巻号一覧
4 巻 (1982)
- 3 号 p. 127-
- 2 号 p. 67-
- 1 号 p. 1-
4 巻, 2 号
選択された号の論文の4件中1～4を表示しています
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平川 誠一, 有坂 一克1982 年 4 巻 2 号 p. 67-80
発行日: 1982/09/01
公開日: 2010/02/05
ジャーナル フリー地熱開発は初期段階における投資が膨大で企業ベースに至るまでのリードタイムが長い点,石油・天然ガスの開発と類似点がある。著者らは石油・天然ガス開発分野での経済性評価方法を参考にして,地熱フィールド開発の経済性に関する数値モデルを作成し,モンテ・カルロ法を用いての計算研究方法を,ここに示した。地熱開発の経済性についてはアメリカでも可なりの研究がおこなわれているが,膨大なデータ量の蓄積整備の環境下でのものが主であり,その研究方法を充分なるデータ量がない場合に適用することは無理が生じると思われる。そこで,本研究は,フィールド・データ量が少ない場合を想定して,既開発地熱フィールドの隣接地域に同規模の新規フィールドを開発するときの経済性指針をうることにある。抄録全体を表示PDF形式でダウンロード (744K) -
林 正雄1982 年 4 巻 2 号 p. 81-90
発行日: 1982/09/01
公開日: 2009/08/07
ジャーナル フリーIt is well-known that the saturated water for an unit volume has a maximum enthalpy at 330°C. This fact by itself indicates that the highest-grade geothermal reservoir will be of 330°C because the “ore grade” of a reservoir is consideres to be proportional to the heat content stored in definite dimensions. On the other hand, the maximum reservoir temperatures of very active sysems in the world increase with increasing the depth of the reservoir nearly along the boiling curve of water in which the density of high temperature waters is taken into consideration (Hayashi et al., 1981). Consequently, the depth of the highest-grade geothermal reservoir can be predicted before deep drilling as follows: 1750 m for a field with an activity index of 100, 2700 m for one of 90, and below 3500 m for one of 80 . Since the enthalpy of the saturated water for a unit volume varies a little over a temperature range of 300 to 350°C, reservoirs almost equivalent to the highest-grade ones will be expected at depths ranging from 1100 to 2350 m for a field registering 100 in the activity index, below 1600 m for one of 90, and below 2550 m for one of 80.抄録全体を表示PDF形式でダウンロード (658K) -
横山 秀吉, 阿部 司, 中塚 勝人, 加藤 彰一1982 年 4 巻 2 号 p. 91-106
発行日: 1982/09/01
公開日: 2009/08/07
ジャーナル フリーIn this paper we describe the results of self potential survey conducted over Onikobe geothermal area in Narugo-cho, Miyagi prefecture, and discuss the relationship of the measured self potential anomaly to the calculated potential profile and the geologic structure. We introduce two types of models to interpret the measured self potential variation. In this analysis, it is assumed that the sources of self-potential generation are roughly coincident in location and depth with known faults. The potential fields generated by the models are compared with the actual profiles . A new model consisting of dipolar current distribution (Corwin et al., 1981) is generally valid for the interpretation of the field data obtained by both B and D3 survey lines. The agreement appears to be reasonably well. This implies that the self potential anomalies seen in Onikobe geothermal area may be related to the faults.抄録全体を表示PDF形式でダウンロード (4238K) -
湯原 浩三, 関岡 満, 伊藤 芳朗, 斎藤 輝夫1982 年 4 巻 2 号 p. 107-121
発行日: 1982/09/01
公開日: 2010/02/05
ジャーナル フリーA measurement was operated on 26 November 1978 for the wall temperature of the Jobu railway tunnel which is known as a hot tunnel penetrating the Kurobe Sennindani hot dry rock in the central Japan, by means of infrared radiation thermometers. Correction of the measured temperature is carried out for emissivity of the tunnel wall of rough granite surface, by solving the linear simultaneous equations. Signifi cant correction (6.2°C of its maximum) is due to large variation and irregular distribution of the temperature on the wall surface. Comparison of the corrected temperature with the thermistor thermometer-measuring temperature in the winter of 1975-76 is discussed. It was shown that the infrared radiation thermometer got an advantage over the thermistor thermometer in such severe condition of 41.5°C of the maximum air temperature and 88 to 97 % of relative humidity in the tunnel, because of its faster measurement of 6 hours than that of the latter of 19 days.抄録全体を表示PDF形式でダウンロード (4977K)
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