朱集礦主井凍結壁和井壁結構設計

朱集礦主井凍結壁和井壁結構設計

摘 要

本設計的主要任務有兩個，既朱集礦主井的凍結壁和井壁結構設計。設計內容一共分為四章，分別為：第一章主要介紹國內外凍結壁和井壁結構設計的發展曆程，包括：設計理念的形成、實踐，在我國的的引進發展，和對更深層次設計思想的探索等。第二章主要介紹朱集礦的工程概況，水文地質概況，和主井的主要技術參數，為而後的設計提供必要的數據儲備。第三章是主井的凍結壁設計，主要包括：凍結壁厚度的計算，凍結壁平均溫度的計算。凍結壁厚度的計算，主要是從表土段土層中選出三段控製其厚度的土層，然後采用多姆克第三、第四強度理論和經驗公式計算結果的平均值，來比較得到。凍結壁平均溫度的計算，主要是利用體平均溫度的計算方法，由於體平均溫度計算公式是適用在單排管凍結下的，而實際主井的凍結方案是三排管的差異凍結，因此最後的計算平均溫度與實際設計平均溫度有出入。第四章是主井的井壁結構設計。主要設計理念是采用雙層複合井壁，內層井壁按承受水壓力計算，外層井壁按承受凍結壓力計算，全井筒按水土壓力校核。確定井壁厚度，主要是根據井筒地質柱狀圖，把表土段土層分成三層，每一層又按內外層井壁各自承受的力分別計算出相應的井壁厚度。然後是井壁的穩定性、強度驗算以及配筋計算等，主要計算內容有：井壁環向穩定性的驗算，內外層井壁環向配筋的計算和按吊掛力計算的外層井壁的抗裂驗算和豎向抗拉鋼筋的配筋計算。

關鍵詞：立井、凍結壁設計、內層井壁，外層井壁，設計。

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.

目錄
摘 要 I
ABSTRACT II
引言 1
第一章 國內外凍結壁和井壁設計現狀概述 2
1.1 我國建井發展概況 2
1.2 國外凍結法鑿井的研究現狀 2
1.3 我國凍結法立井施工技術發展曆程 3
1.4 井壁結構概況 4
1.5 我國井壁結構型式和凍結井壁的發展概況 5
1.6 國外凍結井壁發展概況 7
1.7 我國現階段井壁設計方法及工藝 7
1.8 深井施工需要研究的幾個課題 9
1.9 設計研究中存在的一些問題 10
第二章 朱集礦主井設計概況 12
2.1 井筒概況 12
2.2 地質概況 12
2.2.1水文地質 12
2.2.2 環境地質 16
第三章 朱集礦主井凍結壁設計 21
3.1 凍結方案的選擇 22
3.2 凍結壁厚度的計算 22
3.3 凍結壁平均溫度的計算 25
3.4 鑽孔施工 26
第四章 朱集礦主井井壁設計 32
4.1 計算原則 32
4.2 確定井壁厚度 32
4.3 井壁環向穩定性驗算 35
4.4 井壁圓環受均壓時的強度驗算和內外層井壁配計算 36
4.5 按吊掛力計算外層井壁豎向鋼筋及抗裂驗算 40
結論 44
參考文獻 45
致謝 46