【正文】
故橡膠壩壩址處二十年一遇洪峰流量為420m3/s,五十年一遇洪峰流量為570m3/s。 本工程主要分為以下幾個(gè)部分:橡膠壩工程;邊墻工程;控制室工程;河道疏浚工程。(一)橡膠壩工程根據(jù)莊浪縣2007年建設(shè)計(jì)劃,本次暫做1~3橡膠壩設(shè)計(jì),以后逐步實(shí)施。根據(jù)北洛河城區(qū)段總體規(guī)劃要求,盡量增加水深和蓄水量,1橡膠壩控制水面洄水至自來水公司截水廊道,2橡膠壩控制水面洄水至1橡膠壩,3橡膠壩控制水面洄水至2橡膠壩。經(jīng)綜合考慮,確定1~3橡膠壩均為單跨,1,,凈長(zhǎng)91 m;2,,凈長(zhǎng)94 m;3,,凈長(zhǎng)95 m。1~3橡膠壩基礎(chǔ)均置于新鮮巖石上,采用C20鋼筋砼現(xiàn)澆,底板以下為C15混凝土基礎(chǔ),壩底板順?biāo)鞣较蜷L(zhǎng)度分別為10m、9m、10m,、采用651型止水帶止水,伸縮縫采用2cm厚閉孔泡沫板。該橡膠壩壩袋采用雙錨固形式錨固,錨固槽為暗槽設(shè)置,壩袋上下游錨固線采用外錨固,端部堵頭錨固線采用內(nèi)錨固。(二)邊墻工程左、右岸邊墻結(jié)構(gòu)型式完全相同,、基礎(chǔ)座于基巖上,1,;2,;3,;邊墻結(jié)構(gòu)為重力式擋土墻結(jié)構(gòu),采用C20鋼筋混凝土現(xiàn)澆。(三)河道疏浚工程根據(jù)實(shí)測(cè)河道中心線縱斷面圖及橡膠壩設(shè)計(jì)指標(biāo),本次河道疏浚長(zhǎng)度為785m,其中:1橡膠壩以上疏浚長(zhǎng)度為300m,河道設(shè)計(jì)比降為1/72;1~2橡膠壩之間疏浚長(zhǎng)度為282m,河道設(shè)計(jì)比降為1/86;2~3橡膠壩之間疏浚長(zhǎng)度為203m,河道設(shè)計(jì)比降為1/94。(四)控制室工程控制室是操縱橡膠壩充脹和排空坍落的機(jī)電設(shè)備及附屬設(shè)施的維護(hù)結(jié)構(gòu)。為了節(jié)約投資和方便交通,控制室布置在3橡膠壩的右岸壩端,矩形結(jié)構(gòu),共三層,。一層位于臺(tái)地下,為設(shè)備層,主要放置充排壩袋的水泵、電機(jī)及測(cè)壓設(shè)備等,;二層為配電層,主要放置配電柜等設(shè)備;三層管理層,為操縱及看護(hù)橡膠壩人員的住所。樓板為整體現(xiàn)澆式板梁結(jié)構(gòu),各層之間采用內(nèi)置懸臂式鋼筋混凝土樓梯連接。供水水源為自來水,采用兩臺(tái)ISG80125(I)型單級(jí)單吸管道離心泵,一臺(tái)備用,用Φ150mm直縫卷制電焊鋼管為供水管,經(jīng)埋于壩底板下方的供(排)水管路,向壩體供水。控制室內(nèi)布置3臺(tái)300S12A型單級(jí)雙吸中開式離心泵,經(jīng)埋于壩底板下方的供排水管路,排放壩內(nèi)水體。控制室10KV電源引自,距離約150米,單回路供電,架空10KV線路選用LGJ350電纜,室外柱上變壓器選擇S9100/10一臺(tái),其容量為100KVA,水泥電桿長(zhǎng)12米,檔距為50米。配電屏安裝有GGD125(改)總控制屏(兼進(jìn)線柜), 寬度均為800mm,所有電氣設(shè)備均在屏上操作。 施工組織該工程位于主河槽上,受氣候條件限制較大,需在短期內(nèi)突擊完成,原則上以機(jī)械化施工為主,人工施工為輔;專業(yè)隊(duì)伍施工為主,民工施工為輔,爭(zhēng)取在2007年6月底以前竣工并投入運(yùn)用。工程在項(xiàng)目管理上嚴(yán)格按照基本建設(shè)程序,在本工程施工過程中,必須認(rèn)真細(xì)致地嚴(yán)把質(zhì)量關(guān),建立項(xiàng)目管理責(zé)任制和質(zhì)量管理保證體系,確保工程質(zhì)量,力爭(zhēng)工程按期順利完工。 工程管理該工程屬于Ⅳ等工程,根據(jù)中華人民共和國水利部《水利工程管理單位編制定員試行標(biāo)準(zhǔn)》(SLJ705—81),設(shè)管理人員6人,分設(shè)所長(zhǎng)(股級(jí)),工程管理及水情調(diào)度,財(cái)務(wù)供應(yīng)、行政辦公及建筑物維修養(yǎng)護(hù)、護(hù)壩、水工觀測(cè)、水庫調(diào)度運(yùn)行等人員。工程管理機(jī)構(gòu)為“莊浪縣北洛河城區(qū)段橡膠壩工程管理所”, 該管理所由莊浪縣政府領(lǐng)導(dǎo),業(yè)務(wù)隸屬于縣水務(wù)局,管理所負(fù)責(zé)工程安全調(diào)度、工程維修、水工觀測(cè)及資料整編等工作。管理方法上實(shí)行定崗、定員、定責(zé),該工程投資較大,必須保證工程自身及運(yùn)行安全,需按照國家有關(guān)技術(shù)規(guī)范及操作規(guī)程的要求,制定工程管理細(xì)則,并進(jìn)行專業(yè)技術(shù)和職業(yè)道德培訓(xùn)。在莊浪縣城區(qū)段修建橡膠壩,進(jìn)行梯級(jí)開發(fā),水量豐富,河道泥沙淤積量小,水質(zhì)良好,環(huán)境優(yōu)美。工程建成后常年擋水,形成人工湖,兼有凈化空氣的作用,同時(shí)與紫荊公園風(fēng)景區(qū)交相輝映,共同構(gòu)筑一個(gè)小型景區(qū),為當(dāng)?shù)匕l(fā)展旅游事奠定了良好的基礎(chǔ)。工程施工過程中,對(duì)施工現(xiàn)場(chǎng)的生態(tài)環(huán)境會(huì)有暫時(shí)的一定程度的破壞;施工后及時(shí)對(duì)環(huán)境進(jìn)行保護(hù)和恢復(fù),可以將其不利影響消除或降低到最低限度??傊?,工程建成后,具有較好的生態(tài)效益和社會(huì)效益,宜盡快實(shí)施。 工程量及投資,,。,。工程主要材料量:水泥3416T,鋼材144T, m3。2 基本資料 流域概況水洛河屬渭河二級(jí)支流,上游分為南洛河和北洛河兩條支流,兩支流于莊浪縣城處匯合,匯合后稱下洛河。南洛河發(fā)源于關(guān)山西麓莊浪縣韓店鄉(xiāng)的灶火溝,由東向西,流經(jīng)韓店鄉(xiāng)、南坪鄉(xiāng)和水洛鎮(zhèn),,年均徑流量 ,;北洛河發(fā)源于寧夏回族自治區(qū)隆德縣蘇臺(tái)鄉(xiāng)馬鹿溝和黃草溝,由東北流向西南,于莊浪縣通邊鄉(xiāng)佛崖灣峽流入莊浪縣境,流經(jīng)通邊鄉(xiāng)、通化鄉(xiāng)、良邑鄉(xiāng)和水洛鎮(zhèn),河長(zhǎng)31Km,流域面積278km2,;下洛河由東北向西南,流經(jīng)朱店鎮(zhèn)、萬泉鄉(xiāng)至徐家城納入清水河,經(jīng)靜寧縣周家峽口、出清水峽,至仁大川高溝村注入葫蘆河。水洛河 (),(),,年均輸沙量395萬t。本次可研設(shè)計(jì)橡膠壩壩址位于北洛河末端,壩址以上控制流域面積278Km,年均徑流量2974萬m3。 氣象莊浪縣位于內(nèi)陸腹地,屬大陸性季風(fēng)氣候區(qū),全年盛行西北風(fēng),歷年最大風(fēng)速為20m/s。氣候干燥,晝夜溫差大,夏季氣溫高,多冰雹、雨洪,夏秋季雨水集中?!?,最熱月為7月,℃,℃;最冷月為1月,平均氣溫-℃,極端最低氣溫-23℃,最大凍土深63cm,多年平均無霜期142天。,年內(nèi)分布極不平衡,冬春降水稀少,10月至翌年4月降水僅占全年降水的20%,全年降水量60%以上集中在7-9三個(gè)月。(口徑20cm)。有關(guān)氣象統(tǒng)計(jì)資料見表2-1。 年徑流水洛河流域年徑流多由降雨補(bǔ)給,大多以暴雨形式出現(xiàn),年內(nèi)分配極不均勻,多集中在7-9月。全年可分為3-5月為春汛期,由上游冰雪融水和降雨補(bǔ)給,6-9月為夏秋洪水期,以降雨補(bǔ)給為主,10-11月為秋季枯水期,以地下水補(bǔ)給及河槽儲(chǔ)蓄量為主,12月至次年3月為冬季枯水期,以地下水補(bǔ)給為主。由于北洛河無實(shí)測(cè)水文資料,故利用《甘肅省水文圖集》進(jìn)行年徑流計(jì)算。按圖勾繪出流域分水線,并定出流域中心位置,用直線內(nèi)插法求得北洛河流域多年平均徑流深為107mm。多年平均徑流量:用公式Q=(1000FY)/T計(jì)算出平均流量,再由公式W=QT計(jì)算多年平均徑流量。式中:Q——多年平均流量(m3/s) F——流域面積,為278Km2 Y——多年平均徑流深,為107mm T——計(jì)算時(shí)段長(zhǎng),106s,并求得多年平均徑流量分別為2974萬m3。to the branch on a regular basis to inspect and guide the party building work system, and meets at least quarterly and team meetings or conferences. To enhance learning, enhance the bat capability of the party organization at all levels. Is a bination of a Central Committee on educational practice of the mass line of the party spirit, open up thinking, and innovative ways to make full use of the County, Township ... Levels members cadres amounted to more than 360 more passengers participate in learning has party of 18 big, and 18 session four in the plenary spirit,。 II is active organization carried out cadres podium, and moral school, activities 4 period, encourages leaders on Forum, since intends subject, will himself by thought, and by wants to, and by Wu full actual work, and general members cadres mon share experience。 three is using rural modern remote education site carried out party of policy and rural practical technology training. Four is the full use of the rural cadres college classes and instructor training courses, training of young and middleaged cadres of new rural construction, organize cadres to attend the training. Strengthening the construction of grassroots party organizations, and enhance the level of service to the people. One is to focus on two mittees teambuilding. Sticking to four on the two open, three lessons at work, to raise the village two mittees bat effectiveness and the cohesion of the team and strive to create a thinking, something, DirectorGeneral of the cadres. Second, strict implementation of the rural resident system of leading cadres. Asked Xiang resident leaders village at least 2 times a week, the scene to solve the problem, effective solution to reaching people at the service of last mile problem. Three is in what Commission village established village level convenience service model site, equipped with has corresponding of personnel and equipment, to created convenience service type party for target, full play good convenience Limin of role, and put convenience service station of operation and members station, and two representative a members work gang organic bined up, science set service matters, full service content, for masses provides policy advisory, and Affairs agent, and disputes mediation, and trap, service, total processing various event more than 100 more than cases, achieved service masses zero distance. Four model branch created in rural areas. Create a model branch of appraisal rules strictly in accordance with the requirements, mainly from industrial, villagelevel organization activity management, village village appearance, infrastructure, hardware and the party in a bid, paying careful attention to the village, Nanping village to create a work. Five is to strengthen the party system of making village affairs public, open the agro4 class 10, up to now, have public information more than more than 200 times. Five is to do service work, perfecting the incentive and caring support mechanisms within the party, 2015 has invested 20,000 yuan, condolences 54 difficult party member and senior party member. Stre