainan 232001, China;
2. Huainan Mining Group Corp. Ltd., Huainan 232001, China;
3. College of Civil Engineering & Architecture, China Mining University of Science and Technology, Beijing 100083, China

摘要: 为了揭示矿区表土疏水沉降的机理,并透析表土沉降与井壁破裂之间的关系,从表土疏水沉降的模拟实验入手,分析了矿区表土缩水沉降的机理。揭示了矿区表土层中非压缩区的存在,并在此基础之上分析了立井井筒所承受的负向滑动摩擦力的形成及变动规律,剖析了井壁破裂与表土层厚度及下含水水位的特定对应关系,为揭示井壁破裂时间的可预测性奠定了基础。
- 疏水沉降 /
- 机理 /
- 负向摩擦 /
- 破裂预测
Abstract: The main purpose is to find out the seepage sedimentation mechanism of soil in mine, and analyzes the relation between soil sedimentation and shaft rupture. In this paper, the simulation experiment of ground water seepage and soil sedimentation is conducted. The seepage sedimentation mechanism of soil is analyzed. The relative non-compression zone in soil around shaft is revealed. The formation reason and variable laws of slide negative friction are studied. Based on the analysis of a lot of the fracture shafts in China, the relation between ground water seepage and shaft rupture is investigated. The results show that the time of shaft rupture can be predicted by analyzing the level of groundwater around shaft.
- seepage sedimentation /
- rupture mechanism /
- negative friction /
- rupture forecast