工程地質(zhì)體結(jié)構(gòu)模型與地質(zhì)狀態(tài)基本信息分析方法研究

姜琳婧

摘 要：該研究完成的任務(wù)主要有：（1）通過現(xiàn)場(chǎng)勘察，獲得三個(gè)滑坡的地質(zhì)資料，分析了災(zāi)害分布特征，并提出治理方案；（2）提出了更方便、快捷的GSI量化表，并給出GSI與結(jié)構(gòu)體主要力學(xué)參數(shù)之間的理論關(guān)系；（3）為滿足不同的巖石力學(xué)實(shí)驗(yàn)需求，研制了相關(guān)的實(shí)驗(yàn)設(shè)備，并進(jìn)行了相關(guān)實(shí)驗(yàn)研究，對(duì)巖石破壞機(jī)制及本構(gòu)關(guān)系有了新的認(rèn)識(shí)；（4）通過土石混合體的力學(xué)、滲流及損傷特性的試驗(yàn)研究，得到了土石混合體相關(guān)的力學(xué)屬性、滲流特征以及破壞特征；（5）通過對(duì)武隆雞尾山地下采礦區(qū)與坡體移動(dòng)變形規(guī)律的分析研究，確定了地下開采對(duì)滑坡的影響；（6）進(jìn)一步完善了巖土和地層地質(zhì)界面識(shí)別技術(shù)和方法；（7）通過對(duì)斷裂巖石在蠕變環(huán)境下的聲發(fā)射特征和細(xì)觀接觸損傷實(shí)驗(yàn)研究，揭示斷裂巖體長(zhǎng)期力學(xué)行為和失穩(wěn)破壞前兆信息；（8）解決了多尺度地質(zhì)體建模中的三個(gè)關(guān)鍵問題，并應(yīng)用于華亭煤田；（9）將偏最小二乘法應(yīng)用于地應(yīng)力場(chǎng)的反演中，所得地應(yīng)力場(chǎng)結(jié)果精確，與多尺度方法相結(jié)合，應(yīng)用于局部地應(yīng)力場(chǎng)的預(yù)測(cè)，顯示出明顯優(yōu)勢(shì)；借助ABAQUS軟件的二次開發(fā)接口，使用復(fù)雜邊界條件，進(jìn)行地應(yīng)力場(chǎng)的計(jì)算，更符合實(shí)際情況，計(jì)算結(jié)果也更精確；（10）以撫順東露天礦為背景，從損傷的概念出發(fā)，通過試驗(yàn)，研究了巖石在損傷過程中電性與力學(xué)性能之間的關(guān)系，建立了以彈性模量檢測(cè)方法和電阻率檢測(cè)方法為基礎(chǔ)的損傷變量計(jì)算方法，構(gòu)建了巖石力學(xué)性能和電性之間的關(guān)系。將電阻率的變化與巖石力學(xué)性質(zhì)聯(lián)系起來，進(jìn)而通過現(xiàn)場(chǎng)的電阻率探測(cè)，描述和評(píng)價(jià)開采擾動(dòng)地層的損傷狀態(tài)；以窯街海石灣礦為背景，進(jìn)行坡下開采巖體移動(dòng)破壞相似模擬實(shí)驗(yàn)和利用GDEM軟件進(jìn)行開采擾動(dòng)邊坡穩(wěn)定性數(shù)值分析，揭示隨地下開挖邊坡破壞和移動(dòng)規(guī)律；（11）完善了邊坡工程地質(zhì)信息管理與災(zāi)變分析和預(yù)警系統(tǒng)，并對(duì)唐山古冶區(qū)尾礦庫(kù)進(jìn)行了采動(dòng)影響下的巖體力學(xué)參數(shù)識(shí)別和預(yù)測(cè)，所得結(jié)果與實(shí)測(cè)結(jié)果相符。

關(guān)鍵詞：地質(zhì)模型 土石混合體 地應(yīng)力 多尺度 地質(zhì)與數(shù)值建模

Abstract：The planned task of this year has been basically completed by the ways of in situ investigations，experiments and researches. It mainly included：（1）The geological data of three landslides were acquired by on site investigation，the hazard distribution characteristic was analyzed and the control plan was proposed.（2）A more convenient and efficient GSI quantization table is proposed.（3）To meet the needs of different rock mechanics experiments， the related laboratory equipments were developed and the experiments were conducted， a new understanding of the rock failure mechanism and constitutive relation were got.（4）The mechanical properties，seepage and failure characteristics of earth-rock aggregate were got through the experiments.（5）Through the analysis of the rule between the underground mining area and the movement of the slope in Wulong Jiwei mountain area，the impact of the underground mining on landslide was determined.（6）The interface identification techniques and methods for geotechnical and geological formation were improved.（7）By experimental studies of the acoustic emission and microscopic contact damage characteristics when it was creeping of fractured rock， it showed the long term mechanical behavior and the precursor information of the unstable failure.（8）Three key issues of the multi-scale geological modeling were solved and applied in Huating coal field.（9）The partial least square method was applied in the calculation of in situ stress field.It was more advantaged when combining with multi-scale method；the complex boundary conditions were used to inversely calculate the in situ stress field on the basis of the secondary development of ABAQUS software，which is more close to the actual situation.（10）The relationship between electrical and mechanical properties in the process of the damage was studied based on Fushun east open mine，and the damage variable calculation method was established on based on detection method for elasticity modulus and resistivity， at the same time，the relationship between the mechanical and electrical properties of rock was created.For Haishiwan coal mine，the similar simulation experiments of moving damage of rock and numerical analysis were done for the stability of the slope after mining，it showed the damage and moving rule of the slope with the progress of excavation.（11）The system for the slope engineering geological information management， and the disaster analysis and early warning was improved.

Key Words：Geologic model；Rock-soil aggregate；Ground stress；Multi-scale；Geological and numerical modeling

閱讀全文鏈接（需實(shí)名注冊(cè)）：http：//www.nstrs.cn/xiangxiBG.aspx？id=51706&flag=1