本文選題：庫下采煤 + 地表移動　； 參考：《中國地質(zhì)大學(xué)(北京)》2015年碩士論文

【摘要】：我國是人口大國,加之改革開放以來國民經(jīng)濟的飛速發(fā)展,必須逐年增加煤炭資源開采量,導(dǎo)致易采煤資源量越來越少。若能在保證壩體與礦井的安全的基礎(chǔ)上,開采出水體下儲量大、開采難度大的煤炭資源,則可以提高經(jīng)濟效益,緩解能源緊張的局面。目前,中國能源較為短缺,如何高效率地安全開采出水體下的煤炭資源,既關(guān)乎煤炭科技建設(shè),又關(guān)乎我們經(jīng)濟長期穩(wěn)固地發(fā)展,特別重要。對水體下的采煤工作,最基本的問題包括如何發(fā)展理論,如何實踐,如何隨時發(fā)展新技術(shù),如何把新科技具體地運用到經(jīng)濟方面,收獲實際效益,這些都是要面臨的大問題。本論文在總結(jié)了大平礦區(qū)自然地理與地質(zhì)概況的基礎(chǔ)上,對地表移動范圍與特征(概率積分法、FLAC3D數(shù)值模擬方法)和地表水滲漏危險性(《三下規(guī)程》經(jīng)驗公式、數(shù)值模擬方法)等方面進行了詳細的分析,主要得到以下結(jié)論:1、利用概率積分法計算,七步采完后,地表最大沉降量為10.56m,平均影響半徑531.2m。2、利用FLAC3D數(shù)值模擬方法,七步采完后,地表最大沉降量為14.51m,平均影響半徑為516.2m。3、S2S2工作面距離壩體的距離約為900m,大平礦庫下采煤引起的地表移動影響不到壩體。4、根據(jù)《三下規(guī)程》經(jīng)驗公式計算,“兩帶”發(fā)育高度(77.82m)加上保護層厚度(4倍煤層厚度46m)為123.82m。5、利用數(shù)值模擬方法計算,“兩帶”發(fā)育高度(94.5m)加上留設(shè)防水煤柱高度(4倍煤層厚度46m)為140.5m。6、開采1、2#煤層引起的“兩帶”發(fā)育的最上端,位于白堊系的相對隔水層,上覆還有第四系的隔水層,所以不會引起地表水向礦井滲漏。
[Abstract]:With the rapid development of the national economy since the reform and opening up, China is a large country with large population, so it is necessary to increase the exploitation of coal resources year by year, resulting in less and less coal resources easily mined. On the basis of ensuring the safety of the dam body and the mine, the coal resources with large reserves under the water body and great difficulty in mining can be exploited, which can improve the economic benefit and alleviate the energy shortage. At present, there is a shortage of energy in China. How to exploit coal resources under water body efficiently and safely is not only related to the construction of coal science and technology, but also to the long-term steady development of our economy, which is particularly important. For coal mining under water body, the most basic problems include how to develop theory, how to practice, how to develop new technology at any time, how to apply new technology to economy, and how to harvest actual benefits. On the basis of summarizing the general situation of physical geography and geology in Daping mining area, this paper gives an empirical formula for the range and characteristics of surface movement (probability integration method / FLAC3D numerical simulation method) and the surface water leakage risk (< three lower regulations >). Numerical simulation method) and other aspects are analyzed in detail. The following conclusions are obtained: 1: 1, calculated by probability integration method, the maximum surface subsidence is 10.56 m after the seven-step harvest, and the average influence radius is 531.2 m.2.Using the FLAC3D numerical simulation method, after the seven-step harvest, the maximum subsidence is 10.56 m, and the average influence radius is 531.2 m 路2. By using the FLAC3D numerical simulation method, after the seven-step harvest, The maximum surface subsidence is 14.51 m, the average radius of influence is 516.2m.3S2S2 and the distance from the face to the dam body is about 900m. The surface movement caused by coal mining under the Daping Mine Reservoir can not affect the dam body .4. the calculation is based on the empirical formula of "three Lower rules". The development height of "two zones" (77.82 m) and the thickness of coal seam of 4 times thickness of protective layer are 123.82 m. 5. Calculated by numerical simulation method, The development height of "two zones" is 94.5 m) and the thickness of coal seam with 4 times the height of waterproof coal pillar is 140.5m. 6. The uppermost end of "two zones" developed by mining 12# coal seam is located in the relative water-isolating layer of Cretaceous system, and there is also the water-isolating layer of Quaternary system. So it won't cause surface water to leak into the mine.
【學(xué)位授予單位】：中國地質(zhì)大學(xué)(北京)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2015
【分類號】：TD82;TD79

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