19232.渭北石炭二疊紀(jì)煤田地質(zhì)構(gòu)造發(fā)育特征對(duì)地下水的控制作用

1、論文題目：渭北石炭二疊紀(jì)煤田地質(zhì)構(gòu)造發(fā)育特征對(duì)地下水的控制作用專業(yè)：地質(zhì)工程碩士生：成龍（簽名）指導(dǎo)教師：王英（簽名）錢建峰（簽名）摘要渭北石炭二疊紀(jì)煤田是陜西省重要的煤炭生產(chǎn)基地之一。近年來，隨著煤炭資源開發(fā)的速度加快，各礦區(qū)煤層逐步向深部開采，煤系沉積基底的奧灰?guī)r巖溶水已成為威脅礦井安全生產(chǎn)的主要因素。奧灰?guī)r巖溶水具有水量大、區(qū)域水動(dòng)力場(chǎng)穩(wěn)定的特點(diǎn)，且對(duì)煤田東部地區(qū)的開采影響較大。本文在詳細(xì)研究分析了渭北煤田地質(zhì)構(gòu)造發(fā)育特征和水文地

2、質(zhì)條件的基礎(chǔ)上，著重討論了地質(zhì)構(gòu)造對(duì)渭北煤田水文地質(zhì)單元的邊界條件、水文地質(zhì)單元?jiǎng)澐?、巖溶發(fā)育和地下水的補(bǔ)給、徑流、排泄條件的影響等；認(rèn)為地質(zhì)構(gòu)造對(duì)地下水的空間分布、形成和運(yùn)移起著關(guān)鍵性的作用，對(duì)水文地質(zhì)特征的控制作用明顯。得出以下主要結(jié)論：（1）渭北煤田中部以斷裂構(gòu)造為主，東西兩側(cè)以褶皺構(gòu)造為主。構(gòu)造線方向明顯，以北東方向?yàn)橹鳎鳂?gòu)造線方向可分為近EW、近SN、NW和NE四組；（2）煤田構(gòu)造分布疏密相間，斷層集中成帶，分區(qū)分帶性明顯。

3、沿東西向從東到西可分為韓城合陽斷層密集帶、澄城縣城東斷層密集帶、洛河斷層密集帶、東坡鴨口斷層密集帶和銅川西區(qū)斷層密集帶等5個(gè)北東向斷層密集帶；沿南北向從北向南可劃分為F2斷層密集帶、愛怗村斷層密集帶和杜康溝合陽斷層密集帶等3個(gè)東西向斷層密集帶；（3）合耀水文地質(zhì)單元和韓城水文地質(zhì)單元的分界大致是由向斜構(gòu)造和逆斷層組綜合作用的結(jié)果；（4）壓扭性斷層尤其是逆斷層形成區(qū)域，斷層的阻水作用明顯；張扭性正斷層或者在張扭性正斷層切割的區(qū)域，斷層的導(dǎo)

4、水作用明顯；（5）在褶皺的軸部及轉(zhuǎn)折端發(fā)育處，是地下水的富集區(qū)域；（6）巖溶陷落柱導(dǎo)水性能差異很大，雖然絕大部分陷落柱不導(dǎo)水，但陷落柱一旦導(dǎo)水，往往是災(zāi)害性的。關(guān)鍵詞：地質(zhì)構(gòu)造，地下水，構(gòu)造控水，渭北石炭二疊紀(jì)煤田研究類型：應(yīng)用研究型Subject:WeibeiPCCoalfieldgeologicaltectonicdevelopmentcontrolacteristicsofgroundwaterSpecialty:Geologic

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