本文選題：開采沉陷 + 殘余變形預計模型�。� 參考：《江蘇師范大學》2017年碩士論文

【摘要】：我國大部分煤礦位于山區(qū),山區(qū)煤礦地下開采后在地表會形成大面積的采空區(qū),給礦區(qū)環(huán)境造成了極大破壞。隨著國民經濟的快速發(fā)展,大量的工程建設項目處于采空區(qū),在采空區(qū)地表上方進行工業(yè)及建筑物修建時,對于地表的穩(wěn)定性評價是非常重要的問題,而影響老采空區(qū)穩(wěn)定性的主要因素是開采殘余移動變形,即殘余變形量的大小及殘余持續(xù)時間直接影響著該區(qū)域建筑物等設施的變形。針對這些問題,本文主要做了如下工作:(1)在收集、整理三個山區(qū)煤礦采空區(qū)地表沉陷資料的基礎上,通過對地表觀測站實測數據、地形圖數據的處理,根據開采沉陷學原理以及采動覆巖動態(tài)移動分析,揭示了殘余移動變形的規(guī)律,得到殘余移動變形的影響因素,如上覆巖層性質、采煤與頂板管理辦法、工作面開采寬深比、工作面位置及持續(xù)時間等。(2)分析了殘余移動變形產生的機理,得到采空區(qū)殘余變形的分區(qū)性質,利用概率積分法確定其預計參數,建立了殘余移動變形的預計模型。(3)利用不同時期測繪的采空區(qū)地表地形圖,從宏觀區(qū)域上分析以往布設地表觀測站的同一采空區(qū)地表的高程變化情況,通過對比該區(qū)域高程值的變化得到這一區(qū)域的下沉值,并與當年的觀測數據相比較,得到這一區(qū)域內殘余下沉值。(4)根據殘余變形的蠕變特性,建立殘余變形值與延續(xù)時間的負指數相關性函數,并用西曲礦不同年份測繪的地形圖數據,驗證殘余下沉延續(xù)時間相關性的正確性。
[Abstract]:Most of the coal mines in our country are located in the mountainous area. After underground mining in the mountainous area, a large area of goaf will be formed on the surface, which has caused great damage to the environment of the mining area.With the rapid development of the national economy, a large number of engineering construction projects are in the goaf. When industrial and building construction is carried out above the surface of the goaf, it is very important to evaluate the stability of the surface.The main factor affecting the stability of the old goaf is the residual displacement deformation of mining, that is, the magnitude of residual deformation and the residual duration directly affect the deformation of buildings and other facilities in this area.In view of these problems, this paper mainly does the following work: 1) on the basis of collecting and sorting out the ground subsidence data in the goaf of three mountain coal mines, through the processing of the measured data and topographic map data of the surface observation station,According to the principle of mining subsidence and the dynamic movement analysis of mining overburden, the law of residual movement and deformation is revealed, and the influencing factors of residual movement deformation are obtained, such as the property of overlying strata, the management method of mining coal and roof, the ratio of width to depth of mining face.In this paper, the mechanism of residual displacement deformation is analyzed, the zoning properties of residual deformation in goaf are obtained, and the predicted parameters are determined by probability integral method.The prediction model of residual movement deformation is established. (3) using the surface topographic map of goaf surveying and mapping in different periods, the elevation variation of the same goaf in the same goaf that used to be set up at the surface observation station is analyzed from the macroscopic area.The subsidence value of this area is obtained by comparing the variation of elevation values in this area, and compared with the observed data of the current year, the residual subsidence value in this area is obtained. (4) according to the creep characteristics of residual deformation,The negative exponential correlation function between the residual deformation value and the continuation time is established, and the validity of the correlation between the residual subsidence duration and the residual subsidence duration is verified by using the topographic map data from different years of Xiqu Mine.
【學位授予單位】：江蘇師范大學
【學位級別】：碩士
【學位授予年份】：2017
【分類號】：TD325.3

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