朱集矿主井冻结壁和井壁结构设计

朱集矿主井冻结壁和井壁结构设计

摘 要

本设计的主要任务有两个，既朱集矿主井的冻结壁和井壁结构设计。设计内容一共分为四章，分别为：第一章主要介绍国内外冻结壁和井壁结构设计的发展历程，包括：设计理念的形成、实践，在我国的的引进发展，和对更深层次设计思想的探索等。第二章主要介绍朱集矿的工程概况，水文地质概况，和主井的主要技术参数，为而后的设计提供必要的数据储备。第三章是主井的冻结壁设计，主要包括：冻结壁厚度的计算，冻结壁平均温度的计算。冻结壁厚度的计算，主要是从表土段土层中选出三段控制其厚度的土层，然后采用多姆克第三、第四强度理论和经验公式计算结果的平均值，来比较得到。冻结壁平均温度的计算，主要是利用体平均温度的计算方法，由于体平均温度计算公式是适用在单排管冻结下的，而实际主井的冻结方案是三排管的差异冻结，因此最后的计算平均温度与实际设计平均温度有出入。第四章是主井的井壁结构设计。主要设计理念是采用双层复合井壁，内层井壁按承受水压力计算，外层井壁按承受冻结压力计算，全井筒按水土压力校核。确定井壁厚度，主要是根据井筒地质柱状图，把表土段土层分成三层，每一层又按内外层井壁各自承受的力分别计算出相应的井壁厚度。然后是井壁的稳定性、强度验算以及配筋计算等，主要计算内容有：井壁环向稳定性的验算，内外层井壁环向配筋的计算和按吊挂力计算的外层井壁的抗裂验算和竖向抗拉钢筋的配筋计算。

关键词：立井、冻结壁设计、内层井壁，外层井壁，设计。

A FREEZE ON THE MAIN SHAFT AND THE SHAFT WALL STRUCTURE DESIGN OF ZHUJI COAL MINE

ABSTRACT


This design has two main design task is not only the Chinese set of freeze wells mine shaft wall and the structural design. Chapter I: at home and abroad to introduce a freeze on the main shaft wall and the structural design of the development process, including: the formation of design concepts, practice, in the introduction of China's development, and a deeper exploration of design ideas. Chapter II: mainly mining projects Zhu Overview, hydrological geology, and the main shaft of the main technical parameters for the design and then provide the necessary data on reserves. Chapter III: is the main shaft of the frozen wall design, including: a freeze on the calculation of wall thickness, freezing the calculation of the average temperature of the wall. A freeze on the calculation of wall thickness, mainly from the topsoil layer selected paragraph three of the soil to control its thickness, and then used dome third, fourth strength theory and the empirical formula for calculating the average of the results to be compared. A freeze on the calculation of the average temperature of the wall, the main body is to use the method of calculating the average temperature, average body temperature as a result of the calculation formula is applicable to freeze in a single row under control, but the actual freezing of the main shaft is the difference between the three pipes to freeze, so the final the calculation of average temperature and average temperature is different from the actual design. Chapter IV: is the main shaft of the wall structure design. The main design concept is the use of double-layer composite wall, the inner wall by water pressure to bear, the outer wall by the freezing of the pressure to bear, the whole shaft by checking the pressure of water and soil. Determine the wall thickness, are mainly based on the geological column shaft, the surface soil layer is divided into three paragraphs, each layer of wall and floor in accordance with their respective internal and external forces were calculated under the corresponding wall
thickness. Then the stability, strength and reinforcement of checking the calculations, are: Central to the stability of wall checked, both inside and outside the ring wall to the reinforcement layer of calculation and calculation by the hanging wall of the outer layer of the anti - Checking and vertical split tensile steel reinforcement of the calculation.

KEYWORDS: shaft, frozen wall design, the inner wall, outer wall design.

目录
摘 要 I
ABSTRACT II
引言 1
第一章 国内外冻结壁和井壁设计现状概述 2
1.1 我国建井发展概况 2
1.2 国外冻结法凿井的研究现状 2
1.3 我国冻结法立井施工技术发展历程 3
1.4 井壁结构概况 4
1.5 我国井壁结构型式和冻结井壁的发展概况 5
1.6 国外冻结井壁发展概况 7
1.7 我国现阶段井壁设计方法及工艺 7
1.8 深井施工需要研究的几个课题 9
1.9 设计研究中存在的一些问题 10
第二章 朱集矿主井设计概况 12
2.1 井筒概况 12
2.2 地质概况 12
2.2.1水文地质 12
2.2.2 环境地质 16
第三章 朱集矿主井冻结壁设计 21
3.1 冻结方案的选择 22
3.2 冻结壁厚度的计算 22
3.3 冻结壁平均温度的计算 25
3.4 钻孔施工 26
第四章 朱集矿主井井壁设计 32
4.1 计算原则 32
4.2 确定井壁厚度 32
4.3 井壁环向稳定性验算 35
4.4 井壁圆环受均压时的强度验算和内外层井壁配计算 36
4.5 按吊挂力计算外层井壁竖向钢筋及抗裂验算 40
结论 44
参考文献 45
致谢 46