地址勘測(cè)資料翻譯-中英對(duì)照
2004年，核二院在探槽T42、T43之間布置了探槽TC（見圖3-8），發(fā)現(xiàn)了寬7m左右的特殊地質(zhì)體；2006年，為了追索4＃核島場(chǎng)地特殊地質(zhì)體向南東方向的延伸，又開挖了兩條探槽TC1和TC2（見圖3-8），這兩條探槽中均發(fā)現(xiàn)了特殊地質(zhì)體。
2008年，核工業(yè)工程勘察院又在3＃、4＃核島之間開挖了3條探槽（見圖3-1、圖3-8），以查明3＃、4＃核島場(chǎng)地內(nèi)特殊地質(zhì)體的關(guān)系。這3條探槽中均發(fā)現(xiàn)了特殊地質(zhì)體。
綜合分析擴(kuò)建工程特殊地質(zhì)體專題勘察、特殊地質(zhì)體評(píng)價(jià)研究資料、特殊地質(zhì)體空間分布和動(dòng)力特征勘察成果，特殊地質(zhì)體從4＃核島北部通過（見圖3-8），斜穿應(yīng)急柴油發(fā)電機(jī)廠房（UBS）廠房地基東北角，尖滅于UBS廠房外東北側(cè)，總體走向NW305～325°，地表揭露長(zhǎng)度約80m，最寬處約9m。
3.1.3在人工邊坡上的分布
在擴(kuò)建工程地質(zhì)測(cè)繪和特殊地質(zhì)評(píng)價(jià)研究評(píng)價(jià)工作的野外地質(zhì)調(diào)查時(shí)，發(fā)現(xiàn)當(dāng)時(shí)的人工邊坡多處揭露有特殊地質(zhì)體（圖3-9），總體走向NW315°～335°，在不同的高度上寬度不一，揭露的最大寬度達(dá)16m，105m平臺(tái)陡坎邊緣揭露的寬度只有50cm（照片3－2，取4＃測(cè)年樣）。
2007年上半年開始，江蘇核電有限公司對(duì)人工邊坡按最新設(shè)計(jì)重新開挖，與之前的邊坡相比，形態(tài)上有了非常大的改變。由于人工邊坡的重新開挖，特殊地質(zhì)體露出了比較清楚的邊界（照片3－3、3－4），出露長(zhǎng)度約200m，最大寬度約30m展布方向約310°（圖3－10），向南東尖滅于64m平臺(tái)上。
圖3-9 原人工邊坡特殊地質(zhì)體分布圖
圖3-10 現(xiàn)人工邊坡特殊地質(zhì)體分布圖
3.1.4總體展布特征
從3＃核島、4＃核島及人工邊坡特殊地質(zhì)體的平面位置來看（圖3-11、3-12），特殊地質(zhì)體不是連續(xù)分布的，也不在一條延長(zhǎng)線上，而是在平面上呈左旋羽列式排列。單個(gè)特殊地質(zhì)體的走向?yàn)镹W-SE方向，與田灣大型節(jié)理帶夾角10°～30°。
根據(jù)現(xiàn)場(chǎng)調(diào)查，在田灣大型節(jié)理帶的東北面，基巖裸露，陡崖發(fā)育，特殊地質(zhì)體的北西延伸方向上，巖體完整，沒有發(fā)現(xiàn)破碎帶；通過航片解譯發(fā)現(xiàn)，田灣大型節(jié)理帶東北面沒有與特殊地質(zhì)體發(fā)現(xiàn)相同的線性構(gòu)造，只發(fā)育與田灣大型節(jié)理帶平行的節(jié)理。由于田灣大型節(jié)理帶的存在，限制了特殊地質(zhì)體向北西方向的延伸。從3、4號(hào)核島之間開挖的探槽來看，特殊地質(zhì)體向北西延伸中止于田灣大型節(jié)理帶之前，未與之相交（見圖3-11）。
3.2特殊地質(zhì)體的豎向分布
3＃核島場(chǎng)地的探槽、減震溝和基坑坑壁均可見到特殊地質(zhì)體與圍巖的接觸界面為陡傾角，均大于80°，近于直立，傾向NE或SW。在3＃核島特殊地質(zhì)體向南東方向延伸經(jīng)過的2＃循環(huán)冷卻水隧道（UPN）、2＃核服務(wù)廠房（21UKC）基坑、2＃常規(guī)島基坑，亦可見特殊地質(zhì)體向北東和南西兩個(gè)方向傾，總體傾向北東，陡傾角。
在4＃核島場(chǎng)地2004和2006年所布置的10條探槽中，有6條發(fā)現(xiàn)了特殊地質(zhì)體，所揭露的特殊地質(zhì)體產(chǎn)狀均呈陡傾角，傾向北東和南西，多數(shù)傾向南西。
擴(kuò)建工程詳勘214－1鉆孔位于特殊地質(zhì)體的西南側(cè)，距特殊地質(zhì)體邊界約3.5m，孔深56.00m，該孔未發(fā)現(xiàn)特殊地質(zhì)體，表明特殊地質(zhì)體即使向南西傾斜，傾角也不會(huì)小于86°。
擴(kuò)建工程特殊地質(zhì)體專題勘察220－2鉆孔位于特殊地質(zhì)體中部，距特殊地質(zhì)體兩側(cè)邊界5～5.7m。該孔孔深55.6m，沒有穿透特殊地質(zhì)體，表明特殊地質(zhì)體即使向某一側(cè)傾斜，傾角也不會(huì)小于84°。
圖3-11 核島場(chǎng)地標(biāo)高7.60m特殊地質(zhì)體分布圖
圖3-12 特殊地質(zhì)體平面展布圖
特殊地質(zhì)體空間分布和動(dòng)力特征勘察共完成了5個(gè)斜孔，其中有2個(gè)斜孔XK3、XK4發(fā)現(xiàn)了特殊地質(zhì)體，這兩個(gè)鉆孔所發(fā)現(xiàn)的特殊地質(zhì)體的水平投影均沒有超出特殊地質(zhì)體的地面邊界（見圖1-1）。
綜上所述，特殊地質(zhì)體的產(chǎn)狀近于直立。特殊地質(zhì)體向南西和北東兩個(gè)相反的方向傾斜本身就是產(chǎn)狀近于直立的一種體現(xiàn)。
In 2004, No.2 Nuclear Institute deployed trench TC between T42 and T43 (See Fig.3-8), and found a special geologic body of about 7.0m in width; 1. In order to trace the extension of the special geologic body to the southeast on No.4 NI, two more trenches - TC1 and TC2, were dug in 2006 (See Fig.3-8). Special geologic body was found in both trenches.
1. In 2008, the Geotechnical Investigation and Surveying Institute of Nuclear Industry excavated three more trenches between No.3 NI and No.4 NI (see Figs. 3-1 and 3-8), in order to find out the relationship of special geologic bodies within No.3 NI and No. 4 NI. Special geologic bodies were found in all the three trenches.
1. Through comprehensive analysis of the subject reconnaissance of special geologic bodies of the Extension Project, the evaluation and research data of the special geologic bodies and the survey achievements of spatial distribution and dynamic features of the special geologic bodies, it is found that the special geologic body passes through the northern part of No. 4 NI (See Fig.3-8), crossing slantly the northeast corner of the foundation of emergency diesel generator building (UBS), and pinching out at the northeast side of UBS building; its general direction is NW, at 305-325°; the length of exposed surface is about 80m, with maximum width of 9m.
3.1.3 Distribution on Artificial Slope
1. In geologic mapping of extension project and field geologic investigation for evaluation and research of special geologic body, it was found that special geologic body was exposed in a number of places on artificial slope (Fig.3-9); the general direction was NW315°-335°,and the width varied at different elevations. The maximum width exposed was 16m; the width exposed at the edge of steep ridge of the 105m platform was only 50m (Pic. 3-2; No.4 NI was sampled for age dating).
1. From the first half of 2007, the Jiangsu Nuclear Power Corp. began to re-excavate the artificial slope according to the latest design; the slope changed a great deal in shape compared with what it was before.1. Due to re-excavation of artificial slope, the special geologic body showed more distinct boundaries (Pics. 3-3, 3-4), about 200m in exposed length, about 30m of maximum width, spreading direction at about 310°(Fig.3-10), and pinched out to SE on the platform of 64m.
Figure 3-9 The distribution of special geological body at artificial slope in the past
Figure 3-10 the distribution of special geological body at artificial slope now
3.1.4 General Distribution Characteristics
1. From the plan position of special geologic body in artificial slope on No.3 NI and No.4 NI (Figs.3-11, 3-12), we can see that the special geologic body is not in continuous distribution and not in the same extension line, but in levorotatory feather arrangement on the plan. The trend of individual special geologic body was in NW-SE, with an included angle of 10°-30°with large joint of Tianwan.
According to the field survey, in the northeast of the large joint in Tianwan, the bed rock is exposed, and the klint is developed. On the northwest of the special geological body’s extension direction, the rock mass is integrated and there is no fractural zone. From the air photo we could see, there is no same structure in the northeast of the large joint in Tianwan as the special geological body, only section parallels with the special geological body exist. As there are large joint here, the special geological body is restricted to northwest. We conjecture from the trial trenches between 3# and 4# nuclear island, which the special geological body doesn’t intersect with the Tianwan large joint before its ending to the northwest extension.
3.2 Vertical Distribution of Special Geologic Bodies
The contact surface between the surrounding rock and the special geological body is visible in the trial trenches in 3# nuclear island area, damping ditch and the wall of the foundation pit; and the contact surface is steep dip angle, it is more than 80°and nearly vertical, the direction is to NE or SW. In 3# nuclear island, the special geological body extend to southeast to go through.2# circulating cooling water tunnel (UPN), the foundation pit of 2 nuclear service plant (21UKC), foundation pit of 2# conventional island; it also could be seen that the special geological body incline to northeast and southwest, but the general direction is to the northeast, the dip angle is very steep.
In the 10 trial trenches at 4# nuclear area deployed in 2004 and 2006, 6 of them are found with special geological body. The special geological body disclosed is presented to be steep dip angle, and the direction is to northeast and southwest, most is to southwest.
The 214-1 drill hole in the exploration of the extension project is located at southwest side of the special geological body, it is about 3.5m from the boundary of the special geological body, and the depth of the hole is 56m. No special geological body is found in this hole, this indicates that even the special geological body dips to southwest, the dip angle is no less than 86°.
The 220-2 drill hole is the special reconnaissance of the extension project, it is located at the middle of the special geological body, and its distance to the boundary of the special geological body is 5 to 5.7m. The hole is 55.6m in depth, but it does not penetrate the special geological body, this indicates that even the special geological body dips to some side, the dip angle is no less than 84°.
Figure 3-11 the distribution of the special geological body at the elevation of 7.6m in nuclear island area
Figure 3-12 the plane distribution of the special geological body
Spatial distribution of the special geological body and dynamics characteristics exploration of total five incline holes are completed, including two inclined holes of XK3 and XK4, which find special geological bodies. The horizontal projections of the special geological bodies found in these two holes are not beyond the boundary of the special geological ground (see figure 1-1).
Taken together, the occurrence of special geological body is nearly vertical. The inclination of special geological bodies to two opposite direction southwest and northeast is itself a reflection of nearly vertical.
2013.2.21