【摘要】：本文搜集了我國煤礦井下1357條地應(yīng)力資料,其中包括406條應(yīng)力解除資料和951條水壓致裂資料,地應(yīng)力資料以小孔徑水壓致裂地應(yīng)力數(shù)據(jù)為基礎(chǔ)。在此基礎(chǔ)上編制了"中國煤礦應(yīng)力環(huán)境數(shù)據(jù)庫"�；跀�(shù)據(jù)庫中煤礦井下實(shí)測地應(yīng)力數(shù)據(jù),采用理論分析、數(shù)理統(tǒng)計(jì)和數(shù)值模擬等研究方法對我國煤礦井下地應(yīng)力的分布規(guī)律和主要影響因素展開了細(xì)致的研究;選取典型礦區(qū),對煤礦井下地應(yīng)力場反演進(jìn)行了初步探索。通過本文的研究,取得了如下成果:(1)基于搜集的煤礦井下地應(yīng)力數(shù)據(jù),編制了"中國煤礦應(yīng)力環(huán)境數(shù)據(jù)庫",對于煤礦井下地應(yīng)力數(shù)據(jù)可以進(jìn)行精確快速查詢,結(jié)果以地應(yīng)力地圖的形式進(jìn)行展示,實(shí)現(xiàn)了地應(yīng)力數(shù)據(jù)的可視化查詢。同時(shí),繪制了中國大陸分區(qū)煤礦地應(yīng)力地圖和中國煤礦礦區(qū)地應(yīng)力地圖。(2)建立了煤礦井下幾組典型特征參數(shù)隨埋深變化的散點(diǎn)圖并進(jìn)行了回歸分析。其中,最大、最小水平主應(yīng)力和垂直應(yīng)力隨埋深變化的線性回歸公式:σH=3.267 + 0.0215H;σh= 1.954+ 0.0113H;σV= 0.0245H。最大、平均和最小水平主應(yīng)力側(cè)壓比隨埋深變化的回歸公式為:KH=160.35/K/+ 0.801;Kav = 129.58/H + 0.606;Kh=99.86/H + 0.405。通過這些特征參數(shù),對煤礦井下地應(yīng)力分布規(guī)律進(jìn)行了系統(tǒng)研究。(3)在數(shù)據(jù)庫中選取了 42組粉砂巖地應(yīng)力數(shù)據(jù),136組細(xì)砂巖地應(yīng)力數(shù)據(jù),99組泥質(zhì)地應(yīng)力砂巖數(shù)據(jù)和90組泥巖地應(yīng)力數(shù)據(jù),建立了不同巖性的最大、最小水平主應(yīng)力和水平剪應(yīng)力以及平均水平主應(yīng)力側(cè)壓比隨埋深的散點(diǎn)圖并進(jìn)行了回歸分析,研究了巖性對于地應(yīng)力分布的影響。(4)在數(shù)據(jù)庫中選取了 77組含有測點(diǎn)煤巖體彈性模量和泊松比的地應(yīng)力數(shù)據(jù)資料,建立了這些地應(yīng)力數(shù)據(jù)的最大、最小水平主應(yīng)力和垂直應(yīng)力與埋深和彈性模量的多元線性回歸公式:σH= 0.0015 + 0.0366H + 0.015E;σH= 0.024 +0.0186H-0.00099E;σV= 0.327 + 0.0226H-0.0106E。建立了水平剪應(yīng)力和最大主應(yīng)力差與埋深H和彈性模量E的多元線性回歸公式:σ1-3 = 0.275 + 0.018H +0.0205E。通過多元回歸和擬合對Sheorey的平均水平主應(yīng)力側(cè)壓比理論公式進(jìn)行了參數(shù)修正的研究。(5)針對煤礦井下地應(yīng)力與斷層滑動(dòng)判別依據(jù)展開了討論,給出了地應(yīng)力與斷層滑動(dòng)關(guān)系研究的三種模式:逆正型斷層滑動(dòng)最大最小水平主應(yīng)力模式、斷層摩擦滑動(dòng)最大主應(yīng)力差模式和莫爾應(yīng)力圓臨界切線模式。(6)以潞安常村煤礦為背景,通過數(shù)值模擬對常村煤礦應(yīng)力場進(jìn)行了反演�，F(xiàn)場實(shí)測數(shù)據(jù)和數(shù)值模擬結(jié)果具有比較好的一致性。同時(shí),根據(jù)地應(yīng)力反演結(jié)果分析了斷層和褶曲等地質(zhì)構(gòu)造對于構(gòu)造應(yīng)力場的影響。
[Abstract]:In this paper, 1357 ground stress data in coal mines in China are collected, including 406 stress relief data and 951 hydraulic fracturing data. The ground stress data are based on the ground stress data of small aperture hydraulic fracturing. On this basis, the database of coal mine stress environment in China is compiled. Based on the measured ground stress data in coal mine database, the distribution law and main influencing factors of underground ground stress in coal mine in China are studied in detail by means of theoretical analysis, mathematical statistics and numerical simulation, and the inversion of underground ground stress field in coal mine is preliminarily explored by selecting typical mining areas. Through the research of this paper, the following results have been obtained: (1) based on the collected ground stress data of coal mine, the "China Coal Mine stress Environment Database" is compiled. The ground stress data of coal mine can be queried accurately and quickly. The results are displayed in the form of ground stress map, and the visual query of ground stress data is realized. At the same time, the geostress map of divided coal mines in mainland China and the geostress map of coal mining areas in China are drawn. (2) the scattered point maps of several groups of typical characteristic parameters in coal mines with buried depth are established and regression analysis is carried out. Among them, the linear regression formulas of maximum, minimum horizontal principal stress and vertical stress with buried depth are as follows: 蟽 H 鈮，

本文編號(hào)：2499845